抄録
An algorithm of retrieving SST from TRMM Microwave Imager (TMI) aboard Tropical Rainfall Measuring Mission (TRMM) launched in November 1997 is developed. Root square mean of difference between monthly TMI SST and SST of the Japan Meteorological Agency is within 0.7∼0.8°C in the global ocean. TMI SST in the equatorial Pacific Ocean clearly shows a time sequential change of SST from El Nino in early 1998 to La Nina like in middle 1998. Although there remain several problems to be solved to improve an accuracy of TMI SST, such as calibration, effect of strong wind, sun glitter, et al., TMI SST will give new information about SST, from studies of comparing with infrared SST and studies of SST of quickly change.