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- Title
Lake Ice Simulation and Evaluation for a Typical Lake on the Tibetan Plateau.
- Authors
Si, Yajun; Li, Zhi; Wang, Xiaocong; Liu, Yimin; Jin, Jiming
- Abstract
This study aims to simulate the lake ice conditions in the Nam Co lake using a lake ice model, which is a one-dimensional physics-based model that utilizes enthalpy as the predictor variable. We modified the air density schemes within the model to improve the accuracy of the lake ice simulation. Additionally, the process of lake ice sublimation was included, and the effect of lake water salinity on the freezing point was considered. Using the improved lake ice model, we simulated lake surface water temperature, lake ice thickness, and interannual variations in lake ice phenology, and we compared these results with observations at Nam Co. The results demonstrate that the improved model better reproduces the lake surface water temperature, lake ice thickness, and lake ice phenology at Nam Co. Additionally, the thin air density affects lake processes by weakening sensible heat and latent heat, which ultimately leads to a delayed ice-on date and a slightly earlier ice-free date in Nam Co. This study contributes to an enhanced understanding of the freeze–thaw processes in Nam Co and reduces the biases in lake ice simulation on the Tibetan Plateau through the lake model improvement.
- Subjects
TIBETAN Plateau; ICE on rivers, lakes, etc.; LATENT heat; WATER temperature; SUBGLACIAL lakes; FREEZE-thaw cycles; INDEPENDENT variables; FREEZING points
- Publication
Water (20734441), 2023, Vol 15, Issue 17, p3088
- ISSN
2073-4441
- Publication type
Article
- DOI
10.3390/w15173088