Analysis of the arctic sea surface temperature observation capability using space borne microwave radiometer data

In this paper, the spatial and temporal coverage of satellite SST in the Arctic region is studied by using the SST data of polar orbit spaceborne microwave radiometer (Windsat, AMSR2, HY-2A RM, GMI) in 2016, and the accuracy of SST data is evaluated by using the measured data of Argo. The results show that, the space borne microwave radiometer SST retrievals coverage rate and effective coverage days in winter are lower than that in summer. When AMSR2, GMI, WindSat and HY-2A RM space borne microwave radiometer SST data are combined used, the SST coverage rate can be between 12%-15% in February, and the number of effective observation days is better than 26 days. The error of the space borne microwave radiometer SST data in the Arctic is larger than that of the global average. The accuracy of AMSR2 data is the best one, the accuracy of WindSat data is close to that of AMSR2. The RMSE of GMI SST is about 2 times larger than AMSR2, and the accuracy of HY-2A RM data is lower than that of any other space borne microwave radiometer.