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Tools for accessing distributed in-situ data collections

Tools for accessing distributed in-situ data collections. Donald W. Denbo, NOAA/PMEL-JISAO Jason E. Fabritz, NOAA/PMEL-JISAO Bernard J. Kilonsky, Sea Level Center/ADCP Center, University of Hawaii John R. Osborne, OceanAtlas Software L. Charles Sun, NOAA/NODC

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Tools for accessing distributed in-situ data collections

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  1. Toolsfor accessing distributed in-situ data collections Donald W. Denbo, NOAA/PMEL-JISAO Jason E. Fabritz, NOAA/PMEL-JISAO Bernard J. Kilonsky, Sea Level Center/ADCP Center, University of Hawaii John R. Osborne, OceanAtlas Software L. Charles Sun, NOAA/NODC Willa H. Zhu, NOAA/JISAO Nancy Soreide, NOAA/PMEL AMS IIPSFeb 9-13 2003, Long Beach, CA

  2. Challenge • Locating and selecting individual observations from large, distributed collections of in situ data observations • Examples: Individual oceanic or atmospheric profiles, time series, buoy tracks, etc.

  3. Some solutions • Tools and Applications • LDAP Directory Services • NdEdit for subsetting large in-situ collections • Interactive Java graphics • Intensive exploration of multiple data types • OPeNDAP (DODS) clients and servers for in-situ data • Access from Desktop and Web • Assembled from OpenSource components • http://www.epic.noaa.gov/epic/software/ep_java.htm

  4. LDAP Directory ServiceFinding distributed data collections • Search on geographic region, observed quantities or keyword • Automatically populated from data servers • Metadata instantly known to LDAP directories • Access control for experimental data products • Open Source • Standards-based • Platform independent, • Scalable, extensible, • Supports desktop or web client

  5. NdEdit Explore Data Locations and Subset Data Collections • Interactive, linked windows • View any 2D sliice • xy, xt, xz, yt, yz, yt • Investigate space-time distribution • Select data • in any View Select time rangeSee datain range X-Y map view Y-Ttime range X-Y map view Y-Ttime range

  6. NdEdit Section Tool - select stations along a depth contour

  7. NdEdit Selected stations are in a narrow time band

  8. NdEdit Polygon tool – select an oblique section line See time range of stations

  9. NdEdit • NdEdit is an interactive Java tool • NdEdit is being re-engineered for the Web

  10. SGT: A Scientific Graphics Toolkit • Java toolkit for scientific graphics • On-line documentation, examples, tutorials, streaming video • JavaBeans in next release • Features • Contour, line and vector plots, • Axes user settable or automatically scaled • multiple Time Axis formats • mouse-movable, customizable Labels, line keys, icons • Legend generation automatic • Widely used, freely available • scientific and commercial applications use SGT • 12836 downloads by 4508 unique sites from 66 countries • http://www.epic.noaa.gov/java/sgt/

  11. Applications Java Desktop and Web clients

  12. ncBrowseJava tool for data/metadata browse • NetCDF and full OPeNDAP support • Desktop Java application • Axis mapping, parametric plots, flexible mapping of independent variables to axes • Line, vector and contour plots • Animations, 3D graphics via VisAD • Popular, freely available • 6471 downloads by 2896 unique sites in 57 countries • OPeNDAP (DODS) client, Unidata netCDF client, WOCE data CD, etc. • http://www.epic.noaa.gov/java/ncBrowse/ See: AMS Paper 15.2 – Thursday 4:45pm - Donald Denbo

  13. Java OceanAtlasfor browsing ocean data • Intensive Java desktop browsing of ocean data • Property-property plots with up to 7 x axes, waterfall diagrams, Contour plots/residual contour plots, Map plots with optional "bubble" isosurface plots, Linked browsing of all plot types, Built-in and custom calculations, NdEdit for data location/selection • Reads WOCE, EPIC, OPeNDAP netCDF data, some ARGO formats • Extended for wide range of data types • Profile, time series, drifting buoy, gridded analyses, model outputs • Widely used, freely available • http://www.epic.noaa.gov/epic/software/JavaJOA.htm • http://odf.ucsd.edu/joa/jsindex.html

  14. Climate Data PortalDistributed ocean observations • Major in situ data collections: • TAO El Nino buoy data (realtime/PMEL), Global sea level data (realtime/U of Hi), GTSPP (NODC), PMEL hydrographic data and time series collection, WOCE ADCP (U of Hi), IPRC/APDRC in situ data, US Coastal Ocean Time Series database (NODC) • OPeNDAP: in-situ data server and client • LDAP directory services • NdEdit for data selection/subsetting • Data Servers, Clients (Java and Web) – focus on in situ data • http://www.epic.noaa.gov/cdp/cdpjava.htm

  15. OceanShareNetwork collaboration tool • Collaboration features • Local, remote data file access and Java graphics • Standard collaboration tool features (annotation, whiteboard, etc) • Secure LDAP Document Repository • Proposals, papers in progress, data, images • Access control by document or by folder • Accessible from web and desktop • OPeNDAP compatible soon • http://www.epic.noaa.gov/collab/

  16. EPIC tools for the Web for building customized web access to data Example applications • EPIC Web Browser (general) • TAO (El Nino buoys) • Unaami (Arctic time series) • OSCAR (Satellite ocean currents) • Multibeam data (hydrography) • http://www.epic.noaa.gov EPIC Web Toolkit • Interface design • Backend graphics • Map data selector

  17. Tools and Applications Java desktop and Web • Modular Web and Open Source components • Java interactivity • Low cost development/maintenance • OpenSource, standards-based • Scalable, extensible • OPeNDAP supported or planned • http://www.epic.noaa.gov • http://www.epic.noaa.gov/epic/software/ep_java.htm

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