Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 17, issue 11
Articles | Volume 17, issue 11
https://doi.org/10.5194/essd-17-6273-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-17-6273-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 11
Data description paper
 | 
20 Nov 2025
Data description paper |  | 20 Nov 2025

A high-resolution (0.05°) global seamless continuity record (2002–2023) of near-surface soil freeze-thaw states via passive microwave and optical satellite data

Defeng Feng, Tianjie Zhao, Jingyao Zheng, Yu Bai, Youhua Ran, Xiaokang Kou, Lingmei Jiang, Ziqian Zhang, Pei Yu, Jinbiao Zhu, Jie Pan, Jiancheng Shi, and Yuei-An Liou

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Short summary
This study introduces a downscaling approach integrating passive microwave and optical satellite data to generate a long-term (2002–2023), high-resolution (0.05°) global near-surface freeze-thaw (FT) state dataset with daily seamless continuity. The dataset attains 83.78 % overall accuracy, consistent with the microwave-based products but with finer spatial detail. This detailed FT record provides valuable information to enhance the understanding of global hydrological and ecological impacts.
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