Global Change Master Directory (GCMD)

NASA’s Global Change Master Directory (GCMD) metadata and keyword structures are one of NASA’s contributions to the international Committee on Earth Observation Satellites (CEOS), where the GCMD is known as the CEOS International Directory Network (IDN). The GCMD was deprecated by NASA’s Earth Science Data and Information System (ESDIS) Project in June 2020. While no changes were made to the directory, all legacy GCMD links now redirect to the CEOS IDN.

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