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Exploring U.S. Joint Global Ocean Flux Study

Learn about U.S. JGOFS, the Data Management Office, and Distributed Data Management System. Discover how to access, visualize, and compare oceanographic data through the U.S. JGOFS Live Access Server Interface.

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Exploring U.S. Joint Global Ocean Flux Study

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  1. U.S. Joint Global Ocean Flux StudyU.S. JGOFSAn Introduction Cyndy Chandler U.S. JGOFS Data Management Office December 2003 LTER ~ U.S. JGOFS Joint Workshop U.S. JGOFS DMO

  2. snow day ! U.S. JGOFS DMO

  3. Topics in today’s presentation: • What is U.S. JGOFS? • What is the DMO? • the JGOFS DDMS • U.S. JGOFS data server U.S. JGOFS DMO

  4. What is U.S. JGOFS? U.S. Joint Global Ocean Flux Study • part of multinational JGOFS • long term (U.S. 1989-2005) • multidisciplinary (bio, chem, PO, geology) • process studies (U.S. 1989-1998), time-series, global surveys, synthesis and modeling, data management • investigate ocean carbon flux U.S. JGOFS DMO

  5. U.S. JGOFS Data Management Office (DMO) • formed in 1988 specifically to meet needs of U.S. JGOFS • assist PIs to submit their data to DMO • ongoing quality control of data • develop and maintain simple, reliable interface to program data • provide timely, easy access to project results • collaborate with other program DMO • publish U.S. JGOFS data reports • plan final archive of U.S. JGOFS information U.S. JGOFS DMO

  6. JGOFS Distributed Data Management System (DDMS) • distributed, object-oriented system • originally developed by Glenn Flierl, James Bishop, Satish Paranjpe, David Glover • supports multidisciplinary, multi-institutional data acquisition project • data storage format and location irrelevant • data interpreted by ‘methods’ U.S. JGOFS DMO

  7. U.S. JGOFS Data System Web Interface U.S. JGOFS DMO

  8. Data Listing • select dataset • select variable(columns) • select range(rows) • view metadata U.S. JGOFS DMO

  9. Live Access Server Interface provides access to synthesis and model results U.S. JGOFS DMO

  10. Live Access Server ~ LAS • LAS Development Team • Steve Hankin • Jon Callahan • Joe Sirott • located at UW/JISAO/NOAA University of Washington’s Joint Institute for the Study of the Atmosphere and Ocean and NOAA Pacific Environmental Laboratory U.S. JGOFS DMO

  11. Live Access Server Interface • configurable Web server • data and metadata interface • provides access to geo-referenced scientific data • presents distributed data sets as a unified virtual data base (DODS) • uses Ferret as the default visualization application • visualize data with on-the-fly graphics • request custom subsets of variables in a variety of file formats • access background reference material (metadata) • compare variables from distributed sources U.S. JGOFS DMO

  12. LAS enables a data server to … • unify access to multiple types of data in a single interface • create thematic data collections from distributed data sources • offer derived products on the fly • offer variety of visualization styles • customized for the data U.S. JGOFS DMO

  13. U.S. JGOFS LAS Interface • interface to data and metadata • data sub-selection (selections, projections) • multi-variable support • gridded vs. in-situ data differencing • multiple views • (property-property, depth horizon, cruise tracks, overplots) • multiple products (ps, gif, text, NetCDF) U.S. JGOFS DMO

  14. LAS v6select dataset andvariables U.S. JGOFS DMO

  15. LAS constraints • select dataset • select variable • set constraints select view (XYZT) select output type selections: lat/lon time depth range U.S. JGOFS DMO

  16. LAS output • select dataset • select variable • set constraints • output LAS U.S. JGOFS DMO

  17. Comparison Overlay Plot U.S. JGOFS DMO

  18. chlorophyll(May) shaded Nitrate (April)at 10 meters contours U.S. JGOFS DMO

  19. U.S. JGOFS web sitehttp://usjgofs.whoi.edu U.S. JGOFS DMO

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