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Integration of the AMSR-E Ocean Products into the Existing Satellite Climate Record

Integration of the AMSR-E Ocean Products into the Existing Satellite Climate Record. Long Term Stability of AMSR-E Hot Load Correction T A Calibration Over Land: characterize non-linearity Long Term Validation / Stability of Ocean Products.

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Integration of the AMSR-E Ocean Products into the Existing Satellite Climate Record

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  1. Integration of the AMSR-E Ocean Products into the Existing Satellite Climate Record • Long Term Stability of AMSR-E Hot Load Correction • TA Calibration Over Land: characterize non-linearity • Long Term Validation / Stability of Ocean Products Frank Wentz, Chelle Gentemann, Thomas Meissner, Lucrezia Ricciardulli Marty Brewer Remote Sensing Systems, Santa Rosa, CA Joint AMSR Science Team Meeting Telluride, Colorado, July 14-16, 2008

  2. Earth System Data Record (ESDR) Ocean Climate Data Record (OCDR) Key variables in the global energy and water cycle Wind, Vapor, Cloud, Rain: global oceans: 24 years (1987-2010) SST: tropical oceans: 14 years (1997-2010) global oceans: 9 years (2002-2010) (SSM/I, TMI, AMSR, WindSat, SSMIS, …) TB (L2A) maintenance and improvement Good Calibration has many applications (not just for ocean products)

  3. AMSR-E Hot Load, Corrected 7 19 37 89A 11 23 89B Effective Hot Load Temperature (time v. orbit position)

  4. AMSR-E Hot Load, Corrected 7 19 37 89A 11 23 89B Effective Hot Load Temperature Anomaly (- 4 year average)

  5. AMSR-E Hot Load Correction: Long Term Stability • Hot load correction is good, but based on ~3 years data • Does the annual cycle repeat predictably? • Is the hot load really warming with time? • Is the “warming” hot load a spurious artifact? • Re-analyze with more data (6+ years) -> better correction

  6. TA Calibration Over Land Before Katrina 6.9 GHz response is not linear higher channels may be non-linear (to a lesser extent) Teff correction -> precise calibration over the ocean if linear response -> extrapolate to warm scenes (land, ice) Improve TBover land and ice by collocating observations with: SSM/I, TMI, and especially WindSat (very linear response) After Katrina

  7. Stability of Ocean Products Validation is extensive and ongoing Meeting or exceeding requirements / expectations Global Comparison

  8. Long-term Stability of Ocean Products 4 Year SST Trend: AMSR-E v. Reynolds

  9. Long-term Stability: Wind Speed To whom shall we compare? (all of the above)

  10. Validation Using Wind Speed Histograms

  11. Validation Using Wind Speed Histograms SSM/I Version 5 SSM/I Version 6

  12. Integration of the AMSR-E Ocean Products into the Existing Satellite Climate Record • Long Term Stability of AMSR-E Hot Load Correction • TA Calibration Over Land • Long Term Validation / Stability of Ocean Products Frank Wentz, Chelle Gentemann, Thomas Meissner, Lucrezia Ricciardulli Marty Brewer Remote Sensing Systems, Santa Rosa, CA Joint AMSR Science Team Meeting Telluride, Colorado, July 14-16, 2008

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