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.
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.
the Creative Commons Attribution 4.0 License.
Data description paper
| 
20 Nov 2025
Data description paper |
| 20 Nov 2025
| 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
State Key Laboratory of Remote Sensing and Digital Earth, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China
Tianjie Zhao
CORRESPONDING AUTHOR
State Key Laboratory of Remote Sensing and Digital Earth, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China
Jingyao Zheng
State Key Laboratory of Remote Sensing and Digital Earth, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
Yu Bai
State Key Laboratory of Remote Sensing and Digital Earth, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
Youhua Ran
University of Chinese Academy of Sciences, Beijing 100049, China
State Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Heihe Remote Sensing Experimental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
Xiaokang Kou
School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
Key Laboratory of Roads and Railway Engineering Safety Control, Shijiazhuang Tiedao University, Ministry of Education, Shijiazhuang 050043, China
Lingmei Jiang
State Key Laboratory of Remote Sensing and Digital Earth, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
Ziqian Zhang
State Key Laboratory of Remote Sensing and Digital Earth, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
Pei Yu
School of Geospatial Engineering and Science, Sun Yat-sen University, Zhuhai 519082, China
Jinbiao Zhu
Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
Aeronautical Remote Sensing Center, Chinese Academy of Sciences, Beijing 100094, China
School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China
Jie Pan
Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
Aeronautical Remote Sensing Center, Chinese Academy of Sciences, Beijing 100094, China
School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China
Jiancheng Shi
National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
Yuei-An Liou
Hydrology Remote Sensing Laboratory, Center for Space and Remote Sensing Research, National Central University, Taoyuan 320317, China
Data sets
Global 0.05° near-surface freeze/thaw state dataset v2.0 (2002-2023) Tianjie Zhao et al. https://doi.org/10.11888/Cryos.tpdc.301551
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.
This study introduces a downscaling approach integrating passive microwave and optical satellite...
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