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Snow cover climatology and trends in the European Alps from in-situ observations, remote sensing, and regional climate models

Authors

Matiu,  Michael
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Crespi,  Alice
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Bertoldi,  Giacomo
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Carmagnola,  Carlo Maria
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Marty,  Christoph
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Morin,  Samuel
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Schöner,  Wolfgang
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Bozzoli,  Michele
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Majone,  Bruno
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Giovannini,  Lorenzo
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Zardi,  Dino
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Hanzer,  Florian
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Matiu, M., Crespi, A., Bertoldi, G., Carmagnola, C. M., Marty, C., Morin, S., Schöner, W., Bozzoli, M., Majone, B., Giovannini, L., Zardi, D., Hanzer, F. (2023): Snow cover climatology and trends in the European Alps from in-situ observations, remote sensing, and regional climate models, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-1751


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017840
Abstract
The European Alps are a major mountain range in Europe with a long history of dense in-situ observations of snow cover, whose analysis is hampered by the fragmentation of observer networks and the varying quality and availability of their data. Here we present a collation of in-situ observations of snow depth and depth of snowfall across the whole Alps. We employed novel quality checks and gap-filling procedures based on spatial correlation, which work in areas with a moderate to high density of stations. We show how the climatology of in-situ snow depth and remotely sensed snow cover duration matches the expected climatic forcing zones. These large-scale climatic zones not only influenced day-to-day variability but also long-term trends. A multivariate attribution study highlights the impact of temperature and precipitation variability on snowfall patterns in a smaller subregion. Finally, future snow cover information is derived from an ensemble of regional climate models.