THE TROPICAL RAINFALL MEASURING MISSION (TRMM)

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THEON, JS
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V [航空、航天];
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08 ; 0825 ;
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The Tropical Rainfall Measuring Mission (TRMM) is a cooperative effort between NASDA of Japan and NASA of the USA. TRMM is designed to measure rain rates from space using a combination of high resolution radar, passive microwave radiometer and visible-infrared radiometer measurements from a spacecraft in a rapid precession, 350 km orbit inclined at 35 deg. These measurements, averaged over a 500 km grid for a month, are expected to provide monthly mean rainfall to an accuracy of 10 - 15 percent. TRMM will also make it possible to analyze the diurnal component of the rainfall and to derive the vertical distribution of latent heating. An accurate measure of the oceanic rainfall distribution will provide unprecedented insight into the halocline distribution and the stability of the oceanic surface layers. A status of the program is presented.
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页码:159 / 165
页数:7
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