Fig. 5
From: Snow depth variability in the Northern Hemisphere mountains observed from space

Time series of snow depth measurements and retrievals. a The average weekly snow depth (m) over all measurement sites and corresponding Sentinel-1 grid cells across the Northern Hemisphere. b–l As in a, but averaged over the focus mountain ranges (Fig. 1b). The performance metrics shown in the top left of each figure include the temporal correlation (Rt; dimensionless), the February spatial correlation (Rs; dimensionless), and the number of sites (N; dimensionless) used to calculate the metrics