Diurnal Variation of Precipitation over the Tropical Oceans Observed by TRMM/TMI Combined with SSM/I

摘要: Abstract The Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) data are used in this study as the first passive microwave information from a precessing orbit to reveal diurnal variations of precipitation over tropical oceans (30°S–30°N). Data three Special Sensor Imagers combined help alleviate aliasing problem caused by slow sampling TRMM satellite. Annual mean rainfall 1998 presented for 10° latitude bands and six regions. variation all exhibits an amplitude about ±14% mean, it peaks near dawn (approximately 0400–0700 LST). By band, is most evident deep Tropics, while ratio relatively constant bands. Other than early morning, there no exceeding error bars analysis. region, coastal areas where ITCZ intersects large continent...