Global Change Master Directory, US National Aeronautics and Space Administration (NASA)

The GCMD offers authoring tools, which conform to international standards, to write, directly submit, and directly update metadata records. The GCMD offers descriptions of Earth science data sets using a specified set of information - known as the Directory Interchange Format (DIF). The GCMD's philosophy for using the DIF is that the specific set of attributes, the content metadata, is the critical set needed for a user to determine if the data sets returned from a database query are those that define viable data sets for the user's needs. Using a specific set of fields also helps to "normalize" the search for data sets through the use of several alternative search engines, including keywords to search for data and services.

Metadata Access
Creator NASA staff and contributors
Publisher Canadian Cryospheric Information Network
Contributor ArcticNet
Publication Year 2015
Rights Public
Language English
Discipline Environmental Research
Spatial Coverage (90S-90N,180W-180E)
Temporal Coverage Begin 1880-01-01T11:59:59Z
Temporal Coverage End 9999-12-31T11:59:59Z