Reconstructing ice phenology of a lake with complex surface cover: a case study of Lake Ulansu during 1941–2023

Huo, Puzhen; Lu, Peng; Cheng, Bin; Yu, Miao; Wang, Qingkai; Li, Xuewei; Li, Zhijun

doi:https://doi.org/10.5194/tc-19-849-2025

Articles | Volume 19, issue 2

https://doi.org/10.5194/tc-19-849-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-19-849-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 2

Research article

|

25 Feb 2025

Research article |

| 25 Feb 2025

Reconstructing ice phenology of a lake with complex surface cover: a case study of Lake Ulansu during 1941–2023

Puzhen Huo, Peng Lu, Bin Cheng, Miao Yu, Qingkai Wang, Xuewei Li, and Zhijun Li

Data sets

Lake Ulansu Ice Phenology Data (1941–2023) Puzhen Huo https://doi.org/10.5281/zenodo.10848522

MEaSUREs calibrated enhanced-resolution passive microwave daily EASE-grid 2.0 brightness temperature ESDR M. Brodzik et al. https://doi.org/10.5067/MEASURES/CRYOSPHERE/NSIDC-0630.001.

ERA5 hourly data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

Short summary

We developed a new method for retrieving lake ice phenology for a lake with complex surface cover. The method is particularly useful for mixed-pixel satellite data. We implement this method on Lake Ulansu, a lake characterized by complex shorelines and aquatic plants in northwestern China. In connection with a random forest model, we reconstructed the longest lake ice phenology in China.