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Collection 005 Updates: Scientific Data Set Changes and Algorithm Improvements

Stay informed with the latest updates and improvements in Collection 005, including changes to Scientific Data Sets, enhancements in Aerosol algorithms, Cloud properties statistics, and software patches. Discover the new QA Plan for Collection 005 and upcoming developments in MODIS-Atmosphere Web Site. For more information, contact hubanks@climate.gsfc.nasa.gov.

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Collection 005 Updates: Scientific Data Set Changes and Algorithm Improvements

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  1. Level-3 Collection 005 Updates & New Web Site Content Paul A. Hubanks Science Systems and Applications, Inc.

  2. Topic 1. L3 Updates for Collection 005

  3. a. Scientific Data Set (SDS) Changes

  4. Daily Global (08_D3) statistics • derived from • Aerosol (04_L2) • Combined Land & Ocean • Land only Collection 005Updates L2 Aerosol algorithm improvements: - reduced snow contamination in land retrievals at the snow/ice edge

  5. Daily Global (08_D3) statistics • derived from • Aerosol (04_L2) • Ocean only Collection 005Updates

  6. Daily Global (08_D3) statistics • derived from • Water Vapor (05_L2) • & • Cloud (06_L2) • Cirrus detection • Cloud Top properties Collection 005Updates

  7. Daily Global (08_D3) statistics • derived from • Cloud (06_L2) • Cloud Optical Properties • (primary retrieval) Collection 005Updates

  8. Daily Global (08_D3) statistics • derived from • Cloud (06_L2) • Cloud Optical Properties • (supplementary parameters) Collection 005Updates

  9. Daily Global (08_D3) statistics • derived from • Atm. Profile (07_L2) Collection 005Updates

  10. b. An Example Software Patch: L3 sub-sampling and dead detector issue

  11. L3 Sub-sampling

  12. Using the old L3 Logic, when sub-sampling … dead Aqua detectors for 1 km aggregated Band 6 Detector 1 2 3 4 5 6 7 8 9 10 « Dead detector « Dead detector caused all-fill L3 parameters(that used band 6 as input) Code patch now allows a PCF specified start line for sub sampling – changed from “3” to “4” for C005. (note that start pixel remains at “3” and stride remains at “5”)

  13. c. A Software Patch Under Development: Screen L2 Cloud Optical Thickness “partial retrievals” from L3 (est. completion: end of January 2006)

  14. Topic 2. Recent high-profile additions to the MODIS-Atmosphere Web Site modis-atmos.gsfc.nasa.gov

  15. a. C005 Change Summary Documents

  16. b. New “Greatly Enhanced” QA Plan for Collection 005

  17. New QA Plan:Helps to unravel the QA mystery

  18. New QA Plan: Identifies some previously unknown problems

  19. New QA Plan:Clarifies the metadata fields

  20. Questions? hubanks@climate.gsfc.nasa.gov

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