Research on sea surface temperature retrieval by the one-dimensional synthetic aperture microwave radiometer, 1D-SAMR

作     者：Weihua Ai Mengyan Feng Guanyu Chen Wen Lu Weihua Ai;Mengyan Feng;Guanyu Chen;Wen Lu

作者机构：College of Meteorology and OceanographyNational University of Defense TechnologyNanjing 211101China PLA Troop 32033Haikou 570100China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2020年第39卷第5期

页      面：115-122页

核心收录：

学科分类：08[工学] 0816[工学-测绘科学与技术] 

基　　金：The National Natural Science Foundation of China under contract Nos 41475019 41575028 41705007 41605016 and 41505016 

主　　题：sea surface temperature synthetic aperture microwave radiometer retrieval accuracy radiometer calibration accuracy auxiliary parameter errors high spatial resolution 

摘      要：Due to the low spatial resolution of sea surface temperature(T_S)retrieval by real aperture microwave radiometers,in this study,an iterative retrieval method that minimizes the differences between brightness temperature(T_B)measured and modeled was used to retrieve sea surface temperature with a one-dimensional synthetic aperture microwave radiometer,temporarily named 1 *** the configuration of the radiometer,an angular resolution of 0.43°was reached by theoretical *** on sea surface temperature retrieval were carried out with ideal parameters;the results show that the main factors affecting the retrieval accuracy of sea surface temperature are the accuracy of radiometer calibration and the precision of auxiliary geophysical *** the case of no auxiliary parameter errors,the greatest error in retrieved sea surface temperature is obtained at low T_S scene(i.e.,0.7106 K for the incidence angle of 35°under the radiometer calibration accuracy of0.5 K).While errors on auxiliary parameters are assumed to follow a Gaussian distribution,the greatest error on retrieved sea surface temperature was 1.3305 K at an incidence angle of 65°in poorly known sea surface wind speed(W)(the error on W of 1.0 m/s)over high W scene,for the radiometer calibration accuracy of 0.5 K.