Snow status (wet/dry) in Antarctica at 4.45 km resolution from the satellite microwave scatterometer ASCAT (2007 -- 2021)

The dataset provides daily binary status (wet/dry) of the snowpack for each pixel at 4.45 km resolution in Antarctica over 14 years. This status is retrieved from radar backscatter measurements acquired by ASCAT, using a threshold of -3dB below the winter average backscatter level. The resolution of individual ASCAT measurements is coarse (tens of km), but is enhanced using the SIR algorithm by exploiting overlaps between all the overpasses over two or three few days. The product is gridded at 4.45 km, but the effective spatial resolution is likely a bit coarser, between this grid resolution and the measurement resolution (tens of km). The effective temporal resolution is a few days even though the product is provided daily.