杭州湾及其邻近海域总悬浮物浓度卫星遥感  

Satellite Remote Sensing of Total Suspended Matter Concentration in Hangzhou Bay and Its Adjacent Waters

作　　者：叶小敏[1,2] 王晓梅 邹斌[1,2] 王福涛 YE Xiaomin;WANG Xiaomei;ZOU Bin;WANG Futao(National Satellite Ocean Application Service,Ministry of Natural Resources,Beijing 100081;Key Laboratory of Space Ocean Remote Sensing and Applications,Ministry of Natural Resources,Beijing 100081;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094)

机构地区：[1]国家卫星海洋应用中心,北京100081 [2]自然资源部空间海洋遥感与应用重点实验室,北京100081 [3]中国科学院空天信息创新研究院,北京100094

出　　处：《空间科学学报》2023年第6期1058-1068,共11页Chinese Journal of Space Science

基　　金：民用航天技术预先研究项目(D040107);国家重点研发计划项目(2022YFC3104900,2022YFC3104903)共同资助。

摘　　要：近海及海湾总悬浮物是重要的水质参数之一,而杭州湾及其邻近海域是典型的海湾与近岸海域,与人类关系密切。卫星遥感广泛应用于海水总悬浮物浓度的探测与分析。利用现场实测数据,建立了中国HY-1C/D卫星水色水温扫描仪(Chinese Ocean Color and Temperature Scanner, COCTS)及其他当前在轨的典型水色遥感器在杭州湾及邻近海域的总悬浮物卫星遥感反演方法模型,模型平均相对误差不高于19%。反演并融合获得了HY-1C/D等多源卫星2015-2022年杭州湾及邻近海域的总悬浮物浓度卫星遥感及其融合数据。融合数据经实测数据对比验证,两者之间线性相关系数为0.72,平均相对偏差为26%。卫星遥感结果表明,2015-2022年间杭州湾及其邻近海域总悬浮物浓度年际变化不大,其线性变化不超过其年平均浓度值的0.5%。研究结果表明利用包括HY-1C/D卫星COCTS等的海洋水色遥感载荷,可有效遥感反演得到杭州湾及其邻近海域的总悬浮物浓度并分析其时空变化特征。The Total Suspended Matter(TSM)in the coastal water area and sea bays is one of the important water quality parameters,and Hangzhou Bay and its adjacent waters are typical gulfs and off-shore waters with close relationships with humans.Satellite remote sensing is widely used for monitoring and analyzing the concentration of total suspended matter in seawater.Satellite remote sensing retrieval models of TSM concentration for Chinese Ocean Color and Temperature Scanner(COCTS)on the HY-1C and HY-1D satellites and other typical ocean color remote sensors currently in orbit in Hangzhou Bay and its adjacent waters were developed using in-situ measured data.The average relative errors of the models are not greater than 19%.TSM concentration in Hangzhou Bay and adjacent waters from 2015 to 2022 was retrieved and merged from multi-source satellite data including HY-1C/D.The merged products in this study have been validated against in-situ measured data with the linear correlation coef-ficient of 0.72 and an average relative error of 26%.The results indicate that the inter-annual variation of the TSM concentration in Hangzhou Bay and its adjacent waters is not significant in the period from January 2015 to December 2022,and its linear variation does not exceed 0.5%of its annual average con-centration value.The results of the study indicate that the TSM concentration and its temporal and spa-tially variation characteristics in Hangzhou Bay and its adjacent waters can be effectively retrieved from space broad ocean color remote sensing payloads including COCTS on the HY-1C/D satellites.

关 键 词：杭州湾 总悬浮物浓度 HY-1C/D卫星 遥感 

分 类 号：P714[天文地球—海洋科学] P731.2[环境科学与工程—环境工程] X87