渤海湾叶绿素浓度的反演与验证

摘要

叶绿素a浓度是浮游植物现存量的表征.本文基于2012年春季渤海湾叶绿素实测数据,下载了相应的遥感数据,利用MODIS数据的OC3M和OC2方法进行叶绿素浓度a反演,利用GOCI数据的波段比值、OC3G以及YOC算法对叶绿素a浓度进行反演,反演结果与实测结果的空间分布趋势一致.由反演精度分析,GOCI的波段比值法与MODIS的OC3M算法的反演精度相近,GOCI数据的YOC叶绿素浓度算法在渤海湾反演精度比其他反演算法高.%Chlorophyll a concentration is to characterize the amount of phytoplankton.In this paper, the chlorophyll a concentration is retrieved using the OC3M and OC2 algorithms based on the MODIS remote sensing data, and using the band ratio, OC3G and YOC algorithms based on the GOCI remote sensing data. Based on the chlorophyll a measured data in the Bohai Bay in spring, 2012, the spatial distribution trends of retrieval results are consistent with the measured results. By the inversion precision analysis, the accuracy of retrieval results of band ratio method based on GOCI is similar to that of OC3M method based on the MODIS. The precision retrieval results of YOC method based on GOCI are higher than the other methods.