1. NOAA Environmental Technology Laboratory Gary A. Wick Observed Differences Between Infrared and Microwave Products Detailed comparisons between infrared and microwave SST products show complex spatial and temporal differences.

2. NOAA Environmental Technology Laboratory Gary A. Wick Data Sources Infrared –AVHRR Operational NLSST - Naval Oceanographic Office Microwave –TRMM Microwave Imager (TMI) Remote Sensing Systems – Wentz and Gentemann Buoys –QC’d GTS buoys via NCEP/CDC

3. NOAA Environmental Technology Laboratory Gary A. Wick Potential Microwave Error Contributions 3-D look-up table considering wind speed, SST, and water vapor

4. NOAA Environmental Technology Laboratory Gary A. Wick Estimated Microwave Bias

5. NOAA Environmental Technology Laboratory Gary A. Wick Stability Impact

6. NOAA Environmental Technology Laboratory Gary A. Wick Potential Infrared Error Contributions 2-D look-up table considering water vapor and SST

7. NOAA Environmental Technology Laboratory Gary A. Wick Estimated Infrared Bias

8. NOAA Environmental Technology Laboratory Gary A. Wick Infrared Aerosol Error Contributions Derived from matches with TMI

9. NOAA Environmental Technology Laboratory Gary A. Wick Impact of Bias Corrections Bias: 0.21 K STD: 0.44 K Bias: -0.02 K STD: 0.27 K

10. NOAA Environmental Technology Laboratory Gary A. Wick Impact on OI Analysis August 2000 No Corrections –bias: 0.08 K –rms: 0.61 K With Corrections –bias: -0.01 –rms: 0.59

11. NOAA Environmental Technology Laboratory Gary A. Wick New Humidity and Temperature Products Produced new near-surface specific humidity and air temperature products Combination of SSM/I and AMSU Retrieval derived through regression to cruise observations

12. NOAA Environmental Technology Laboratory Gary A. Wick What Factors Explain the Differences Simple linear correlation analysis Quantities readily in MW products + T a /q a Leading terms q s -q a and T s -T a Applies to both TMI and MCSST Highly sensitive to choice of surface temperature

13. NOAA Environmental Technology Laboratory Gary A. Wick TMI Results

14. NOAA Environmental Technology Laboratory Gary A. Wick MCSST Results

15. NOAA Environmental Technology Laboratory Gary A. Wick Additional MCSST Impact

16. NOAA Environmental Technology Laboratory Gary A. Wick