Time series available on a discrete global grid (DGG) with a spatial resolution of 25 km (grid spacing 12.5 km) of the Surface Soil Moisture representing the water content in the upper soil layer (< 2 cm) in relative units between totally dry conditions (0%) and total water capacity (100%), retrieved from the radar backscattering coefficients measured by the ASCAT (Advanced scatterometer) instrument on board the MetOp satellites. The temporal sampling rate is irregular (every 1-2 days) and depends on the latitude. Each surface soil moisture estimate has an associated noise value, indicating the uncertainty.
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