Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 12
Articles | Volume 19, issue 12
https://doi.org/10.5194/gmd-19-5743-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-5743-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 12
Model evaluation paper
 | 
01 Jul 2026
Model evaluation paper |  | 01 Jul 2026

Optimization of snow cover fraction parameterization in the Community Land Model: implementation and preliminary validation over the Tibetan Plateau

Kai Yang, Chenghai Wang, Yang Cui, Lingyun Ai, Feimin Zhang, and Pinghan Zhaoye

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Short summary
Climate models still exhibit substantial cold biases over the Tibetan Plateau, with snow cover biases recognized as one of the major contributing factors. By incorporating the effects of standing dead grass stems and topographic relief on snow distribution and snow depletion processes, the snow cover fraction (SCF) parameterization was optimized, reducing positive SCF biases by 63 % and alleviating surface cold biases by approximately 1–2 °C in snow-affected regions.
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