河口及近岸海域水体叶绿素浓度反演方法综述

Research progress of the inversion algorithm of chlorophyll-a concentration in estuaries and coastal waters

由于近岸河口地区水体复杂的光学特性,以往大洋一类水体的叶绿素a反演方法已不再适用。为提高河口及近岸海域水体叶绿素a浓度反演精度,具体从水体组分复杂性和光谱响应差异性两个方面描述河口及近岸水体光学特性的不确定性;分析影响河口及近海水体叶绿素a浓度反演精度的关键因素,总结归纳近十年来水体光谱数据处理方法及河口及近岸海域水体叶绿素a浓度遥感反演方法;最后从反演算法、数据处理和算法体系三个方面,对河口及近岸浑浊水体提高反演叶绿素精度提出几点展望。

Due to the complex optical characteristics of the estuaries and coastal waters,the previous inversion algorithms of chlorophyll a concentration in Case?Ⅰwater are no longer applicable.Therefore,in order to improve the retrieval accuracy of chlorophyll-a concentration,the uncertainty of the optical properties of the estuarine and coastal water body are described.The key factors which affect the retrieval accuracy in estuarine and coastal waters are analyzed from two aspects,including the complexities of water components and the differences of spectral response.Then the spectral data preprocessing methods and remote sensing inversion algorithms of chlorophyll a concentration in estuarine and coastal turbid waters in recent ten years are summarized.Finally,some suggestions are put forward to improve the accuracy of the inversion of chlorophyll a concentration in estuarine and coastal waters from the three aspects of the inversion algorithm,data processing and inversion algorithm system.