VALIDATION ON OCEAN COLOR PRODUCTS OF FY-3A/MERSI
GONG Shao-qi
ZHANG Yong
SUN Ling
SUN De-yong
WU Peng-fei
Abstract：MERSI is a Medium Resolution Spectral Imager which is carried on the second generation polar-orbit-ing 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 con-centration 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.
Keywords：satellite oceanographyFY-3A /MERSIocean color productsvalidationatmospheric correctionalgorithm
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 725-733 )