There was a mistake in Figure 1 as published. The second label of the y-axis of the snow cover area in the upper right subpanel should be “30,” not “20.” The corrected Figure 1 appears below.
Spatial distribution of the snow cover duration and the evolution of the snow-covered area at global scale as observed from space over the past 2 decades. The snow cover area time series was computed in four land classes (Greenland, Antarctica, mountains regions and flat areas) to highlight the significance of the seasonal snow in mountain regions. The snow-covered area was obtained from MOD10C1 monthly products (Hall and Riggs, 2021) and post-processed to fill missing values using a linear interpolation in the time dimension. Mask of the mountain areas sourced from Viviroli et al. (2020). The snow cover area time series indicate that the interannual variability is low in comparison with the seasonal variability.
Line graph shows global snow cover area from 2000 to 2020, with seasonal fluctuations peaking near 70 million square kilometers in winter and declining in summer. Separate color bands indicate snow cover over mountains, Greenland, and Antarctica. Insets display a world map of annual snow cover duration, a bar chart of seasonal snow area variation, and a second world map highlighting global mountain regions.
The original article has been updated.
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Edited and reviewed by:Alexander Kokhanovsky, University of Marburg, Germany