Superconducting Gravimeter Observations Show That a Satellite‐Derived Snow Depth Image Improves the Simulation of the Snow Water Equivalent Evolution in a High Alpine Site
Abstract The lack of accurate information on the spatiotemporal variations of snow water equivalent (SWE) in mountain catchments remains a key problem in snow hydrology and water resources management. This is partly because there is no sensor to measure SWE beyond local scale. At Mt. Zugspitze, Germany, a superconducting gravimeter senses the gravity effect of the seasonal snow, reflecting the temporal evolution of SWE in a few kilometers scale radius. We used this new observation to evaluate two configurations of the Alpine3D distributed snow model. In the default run, the model was forced with meteorological station data. In the second run, we applied precipitation correction based on an 8 m resolution snow depth image derived from satellite observations (Pléiades). The snow depth image strongly improved the simulation of the snowpack gravity effect during the melt season. This result suggests that satellite observations can enhance SWE analyses in mountains with limited infrastructure.
Authors
- César Deschamps‐Berger (ORCID: https://orcid.org/0000-0003-3017-5250)
- Christian Voigt (ORCID: https://orcid.org/0000-0002-9988-965X)
- Michael Lehning (ORCID: https://orcid.org/0000-0002-8442-0875)
- Simon Gascoin (ORCID: https://orcid.org/0000-0002-4996-6768)
- Till Rehm (ORCID: https://orcid.org/0000-0002-5906-6181)
- Karsten Schulz (ORCID: https://orcid.org/0000-0002-6616-2876)
- Paul Schattan (ORCID: https://orcid.org/0000-0002-9759-6351)
- Franziska Koch (ORCID: https://orcid.org/0000-0001-5826-295X)
- Karl‐Friedrich Wetzel (ORCID: https://orcid.org/0000-0001-8914-3654)
- Korbinian Achmüller
Institutions
- Centre National de la Recherche Scientifique (FR)
- Université Toulouse III - Paul Sabatier (FR)
- Université Fédérale de Toulouse Midi-Pyrénées (FR)
- University of Augsburg (DE)
- Centre d'Études Spatiales de la Biosphère (FR)
- GFZ Helmholtz Centre for Geosciences (DE)
- Institut de Recherche pour le Développement (FR)
- Technische Universität Berlin (DE)
- BOKU University (AT)
Publication Details
- Journal
- Geophysical Research Letters
- Published
- 2024-12-20
- DOI
- https://doi.org/10.1029/2024gl112483
- Citations
- 4
- Primary Topic
- Cryospheric studies and observations
- Type
- article
- Field-Weighted Citation Impact
- 1.51
Funders
- Deutsche Forschungsgemeinschaft
- Austrian Science Fund