东亚地区气象参数同步物理反演方法的数值试验:SPRM和ISPRM

从反演理论知道,正演问题是对实际大气辐射率的模拟.一切物理反演皆始于正演,而正演辐射率的逼真度又取决于初估值和遥感通道透射率的精度,从而反演过程紧密地把初估值、正演和透射率联在一起.这个研究除了构建自洽的同步反演模式外,着重将SPRM和只改变验前信息参数的SPRM做综合比较,并称后者为ISPRM.试验结果表明后者明显优于前者.

Numerical Test of the Simultaneous Physical Retrieval Methods for Meteorological Parameter over the East-Asia Continent: SPRM and ISPRM

According to the retrieval theory, the forward problem is the modeling of the real atmos -phere . All physical inverse problems start from forward problem . However, the accuracy of forward radiances depends upon the first guess and precision of channel transmittances. Therefore, the retrieval procedure relates with first guess, as well as forward problem and transmittances closely. In addition to set up a consistent simultaneous retrieval model this study, especially compare the ISPRM with the SPRM which changes only a priori information parameter, and thus call ISPRM . It is shown that the result of ISPRM is much better than the SPRM 's .