Abstract:Inverse calculation of top-of-atmosphere (TOA) radiation at the pupils of sensors onboard Terra/MODIS, FY-3A/MERSI, COMS/GOCI is carried out by using the method of Shen et al. The data on remote sensing reflectance (Rrs) and suspended particulate matter (SPM) concentration are estimated. They are compared with those derived from Envisat/MERIS. The results show that TOA radiation values obtained from MODIS, MERSI and GOCI sensors have a good linear relationship with that of MERIS. The Rrs values obtained from GOCI and MODIS are consistent with that obtained from MERIS. The Rrs value obtained from MERSI is quite different from that obtained from MERIS, particularly in the near infrared region. The absolute deviations of the SPM inverted by MODIS, MERSI and GOCI from that inverted by MERIS are 36%, 31% and 26% respectively. For the high turbid water around Tangtze Estury, Hangzhou Bay and Jiangsu coast, the SPM values inverted by above three sensors are all close to that inverted by MERIS. For the low turbidity water far from coast, only the data inverted by GOCI perform well.