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Centi- and millimeter-wave atmospheric transmittance estimation and analysis over China

机译：中国的毫米波和毫米波大气透射率估算和分析

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Three years radiosoundings measurement at China were inputted in the Salonen-Uppala cloud detection algorithm to distinguish cloud layers, and to estimate cloud liquid water content therein, then atmospheric transmittances of China at frequencies of the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) were estimated using MPM and Mie theory. The validation expressed a good agreement with the field experimental observations. A comprehensive temporal and spatial analysis has been executed, appeared that microwave atmospheric transmittances were much dependence on water vapor distribution, and transmittances were relatively stable from October to March, but fluctuated obviously in summer. Transmittances of northwest China were higher than those of south China, and the highest transmittances were in Qinghai-Tibet Plateau region. The correlation coefficient between microwave atmospheric transmittance and MODIS total column precipitable water vapor (MYD05) in January at 18.7, 23.7, 36.5 and 89 GHz was 0.904, 0.923, 0.847 and 0.879 respectively. The relationship between monthly averaged microwave atmospheric transmittances and MYD05 could be used to estimate the high resolution microwave atmospheric transmittances products. The results prepared to ensure atmospheric effect in the applications of passive microwave remote sensing.
机译：在Salonen-Uppala云探测算法中，将在中国进行了三年的无线电探测测量，以区分云层，并估算其中的液态云水含量，然后以先进微波扫描辐射计-地球观测系统（AMSR-）的频率对中国的大气透过率进行测量。 E）是使用MPM和Mie理论估算的。验证与现场实验观察结果很好地吻合。进行了全面的时空分析，结果表明微波大气透过率在很大程度上取决于水蒸气的分布，并且十月至三月的透过率相对稳定，而夏季则明显波动。西北地区的透光率高于华南地区，而透光率最高的地区是青藏高原地区。一月份在18.7、23.7、36.5和89 GHz的微波大气透过率与MODIS总柱可沉淀水蒸气（MYD05）之间的相关系数分别为0.904、0.923、0.847和0.879。月平均微波大气透射率与MYD05之间的关系可以用来估算高分辨率微波大气透射率乘积。研究结果为确保在被动微波遥感应用中的大气效应做好了准备。

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