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Abstract
Snow depth (SD) is one of the important parameters in the hydrologic cycle, contributing to water storage and runoff. This research compared volunteer, in situ SD observations from the National Weather Service cooperative (COOP) network with satellite-derived (Advanced Microwave Scanning Radiometer EOS, AMSR-E) SD values and then proposed a simple interpolation based synthesis incorporating AMSR-E SD, Interactive Multisensor Snow and Ice Mapping System (IMS) snow cover extent (SCE) and COOP SD observations. Daily AMSR-E SD means are found to have a good agreement with daily COOP SD means over time. However, a large difference in the spatial distribution is noted between the data sources. The Difference Correction approach improves the stand-alone AMSR-E SD values with lower mean absolute error and root mean square error, and a higher correlation coefficient (r), by using completely regularized spline interpolation.