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MODIS Ocean Processing and Data Distribution

MODIS Ocean Processing and Data Distribution. Jasmine S. Nahorniak Mark R. Abbott Curt Vandetta. updated Feb 22 2007. College of Oceanic and Atmospheric Sciences. OREGON STATE UNIVERSITY. Our goal : To collect, process, and distribute MODIS oceans data off Oregon

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MODIS Ocean Processing and Data Distribution

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  1. MODIS Ocean Processing and Data Distribution Jasmine S. Nahorniak Mark R. Abbott Curt Vandetta updated Feb 22 2007 College of Oceanic and Atmospheric Sciences OREGON STATE UNIVERSITY

  2. Our goal: To collect, process, and distribute MODIS oceans data off Oregon in near real-time.

  3. Current status • MODIS passes automatically collected day and night • data processed to level 2 • oceans within 1 hour of pass • data processed to level 3 oceans (daily, 1 km resolution) • daily • data available online, via ftp, and by subscription

  4. Our starting point: • satellite dish from Apogee Solutions, Ltd. • pass collection software • Ground Station Commander • tracker/ingest/jpl • ERSDEM2 demodulator photo by Tom Leach How do we get to level 3 oceans data from here?

  5. SUN Simulcastserver passcollection main scripts, raw to level 3 ERSDEM2 demodulator GSC & browser Linux Linux Linux Linux PC PC 1 Ancillarydata outsideusers 2 12:00 3 13:00 camera data base web server ftp server Key: Linux PC SUN

  6. Ancillary data • Pass collection: • iirv files (eph*) • tle files • Level 0 to 3 processing: • leap seconds file (leapsec.dat) • earth motion file (utcpole.dat) • attitude and ephemeris (*ATT*, *EPH*) • Oceans processing: • ozone data (S*.OZONE) • meteorological data (S*.MET) • Reynolds’ weekly SST (oi.mean.bias.*) 1 ancillarydata

  7. passcollection ERSDEM2 demodulator GSC & browser Linux Linux PC Pass collection process 2 12:00 camera

  8. Pass collection issues • regular data dropouts due to Goldstone downlinks

  9. main scripts,raw tolevel 3 Linux Raw data to level 3 processing

  10. Level 3 oceans data nLw(443) chlorophyll SST

  11. Processing issues • oceans code is frequently updated (but simple to update) • oceans ancillary data availability slows processing • data are processed twice

  12. SUN Simulcastserver Linux PC Output for the community outsideusers 3 13:00 data base web server ftp server

  13. Data requests received • level 1b data for fire research • chlorophyll data during cruises • specific regions on a regular basis • events • earthquake • oil spill • fire

  14. Summary • direct broadcast system functioning well • level 1b and 2 oceans data are available within 1 hour of the pass • data and images are available to users online, via ftp, via subscription and through the Simulcast client.

  15. Acknowledgments Special thanks to: Torben Nielsen (University of Hawaii) Scott Gennari (University of Hawaii) Dan Watanabe (University of Hawaii) Sue Walsh (RSMAS) Jim Brown (RSMAS) Bob Evans (RSMAS) Patrick Coronado (GSFC, NASA) Kelvin Brentzel (GSFC, NASA) Chris Lynnes (GSFC, NASA)Jim Dodge (NASA) Peter Baylis (Dundee Satellite Systems Ltd.) John Brush (University of Dundee) Jim Croal (Farmor Engineering Ltd.)Gene Feldman (NASA) Angie Kelley (NASA)Bryan Franz (NASA) Mike MacDonald (NASA) and many others. Funding provided by NASA HQ.

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