Arctic daily sea ice concentration from FY-3D MWRI Passive Microwave Data (2019)

The data are provided in the polar stereographic projection at a grid cell size of 12.5 x 12.5 km. The original and atmospherically corrected ASI algorithm (ASI and ASI2, respectively) are used in combination with fixed tie points(FTP) and dynamic tie points(DTP), generating four sets of SIC retrievals, namely ASI-FTP, ASI2-FTP, ASI-DTP and ASI2-DTP.

The geophysical parameters required for the atmospheric correction model are obtained from the ERA5 hourly reanalysis data at the European Centre for Medium-Range Weather Forecasts. The SIC dataset from January to December 2019 are achieved in netCDF format with the date in the file name. Pixel values in netCDF files have specific meanings: ‘0-100’ for the percentage of SIC, ‘NoData’ for land and missing data.