Ignore:
Timestamp:
17/05/07 11:38:17 (14 years ago)
Author:
lawrence
Message:

Modifications to support cut-down stub-b xquery.
Slight rearrangement of page positioning in discovery. (Needs CSS
support)

Location:
TI07-MOLES/trunk/PythonCode/wsgi/examples
Files:
1 added
1 edited

Legend:

Unmodified
Added
Removed
  • TI07-MOLES/trunk/PythonCode/wsgi/examples/badc.nerc.ac.uk__NDG-B1__dataent_chablis.xml

    r2433 r2487  
    1 <?xml version="1.0" encoding="utf-8"?><dgMetadataRecord> 
     1<dgMetadataRecord> 
    22    <dgMetadataID> 
    33        <schemeIdentifier>NDG-B1</schemeIdentifier> 
     
    2525                    <URI>http://badc.nerc.ac.uk/data/chablis</URI> 
    2626                </dgSimpleLink> 
     27                <dgReferenceClass> 
     28                    <dgValidTerm>DataPage</dgValidTerm> 
     29                    <dgValidTermID> 
     30                        <ParentListID>http://vocab.ndg.nerc.ac.uk/null</ParentListID> 
     31                        <TermID>null</TermID> 
     32                    </dgValidTermID> 
     33                </dgReferenceClass> 
    2734            </descriptionOnlineReference> 
    2835        </descriptionSection> 
     
    5461                <schemeIdentifier>URI</schemeIdentifier> 
    5562                <repositoryIdentifier>badc.nerc.ac.uk</repositoryIdentifier> 
    56                 <localIdentifier>chablis</localIdentifier> 
     63                <localIdentifier>granule_chablis</localIdentifier> 
    5764            </dataModelID> 
    5865        </dgDataGranule> 
     
    6572                        <LowValue/> 
    6673                        <dgStandardUnit> 
    67                             <dgValidTerm>unknown</dgValidTerm> 
     74                            <dgValidTerm>null</dgValidTerm> 
    6875                            <dgValidTermID> 
    6976                                <ParentListID>general_units</ParentListID> 
     
    8289                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    8390                        <dgValidTermID> 
    84                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    85                             <TermID>unknown</TermID> 
     91                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
     92                            <TermID>null</TermID> 
    8693                        </dgValidTermID> 
    8794                        <dgValidSubterm> 
     
    8996                            <dgValidTermID> 
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     98                                <TermID>null</TermID> 
    9299                            </dgValidTermID> 
    93100                            <dgValidSubterm> 
     
    95102                                <dgValidTermID> 
    96103                                    <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P141</ParentListID> 
    97                                     <TermID>unknown</TermID> 
     104                                    <TermID>null</TermID> 
    98105                                </dgValidTermID> 
    99106                                <dgValidSubterm> 
    100107                                    <dgValidTerm>OxygenCompounds</dgValidTerm> 
    101108                                    <dgValidTermID> 
    102                                         <ParentListID>http://vocab.ndg.nerc.ac.uk/term/Pxxx</ParentListID> 
    103                                         <TermID>unknown</TermID> 
     109                                        <ParentListID>null</ParentListID> 
     110                                        <TermID>null</TermID> 
    104111                                    </dgValidTermID> 
     112                                    <ListLevel>4</ListLevel> 
    105113                                </dgValidSubterm> 
     114                                <ListLevel>3</ListLevel> 
    106115                            </dgValidSubterm> 
     116                            <ListLevel>2</ListLevel> 
    107117                        </dgValidSubterm> 
     118                        <ListLevel>1</ListLevel> 
    108119                    </dgValidSubterm> 
     120                    <ListLevel>0</ListLevel> 
    109121                </dgStdParameterMeasured> 
    110122                <ParameterName>EARTHSCIENCE/Atmosphere/AtmosphericChemistry/OxygenCompounds/Ozone</ParameterName> 
     
    118130                        <LowValue/> 
    119131                        <dgStandardUnit> 
    120                             <dgValidTerm>unknown</dgValidTerm> 
     132                            <dgValidTerm>null</dgValidTerm> 
    121133                            <dgValidTermID> 
    122134                                <ParentListID>general_units</ParentListID> 
     
    135147                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    136148                        <dgValidTermID> 
    137                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    138                             <TermID>unknown</TermID> 
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    139151                        </dgValidTermID> 
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    142154                            <dgValidTermID> 
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    146158                            <dgValidSubterm> 
     
    148160                                <dgValidTermID> 
    149161                                    <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P141</ParentListID> 
    150                                     <TermID>unknown</TermID> 
     162                                    <TermID>null</TermID> 
    151163                                </dgValidTermID> 
    152164                                <dgValidSubterm> 
    153165                                    <dgValidTerm>CarbonandHydrocarbonCompounds</dgValidTerm> 
    154166                                    <dgValidTermID> 
    155                                         <ParentListID>http://vocab.ndg.nerc.ac.uk/term/Pxxx</ParentListID> 
    156                                         <TermID>unknown</TermID> 
     167                                        <ParentListID>null</ParentListID> 
     168                                        <TermID>null</TermID> 
    157169                                    </dgValidTermID> 
     170                                    <ListLevel>4</ListLevel> 
    158171                                </dgValidSubterm> 
     172                                <ListLevel>3</ListLevel> 
    159173                            </dgValidSubterm> 
     174                            <ListLevel>2</ListLevel> 
    160175                        </dgValidSubterm> 
     176                        <ListLevel>1</ListLevel> 
    161177                    </dgValidSubterm> 
     178                    <ListLevel>0</ListLevel> 
    162179                </dgStdParameterMeasured> 
    163180                <ParameterName>EARTHSCIENCE/Atmosphere/AtmosphericChemistry/CarbonandHydrocarbonCompounds/CarbonMonoxide</ParameterName> 
     
    171188                        <LowValue/> 
    172189                        <dgStandardUnit> 
    173                             <dgValidTerm>unknown</dgValidTerm> 
     190                            <dgValidTerm>null</dgValidTerm> 
    174191                            <dgValidTermID> 
    175192                                <ParentListID>general_units</ParentListID> 
     
    188205                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    189206                        <dgValidTermID> 
    190                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    191                             <TermID>unknown</TermID> 
     207                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
     208                            <TermID>null</TermID> 
    192209                        </dgValidTermID> 
    193210                        <dgValidSubterm> 
     
    195212                            <dgValidTermID> 
    196213                                <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P131</ParentListID> 
    197                                 <TermID>unknown</TermID> 
     214                                <TermID>null</TermID> 
    198215                            </dgValidTermID> 
    199216                            <dgValidSubterm> 
     
    201218                                <dgValidTermID> 
    202219                                    <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P141</ParentListID> 
    203                                     <TermID>unknown</TermID> 
     220                                    <TermID>null</TermID> 
    204221                                </dgValidTermID> 
    205222                                <dgValidSubterm> 
    206223                                    <dgValidTerm>HalonsandHalogens</dgValidTerm> 
    207224                                    <dgValidTermID> 
    208                                         <ParentListID>http://vocab.ndg.nerc.ac.uk/term/Pxxx</ParentListID> 
    209                                         <TermID>unknown</TermID> 
     225                                        <ParentListID>null</ParentListID> 
     226                                        <TermID>null</TermID> 
    210227                                    </dgValidTermID> 
     228                                    <ListLevel>4</ListLevel> 
    211229                                </dgValidSubterm> 
     230                                <ListLevel>3</ListLevel> 
    212231                            </dgValidSubterm> 
     232                            <ListLevel>2</ListLevel> 
    213233                        </dgValidSubterm> 
     234                        <ListLevel>1</ListLevel> 
    214235                    </dgValidSubterm> 
     236                    <ListLevel>0</ListLevel> 
    215237                </dgStdParameterMeasured> 
    216238                <ParameterName>EARTHSCIENCE/Atmosphere/AtmosphericChemistry/HalonsandHalogens/Halocarbons</ParameterName> 
     
    224246                        <LowValue/> 
    225247                        <dgStandardUnit> 
    226                             <dgValidTerm>unknown</dgValidTerm> 
     248                            <dgValidTerm>null</dgValidTerm> 
    227249                            <dgValidTermID> 
    228250                                <ParentListID>general_units</ParentListID> 
     
    241263                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    242264                        <dgValidTermID> 
    243                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    244                             <TermID>unknown</TermID> 
     265                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
     266                            <TermID>null</TermID> 
    245267                        </dgValidTermID> 
    246268                        <dgValidSubterm> 
     
    248270                            <dgValidTermID> 
    249271                                <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P131</ParentListID> 
    250                                 <TermID>unknown</TermID> 
     272                                <TermID>null</TermID> 
    251273                            </dgValidTermID> 
    252274                            <dgValidSubterm> 
     
    254276                                <dgValidTermID> 
    255277                                    <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P141</ParentListID> 
    256                                     <TermID>unknown</TermID> 
     278                                    <TermID>null</TermID> 
    257279                                </dgValidTermID> 
    258280                                <dgValidSubterm> 
    259281                                    <dgValidTerm>Snow</dgValidTerm> 
    260282                                    <dgValidTermID> 
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    262                                         <TermID>unknown</TermID> 
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     284                                        <TermID>null</TermID> 
    263285                                    </dgValidTermID> 
     286                                    <ListLevel>4</ListLevel> 
    264287                                </dgValidSubterm> 
     288                                <ListLevel>3</ListLevel> 
    265289                            </dgValidSubterm> 
     290                            <ListLevel>2</ListLevel> 
    266291                        </dgValidSubterm> 
     292                        <ListLevel>1</ListLevel> 
    267293                    </dgValidSubterm> 
     294                    <ListLevel>0</ListLevel> 
    268295                </dgStdParameterMeasured> 
    269296                <ParameterName>EARTHSCIENCE/Atmosphere/Precipitation/Snow/snowdepth</ParameterName> 
     
    277304                        <LowValue/> 
    278305                        <dgStandardUnit> 
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     306                            <dgValidTerm>null</dgValidTerm> 
    280307                            <dgValidTermID> 
    281308                                <ParentListID>general_units</ParentListID> 
     
    294321                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    295322                        <dgValidTermID> 
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    297                             <TermID>unknown</TermID> 
     323                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
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    298325                        </dgValidTermID> 
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    301328                            <dgValidTermID> 
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    303                                 <TermID>unknown</TermID> 
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    304331                            </dgValidTermID> 
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    307334                                <dgValidTermID> 
    308335                                    <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P141</ParentListID> 
    309                                     <TermID>unknown</TermID> 
     336                                    <TermID>null</TermID> 
    310337                                </dgValidTermID> 
    311338                                <dgValidSubterm> 
    312339                                    <dgValidTerm>CloudAmount</dgValidTerm> 
    313340                                    <dgValidTermID> 
    314                                         <ParentListID>http://vocab.ndg.nerc.ac.uk/term/Pxxx</ParentListID> 
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    316343                                    </dgValidTermID> 
     344                                    <ListLevel>4</ListLevel> 
    317345                                </dgValidSubterm> 
     346                                <ListLevel>3</ListLevel> 
    318347                            </dgValidSubterm> 
     348                            <ListLevel>2</ListLevel> 
    319349                        </dgValidSubterm> 
     350                        <ListLevel>1</ListLevel> 
    320351                    </dgValidSubterm> 
     352                    <ListLevel>0</ListLevel> 
    321353                </dgStdParameterMeasured> 
    322354                <ParameterName>EARTHSCIENCE/Atmosphere/Clouds/CloudAmount/Frequency</ParameterName> 
     
    330362                        <LowValue/> 
    331363                        <dgStandardUnit> 
    332                             <dgValidTerm>unknown</dgValidTerm> 
     364                            <dgValidTerm>null</dgValidTerm> 
    333365                            <dgValidTermID> 
    334366                                <ParentListID>general_units</ParentListID> 
     
    347379                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    348380                        <dgValidTermID> 
    349                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    350                             <TermID>unknown</TermID> 
     381                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
     382                            <TermID>null</TermID> 
    351383                        </dgValidTermID> 
    352384                        <dgValidSubterm> 
     
    354386                            <dgValidTermID> 
    355387                                <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P131</ParentListID> 
    356                                 <TermID>unknown</TermID> 
     388                                <TermID>null</TermID> 
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    362                                     <TermID>unknown</TermID> 
     394                                    <TermID>null</TermID> 
    363395                                </dgValidTermID> 
    364396                                <dgValidSubterm> 
    365397                                    <dgValidTerm>Humidity</dgValidTerm> 
    366398                                    <dgValidTermID> 
    367                                         <ParentListID>http://vocab.ndg.nerc.ac.uk/term/Pxxx</ParentListID> 
    368                                         <TermID>unknown</TermID> 
     399                                        <ParentListID>null</ParentListID> 
     400                                        <TermID>null</TermID> 
    369401                                    </dgValidTermID> 
     402                                    <ListLevel>4</ListLevel> 
    370403                                </dgValidSubterm> 
     404                                <ListLevel>3</ListLevel> 
    371405                            </dgValidSubterm> 
     406                            <ListLevel>2</ListLevel> 
    372407                        </dgValidSubterm> 
     408                        <ListLevel>1</ListLevel> 
    373409                    </dgValidSubterm> 
     410                    <ListLevel>0</ListLevel> 
    374411                </dgStdParameterMeasured> 
    375412                <ParameterName>EARTHSCIENCE/Atmosphere/AtmosphericWaterVapor/Humidity/relativehumidity</ParameterName> 
     
    383420                        <LowValue/> 
    384421                        <dgStandardUnit> 
    385                             <dgValidTerm>unknown</dgValidTerm> 
     422                            <dgValidTerm>null</dgValidTerm> 
    386423                            <dgValidTermID> 
    387424                                <ParentListID>general_units</ParentListID> 
     
    400437                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    401438                        <dgValidTermID> 
    402                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    403                             <TermID>unknown</TermID> 
     439                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
     440                            <TermID>null</TermID> 
    404441                        </dgValidTermID> 
    405442                        <dgValidSubterm> 
     
    407444                            <dgValidTermID> 
    408445                                <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P131</ParentListID> 
    409                                 <TermID>unknown</TermID> 
     446                                <TermID>null</TermID> 
    410447                            </dgValidTermID> 
    411448                            <dgValidSubterm> 
     
    413450                                <dgValidTermID> 
    414451                                    <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P141</ParentListID> 
    415                                     <TermID>unknown</TermID> 
     452                                    <TermID>null</TermID> 
    416453                                </dgValidTermID> 
    417454                                <dgValidSubterm> 
    418455                                    <dgValidTerm>SurfaceWinds</dgValidTerm> 
    419456                                    <dgValidTermID> 
    420                                         <ParentListID>http://vocab.ndg.nerc.ac.uk/term/Pxxx</ParentListID> 
    421                                         <TermID>unknown</TermID> 
     457                                        <ParentListID>null</ParentListID> 
     458                                        <TermID>null</TermID> 
    422459                                    </dgValidTermID> 
     460                                    <ListLevel>4</ListLevel> 
    423461                                </dgValidSubterm> 
     462                                <ListLevel>3</ListLevel> 
    424463                            </dgValidSubterm> 
     464                            <ListLevel>2</ListLevel> 
    425465                        </dgValidSubterm> 
     466                        <ListLevel>1</ListLevel> 
    426467                    </dgValidSubterm> 
     468                    <ListLevel>0</ListLevel> 
    427469                </dgStdParameterMeasured> 
    428470                <ParameterName>EARTHSCIENCE/Atmosphere/AtmosphericWinds/SurfaceWinds/winddirection</ParameterName> 
     
    436478                        <LowValue/> 
    437479                        <dgStandardUnit> 
    438                             <dgValidTerm>unknown</dgValidTerm> 
     480                            <dgValidTerm>null</dgValidTerm> 
    439481                            <dgValidTermID> 
    440482                                <ParentListID>general_units</ParentListID> 
     
    453495                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    454496                        <dgValidTermID> 
    455                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    456                             <TermID>unknown</TermID> 
     497                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
     498                            <TermID>null</TermID> 
    457499                        </dgValidTermID> 
    458500                        <dgValidSubterm> 
     
    460502                            <dgValidTermID> 
    461503                                <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P131</ParentListID> 
    462                                 <TermID>unknown</TermID> 
     504                                <TermID>null</TermID> 
    463505                            </dgValidTermID> 
    464506                            <dgValidSubterm> 
     
    466508                                <dgValidTermID> 
    467509                                    <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P141</ParentListID> 
    468                                     <TermID>unknown</TermID> 
     510                                    <TermID>null</TermID> 
    469511                                </dgValidTermID> 
    470512                                <dgValidSubterm> 
    471513                                    <dgValidTerm>SurfaceWinds</dgValidTerm> 
    472514                                    <dgValidTermID> 
    473                                         <ParentListID>http://vocab.ndg.nerc.ac.uk/term/Pxxx</ParentListID> 
    474                                         <TermID>unknown</TermID> 
     515                                        <ParentListID>null</ParentListID> 
     516                                        <TermID>null</TermID> 
    475517                                    </dgValidTermID> 
     518                                    <ListLevel>4</ListLevel> 
    476519                                </dgValidSubterm> 
     520                                <ListLevel>3</ListLevel> 
    477521                            </dgValidSubterm> 
     522                            <ListLevel>2</ListLevel> 
    478523                        </dgValidSubterm> 
     524                        <ListLevel>1</ListLevel> 
    479525                    </dgValidSubterm> 
     526                    <ListLevel>0</ListLevel> 
    480527                </dgStdParameterMeasured> 
    481528                <ParameterName>EARTHSCIENCE/Atmosphere/AtmosphericWinds/SurfaceWinds/windspeed</ParameterName> 
     
    489536                        <LowValue/> 
    490537                        <dgStandardUnit> 
    491                             <dgValidTerm>unknown</dgValidTerm> 
     538                            <dgValidTerm>null</dgValidTerm> 
    492539                            <dgValidTermID> 
    493540                                <ParentListID>general_units</ParentListID> 
     
    506553                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    507554                        <dgValidTermID> 
    508                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    509                             <TermID>unknown</TermID> 
     555                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
     556                            <TermID>null</TermID> 
    510557                        </dgValidTermID> 
    511558                        <dgValidSubterm> 
     
    513560                            <dgValidTermID> 
    514561                                <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P131</ParentListID> 
    515                                 <TermID>unknown</TermID> 
     562                                <TermID>null</TermID> 
    516563                            </dgValidTermID> 
    517564                            <dgValidSubterm> 
     
    519566                                <dgValidTermID> 
    520567                                    <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P141</ParentListID> 
    521                                     <TermID>unknown</TermID> 
     568                                    <TermID>null</TermID> 
    522569                                </dgValidTermID> 
    523570                                <dgValidSubterm> 
    524571                                    <dgValidTerm>AirTemperature</dgValidTerm> 
    525572                                    <dgValidTermID> 
    526                                         <ParentListID>http://vocab.ndg.nerc.ac.uk/term/Pxxx</ParentListID> 
    527                                         <TermID>unknown</TermID> 
     573                                        <ParentListID>null</ParentListID> 
     574                                        <TermID>null</TermID> 
    528575                                    </dgValidTermID> 
     576                                    <ListLevel>4</ListLevel> 
    529577                                </dgValidSubterm> 
     578                                <ListLevel>3</ListLevel> 
    530579                            </dgValidSubterm> 
     580                            <ListLevel>2</ListLevel> 
    531581                        </dgValidSubterm> 
     582                        <ListLevel>1</ListLevel> 
    532583                    </dgValidSubterm> 
     584                    <ListLevel>0</ListLevel> 
    533585                </dgStdParameterMeasured> 
    534586                <ParameterName>EARTHSCIENCE/Atmosphere/AtmosphericTemperature/AirTemperature/temperature</ParameterName> 
     
    542594                        <LowValue/> 
    543595                        <dgStandardUnit> 
    544                             <dgValidTerm>unknown</dgValidTerm> 
     596                            <dgValidTerm>null</dgValidTerm> 
    545597                            <dgValidTermID> 
    546598                                <ParentListID>general_units</ParentListID> 
     
    559611                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    560612                        <dgValidTermID> 
    561                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    562                             <TermID>unknown</TermID> 
     613                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
     614                            <TermID>null</TermID> 
    563615                        </dgValidTermID> 
    564616                        <dgValidSubterm> 
     
    566618                            <dgValidTermID> 
    567619                                <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P131</ParentListID> 
    568                                 <TermID>unknown</TermID> 
     620                                <TermID>null</TermID> 
    569621                            </dgValidTermID> 
    570622                            <dgValidSubterm> 
     
    572624                                <dgValidTermID> 
    573625                                    <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P141</ParentListID> 
    574                                     <TermID>unknown</TermID> 
     626                                    <TermID>null</TermID> 
    575627                                </dgValidTermID> 
    576628                                <dgValidSubterm> 
    577629                                    <dgValidTerm>SeaLevelPressure</dgValidTerm> 
    578630                                    <dgValidTermID> 
    579                                         <ParentListID>http://vocab.ndg.nerc.ac.uk/term/Pxxx</ParentListID> 
    580                                         <TermID>unknown</TermID> 
     631                                        <ParentListID>null</ParentListID> 
     632                                        <TermID>null</TermID> 
    581633                                    </dgValidTermID> 
     634                                    <ListLevel>4</ListLevel> 
    582635                                </dgValidSubterm> 
     636                                <ListLevel>3</ListLevel> 
    583637                            </dgValidSubterm> 
     638                            <ListLevel>2</ListLevel> 
    584639                        </dgValidSubterm> 
     640                        <ListLevel>1</ListLevel> 
    585641                    </dgValidSubterm> 
     642                    <ListLevel>0</ListLevel> 
    586643                </dgStdParameterMeasured> 
    587644                <ParameterName>EARTHSCIENCE/Atmosphere/AtmosphericPressure/SeaLevelPressure/meansealevelpressure</ParameterName> 
     
    595652                        <LowValue/> 
    596653                        <dgStandardUnit> 
    597                             <dgValidTerm>unknown</dgValidTerm> 
     654                            <dgValidTerm>null</dgValidTerm> 
    598655                            <dgValidTermID> 
    599656                                <ParentListID>general_units</ParentListID> 
     
    612669                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    613670                        <dgValidTermID> 
    614                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    615                             <TermID>unknown</TermID> 
     671                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
     672                            <TermID>null</TermID> 
    616673                        </dgValidTermID> 
    617674                        <dgValidSubterm> 
     
    619676                            <dgValidTermID> 
    620677                                <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P131</ParentListID> 
    621                                 <TermID>unknown</TermID> 
     678                                <TermID>null</TermID> 
    622679                            </dgValidTermID> 
    623680                            <dgValidSubterm> 
     
    625682                                <dgValidTermID> 
    626683                                    <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P141</ParentListID> 
    627                                     <TermID>unknown</TermID> 
     684                                    <TermID>null</TermID> 
    628685                                </dgValidTermID> 
    629686                                <dgValidSubterm> 
    630687                                    <dgValidTerm>TraceGases</dgValidTerm> 
    631688                                    <dgValidTermID> 
    632                                         <ParentListID>http://vocab.ndg.nerc.ac.uk/term/Pxxx</ParentListID> 
    633                                         <TermID>unknown</TermID> 
     689                                        <ParentListID>null</ParentListID> 
     690                                        <TermID>null</TermID> 
    634691                                    </dgValidTermID> 
     692                                    <ListLevel>4</ListLevel> 
    635693                                </dgValidSubterm> 
     694                                <ListLevel>3</ListLevel> 
    636695                            </dgValidSubterm> 
     696                            <ListLevel>2</ListLevel> 
    637697                        </dgValidSubterm> 
     698                        <ListLevel>1</ListLevel> 
    638699                    </dgValidSubterm> 
     700                    <ListLevel>0</ListLevel> 
    639701                </dgStdParameterMeasured> 
    640702                <ParameterName>EARTHSCIENCE/Atmosphere/AtmosphericChemistry/TraceGases/TraceSpecies/peroxyacetylnitrate(PAN)</ParameterName> 
     
    648710                        <LowValue/> 
    649711                        <dgStandardUnit> 
    650                             <dgValidTerm>unknown</dgValidTerm> 
     712                            <dgValidTerm>null</dgValidTerm> 
    651713                            <dgValidTermID> 
    652714                                <ParentListID>general_units</ParentListID> 
     
    665727                        <dgValidTerm>EARTHSCIENCE</dgValidTerm> 
    666728                        <dgValidTermID> 
    667                             <ParentListID>http://vocab.ndg.nerc.ac.uk/term/</ParentListID> 
    668                             <TermID>unknown</TermID> 
     729                            <ParentListID>http://vocab.ndg.nerc.ac.uk/term/121</ParentListID> 
     730                            <TermID>null</TermID> 
    669731                        </dgValidTermID> 
    670732                        <dgValidSubterm> 
     
    672734                            <dgValidTermID> 
    673735                                <ParentListID>http://vocab.ndg.nerc.ac.uk/term/P131</ParentListID> 
    674                                 <TermID>unknown</TermID> 
     736                                <TermID>null</TermID> 
    675737                            </dgValidTermID> 
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     1023                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    951                     <abstract> 
    952                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    953                     </abstract> 
    954                     <descriptionSection> 
    955                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    956 &lt;P&gt; 
    957 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    958 &lt;P&gt; 
    959 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    960 &lt;P&gt; 
    961 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    962 &lt;P&gt; 
    963 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    9751043                <name>Halley Bay, Antarctica</name> 
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     1062                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    1059                     <abstract> 
    1060                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    1061                     </abstract> 
    1062                     <descriptionSection> 
    1063                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    1064 &lt;P&gt; 
    1065 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    1066 &lt;P&gt; 
    1067 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    1068 &lt;P&gt; 
    1069 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    1070 &lt;P&gt; 
    1071 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    1168                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    1169                     </abstract> 
    1170                     <descriptionSection> 
    1171                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    1172 &lt;P&gt; 
    1173 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    1174 &lt;P&gt; 
    1175 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    1176 &lt;P&gt; 
    1177 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    1178 &lt;P&gt; 
    1179 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    1274                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    1275                     <abstract> 
    1276                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    1277                     </abstract> 
    1278                     <descriptionSection> 
    1279                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    1280 &lt;P&gt; 
    1281 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    1282 &lt;P&gt; 
    1283 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    1284 &lt;P&gt; 
    1285 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    1286 &lt;P&gt; 
    1287 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    12991160                <name>Halley Bay, Antarctica</name> 
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     1179                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    1347                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
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    1383                     <abstract> 
    1384                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    1385                     </abstract> 
    1386                     <descriptionSection> 
    1387                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    1388 &lt;P&gt; 
    1389 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    1390 &lt;P&gt; 
    1391 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    1392 &lt;P&gt; 
    1393 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    1394 &lt;P&gt; 
    1395 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    14071199                <name>Halley Bay, Antarctica</name> 
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     1218                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    1455                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
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    1490                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    1491                     <abstract> 
    1492                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    1493                     </abstract> 
    1494                     <descriptionSection> 
    1495                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    1496 &lt;P&gt; 
    1497 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    1498 &lt;P&gt; 
    1499 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    1500 &lt;P&gt; 
    1501 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    1502 &lt;P&gt; 
    1503 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    1598                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    1599                     <abstract> 
    1600                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    1601                     </abstract> 
    1602                     <descriptionSection> 
    1603                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    1604 &lt;P&gt; 
    1605 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    1606 &lt;P&gt; 
    1607 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    1608 &lt;P&gt; 
    1609 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    1610 &lt;P&gt; 
    1611 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
    1612                         <contentType>text/plain</contentType> 
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    1621                     </descriptionSection> 
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    16231277                <name>Halley Bay, Antarctica</name> 
    16241278                <abbreviation/> 
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     1296                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
     1297                <abbreviation>chablis</abbreviation> 
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    16581299            </activity> 
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    1670                     </metadataDescriptionID> 
    1671                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    1672                     <abstract> 
    1673                         <abstractText/> 
    1674                     </abstract> 
    1675                     <descriptionSection> 
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    16881306                <name>Leeds: J(o1d) filter radiometer</name> 
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    1690                 <dgDataProductionTool> 
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    16941310            <observationstation> 
     
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    1706                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    1707                     <abstract> 
    1708                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    1709                     </abstract> 
    1710                     <descriptionSection> 
    1711                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    1712 &lt;P&gt; 
    1713 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    1714 &lt;P&gt; 
    1715 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    1716 &lt;P&gt; 
    1717 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    1718 &lt;P&gt; 
    1719 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
    1720                         <contentType>text/plain</contentType> 
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    1726                                 <URI>www.antarctica.ac.uk/Living_and_Working/Stations/Halley/index.php</URI> 
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    1729                     </descriptionSection> 
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    17311316                <name>Halley Bay, Antarctica</name> 
    17321317                <abbreviation/> 
    1733                 <dgObservationStation> 
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     1332                    <repositoryIdentifier>badc.nerc.ac.uk</repositoryIdentifier> 
     1333                    <localIdentifier>activity_activity_chablis</localIdentifier> 
     1334                </dgMetadataID> 
     1335                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
     1336                <abbreviation>chablis</abbreviation> 
     1337                <dgActivity/> 
    17661338            </activity> 
    17671339            <dataproductiontool> 
     
    17711343                    <localIdentifier>dpt_11634276925510602</localIdentifier> 
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    1776                         <repositoryIdentifier>badc.nerc.ac.uk</repositoryIdentifier> 
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    1779                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    1780                     <abstract> 
    1781                         <abstractText>Instrument developed to measure OH and HO2 - a challenging problem but important free radicals to measure due to their role in atmopsheric chemistry. The laser induced fluorescence at low pressure is measured.</abstractText> 
    1782                     </abstract> 
    1783                     <descriptionSection> 
    1784                         <dgDescriptionText>This instrument is part of the Universities Facility for Atmospheric Measurement.</dgDescriptionText> 
    1785                         <contentType>text/plain</contentType> 
    1786                     </descriptionSection> 
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    17961345                <name>Leeds: Fluorecence Assay by Gas Expansion instrument (FAGE)</name> 
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    1814                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    1815                     <abstract> 
    1816                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    1817                     </abstract> 
    1818                     <descriptionSection> 
    1819                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    1820 &lt;P&gt; 
    1821 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    1822 &lt;P&gt; 
    1823 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    1824 &lt;P&gt; 
    1825 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    1826 &lt;P&gt; 
    1827 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
    1828                         <contentType>text/plain</contentType> 
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    1834                                 <URI>www.antarctica.ac.uk/Living_and_Working/Stations/Halley/index.php</URI> 
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    18391355                <name>Halley Bay, Antarctica</name> 
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    1924                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    1925                     </abstract> 
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    1927                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    1928 &lt;P&gt; 
    1929 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    1930 &lt;P&gt; 
    1931 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    1932 &lt;P&gt; 
    1933 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    1934 &lt;P&gt; 
    1935 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    2031                     <abstract> 
    2032                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    2033                     </abstract> 
    2034                     <descriptionSection> 
    2035                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    2036 &lt;P&gt; 
    2037 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    2038 &lt;P&gt; 
    2039 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    2040 &lt;P&gt; 
    2041 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    2042 &lt;P&gt; 
    2043 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    2139                     <abstract> 
    2140                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
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    2143                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    2144 &lt;P&gt; 
    2145 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    2146 &lt;P&gt; 
    2147 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    2148 &lt;P&gt; 
    2149 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    2150 &lt;P&gt; 
    2151 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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     1491                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    2211                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    2212                     <abstract> 
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    22281501                <name>British Antarctic Survey: Spectral Radiometer</name> 
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    2247                     <abstract> 
    2248                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    2249                     </abstract> 
    2250                     <descriptionSection> 
    2251                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    2252 &lt;P&gt; 
    2253 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    2254 &lt;P&gt; 
    2255 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    2256 &lt;P&gt; 
    2257 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    2258 &lt;P&gt; 
    2259 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    22711511                <name>Halley Bay, Antarctica</name> 
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     1530                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    2319                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    2320                     <abstract> 
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    23361540                <name>British Antarctic Survey: Snow samples - Ion Chromatograph analysis</name> 
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    2354                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    2355                     <abstract> 
    2356                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    2357                     </abstract> 
    2358                     <descriptionSection> 
    2359                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    2360 &lt;P&gt; 
    2361 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    2362 &lt;P&gt; 
    2363 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    2364 &lt;P&gt; 
    2365 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    2366 &lt;P&gt; 
    2367 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    2377                     </descriptionSection> 
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    23791550                <name>Halley Bay, Antarctica</name> 
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     1569                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    2427                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    2428                     <abstract> 
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    24441579                <name>British Antarctic Survey: Metsensor (SIMPSON)</name> 
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    2462                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    2463                     <abstract> 
    2464                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    2465                     </abstract> 
    2466                     <descriptionSection> 
    2467                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    2468 &lt;P&gt; 
    2469 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    2470 &lt;P&gt; 
    2471 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    2472 &lt;P&gt; 
    2473 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    2474 &lt;P&gt; 
    2475 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    24871589                <name>Halley Bay, Antarctica</name> 
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     1608                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    2535                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    2536                     <abstract> 
    2537                         <abstractText>Metsensors on a 4 meter mast at the Halley CASLab site (Antarctica), including instruments to measure RH, temperature, wind direction and wind speed.</abstractText> 
    2538                     </abstract> 
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    25521618                <name>British Antarctic Survey: Metsensor (CASLAB)</name> 
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    2570                     <metadataDescriptionLastUpdated>2007-02-23</metadataDescriptionLastUpdated> 
    2571                     <abstract> 
    2572                         <abstractText>The Clean Air Sector Laboratory (CASLab) is located 1km from the Halley station in Antarctica and is dedicated to studies of atmospheric chemistry, air/snow exchange and boundary layer meteorology.</abstractText> 
    2573                     </abstract> 
    2574                     <descriptionSection> 
    2575                         <dgDescriptionText>CASLab is located 1km from Halley station, in a clean air sector that receives minimal interference from station generators. Routine access is by ski or on foot, to avoid contamination of the area.  
    2576 &lt;P&gt;The CASLab was commissioned in January 2003, and has been used for an ongoing programme of aerosol and fundamental photochemistry research. It has specialised inlets to allow representative sampling of aerosols, and trace gas sampling is done from a central inlet stack with very short residence time.  
    2577 &lt;P&gt;As well as ongoing research, CASLab hosts measurement intensives such as the extensive CHABLIS campaign (Chemistry of the Antarctic Boundary Layer and the Interface with Snow) 
    2578 &lt;P&gt; 
    2579 Results from CASLab science will help us to understand how the natural unpolluted atmosphere behaves, and also the way ice core records were built up and hence exactly what the signals in ice mean.</dgDescriptionText> 
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    25911628                <name>Halley Clean Air Sector Laboratory (CASLab)</name> 
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     1647                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    2639                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    2640                     <abstract> 
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    26561657                <name>British Antarctic Survey: NOx chemiluminescence analyser</name> 
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    2674                     <metadataDescriptionLastUpdated>2007-02-23</metadataDescriptionLastUpdated> 
    2675                     <abstract> 
    2676                         <abstractText>The Clean Air Sector Laboratory (CASLab) is located 1km from the Halley station in Antarctica and is dedicated to studies of atmospheric chemistry, air/snow exchange and boundary layer meteorology.</abstractText> 
    2677                     </abstract> 
    2678                     <descriptionSection> 
    2679                         <dgDescriptionText>CASLab is located 1km from Halley station, in a clean air sector that receives minimal interference from station generators. Routine access is by ski or on foot, to avoid contamination of the area.  
    2680 &lt;P&gt;The CASLab was commissioned in January 2003, and has been used for an ongoing programme of aerosol and fundamental photochemistry research. It has specialised inlets to allow representative sampling of aerosols, and trace gas sampling is done from a central inlet stack with very short residence time.  
    2681 &lt;P&gt;As well as ongoing research, CASLab hosts measurement intensives such as the extensive CHABLIS campaign (Chemistry of the Antarctic Boundary Layer and the Interface with Snow) 
    2682 &lt;P&gt; 
    2683 Results from CASLab science will help us to understand how the natural unpolluted atmosphere behaves, and also the way ice core records were built up and hence exactly what the signals in ice mean.</dgDescriptionText> 
    2684                         <contentType>text/plain</contentType> 
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    2693                     </descriptionSection> 
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    26951667                <name>Halley Clean Air Sector Laboratory (CASLab)</name> 
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     1686                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
     1687                <abbreviation>chablis</abbreviation> 
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    2743                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    2744                     <abstract> 
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    2746                     </abstract> 
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    2758                     </descriptionSection> 
    2759                 </dgMetadataDescription> 
    27601696                <name>British Antarctic Survey: Filters - Ion Chromatograph analysis</name> 
    27611697                <abbreviation>bas-filters</abbreviation> 
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    27661700            <observationstation> 
     
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    2778                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    2779                     <abstract> 
    2780                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    2781                     </abstract> 
    2782                     <descriptionSection> 
    2783                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    2784 &lt;P&gt; 
    2785 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    2786 &lt;P&gt; 
    2787 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    2788 &lt;P&gt; 
    2789 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    2790 &lt;P&gt; 
    2791 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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     1725                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    2851                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    2852                     <abstract> 
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    28681735                <name>British Antarctic Survey: Denuder HNO3</name> 
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    2886                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    2887                     <abstract> 
    2888                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    2889                     </abstract> 
    2890                     <descriptionSection> 
    2891                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    2892 &lt;P&gt; 
    2893 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    2894 &lt;P&gt; 
    2895 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    2896 &lt;P&gt; 
    2897 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    2898 &lt;P&gt; 
    2899 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    29111745                <name>Halley Bay, Antarctica</name> 
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     1764                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    2959                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    2960                     <abstract> 
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    29761774                <name>British Antarctic Survey: Condensation Particle Counter (CPC)</name> 
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    2994                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    2995                     <abstract> 
    2996                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    2997                     </abstract> 
    2998                     <descriptionSection> 
    2999                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    3000 &lt;P&gt; 
    3001 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    3002 &lt;P&gt; 
    3003 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    3004 &lt;P&gt; 
    3005 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    3006 &lt;P&gt; 
    3007 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    30191784                <name>Halley Bay, Antarctica</name> 
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     1803                <name>Chemistry of the Antarctic Boundary Layer and the Interface with Snow</name> 
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    3067                     <metadataDescriptionLastUpdated>2006-11-13</metadataDescriptionLastUpdated> 
    3068                     <abstract> 
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    30841813                <name>British Antarctic Survey: Aethalometer</name> 
    30851814                <abbreviation>bas-aethalometer</abbreviation> 
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    3102                     <metadataDescriptionLastUpdated>2006-11-07</metadataDescriptionLastUpdated> 
    3103                     <abstract> 
    3104                         <abstractText>Halley is the UK's most isolated station (75.35S, 26.39W) and is afloat on an ice shelf on the mainland of Antarctica. In winter there is darkness for 105 days - darkness relieved by magnificent auroral displays. The relief of Halley is a major undertaking with supplies being landed twice a year by ship onto the ice shelf and then towed on sledges by Sno-cats to Halley, some 12 km distant from the ice edge.</abstractText> 
    3105                     </abstract> 
    3106                     <descriptionSection> 
    3107                         <dgDescriptionText>Halley V is the fifth station to be built on the Brunt Ice Shelf. The first was established for the International Geophysical Year (IGY) in 1957-58, and named after the astronomer Edmond Halley. It filled an important gap in the IGY Antarctic network with studies in meteorology, glaciology, seismology, radio astronomy, and geospace science. Many of these studies have continued uninterrupted since then.  
    3108 &lt;P&gt; 
    3109 Studies at Halley are crucial for a global perspective on ozone depletion, atmospheric pollution, sea level rise and climate change. Ozone has been measured at Halley since 1956. A spring-time depletion in stratospheric ozone was discovered by BAS in 1985, and this led very quickly to the international response to curtail production of CFCs.  
    3110 &lt;P&gt; 
    3111 Halley, lying within the auroral zone, is ideally situated for geospace research. An HF (SHARE) radar, supported by a suite of other powerful radio and optical instruments including remote unmanned Automatic Geophysical Observatories, provides an unparalleled spatial picture of the consequences of geospace interactions in the upper atmosphere over an area of around three million square km above the South Pole.  
    3112 &lt;P&gt; 
    3113 Halley V contains a mix of building technologies. Three buildings are located on platforms on steel legs, which are jacked up annually to keep them clear of the accumulated snowfall. An accommodation building and a garage weighing over 50 tons are mounted on skis and towed each year to a new position. Halley I to Halley IV were built directly on the snow and were each abandoned within ten years, having been crushed by the overlying ice.  
    3114 &lt;P&gt; 
    3115 The station operates throughout the year with a maximum population of 65 in the summer and an average of 15 over winter. The Emperor penguin colony near Halley, which is present from May to February, is a special attraction, while other recreational trips take members further inland towards the "hinge zone" where the floating ice shelf is joined to the continent.</dgDescriptionText> 
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    31921852                <name>British Antarctic Survey: Aerolaser HCHO</name> 
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    3212                         <abstractText>The Clean Air Sector Laboratory (CASLab) is located 1km from the Halley station in Antarctica and is dedicated to studies of atmospheric chemistry, air/snow exchange and boundary layer meteorology.</abstractText> 
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    3215                         <dgDescriptionText>CASLab is located 1km from Halley station, in a clean air sector that receives minimal interference from station generators. Routine access is by ski or on foot, to avoid contamination of the area.  
    3216 &lt;P&gt;The CASLab was commissioned in January 2003, and has been used for an ongoing programme of aerosol and fundamental photochemistry research. It has specialised inlets to allow representative sampling of aerosols, and trace gas sampling is done from a central inlet stack with very short residence time.  
    3217 &lt;P&gt;As well as ongoing research, CASLab hosts measurement intensives such as the extensive CHABLIS campaign (Chemistry of the Antarctic Boundary Layer and the Interface with Snow) 
    3218 &lt;P&gt; 
    3219 Results from CASLab science will help us to understand how the natural unpolluted atmosphere behaves, and also the way ice core records were built up and hence exactly what the signals in ice mean.</dgDescriptionText> 
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    32961891                <name>British Antarctic Survey: Aerolaser CO</name> 
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    3316                         <abstractText>The Clean Air Sector Laboratory (CASLab) is located 1km from the Halley station in Antarctica and is dedicated to studies of atmospheric chemistry, air/snow exchange and boundary layer meteorology.</abstractText> 
    3317                     </abstract> 
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    3319                         <dgDescriptionText>CASLab is located 1km from Halley station, in a clean air sector that receives minimal interference from station generators. Routine access is by ski or on foot, to avoid contamination of the area.  
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    3321 &lt;P&gt;As well as ongoing research, CASLab hosts measurement intensives such as the extensive CHABLIS campaign (Chemistry of the Antarctic Boundary Layer and the Interface with Snow) 
    3322 &lt;P&gt; 
    3323 Results from CASLab science will help us to understand how the natural unpolluted atmosphere behaves, and also the way ice core records were built up and hence exactly what the signals in ice mean.</dgDescriptionText> 
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    34001930                <name>British Antarctic Survey: 2b Ozone</name> 
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    3418                     <metadataDescriptionLastUpdated>2007-02-23</metadataDescriptionLastUpdated> 
    3419                     <abstract> 
    3420                         <abstractText>The Clean Air Sector Laboratory (CASLab) is located 1km from the Halley station in Antarctica and is dedicated to studies of atmospheric chemistry, air/snow exchange and boundary layer meteorology.</abstractText> 
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    3423                         <dgDescriptionText>CASLab is located 1km from Halley station, in a clean air sector that receives minimal interference from station generators. Routine access is by ski or on foot, to avoid contamination of the area.  
    3424 &lt;P&gt;The CASLab was commissioned in January 2003, and has been used for an ongoing programme of aerosol and fundamental photochemistry research. It has specialised inlets to allow representative sampling of aerosols, and trace gas sampling is done from a central inlet stack with very short residence time.  
    3425 &lt;P&gt;As well as ongoing research, CASLab hosts measurement intensives such as the extensive CHABLIS campaign (Chemistry of the Antarctic Boundary Layer and the Interface with Snow) 
    3426 &lt;P&gt; 
    3427 Results from CASLab science will help us to understand how the natural unpolluted atmosphere behaves, and also the way ice core records were built up and hence exactly what the signals in ice mean.</dgDescriptionText> 
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    3433                                 <name>URI</name> 
    3434                                 <URI>www.antarctica.ac.uk/BAS_Science/programmes2005-2010/CACHE/projects/CEFAC/caslab/index.html</URI> 
    3435                             </dgSimpleLink> 
    3436                         </descriptionOnlineReference> 
    3437                     </descriptionSection> 
    3438                 </dgMetadataDescription> 
    34391940                <name>Halley Clean Air Sector Laboratory (CASLab)</name> 
    34401941                <abbreviation>caslab</abbreviation> 
    3441                 <dgObservationStation> 
    3442                     <contactDetails> 
    3443                         <fax>unknown</fax> 
    3444                         <telephone>unknown</telephone> 
    3445                         <address> 
    3446                             <addressline>unknown</addressline> 
    3447                             <city>unknown</city> 
    3448                             <postcode>unknown</postcode> 
    3449                             <country>unknown</country> 
    3450                         </address> 
    3451                         <URI>unknown</URI> 
    3452                     </contactDetails> 
    3453                     <dgStationaryPlatform> 
    3454                         <position> 
    3455                             <positionLatitude>0</positionLatitude> 
    3456                             <positionLongitude>0</positionLongitude> 
    3457                         </position> 
    3458                     </dgStationaryPlatform> 
    3459                 </dgObservationStation> 
     1942                <dgObservationStation/> 
    34601943            </observationstation> 
    34611944        </RelatedDeployment> 
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