Articles | Volume 19, issue 11
https://doi.org/10.5194/tc-19-5361-2025
© 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/tc-19-5361-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Snow water equivalent retrieval and analysis over Altay using 12 d repeat-pass Sentinel-1 interferometry
Jingtian Zhou
National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
University of Chinese Academy of Sciences, Beijing, 100049, China
National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
University of Chinese Academy of Sciences, Beijing, 100049, China
Jinmei Pan
National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
Cunren Liang
School of Earth and Space Sciences, Peking University, Beijing, 100871, China
Zhang Yunjun
University of Chinese Academy of Sciences, Beijing, 100049, China
National Key Laboratory of Microwave Imaging, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, 100094, China
Weiliang Li
National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
University of Chinese Academy of Sciences, Beijing, 100049, China
Chuan Xiong
Southwest Jiaotong University, Faculty of Geosciences and Engineering, Chengdu, 611756, China
Jiancheng Shi
National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
Wei Ma
National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
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Earth Syst. Sci. Data, 16, 2501–2523, https://doi.org/10.5194/essd-16-2501-2024, https://doi.org/10.5194/essd-16-2501-2024, 2024
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Air temperature is an important parameter reflecting climate change, and the current method of obtaining daily temperature is affected by many factors. In this study, we constructed a temperature model based on weather conditions and established a correction equation. The dataset of daily air temperature (Tmax, Tmin, and Tavg) in China from 1979 to 2018 was obtained with a spatial resolution of 0.1°. Accuracy verification shows that the dataset has reliable accuracy and high spatial resolution.
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Short summary
Understanding how much water is stored in snow is important for tracking climate change and managing water supply. This study used satellite radar data from 2019 to 2021 to measure snow water changes in a mountain region of China. The results matched ground data well, especially in cold, dry conditions without heavy snowfall. A new phase calibration method helped improve accuracy, offering a useful reference for global snow monitoring using widely available satellite data.
Understanding how much water is stored in snow is important for tracking climate change and...