A STUDY ON THE RELATIONSHIP BETWEEN GMS-5 INFRARED DATA AND PRECIPITATION SOUNDED BY TRMM/PR  

作　　者：李正龙 金鑫 李万彪 朱元竞 

机构地区：[1]Department of Atmospheric Sciences.School of Physics.Peking University,Beijing 100871

出　　处：《Acta meteorologica Sinica》2002年第3期317-326,401,共11页

基　　金：National Natural Science Foundation of China(No.49794030 & 40105001).

摘　　要：To study the possibility of improving the precision of retrieving precipitation through GMS-5 infrared data,the relationship between the data of GMS-5 infrared channel 1(IR1)and precipitation sounded by TRMM/PR was carefully studied through some cases gathered during the HUBEX 1998.First of all,the relationship between the brightness temperature(Tb)and PR- sounded near-surface rainfall rate(NSRR)was studied.Then,as PR can sound the inner structure of rainfall area.a unique advantage of this new instrument,the relationship between Tb and PR-sounded rainfall rate in each layer was also studied.Still,as PR can tell the rain type, those relationships were studied again according to the different types of precipitation(i.e. convective and stratiform).After comparing these outcomes with those from other references,it can be concluded that the relationship between Tb and PR-sounded rainfall rate is acceptable and it is possible to calibrate precipitation retrieved through Tb by PR data.To study the possibility of improving the precision of retrieving precipitation through GMS-5 infrared data,the relationship between the data of GMS-5 infrared channel 1(IR1)and precipitation sounded by TRMM/PR was carefully studied through some cases gathered during the HUBEX 1998.First of all,the relationship between the brightness temperature(Tb)and PR- sounded near-surface rainfall rate(NSRR)was studied.Then,as PR can sound the inner structure of rainfall area.a unique advantage of this new instrument,the relationship between Tb and PR-sounded rainfall rate in each layer was also studied.Still,as PR can tell the rain type, those relationships were studied again according to the different types of precipitation(i.e. convective and stratiform).After comparing these outcomes with those from other references,it can be concluded that the relationship between Tb and PR-sounded rainfall rate is acceptable and it is possible to calibrate precipitation retrieved through Tb by PR data.

关 键 词：GMS(Geostationary Meteorological Satellite) PR(Precipitation Radar) PRECIPITATION 

分 类 号：P426.6[天文地球—大气科学及气象学]