SWE-Fusion: Multi-Source, Real-Time Snow Water Equivalent Data to support water resource management in the Western US. Spatially distributed snow water equivalent (SWE) estimates have a variety of potential applications in water resources, land-surface hydrology, and ecosystem science. The past decade has seen an explosion in spatial snow-water data availability and an associated expansion of water management utilization of these data. Historical satellite-based observations of fractional snow-covered area now exceed 20+ years (e.g. from Landsat & MODIS). These data sets have enabled evaluations of real-time spatial SWE estimates in the context of the past. This is essential for water management which is often focused on evaluating current conditions as a percentage of long-term historical averages. This webinar presents the spatial characteristics of Western US SWE based on a SWE data fusion system in both a historical and real-time context. SWE-Fusion uses a Generalized Linear Model...