Links to keyword schemes

Use of standardized keyword vocabularies is essential to interoperability of cross discipline resource catalogs.This page provids links to some existing keyword schemes.

Ontology-based Interpretation of Keywords for Semantic Search (not a keyword list, but very relevant.)

NASA Global change master directory (GCMD) science keywords

National geophysical data center discussion of Keywords

Marine metadata initiative vocabularies

DLESE Controlled vocabularies for completing certain metadata fields