Historical simulated snowpack and other hydrometeorology data at 90 m for the Crown of the Continent and vicinity, United States and Canada, water years 1981-2020

This data release contains historical SnowModel (Liston and Elder, 2006) output for the Crown of the Continent and surrounding areas in Montana and Idaho, USA; and Alberta and British Columbia, Canada from September 1, 1981 through August 31, 2020. Fifteen daily variables were simulated or derived for this release: (1) snow water equivalent (swed), (2) liquid precipitation (rpre), (3) solid precipitation (spre), (4) albedo (albd), (5) glacial ice melt (glmt), (6) total precipitation (prec), (7) runoff (roff), (8) snow covered area (sca), (9) snow density (sden), (10) snowmelt (smlt), (11) snow depth (snod), (12) snow sublimation (ssub), (13) air temperature (tair), (14) wind speed (wspd), and (15) wind direction (wdir). Daily variables were also summarized to monthly means or sums, and daily swed was also summarized to annual peak swed. Monthly summaries were further summarized to U.S. Geological Survey 12-digit Hydrologic Units. The simulation used to produce these outputs was conducted on a 90 m geospatial grid and was forced using meteorology from a recently completed (2023) 4 kilometer reanalysis product using the Weather Research and Forecasting (WRF) model covering the conterminous United States (CONUS404, Rasmussen and others, 2023a; 2023b). Land cover information for the simulation was provided by the 2016 National Land Cover Database (Jin and others, 2019) and 90 m elevation information was provided by the National Elevation Dataset (Gesch and others, 2018).