干旱区生态环境知识资源中心(Arid): Variations in Glacier Runoff Contributed by the Increased Negative Mass Balance over the Last Forty Years in the Tien Shan Mountains

Arid

DOI	10.3390/w14071006
	Variations in Glacier Runoff Contributed by the Increased Negative Mass Balance over the Last Forty Years in the Tien Shan Mountains
	Wang, Hongyu; Xu, Changchun; Ying, Gang; Liu, Fang; Long, Yunxia
通讯作者	Xu, CC
来源期刊	WATER
EISSN	2073-4441
出版年	2022
卷号	14 期号:7
英文摘要	In the context of global warming, the melting of glaciers in the Tien Shan Mountains as the important solid reservoir in the arid area of Central Asia is accelerating in recent decades, leading to profound changes in regional water resources. Based on the simulated glaciological data from the Python Glacier Evolution Model (PyGEM) and the measured glaciological data from the World Glacier Monitoring Service (WGMS), this paper analyzed the applicability of simulated data, the changes in glacier mass balance, and the responses of the glacier to climate change and its impacts on glacier runoff in the Tien Shan Mountains. The results show that (1) the PyGEM simulation dataset is in good agreement with the measurements, which can effectively reproduce the change in the glacier mass balance in the Tien Shan Mountains glaciers and is suitable for studying the regional scale glacier change. (2) From 1980 to 2016, the decadal average mass balance change rate of glaciers in the Tien Shan Mountains was -0.012 m w.e. yr(-1). The regional mass balance showed an overall negative increasing trend (the area with increasingly negative accounted for 80.13% of the entire area), with a positive increase that only occurred in the West Tien Shan Mountains and western North Tien Shan Mountains (19.87%). (3) The correlation between the temperature and mass balance is much higher than that between the precipitation and mass balance. Temperature dominates the change and development of regional glaciers. The increase in negative glacier mass balance that was observed in the study area is mainly affected by the rising temperature, the decreasing solid precipitation in the accumulation period, and the rapid melting in the ablation period. (4) The glacier runoff in the six representative rivers showed an increasing trend. The contribution rate of glacier runoff to river runoff changed significantly after 2000 but differed among rivers. Overall, the larger the glacier area in the source region is, the greater the contribution rate of glacier runoff is, and the more the contribution rate continuously increases or fluctuates; otherwise, the contribution rate keeps declining, which means the runoff peak may have passed and future runoff may decrease.
英文关键词	climate change glacier mass balance glacier runoff PyGEM Tien Shan
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000781333300001
WOS关键词	TEMPERATURE ; RETREAT
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394775
推荐引用方式 GB/T 7714	Wang, Hongyu,Xu, Changchun,Ying, Gang,et al. Variations in Glacier Runoff Contributed by the Increased Negative Mass Balance over the Last Forty Years in the Tien Shan Mountains[J],2022,14(7).
APA	Wang, Hongyu,Xu, Changchun,Ying, Gang,Liu, Fang,&Long, Yunxia.(2022).Variations in Glacier Runoff Contributed by the Increased Negative Mass Balance over the Last Forty Years in the Tien Shan Mountains.WATER,14(7).
MLA	Wang, Hongyu,et al."Variations in Glacier Runoff Contributed by the Increased Negative Mass Balance over the Last Forty Years in the Tien Shan Mountains".WATER 14.7(2022).