我国东海海面温度定量遥感反演研究  

A Regional Algorithm to Estimate Sea Surface Temperature in the East China Sea

作　　者：朱利[1,2,3] 顾行发[3] 王桥[1,2] 余涛[3] 李莉[3] 

机构地区：[1]中国环境监测总站,北京100029 [2]国家环保部环境卫星筹备办公室,北京100029 [3]中国科学院遥感应用研究所,北京100101

出　　处：《遥感技术与应用》2008年第5期495-499,I0001,共6页Remote Sensing Technology and Application

基　　金：国家科技支撑项目(2006BAC08B05);国家高技术研究发展计划“863计划”(2006AA12Z113)资助

摘　　要：提出了利用Terra卫星的MODIS的20、29、31和32红外通道数据来反演我国东海海面温度的区域SST反演算法。算法的系数是通过辐射传输模型MODTRAN4,输入TIGR大气廓线库中中国东海附近的大气廓线进行辐射传输模拟获得。通过MODIS的SST产品MOD28数据以及实测海面浮标数据进行算法精度验证,验证结果显示,该算法获得的SST分布与MOD28产品相吻合;用21个实测浮标数据为真值,算法精度为0.98 K,RMSE为1 K,而MOD28的精度为1.29 K,RMSE为1.26 K,该算法精度优于MODIS的SST产品精度;卫星观测角度在40°以内精度为0.68 K,大于40°精度降低到1.16 K,对于大观测角度的SST反演,算法还有待改进。This paper proposes a regional algorithm to estimate sea surface temperature （SST） in the East China Sea has been developed using MODIS data aboard Terra and the coefficients of the algorithm were ascertained using MODTRAN 4.0 code and TIGR profiles. The East China Sea＇s 24 profiles were chosen from TIGR database to input the MOTRAN4 code to calculate the at-sensor apparent brightness temperatures in MODIS band 20,29,31 and 32 under 21 observation angles （from 0 to 65 degree） and the coefficients were obtained from the 3,528 samples using the least square method. The preliminary results show a good agreement between SSTs estimated by the proposed algorithm for Terra MODIS data and MODIS SST products. The comparison of the SSTs estimated by the proposed algorithm with concurrent in situ data showed an accuracy of about 1K. With observation angles increase the accuracy deduced from 0.68K to 1.16K. The accuracy of the proposed algorithm was better than that used in MOD28. Our future work would be conducted to collect more profiles and in situ data and improve the accuracy of our algorithm in large observation angles.

关 键 词：SST 东海 Terra/MODIS MODTRAN SST反演算法 验证 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]