Article Dans Une Revue Geophysical Research Letters Année : 2025

Where Snow and Forest Meet: A Global Atlas

Résumé

Abstract The complex interactions between snow cover and forests have implications for ecosystems, water resources and the Earth's climate. However, the geographic distribution of where snow and forest overlap remains poorly known. Here, we evaluate the importance of snowfall over forested environments and its spatial variability at the global scale and a 0.1° spatial resolution, leveraging an existing climatological reanalysis and a satellite tree cover map. We find that 23% of the land mass (30.5·10 6 km 2 ) experiences snowfall in forested areas, mostly in the boreal forest (15.8·10 6 km 2 ) and elsewhere in mountains (4.9·10 6 km 2 ). There, the solid fraction of precipitation in forest is greater than the median value of 11.1% over 15.3·10 6 km 2 , reaches 64% locally, and 23% when aggregated over hydrological basins larger than 10 5 km 2 .

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Cite 10.5281/zenodo.14170352 Jeu de données Deschamps-Berger, C. (2024). Global Atlas of Fraction of Snowfall in Forest [Data set]. Zenodo. https://doi.org/10.5281/ZENODO.14170352

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hal-05160320 , version 1 (13-07-2025)

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C. Deschamps-Berger, J. López-Moreno, S. Gascoin, G. Mazzotti, A. Boone. Where Snow and Forest Meet: A Global Atlas. Geophysical Research Letters, 2025, 52 (10), pp.e2024GL113684. ⟨10.1029/2024GL113684⟩. ⟨hal-05160320⟩
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