中国区域MODIS与VIIRS气溶胶遥感产品的性能评估及其时空演变分析  

Evaluation and analysis of MODIS and VIIRS satellite aerosol optical depth products over China

作　　者：周志高 何利杰 钟洋[3] 王伦澈 覃文敏 张翔[4] ZHOU Zhi-gao;HE Li-jie;ZHONG Yang;WANG Lun-che;QIN Wen-min;ZHANG Xiang(Collaborative Innovative Center for Emission Trading System Co-constructed by the Province and Ministry,Hubei University of Economics,Wuhan 430205,China;College of Public Administration,Huazhong Agricultural University,Wuhan 430070,China;School of Geographical Sciences,Hunan Normal University,Changsha 410081,China;School of Geography and Information Engineering,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]湖北经济学院,碳排放权交易省部共建协同创新中心,湖北武汉430205 [2]华中农业大学公共管理学院,湖北武汉430070 [3]湖南师范大学地理科学学院,长沙410081 [4]中国地质大学地理与信息工程学院,湖北武汉430074

出　　处：《中国环境科学》2024年第8期4211-4229,共19页China Environmental Science

基　　金：国家自然科学基金项目(42201031);湖北省自然科学基金项目(2022CFB754;2023AFB006)。

摘　　要：基于气溶胶地基观测网络数据(AERONET),对MODIS与VIIRS的六种气溶胶光学厚度(AOD)产品在反演精度、空间覆盖范围、空间分布特征、时间反演频率以及对个例的极端天气事件的反演性能等方面进行评估,并从土地利用类型、气溶胶模态、季节变化等角度分析其误差来源.结果表明:从与AERONET地基观测对比来看,MODIS AOD产品反演精度优于VIIRS AOD反演产品,其中以MAIAC AOD产品精度最高,其相关系数R值为0.83,落入期望误差(EE)内的比例达65.03%;从空间覆盖范围以及时间反演频率来看,VIIRS AOD产品显著优于MODIS;从对个例的极端天气事件反演性能来看,MODIS AOD产品对沙尘事件的反演性能优于VIIRS,但所有产品对森林火灾的反演性能还需进一步提升;土地利用类型、气溶胶模态和季节变化对AOD产品反演精度有着显著的影响:六种AOD产品在建设用地的反演精度较高,在农用地的反演精度则较低;六种AOD产品对粗模态气溶胶以低估为主,而对细模态气溶胶则以高估为主;六种AOD产品在秋冬季节反演精度最高,夏季最低.This study evaluates six aerosol optical depth(AOD)products from MODIS and VIIRS in terms of retrieval accuracy,spatial coverage,spatial distribution,retrieval frequency,and their performance in retrieving extreme weather events based on the Aerosol Ground-based Observation Network Data(AERONET).It also analyzes the error sources from the perspectives of land use type,aerosol mode,and seasonal variation.The results indicate that MODIS AOD products outperform VIIRS AOD products.Among them,the MAIAC AOD product has the highest accuracy,with a correlation coefficient R value of 0.83 and a proportion of 65.03%falling within the expected error(EE);In terms of spatial coverage and retrieval frequency,VIIRS AOD products significantly surpass MODIS;From respect of retrieving extreme weather events for individual cases,MODIS AOD products demonstrate better performance in dust events,but all products require further improvement in retrieving forest fire events;The land use type,aerosol mode,and seasonal variation have a significant impact on the retrieval accuracy of the six AOD products.Specifically,the six AOD products show the following characteristics.They show higher accuracy in built-up land but lower accuracy in cropland,and they mainly underestimate coarse mode aerosols while overestimating fine mode aerosols.They achieve the highest retrieval accuracy in autumn and winter,while the lowest in summer.The expected research results can provide scientific guidance for the rational use of MODIS and VIIRS AOD products and the improvement of their retrieval algorithms.

关 键 词：气溶胶光学厚度 MODIS VIIRS AERONET 中国 

分 类 号：X87[环境科学与工程—环境工程]