Weakened Snowmelt Contribution to Floods in a Climate-Changed Tibetan Basin DOI Open Access
Liting Niu, Jian Wang, Hongyi Li

и другие.

Water, Год журнала: 2025, Номер 17(4), С. 507 - 507

Опубликована: Фев. 11, 2025

Climate warming has led to changes in floods snow-packed mountain areas, but how snowmelt contributes the high-altitude Tibetan Plateau remains be studied. To solve this problem, we propose a more reasonable method for evaluating snowmelt’s contributions floods. We use distributed hydrological model with capability track paths different media, such as snowpack, soil, and groundwater, assess contribution peak discharge. The study area, Xiying River basin, is located northeast of Plateau. Our results show that past 40 years, average annual air temperature basin increased significantly at rate 0.76 °C/10a. precipitation (precipitation sum rainfall snowfall) decreased 5.59 mm/10a, while 11.01 mm/10a. These trends were not obvious. snowfall showed significant decrease, 14.41 snowmelt-driven 85.78%, rainfall-driven 10.70%. Under influence climate change, frequency significantly, flood time advanced notably, intensity slowly basin. causes change are increase noticeable decrease runoff depth. weakened, resulting slight also indicate rising could In together promote formation While dominates discharge, snowpack play role variability have changed under which main cause variability. adds uncertainties even size high areas. This can help us understand risk change.

Язык: Английский

Weakened Snowmelt Contribution to Floods in a Climate-Changed Tibetan Basin DOI Open Access
Liting Niu, Jian Wang, Hongyi Li

и другие.

Water, Год журнала: 2025, Номер 17(4), С. 507 - 507

Опубликована: Фев. 11, 2025

Climate warming has led to changes in floods snow-packed mountain areas, but how snowmelt contributes the high-altitude Tibetan Plateau remains be studied. To solve this problem, we propose a more reasonable method for evaluating snowmelt’s contributions floods. We use distributed hydrological model with capability track paths different media, such as snowpack, soil, and groundwater, assess contribution peak discharge. The study area, Xiying River basin, is located northeast of Plateau. Our results show that past 40 years, average annual air temperature basin increased significantly at rate 0.76 °C/10a. precipitation (precipitation sum rainfall snowfall) decreased 5.59 mm/10a, while 11.01 mm/10a. These trends were not obvious. snowfall showed significant decrease, 14.41 snowmelt-driven 85.78%, rainfall-driven 10.70%. Under influence climate change, frequency significantly, flood time advanced notably, intensity slowly basin. causes change are increase noticeable decrease runoff depth. weakened, resulting slight also indicate rising could In together promote formation While dominates discharge, snowpack play role variability have changed under which main cause variability. adds uncertainties even size high areas. This can help us understand risk change.

Язык: Английский

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