| 22 | 4. Important namespaces:- |
| 23 | |
| 24 | Important namespaces |
| 25 | |
| 26 | || Namespace || Name || Example where used || |
| 27 | || http://vocab.ndg.nerc.ac.uk/null || A conventional namespace to indicate that the namespace is unknown || fill in later || |
| 28 | || http://vocab.ndg.nerc.ac.uk/C320 || ISO 3166 alpha2 - two letter country codes || fill in later || |
| 29 | || http://vocab.ndg.nerc.ac.uk/P011 || BODC Usage Parameter Terms || fill in later || |
| 30 | || http://vocab.ndg.nerc.ac.uk/P021 || BODC Discovery Parameter Terms || fill in later || |
| 31 | || http://vocab.ndg.nerc.ac.uk/N010 || NDG Data Provider Terms (mostly MDIP relevant?) || fill in later || |
| 32 | || http://vocab.ndg.nerc.ac.uk/P04 || Union of P041 and P042 || fill in later || |
| 33 | || http://vocab.ndg.nerc.ac.uk/P041 || Live concatenations of GCMD Science Keywords (category > topic > term > variable) || fill in later || |
| 34 | || http://vocab.ndg.nerc.ac.uk/P042 || Live concatenations of GCMD Science Keywords (category > topic > term > variable) deprecated by GCMD - PLEASE DO NOT USE TERMS FROM THIS VOCAB || fill in later || |
| 35 | || http://vocab.ndg.nerc.ac.uk/P04 || Union of P041 and P042 || fill in later || |
| 36 | || http://vocab.ndg.nerc.ac.uk/P111 || GCMD Science Keywords categories, for use in MOLES with sub-terms || fill in later || |
| 37 | || http://vocab.ndg.nerc.ac.uk/P121 || GCMD Science Keywords topics, for use in MOLES with sub-terms || fill in later || |
| 38 | || http://vocab.ndg.nerc.ac.uk/P131 || GCMD Science Keywords terms, for use in MOLES with sub-terms || fill in later || |
| 39 | || http://vocab.ndg.nerc.ac.uk/P141 || GCMD Science Keywords variables, for use in MOLES with sub-terms || fill in later || |
| 40 | || http://vocab.ndg.nerc.ac.uk/P051 || ISO topic list, used for both DIF and 19115 || fill in later || |
| 41 | || http://vocab.ndg.nerc.ac.uk/P061 || BODC unit names || fill in later || |
| 42 | || http://vocab.ndg.nerc.ac.uk/P071 || CF Standard Names || fill in later || |
| 43 | || http://vocab.ndg.nerc.ac.uk/P101 || GCMD instrument valids || fill in later || |
| 44 | || http://vocab.ndg.nerc.ac.uk/P161 || GCMD project valids || fill in later || |
| 45 | || http://vocab.ndg.nerc.ac.uk/P171 || GCMD location valids || fill in later || |
| 46 | || http://vocab.ndg.nerc.ac.uk/P181 || GCMD chronostratigraphic valids || fill in later || |