UPPER OCEAN RESPONSE TO SUPER TYPHOON SOUDELOR REVEALED BY DIFFERENT SST PRODUCTS

In this study, four daily sea surface temperature (SST) products combined with satellite infrared or microwave sensor derived SST data with different spatial resolution and in situ measurements, are used to investigate the SST response to super typhoon Soudelor in 2015 over the Northwestern Pacific Ocean. Before typhoon Soudelor passes by the studied area, the magnitude and spatial distribution of SST from different products are consistent with each other, and all products show the existence of the cyclonic eddies. However, during the passage of typhoon Soudelor, the four SST products show significant difference in the extent and intensity of typhoon-induced SST cooling, especially in the mesoscale eddy regions. OISST dataset based on the infrared sensor shows the weakest and smallest surface cooling area. Much more intense decrease in SST is found in MW OISST and MW-IROISST datasets, which integrate a variety of microwave-derived SST. With a higher resolution up to 1 km, MURSST may reveal more detailed features in SST variation.