Dataset supporting: One-third of winter landscape in shadow: how unaccounted trees leave high-latitude satellite imagery uncorrected, as evidenced in Northern Europe

Geospatial dataset supporting the journal article: "One-third of winter landscape in shadow: how unaccounted trees leave high-latitude satellite imagery uncorrected, as evidenced in Northern Europe" currently in review in Environmental Research Letters. The dataset includes: Winter and summer tree and terrain shadow layer over Northern Europe (10m resolution, raster) The above layer, aggregated into 25km by 25km grid cells (Vector format) Natural landscape shadow attribution (tree & terrain vs terrain-only shadow) (10m resolution, raster) Area estimates for each GADM administrative level-1 boundary (e.g. county/province) (Vector format) Key Attributes: Dataset-1 Pixel Values (Filename: Shadows_10m_0NotShad_1SummerOnlyShad_2BothDatesShad_3WinterOnlyShad.tif) 0: Not tree or terrain shadow 1: summer-only tree or terrain shadow 2: both summer and winter tree or terrain shadow 3: winter-only tree or terrain shadow Dataset-2 Field Names: (Filename: 25km_Grid.shp) Terr_ratio: ratio of a) terrain-only shadow to b) tree and terrain shadow. tree_ratio: percent of trees in each grid (based on WorldCover landcover) WO_Sh_Perc: Winter-only shadow percentage SO_Sh_Perc: Summer-only shadow percentage Bth_Sh_Per: Both dates shadow percentage Dataset-3 Pixel Values: (Filename: Tree_Vs_Terrain_10m_0NotShadow_1TreeTerrShad_2TerrShad.tif) 0 Not Tree or Terrain Shadow 1: Tree and Terrain Shadow 2: Terrain-Only Shadow Dataset-4 Field Names: (Filename: GADM_Level1_Province_Metrics.shp) VALUE0: Area of not shadow (Sq. meters) VALUE1: Area of summer-only shadow (Sq. meters) VALUE2: Area of botth summer and winter shadow (Sq. meters) VALUE3: Area of Winter-only shadow (Sq. meters) perc23: Percent unbiased area estimate (Olofsson 2014) shadowed in winter (Combination of VALUE 2 and VALUE 3). Note the adjustment is based on entire study area accuracy rates and not county-specific rates which were not computed. perc12: Percent unbiased area estimate (Olofsson 2014) shadowed in summer (Combination of VALUE 1 and VALUE 2). Note the adjustment is based on entire study area accuracy rates and not county-specific rates which were not computed. The remaining adj columns are the same adjusted metrics for the corresponding VALUE0, VALUE1 etc. class.