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The GCMD staff is pleased to announce the release of version 7.0 of the GCMD/IDN keywords. This release represents a major revision and expansion of the Human Dimensions and Climate Indicators keywords. Given that the hierarchy was expanded to two additional levels in 2007, these keyword changes offer additional detail and focus for the user when discovering related data sets and services.  Additions and changes to the keywords were the result of many years of collaboration with the Earth Science community.

If you are a user of the Keyword Management System (KMS) for access to the keywords, please refresh the service to ingest the latest keywords. To access the KMS, please use your EOSDIS User Registration System (URS) username and password. If you do not have a URS account, you may create one at the following link: Documentation on the KMS is available at If you have any questions, please contact our user support office at

Please use the following citation when using the GCMD keywords:

Olsen, L. M.,  G. Major,  K. Shein,  J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C. Solomon, M. Holland, T. Northcutt, R. A. Restrepo & R. Bilodeau, 2012. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version

For additional  information on the science keywords and how to suggest changes or additions, please see:

We value your feedback.  Thank you for your interest in the science keywords.

Lola M. Olsen & the GCMD Team

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