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《Acta Optica Sinica》 2017-08
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Remote Sensing Retrieval and Temporal-Spatial Distribution Characteristics of Particulate Organic Carbon Concentration in Seawater Near Yellow River Estuary

Mu Bing;Cui Tingwei;Qin Ping;Gong Jialong;Xiao Yanfang;Zheng Ronger;College of Information Science and Engineering,Ocean University of China;The First Institute of Oceanography,State Oceanic Administration;The First Institute of Oceanography,State Oceanic Administration,Qingdao;  
Two particulate organic carbon(POC)concentration retrieval models are developed with remote sensing reflectance at 745nm(model 1)and 680nm(model 2)based on the data collected near the Yellow River Estuary.The average percentage differences(APD)of the two models are less than 26%,and model 1 performs better.Accuracy evaluation is carried out with geostationary ocean color imager(GOCI)images and the measured data,and the average relative error is less than 30%.The developed models are used to analyze the temporal and spatial variation of POC concentration in the seawater near the Yellow River Estuary on the time scales of hour,day(for strong wind process)and season,respectively.The results show that the POC concentration is high in winter,and the POC concentration is low in summer.The peak value of POC concentration is found near the Bohai Bay.The variations of POC concentration are of the same order of magnitude under the three conditions,which shows that the obvious change of POC concentration may happen even in shorter time scale,while the seasonal mean effect is significant.
【Fund】: 国家自然科学基金(41606197 41476101 41476159 41506203);; 全球变化与海气相互作用专项任务(GASI-03-03-01-01);; 中韩海洋科学共同研究中心项目(PI-2017-3);; 广东省自然科学基金青年基金(2014A030310287);; 热带海洋国家重点实验室(中国科学院南海海洋研究所)开放课题(LT01509);; 中央级公益性科研院所基本科研业务费专项(PM-zx703-201601-014)
【CateGory Index】: P715.7
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