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AQUA AMSR-E Sea Surface Temperatures C.L. Gentemann, F.J. Wentz, & T. Meissner

AQUA AMSR-E Sea Surface Temperatures C.L. Gentemann, F.J. Wentz, & T. Meissner Remote Sensing Systems www.remss.com AGU Fall meeting December 2011, SanFran. Aqua AMSR-E SSTs.

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AQUA AMSR-E Sea Surface Temperatures C.L. Gentemann, F.J. Wentz, & T. Meissner

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  1. AQUA AMSR-E Sea Surface Temperatures C.L. Gentemann, F.J. Wentz, & T. Meissner Remote Sensing Systems www.remss.com AGU Fall meeting December 2011, SanFran

  2. Aqua AMSR-E SSTs • Sea Surface Temperature (SST) is vital to coastal and marine spatial planning, global weather prediction, climate change studies, search and rescue, and ecosystem based management. • SST is derived from measurements taken by numerous satellites carrying infrared and microwave radiometers, and measured from moored buoys, drifting buoys, and ships • AQUA AMSR-E was the first well-calibrated global microwave PMW with the necessary channels to determine SST

  3. PMW satellites • TRMM TMI (1998 – present) • No 7 GHz • <40 deg latitude • AQUA AMSR-E (6/2002 – 10/2011) • 7 & 10 GHz (plus others) • Global • WindSAT (2/2003 – present) • 7 & 10 GHz (plus others) • Global • Difficult new instrument, so data just becoming available

  4. A new age of coverage AMSR-E MODIS

  5. Climate Stability • Water Vapor is a greenhouse gas – IR SST are susceptible to biases due to water vapor • Volcanic aerosols, Saharan Dust, & Asian Dust events result in cool biases (minimized in more advanced instruments)

  6. Physical Algorithm

  7. AMSR-E data Sea Ice Wind Speed Precipitation Cloud SST Water Vapor

  8. AMSR-E Stats

  9. Conclusions • AMSR-E data accurate • Coverage better than IR • Lower spatial resolution than IR (25 km) • Global data from 2002 - present • Data at www.remss.com • Future instruments • GCOM-W AMSR2 (Feb 2011) • NASA GPM GMI (no 7 GHz, <60 lat, 2014)

  10. BACKUP SLIDES

  11. Formal Induced Input Errors • Use RTM to determine errors for each retrieval Errors for input variables (Tbs, SST_OI, Wind Direction) Sensitivity Analysis Formal Input-Induced Error (FIIE) Additional Information about errors (algorithm errors, influence of rain, etc Error Merging Modified Input-Induced Error (MIIE)

  12. 7GHz vs 11 GHz SST

  13. AMSR-E SST • Adaptive algorithms to reduce RFI, land • Current PMW • TRMM TMI (no 7 GHz, <40 lat) • WindSAT (EXCELLENT!) • National Satellite Oceanic Application Service, SOA, China HaiYang (10/2011) • Future instruments • GCOM-W AMSR2 (Feb 2011) • NASA GPM GMI (no 7 GHz, <60 lat, 2014)

  14. Validation of AMSRE SSTs FIIE (Formal Errors) AMSRE V7 - Buoys

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