中文摘要：

FY-3A／MERSI是我国自主研发的第二代极轨气象卫星FY-3A搭载的中分辨率光谱成像仪，其海洋水色产品可为全球海洋生态环境的研究提供基础资料。以美国东北部海域为研究区，利用NASA海洋生物学处理小组（OBPG）海洋生物光学数据库（SeaBASS）的现场观测资料，以及TERRA／MODIS海洋水色产品数据，分别对FY-3A／MERSI海色产品的遥感反射率、色素浓度和有色可溶性有机物（CDOM）443nm吸收系数进行了真实性检验。结果表明：MERSI443—685nm6个通道的遥感反射率总体偏高、精度较低，叶绿素-a浓度与现场实测值和MODIS叶绿素．a浓度相比精度较低，总色素浓度与现场实测值相比精度也很低，而CDOM产品的精度稍好。要提高MERSI海色产品的精度，首先要加强图像大气校正的研究，在此基础上，进一步开展各要素遥感反演算法的研究。

英文摘要：

MERSI is a Medium Resolution Spectral Imager which is carried on the second generation polar-orbiting meteorological satellite （FY-3A） launched by China, and its ocean color products will be useful data for study on global oceanic ecology and environment. Taking the northeastern U.S. coast as a research area, the paper validated the accuracy of remote sensing reflectance in each channel, chlorophyll-a and total pigment concentration and absorption coefficient of colored dissolved organic matter （CDOM） at 443 nm（ Ag443 ） within MERSI products datasets compared by in situ data from SeaBASS and TERRA/MODIS ocean color products datasets. The results show that the remote sensing reflectance in 6 channels from 443 nm to 685 nm is much higher than one in situ and MODIS, and their accuracy is lower. The chlorophyll-a concentration in MERSI products is evidently lower than one in situ and MODIS. The accuracy of the total pigment and Ag443 is good. To improve the accuracy of MERSI ocean color products, the study on atmospheric correction algorithms is most important for MERSI images. Given that, the algorithms of each ocean color element will be further deduced, modified and improved.