Daymet V4 Snow Water Equivalent (SWE) Monthly Averages for North America, Hawaii, and Puerto Rico

Description:This dataset provides combined 1 km monthly mean Snow Water Equivalent (SWE) surfaces for North America, Hawaii, and Puerto Rico for the year 2023. The data were derived from the Daymet Version 4 monthly average SWE product, which estimates daily surface variables at 1 km spatial resolution across North America using ground station observations and topographically informed interpolation. The three regional rasters (daymet_v4_swe_monavg_na_2023.tif, daymet_v4_swe_monavg_hi_2023.tif, daymet_v4_swe_monavg_pr_2023.tif) were mosaicked into a single continuous Lambert Conformal Conic grid covering the full North American continent and outlying territories. Each layer corresponds to the mean SWE for one calendar month (January–December 2023), expressed in kilograms per square meter (kg m⁻²), equivalent to millimeters of water equivalent. All files retain the native Daymet projection:+proj=lcc +lat_1=25 +lat_2=60 +lat_0=42.5 +lon_0=-100 +ellps=WGS84 +units=m +no_defs Spatial extent (Daymet Lambert Conformal Conic, meters):xmin = −5 802 750 xmax = 3 809 250 ymin = −3 090 500 ymax = 4 984 500 File:daymet_v4_swe_monavg_NorthAmerica_combined_2023.tif– 12 layers (monthly means, January–December 2023)– Spatial resolution: 1 km– Coordinate system: Daymet Lambert Conformal Conic– Units: kg m⁻² (Snow Water Equivalent)– File format: GeoTIFF (LZW compressed) Data source: Daymet V4 Monthly Data on a 1 km Grid for North America (Oak Ridge National Laboratory Distributed Active Archive Center; daymet.ornl.gov)License: Open Data Commons Attribution License v1.0 (ODC-By 1.0)Citation: Thornton P.E. et al. (2022) Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 4 R1. ORNL DAAC, Oak Ridge, Tennessee, USA.