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Near Real-Time Ocean Data Management

Near Real-Time Ocean Data Management. An Implementation of Open Source Technologies and OGC Protocols. Charlton Purvis, University of South Carolina, a SEACOOS partner. SEACOOS was initiated in 2002 with ONR funding to develop a coastal ocean information system for FL, GA, SC and NC.

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Near Real-Time Ocean Data Management

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  1. Near Real-Time Ocean Data Management An Implementation of Open Source Technologiesand OGC Protocols Charlton Purvis, University of South Carolina, a SEACOOS partner

  2. SEACOOS was initiated in 2002 with ONR funding to develop a coastal ocean information system for FL, GA, SC and NC. SEACOOS Over-Arching Goal: To significantly increase the quantity and quality of environmental information from the coastal ocean of the SE U.S. and facilitate its use in a wide range of societal, scientific, and educational applications.

  3. Observational platforms contributed by SEACOOS partners

  4. SEACOOS modeling Coordinating modelsimulations forthe entire region

  5. The (tiny) data management big picture

  6. Base environment Linux Apache Perl & PHP Mapping & imaging University of Minnesota’s MapServer ImageMagick AniS & Gifsicle Gnuplot Data storage PostgreSQL PostGIS Filesystem Laundry list of core technologies

  7. Data aggregation & storage • Storage • Relational database (in situ, model output, some RS) • Files (RS imagery) • Technology • Perl • PostgreSQL& PostGIS • Aggregation format flavors • netCDF (in situ and remotely-sensed data)SEACOOS CDL • PNG (RS imagery) PostgreSQL PostGIS

  8. Normalization • Reporting time varies • In-situ data • E.g. daily, hourly, half-hourly, every 10 minutes • Remotely-sensed data • E.g. twice daily • Technology • PostgreSQL & PostGIS

  9. Visualization : interactive mapping • Production sitehttp://www.seacoos.org • Developmentsite • Technology • MapServer • ImageMagick • Perl & PHP

  10. Mouse overs • Point queries • In-situ sea surface temperature and winds • Observation time series

  11. Radar surface currents & modeled depth-avg. currents • Ad-hoc animations

  12. Remotely sensed QuikSCAT & in-situ winds

  13. Remotely sensed Chl-A & true color composite

  14. In-situ sea surface temperature (again) • Sparse perhaps?

  15. In-situ & modeled OI sea surface temperature • Models fill the gaps

  16. In-situ & modeled OI sea surface temperature • Ever-growing domains

  17. Visualization : graphs & animations • Ad-hoc time-series graphs • Ad-hoc animations • Technology : MapServer | ImageMagickGnuplot | Gifsicle |AniS

  18. Dissemination (it is the technology) • OPeNDAP (DODS) data access • OGC-friendly: WMS, WFS • pick a layer, any layer http://nautilus.baruch.sc.edu/seacoos_misc/show_sea_coos_obs_time_ranges.php

  19. Dissemination : example 1 SEACOOS Remotely-Sensed Layers WMS-Enabled for Hurricane Charley (see OpenIOOS web site -- http://twiki.sura.org/bin/view/Main/CharleyUpgrade) * modis_ergb_low (USF) * modis_rgb_low (USF) * modis_rgb_hi_chesapeake_bay (USF) * modis_rgb_hi_florida_bay (USF) * modis_rgb_hi_miss_plume (USF) * modis_rgb_hi_suwannee_river (USF) * modis_rgb_hi_tampa_bay (USF) * oi_sst (USF) * modis_sst (USF) * avhrr_sst (USF) * modis_chl (USF) * quikscat_wind (JPL) * met_wind (UNC) * met_air_pressure_contour (UNC) * tamu_level_III (TAMU Mesonet) • IntegratedOceanObservingSystemhurricanedemo http://www.openioos.org

  20. Dissemination : example 2 • NC OneMapViewer http://gisdata.usgs.net/website/NC_OneMap/viewer.asp

  21. Open source : obstacles & sustenance • Obstacles • Documentation & packaging • Stereotypes in a proprietary world • Sustenance • Communication • Listservs and twikis and bulletin boards • Information sharing protocol standards • OGC

  22. OGC sustenance? Prove it! • Log layer usage • Example layer : MODIS RGB composite • Available viaSEACOOSinteractive mapsand WMS

  23. Layer usage logging • MODIS RGB compositetotal hits = 652 • Interactive maphits = 105 • WMS hits = 547

  24. An open source attitude • SEACOOS data management • Direct result of combined effort from academia, government, and the private sector • Providing a foundation for other ocean observing systems to possibly adapt and build upon • Plenty of miles to go with more room to grow! • Who am I? • Charlton Purvis, University of South Carolina, SEACOOS • cpurvis@sc.edu • Happy to help and share.

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