Registering Earth Science Data and Data Related Services Using NASA’s Global Change Master Directory (GCMD) Tyler Stevens (GIS/Services Coordinator) ESIP.

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Presentation transcript:

Registering Earth Science Data and Data Related Services Using NASA’s Global Change Master Directory (GCMD) Tyler Stevens (GIS/Services Coordinator) ESIP Federation Meeting Technical Breakout Session 2A January 9, 2008

Discussion Outline I.Why Register in the GCMD? II. Registering Data Sets and Services III. Additional Registration Methods IV. Demonstration of Metadata Authoring Tool

I. Why Register in the GCMD? 1. For Enhanced Data and Service Discovery -Controlled Science Keywords, Ancillary Keywords (Data Centers, Instruments, Projects, Platforms, Locations) -Keyword Refinements 2.For Direct Access to Data and Services -Related URL > Get Data -Related URL > Get Service 3. For Metadata Content and Wide Usage 4. For Metadata Interoperability -FGDC, ISO

1. Enhanced Data Discovery Through GCMD’s Controlled Keyword Sets Science Keywords Services Keywords Locations Instruments * Platforms * Spatial/Temporal Data Resolution Range 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

1. Enhanced Data Discovery Through Keyword Refinements Keyword Refinement Options Refine byCategoryFull Text “Breadcrumbs”

2. Direct Access to Data and Services GET SERVICE > ACCESS MAP VIEWER Provides access to geo-referenced geospatial data in a web interface. Got Data? GET DATA

3. Metadata Content

3. Wide Usage North America Europe Asia Australia South America Africa Other January December 2007 Global Usage

1. Develop an XSLT Stylesheet based on mapping XSLT Editor Sample FGDC XML document Edit XSLT Stylesheet DIF XML FGDC XML Formatted DIF XML Translate using Xalan Format using HTML Tidy DIF HTML 2. Translate and Format Document 4. Metadata Interoperability 3. Submit to the GCMD

II. Registering Data Sets and Services Online Metadata Authoring Tool Validate PreviewSubmit to GCMD Metadata in Queue QA/QC Metadata and Load Into Database Metadata In Database Retrieve from Database to Update

III: Additional Registration Methods Metadata Harvesting/Metadata Transfer  OAI-PMH  Z39.50 Bulk Metadata Transfer/Ingest

Why OAI-PMH?  OAI Server independent of main database  Administrator controls metadata availability  Queries standardized  Software is open source  Metadata Compatibility Dublin Core, FGDC, DIF, ISO XSLT or XML Schema Database Computer running harvester software OAI-PMH Repository I. II. OAI-PMH Architecture for Metadata Harvesting

Metadata Transfer/Ingest Z39.50RsyncFTPBulk XML GCMD Coordinators Metadata In Database OAI-PMH Validate Publish

IV. Demonstration of Metadata Authoring Tool

Thank You Tyler Stevens (GIS/Services Coordinator) Special Thanks to GCMD staff for their assistance and contributions. Picture Credit: Home Town USA Inc – Washington D.C.