Global Change Master Directory (GCMD) Mission “To assist the scientific community in the discovery of Earth science data, related services, and ancillary information, which includes descriptions of instruments and platforms.” Our primary responsibility is to provide descriptions of NASA resources and provide NASA scientists a comprehensive and high quality database to reduce overall expenditures for scientific data collection and dissemination.

GCMD: Meeting Obligations to the Community Metadata Sharing and Linkages to Data Systems NASANon-NASA *April 2010

International Directory Network (IDN)

Multiple Entry Points for Discovering Earth Science Data and Services Keywords Data Centers Projects Platforms/ Sources Instruments Map/Date Search Location Name Search Full-text NASA Data Data Services

Controlled Keyword Sets Science Keywords Services Keywords Locations Instruments * Platforms * Spatial/Temporal Data Resolution Range Visualization Type Analysis Type URL_Content Type Chronostratigraphic Units ISO Topic Category Data Set Language Data Centers * Personnel * Projects * *Authors may create new entries, but software checks for uniqueness & consistency. Unique Entry_IDs are also assured. Required

Five-Level Keyword Hierarchy 6 Land Surface Landforms/ Processes Fluvial LandformsDeltasRiverValleyFluvial ProcessesSedimentation Sediment Composition Downcutting Surface Radiative Processes AlbedoReflectanceTopographyTerrain ElevationDEM Topographic Effects Topic Term Variable Level 1 Variable Level 2 Variable Level 3

Data Service Descriptions Data Service Population by KeywordsData Services Interface  Describe Earth science related tools, software, and services.  Relate to the processing, viewing, analysis, archival, retrieval, production, interpretation, acquisition, modeling, visualizing, formatting, or indexing of Earth science data.  Provide a link between services and associated data set descriptions.

Contributing Earth Science Data and Service Descriptions Tools for Creating, Validating, and Submitting Information About Your Data Set or Service.

Metadata Submission, Validation and QA 1.Validation (controlled fields and syntax) 2.Science staff - metadata coordinators 3.Partnership between coordinators and data providers

Link Checker/Editor  Internal “Web-Based” Tool (developed to fix EOSDIS links).  Scans the entire GCMD metadata collection (2 times a month).  Provides reports of broken and redirected URLs based on scans. Reports are also available as a text file and can be distributed to metadata providers.  Permits internal users to update broken links directly in the metadata.  Caches all web pages to provide a reference in case a site is extinct.  Implemented in docBUILDER to warn users of broken links at validation.

Revised, New, and deleted SERFs Focus on Quality of Metadata Content Revised, New, and deleted DIFs Revised, New, and deleted SERFs Focus on Quality of Metadata Content

Our Users: Occupation

Website Usage Over Time

Directory Population Over Time ( ) Population Value Current Population Data Sets: 22,508 Data Services: 2,194 Climate Diagnostics: 203 4,000 8,000 12,000 16,000 20,000 24,000

GCMD Portal Collaborations Portals are subset views of the directory, allowing organizations to maintain and document their contributed data set and services descriptions.

Portal Growth ( ) Number of Portals Year

CEOS Climate Diagnostics: Climate Visualizations for Environmental Decision Making The Climate Diagnostics directory offers climate diagnostic visualizations that can be easily interpreted by decision makers. This site is designed to enhance the Global Earth Observation System of Systems (GEOSS) by providing these visualizations of climate trends and variability. Users can search by controlled Earth science keywords, Essential Climate Variables (ECVs), Societal Benefit Areas (SBAs), or through a full-text search. Controlled location keywords and a Google map are also available to Users can search by controlled Earth science keywords, Essential Climate Variables (ECVs), Societal Benefit Areas (SBAs), or through a full-text search. Controlled location keywords and a Google map are also available to query on a location of interest. Choose “Add Climate Diagnostics” to contribute visualizations.

Code 610 Portal (mockup)

Science User Working Group Meeting June 2-4, 2010 Building 34