风云四号B星云顶性质产品反演影响因素研究  

Research on the Factors Influencing the Inversionof Cloud Top Properties of Fengyun 4B

作　　者：张淼 李博 徐娜[1,2] 杨昌军 ZHANG Miao;LI Bo;XU Na;YANG Changjun(Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites,National Satellite Meteorological Center,China Meteorological Administration,Beijing 100081;Innovation Center for Fengyun Meteorological Satellite(FYSIC),Beijing 100081)

机构地区：[1]中国气象局国家卫星气象中心中国遥感卫星辐射测量和定标重点开放实验室,北京100081 [2]许健民气象卫星创新中心,北京100081

出　　处：《四川师范大学学报(自然科学版)》2025年第3期398-405,共8页Journal of Sichuan Normal University(Natural Science)

基　　金：国家自然科学基金联合基金(U2442215);第二次青藏高原综合科学考察研究项目(2019QZKK0105)。

摘　　要：我国新一代静止轨道气象卫星风云四号B星(FY-4B)装载有多通道扫描成像辐射计(AGRI).针对AGRI反演云顶性质(云顶温度、云顶高度、云顶压强)算法中通道亮温、初估值及其不确定性、前向模式的不确定性等影响因素,定量计算了这些因素对云顶性质反演造成的误差,结果表明通道亮温的改变对反演造成的影响最大,初估值及其不确定性的改变对反演造成的影响居中,前向模式不确定性的改变对反演造成的影响最小.本研究可为FY-4B云顶性质算法改进提供重要的参考依据.The new generation geostationary meteorological satellite FY-4B is equipped with multi-channel scanning imaging Radiometer (AGRI). This paper quantitatively calculates the errors caused by the factors of channel brightness temperature, initial estimation and uncertainty, uncertainty of forward mode on the retrieval of cloud top temperature, cloud top height and cloud top pressure. The results show that changes in channel brightness temperature have the greatest impact on inversion, changes in initial estimation and its uncertainty have a moderate impact on inversion, and changes in forward mode uncertainty have the smallest impact on inversion. This study can provide important reference basis for improving the algorithm to calculate the property of the FY-4B cloud top.

关 键 词：FY4 云顶高度 云顶温度 云顶压强 反演误差 

分 类 号：P426.6[天文地球—大气科学及气象学]