Retrieval of Atmospheric Precipitable Water with GMS-5 Infrared Measurements

Abstract

Abstract: The split window statistical method for retrieval of atmospheric precipitable water is developed by GMS-5 infrared brightness temperatures measurements. The preliminary test shows that the RMS error of the method is 0.37g.cm^-2. The precision is superior to that of GOES split window retrieval method. And it not only comes up to but also is superior to that of AVHRR split window estimations. The comparison of the monthly mean precipitable water distribution shows that the retrieval U field is in good agreement with that of the conventional radiosonde observation.

Key words: geostationary meteorological satellite (GMS-5), precipitable water(U), infrared brightness temperature, split window statistical method

摘要： 建立了用GMS-5红外亮温资料反演大气可降水量的分裂窗统计法。初步试验结果表明，分裂窗统计法反演的RMS误差为0.37g·cm^-2。优于用GOES的分裂窗资料反演可降水量的精度，达到或超过用AVHRR分裂窗资料反演可降水量的精度。对月平均水汽分布的比较显示，反演可降水量分布与实际探空资料获得的分布是一致的。

关键词: GMS-5, 可降水量(U), 红外亮温, 分裂窗统计法

CLC Number:

P407

LI Wanbiao,LIU Yinghui,ZHU Yuanjing,ZHAO Bolin. Retrieval of Atmospheric Precipitable Water with GMS-5 Infrared Measurements[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

李万彪, 刘盈辉, 朱元竞, 赵柏林. GMS-5红外资料反演大气可降水量[J]. 北京大学学报（自然科学版）.

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Retrieval of Atmospheric Precipitable Water with GMS-5 Infrared Measurements

GMS-5红外资料反演大气可降水量

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