Optical closure of parameterized bio-optical relationships  

作　　者：贺双颜 FISCHER Jürgen SCHAALE Michael 贺明霞 

机构地区：[1]Institute for Space Sciences,Freie Universitt Berlin [2]Ocean Remote Sensing Institute,Ocean University of China [3]Ocean College,Zhejiang University

出　　处：《Chinese Journal of Oceanology and Limnology》2014年第2期480-489,共10页中国海洋湖沼学报（英文版）

基　　金：Supported by the State Scholarship Fund of the China Scholarship Council;the National Natural Science Foundation of China(Nos.60638020,41206006,41176021,41276028,41306035);the National Basic Research Program of China(973 Program)(No.2011CB409803,2011CB403503);the State Key Laboratory Program(No.SOED1206)

摘　　要：An optical closure study on bio-optical relationships was carried out using radiative transfer model matrix operator method developed by Freie Universitat Berlin. As a case study, the optical closure of bio-optical relationships empirically parameterized with in situ data for the East China Sea was examined. Remote-sensing reflectance （Rrs） was computed from the inherent optical properties predicted by these biooptical relationships and compared with published in situ data. It was found that the simulated Rrs was overestimated for turbid water. To achieve optical closure, bio-optical relationships for absorption and scattering coefficients for suspended particulate matter were adjusted. Furthermore, the results show that the Fournier and Forand phase functions obtained from the adjusted relationships perform better than the Petzold phase function. Therefore, before bio-optical relationships are used for a local sea area, the optical closure should be examined.An optical closure study on bio-optical relationships was carried out using radiative transfer model matrix operator method developed by Freie Universitt Berlin.As a case study,the optical closure of bio-optical relationships empirically parameterized with in situ data for the East China Sea was examined.Remote-sensing refl ectance(R rs)was computed from the inherent optical properties predicted by these biooptical relationships and compared with published in situ data.It was found that the simulated R rs was overestimated for turbid water.To achieve optical closure,bio-optical relationships for absorption and scattering coeffi cients for suspended particulate matter were adjusted.Furthermore,the results show that the Fournier and Forand phase functions obtained from the adjusted relationships perform better than the Petzold phase function.Therefore,before bio-optical relationships are used for a local sea area,the optical closure should be examined.

关 键 词：optical closure ocean color remote sensing bio-optical relationship 

分 类 号：Q63[生物学—生物物理学]