Retrieval of Sea Surface Temperature From HY-1B COCTS

The Chinese Ocean Color and Temperature Scanner (COCTS) on board HY-1 series satellites has two thermal infrared channels with the spectrum range of 10.30-11.40 μm 11.40-12.50 for sea surface temperature (SST) observations. To reprocess Haiyang-1B (HY-1B) COCTS SST, Bayesian cloud detection optimal estimation (OE) SST retrieval were applied to data in this study. algorithm that been developed is based Bayes’ theorem uses simulation MODerate resolution atmospheric TRANsmission (MODTRAN) model was used brightness temperatures. SSTs retrieved from by OE 2009 2011 northwest Pacific. Comparison situ showed are cooler than buoy measurements –0.23 °C average, standard deviation (SD) differences 0.51 °C. A large component mean difference attributable cool skin effect at ocean (typically –0.15 –0.2 °C), remainder being calibration biases. matched temperatures Advanced Along Track Scanning Radiometer (AATSR) closer zero, –0.09 °C, a SD 0.49 These validation results demonstrate work well improving accuracy, show potential these methods help develop products operational satellites, HY-1C HY-1D.