Global Change Master Directory (GCMD)MissionMission

“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 CommunityMetadata Sharing and Linkages to Data Systems

NASA Non-NASA

*April 2010

International Directory Network (IDN)

Multiple Entry Points for Discovering Earth Science Data and

Services

Keywords

Data Centers

ProjectsPlatforms/ Sources

InstrumentsMap/Date SearchLocation 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 Five-Level Keyword HierarchyKeyword Hierarchy

6

Topic

Term

Variable Level 1

Variable Level 2

Variable Level 3

Data Service Descriptions

Data Service Population by Keywords Data 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/EditorLink Checker/Editor

Internal “Web-Based” Tool (developed to fix EOSDIS Internal “Web-Based” Tool (developed to fix EOSDIS links).links). Scans the entire GCMD metadata collection (2 times a Scans the entire GCMD metadata collection (2 times a month).month). Provides reports of broken and redirected URLs based Provides reports of broken and redirected URLs based on scans. Reports are also available as a text file and on scans. Reports are also available as a text file and can be distributed to metadata providers.can be distributed to metadata providers. Permits internal users to update broken links Permits internal users to update broken links directly in the metadata.directly in the metadata. Caches all web pages to provide a reference in case a Caches all web pages to provide a reference in case a site is extinct.site is extinct. Implemented in docBUILDER to warn users of broken Implemented in docBUILDER to warn users of broken links at validation.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 (1999-2009)Population Value

Current PopulationData Sets: 22,508

Data Services: 2,194Climate 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.

http://gcmd.nasa.gov/Data/portal_index.html

Portal Growth (1999-2009)N

umbe

r of P

orta

ls

Year

CEOS Climate Diagnostics: Climate Visualizations for Environmental Decision Making

The Climate Diagnostics directory offers climate diagnostic visualizations that can be 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 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 Observation System of Systems (GEOSS) by providing these visualizations of climate trends

and variability.and variability.

Users can search by controlled Earth science keywords, Users can search by controlled Earth science keywords, Essential Climate Variables (ECVs), Societal Benefit Essential Climate Variables (ECVs), Societal Benefit Areas (SBAs), or through a full-text search. Areas (SBAs), or through a full-text search. Controlled location keywords and a Google map are also Controlled location keywords and a Google map are also available to 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