用GMS-5气象卫星遥测地面太阳总辐射

魏合理; 徐青山; 张天舒

doi:10.11834/jrs.20030606

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用GMS-5气象卫星遥测地面太阳总辐射
Observation of Solar Irradiance at the Surface from GMS-5
2003年第6期页码：465-471
纸质出版：2003
DOI： 10.11834/jrs.20030606
稿件说明：

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[1]魏合理,徐青山,张天舒.用GMS-5气象卫星遥测地面太阳总辐射[J].遥感学报,2003(06):465-471. DOI： 10.11834/jrs.20030606.

WEI He li, XU Qing shan, ZHANG Tian shu. Observation of Solar Irradiance at the Surface from GMS-5[J]. Journal of Remote Sensing, 2003, (6): 465-471. DOI： 10.11834/jrs.20030606.

摘要

由GMS 5静止气象卫星测量的可见光通道的行星反照率

根据地球大气系统的物理模式反演得到了地面的太阳辐射。该模式以平均气候模式和晴天的气溶胶光学厚度计算晴天的大气吸收、分子和气溶胶散射

其它情况下的散射由行星反照率和晴天的地表反照率推算而得。模式中考虑了水汽和气溶胶的变化对地表太阳辐射的影响。卫星反演的地表太阳辐射与地面观测结果的相关系数高达 95 %以上

日平均方差约为1 0 %。

Abstract

Downward solar irradiance at the surface of the Earth is derived from the apparent satellite reflectance measurements from GMS 5 visible channel （0 4-1 1μm） based on a physical model of earth atmosphere system. The absorption and scattering of atmospheric molecule and aerosol on clear day are considered with standard mid latitude summer atmospheric model using the 6S

the scattering for other weather is abtained from the real time satellite albedo and the surface albedo acquired from the satellite measurements under clear sky condition. The effects of variations of aerosol and precipitable water on clear day to the surface solar irradiance are considered. Compared to the real time measurements by surface pyranometer

the correlation coefficient is as high as 95%

the deviation is about 10% of mean daily solar insolation. From the comparison

the accuracy of hourly solar irradiance estimated from GMS 5 in the text is improved.