Abstract

An advanced method for sea ice concentration (SIC) retrieval, based on measurements of the Advanced Microwave Scanning Radiometer 2 (AMSR2), is validated. An advancement relates to tie point choice for the polarization difference in satellite measurements over open water. The approach is based on the results of physical modeling of the sea ice - ocean - atmosphere system and analysis of the AMSR2 measurements in the Arctic region. The validation is done for summer months using MODIS Sea Ice Extent data as a source of ground-truth information. Areas of 100% open water and 100% sea ice are compared for the MODIS Sea Ice Extent and the AMSR2 retrieved SIC. It is found that the AMSR2 algorithm systematically underestimates 100% SIC as compared with the MODIS 100% SIC in summer months.

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