Articles | Volume 19, issue 9
https://doi.org/10.5194/tc-19-3571-2025
https://doi.org/10.5194/tc-19-3571-2025
Research article
 | 
09 Sep 2025
Research article |  | 09 Sep 2025

Retrieving frozen ground surface temperature under the snowpack in the Arctic permafrost area from SMOS observations

Juliette Ortet, Arnaud Mialon, Alain Royer, Mike Schwank, Manu Holmberg, Kimmo Rautiainen, Simone Bircher-Adrot, Andreas Colliander, Yann Kerr, and Alexandre Roy

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Cited articles

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Short summary
We propose a new method to determine the ground surface temperature under the snowpack in the Arctic area from satellite observations. The obtained ground temperature time series were evaluated over 21 reference sites in Northern Alaska and compared with ground temperatures obtained with global models. The method is extremely promising for monitoring ground temperature below the snowpack and studying the spatio-temporal variability thanks to 15 years of observations over the whole Arctic area.
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