首页|Snowpack variations and their hazardous effects under climate warming in the central Tianshan Mountains

Snowpack variations and their hazardous effects under climate warming in the central Tianshan Mountains

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  • 国家科技期刊平台
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  • NSTL
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Climate change alters snowpack evolution,which in turn influences the likelihood of snow avalanches and flood risks.The lack of systemic observational data on key snow characteristics in high mountains remains a scientific challenge in terms of systematically elucidating the dynamic chain of variations in climate-snowpack-snow disasters.This restricts our understanding and poses challenges in the prediction of snow-related disaster risks.As such,this study analysed the variations of temperature and snowfall and the physical characteristics of snowpacks based on ground-based observations from the Kunse River Valley situated in the Tianshan Mountains from 1967 to 2021.The results reveal that the temperature increased significantly by 0.32 ℃ per decade(p＜0.01)during the snow season,along with more extreme snowfall events.The snow-cover duration was observed to have been shortened by 4.77 d per decade(p＜0.01)from 1967 to 2021,which is characterised by later snow-cover onset and earlier snowmelt.Concurrently,average and maximum snow depths increased along with an increase in peak snow water equivalent,thus indicating a higher frequency of extremely scarce or abundant snow years.The low snowpack temperature gradient and earlier snowmelt dates in spring lead to earlier occurrences of snowmelt floods and wet avalanches.As the risks of these events increase,they pose greater threats to farmlands,road transportation,water-electricity infrastructure and several other human activities.Therefore,these insights are critical for providing vital information that can deepen our understanding of the impact of climate change on snowpack characteristics and improve management strategies for snow-related disaster prevention and mitigation.

Climate changeSnowpack variationsSnow-related disasterTianshan Mountains

Jian-Sheng HAO、Yan WANG、Lan-Hai LI

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Key Laboratory of Land Surface Pattern and Simulation,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences(CAS),Beijing 100101,China

Xinjiang Key Laboratory of Water Cycle and Utilization in Arid Zone,Urumqi 830011,China

State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China

Tianshan Snowcover and Avalanche Observation and Research Station of Xinjiang,Xinyuan 835800,China

CAS Research Center for Ecology and Environment of Central Asia,Urumqi 830011,China

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Second Tibetan Plateau Scientific Expedition and Research Program(STEP)Young Elite Scientists Sponsorship Program by CASTXinjiang Key Laboratory of Water Cycle and Utilization in Arid ZoneNational Cryosphere Desert Data CenterXinjiang Transportation Investment Co.,Ltd

2019QZKK09032022QNRC001XJYS0907-2023-242021kf02ZKXFWCG2022060004

2024

10.1016/j.accre.2024.06.001

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

影响因子：0.806
ISSN：1674-9278
年,卷(期)：2024.15(3)