The Cryosphere
The Cryosphere
TC
Articles | Volume 20, issue 11
Articles | Volume 20, issue 11
https://doi.org/10.5194/tc-20-6157-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-20-6157-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 11
Research article
 | 
30 Oct 2026
Research article |  | 30 Oct 2026

Assessment of snow depth retrievability from passive microwave observations over Arctic sea ice: a global sensitivity analysis

Ziyu Yan, Yufang Ye, Georg Heygster, Bin Cheng, Carolina Gabarró, Ferran Hernández-Macià, and Xiao Cheng

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Short summary
Passive microwave retrieval of snow depth remains constrained by snow and ice conditions. By combining the Snow Microwave Radiative Transfer model with global sensitivity analysis, this study quantifies how snow grain radius, density, and sea ice type affect snow depth retrievability across channels. The small grain radius of new snow limits retrieval performance and increases its sensitivity to sea ice type, while the use of the 89 GHz channel may help address this limitation.
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