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Federal Geographic Data Committee Content Standard for Digital Geospatial Metadata

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Federal Geographic Data Committee Content Standard for Digital Geospatial Metadata
NameFederal Geographic Data Committee Content Standard for Digital Geospatial Metadata
AbbreviationFGDC CSDGM
Established1994
JurisdictionUnited States Department of the Interior
Related standardsISO 19115, Dublin Core Metadata Initiative, Open Geospatial Consortium

Federal Geographic Data Committee Content Standard for Digital Geospatial Metadata The Federal Geographic Data Committee Content Standard for Digital Geospatial Metadata is a metadata specification created to describe spatial datasets and geospatial services used by agencies such as the United States Geological Survey, the National Oceanic and Atmospheric Administration, the United States Census Bureau, and the Environmental Protection Agency. It provides structured fields for citation, identification, extent, distribution, and quality, and has influenced international efforts by organizations including the International Organization for Standardization, the Open Geospatial Consortium, and the Dublin Core Metadata Initiative. The standard underpins cataloging practices across infrastructures like the National Spatial Data Infrastructure and federal clearinghouses overseen by committees such as the Interagency Committee on Surveying and Mapping.

Overview

The standard specifies a content model for describing geospatial resources used by federal programs such as National Geospatial-Intelligence Agency projects, academic initiatives at institutions like Stanford University and Massachusetts Institute of Technology, and state agencies in jurisdictions including California, Texas, and New York (state). It defines mandatory and optional elements for provenance linked to organizations such as the Library of Congress, quality statements used by the United States Fish and Wildlife Service, and distribution information relevant to repositories like the National Archives and Records Administration. The model harmonizes with catalog services employed by platforms associated with Esri, Google, and the Apache Software Foundation.

History and Development

Development began in the early 1990s under direction of the Federal Geographic Data Committee and stakeholders including the National Science Foundation and the Department of Defense. The 1994 release responded to interoperability challenges encountered by projects like Landsat programs administered by the National Aeronautics and Space Administration and the United States Geological Survey. Subsequent revisions reflected input from standards bodies such as the International Organization for Standardization and implementers like Esri, researchers at University of California, Berkeley, and vendors serving Department of Transportation initiatives. The standard shaped federal policy instruments like the E-Government Act of 2002 and informed data catalog development at agencies including the Federal Emergency Management Agency.

Structure and Content Elements

The content model organizes metadata into sections including identification, citation, extent, spatial reference, attributes, distribution, and data quality. Identification elements reference authoritative sources such as the Library of Congress Name Authority File and citation elements follow conventions used by the American Psychological Association and the Chicago Manual of Style used in federal publications. Spatial referencing ties to coordinate systems produced by the National Geodetic Survey and projection parameters used in products from the National Oceanic and Atmospheric Administration and United States Geological Survey. Quality sections use lineage descriptions adopted by programs like National Aeronautics and Space Administration remote sensing projects and completeness reports relevant to the United States Census Bureau.

Implementation and Use

Agencies implement the standard in catalog services such as the National Spatial Data Infrastructure portal, state geospatial clearinghouses in places like Florida and Washington (state), and commercial platforms from Esri and open-source stacks from the Apache Software Foundation. Implementation pathways include XML encodings used by the Open Geospatial Consortium Catalog Service for the Web and mappings to ISO 19115 employed by international projects like the European Space Agency missions. Training and outreach have been conducted by institutions including the National Geospatial-Intelligence Agency and the Association of American Geographers.

Compliance and Certification

Compliance mechanisms rely on agency policies from entities like the Office of Management and Budget and technical guidance from the Federal Geographic Data Committee itself. Validation tools produced by collaborators such as Esri, the Open Geospatial Consortium, and academic groups at the University of Illinois Urbana-Champaign check XML schemas and element conformance. Certification programs and accreditation discussions have involved stakeholders including the Department of Homeland Security, the National Science Foundation, and professional bodies such as the American Society for Photogrammetry and Remote Sensing.

The standard interoperates with international standards like ISO 19115, metadata schemas from the Dublin Core Metadata Initiative, and services defined by the Open Geospatial Consortium. Crosswalks have been created to map elements to Catalog Service for the Web profiles used by projects at the European Commission, the Australian Bureau of Statistics, and the United Nations initiatives on geospatial information. Interoperability efforts often involve software from vendors such as Esri and open-source projects hosted by the Apache Software Foundation and collaborations with research centers at Massachusetts Institute of Technology.

Criticisms and Revisions

Critics—from consultants working with state governments to academic researchers at University of Michigan and Cornell University—have cited verbosity, inflexibility, and maintenance burdens. Revisions aimed to streamline elements for modern web services, aligning with ISO efforts and community practices promoted by the Open Geospatial Consortium and the Dublin Core Metadata Initiative. Ongoing debates involve integration with linked data frameworks championed by groups such as the World Wide Web Consortium and implementation challenges faced by practitioners in agencies like the National Oceanic and Atmospheric Administration and the United States Geological Survey.

Category:Geographic metadata standards