基于自定义模型的FY-4A数据气溶胶光学厚度反演  

Retrieval of aerosol optical depth using FY-4A data based on custom model

作　　者：李莉 李长军[3] 赵海军 葛瑞婷 LI Li;LI Changjun;ZHAO Haijun;GE Ruiting(Key Laboratory for Meteorological Disaster Prevention and Mitigation of Shandong,Jinan 250031,China;Linyi Meteorological Bureau,Linyi 276004,China;Shandong Meteorological Information Center,Jinan 250031,China;Zibo Meteorological Bureau,Zibo 255022,China)

机构地区：[1]山东省气象防灾减灾重点实验室,山东济南250031 [2]临沂市气象局,山东临沂276004 [3]山东省气象信息中心,山东济南250031 [4]淄博市气象局,山东淄博255022

出　　处：《海洋气象学报》2022年第4期106-116,共11页Journal of Marine Meteorology

基　　金：国家自然科学基金项目(41901294);山东省气象局科研项目(2020sdqxz09);山东省气象防灾减灾重点实验室项目(2021SDYD29)。

摘　　要：利用第二代静止气象卫星风云四号A星(FY-4A)的多通道扫描成像辐射计(Advanced Geosynchronous Radiation Imager,AGRI)资料,充分考虑其通道设置,以山东为研究区域,构建适用于山东本地的气溶胶模型,研究山东地区气溶胶光学厚度(aerosol optical depth,AOD)反演算法。选取两次典型空气污染案例进行反演,并将反演结果与临近时刻的AOD产品进行对比验证分析。结果表明:反演结果与Himawari-8/AHI(Advanced Himawari Imager)的气溶胶产品在空间分布上总体一致,能体现AOD的变化趋势及分布情况;和临近时刻的MODIS产品相关系数较高,均在0.90左右,最高可达0.94。这说明基于自定义气溶胶模型,利用FY-4A/AGRI数据反演山东地区气溶胶合理可行。Based on the Advanced Geosynchronous Radiation Imager(AGRI)data of the second-generation geostationary meteorological satellite FY-4A and in consideration of its channel settings,an aerosol model suitable for Shandong is constructed to study the retrieval algorithm of aerosol optical depth(AOD)in the research area.Two typical air pollution processes are selected for retrieval,and the results are compared and verified using the AOD products of adjacent time.It is indicated that the retrieval results are generally consistent with the spatial distribution of Himawari-8/AHI(Advanced Himawari Imager)aerosol products and can reflect the change trend and distribution of AOD;the correlation coefficients between the results and MODIS products of adjacent time are relatively high with a value of about 0.90 and a maximum of 0.94.This shows that it is reasonable and feasible to use FY-4A/AGRI data to retrieve aerosols in Shandong based on the custom model.

关 键 词：气溶胶光学厚度 FY-4A/AGRI 自定义 气溶胶模型 

分 类 号：P732[天文地球—海洋科学]