Impact of dynamic snow density on GlobSnow snow water equivalent retrieval accuracy

Abstract. Snow water equivalent (SWE) is an important variable in describing global seasonal snow cover. Traditionally, SWE has been measured manually at transects or using observations from weather stations. However, these measurements have a poor spatial coverage, and good alternative to situ use spaceborne passive microwave observations, which can provide coverage daily timescales. The reliability accuracy of estimates made radiometer data be improved by assimilating with station depth as done the GlobSnow retrieval methodology. one possible source uncertainty approach constant density used modelling emission snow. In this paper, three versions spatially temporally varying fields were implemented transect Eurasia Canada automated United States. post-process baseline v.3.0 product. Decadal information, i.e. where for each day year was taken mean calculated corresponding over 10 years, found produce best results. Overall, post-processing dynamic information overestimation small values underestimation large values, though larger than 175 mm still significant.