Retrieval of Fraction of Absorbed Photosynthetically Active Radiation (FPAR) Based on FengYun-3C /MERSI Data

FPAR is one of the key climate parameters for the Global Climate Observing System (GCOS) and the Global Terrestrial Observing System (GTOS). An accurate assessment to FPAR is particularly important to understand the global climate change. In this paper, the FY-3C Medium Resolution Imaging Spectrometer (MERIS) data combined with the improved PROSAIL model and look-up table algorithm to retrieve the FPAR at the Hulunber Grassland. The cross-validation results show that FPAR retrieved from FY-3C data has good consistency with the FPAR products of MODIS, GEOV1 and GLASS, with 0.6654, 0.6893 and 0.6192 at overall Pearson’s correlation coefficients (R), respectively. This study provides the potential for the generating the large-area and long-term sequence FPAR products from FengYun-3C (FY-3C) data.