Unmixing low-resolution soil moisture using spectrum downscaling and evapotranspiration

Using AMSR-E soil moisture and MODIS data, the authors developed a new downscaling algorithm for large-scale soil moisture data according to the spectrum downscaling algorithm by improving the model fitting equation and the evapotranspiration mode. The comparison with in situ data from Asia-Australia Monsoon Project of Coordinated Energy and water-cycle Observation Project (CEOP) in Mongolia showed that the downscaled soil moisture data and its changing trends was in good agreement with measured data. Hence the authors confirmed the downscaling method introduced in the paper was of high accuracy and credibility.