Atmospheric correction of ocean color imagery over turbid coastal waters using active and passive remote sensing

• Published in: Chinese journal of oceanology and limnology Vol. 27; no. 1; pp. 124 - 128
• Main Author: 田礼乔 陈晓玲 张亭禄 龚威 陈莉琼 陆建忠 赵羲 张伟 于之锋
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science Press 01.02.2009; Springer Nature B.V; State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China; The Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China%Laboratory of Ocean Remote Sensing, Ministry of Education, Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266100, China%State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China; The Key Lab. Of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang 330031, China%State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
• Subjects: Aeronautics; Aerosols; Atmospheric correction; Brackish; CALIPSO (Pathfinder satellite); Coastal waters; Color; Color imagery; Earth and Environmental Science; Earth Sciences; Estuaries; Estuarine dynamics; Image processing; Imagery; Lidar; Marine; MODIS; MODIS数据; Ocean color; Ocean colour; Oceanography; Optical properties; Radiance; Remote sensing; Spectroradiometers; Water; 中分辨率成像光谱仪; 大气校正; 彩色图像; 沿海水域; 海洋水色; 美国国家航空航天局; 被动遥感; China, People's Rep., Zhu R; China, People's Rep; CALIOP; turbid coastal waters; atmospheric correction; MODIS; Ocean color remote sensing
• ISSN: 0254-4059; 2096-5508; 1993-5005; 2523-3521
• DOI: 10.1007/s00343-009-0124-x

This paper demonstrates an atmospheric correction method to process MODIS/Aqua （Moderate-resolution Imaging Spectroradiometer） ocean color imagery over turbid coastal waters with the aid of concurrent CALIOP （Cloud-Aerosol LIdar with Orthogonal Polarization） aerosol data, assuming that there exists ＂nonturbid＂ water in the study area where MODIS aerosol optical properties can be retrieved accurately. Aerosol properties from CALIOP measurements were obtained and related to those from MODIS. This relationship, combined with CALIOP aerosol data, was extended to turbid water to derive MODIS aerosol properties, where atmospheric correction using MODIS data alone often fails. By combining MODIS and CALIOP data, aerosol signals were separated from the total signals at the satellite level, and water-leaving radiances in turbid waters were subsequently derived. This method was tested on several MODIS/Aqua ocean color images over South China turbid waters. Comparison with field data shows that this method was effective in reducing the errors in the retrieved water-leaving radiance values to some extent. In the Zhujiang （Pearl） River Estuary, this method did not overestimate the aerosol effects as severely, and provided far fewer negative water-leaving radiance values than the NASA （National Aeronautics and Space Administration） default methods that used MODIS data alone.