主流的透明度半分析反演算法在渤、黄海的适用性评价  

Validation of Main Semi-analytical Retrieval Algorithms of Transparency in the Bohai and Yellow Sea

作　　者：秦平[1] 肖艳芳[2] 崔廷伟 刘荣杰[2] 牟冰[1] 

机构地区：[1]中国海洋大学信息科学与工程学院,山东青岛266100 [2]国家海洋局第一海洋研究所,山东青岛266061

出　　处：《激光生物学报》2014年第6期516-522,546,共8页Acta Laser Biology Sinica

基　　金：国家自然科学基金项目(41476159);国家"863计划"项目(2013AA122803);国家海洋局第一海洋研究所基本科研业务费专项资金项目(GY0214T03)

摘　　要：利用渤、黄海407组实测透明度（0．1～18．0 m）与遥感反射率光谱数据，评估了3种透明度半分析遥感反演算法在渤、黄海的适用性，包括基于709 nm 波段、基于560 nm 波段和基于固有光学量准分析算法的透明度半分析算法。结果表明：3种半分析算法均不适用于渤、黄海水体，透明度反演值的均方根误差（RMSE）都大于2．2 m，平均相对误差（APD）都高于68％。其中，基于560 nm 波段的半分析算法反演误差相对较小，RMSE为2．2～4．6 m，APD 为68．0～86．7％。Transparency,usually characterized by the Secchi disk depth ZSD ,is a basic parameter of optical properties of ocean water.Main semi-analytical algorithms for transparency estimation are validated based on 407 in-situ data in the Bohai Sea and Yellow Sea （the measured ZSD is in the range of 0.1 ~18.0 m）.The semi-analytical algorithms include those based on remote sensing reflectance at 709 nm,at 560 nm and the quasi-analytical algorithm （QAA）of the inher-ent optical properties.Comparisons between Secchi depth retrievals from semi-analytical algorithms and in-situ measure-ments show that these three algorithms are not applicable to the Bohai Sea and Yellow Sea.The root mean square error （RMSE）is larger than 2.2 m and the average absolute percentage difference （APD）is larger than 68%.The semi-an-alytical algorithm based on remote sensing reflectance at 560 nm shows a better performance with RMSE of 2.2 ~4.6 m and APD of 68.0 ~86.7%,compared to the algorithms based on remote sensing reflectance at 709 nm （RMSE of 10.8~15.9 m and APD of 70.4 ~1 16.3%）and QAA （RMSE of 2.8 ~4.4 m and APD of 73.9 ~1 15.1%）.

关 键 词：透明度 Secchi 深度 半分析算法 评估 渤海 黄海 

分 类 号：P76[天文地球—海洋科学]