气候变化领域集成服务门户(CCPortal): Variations in the equilibrium line altitude of Urumqi Glacier No.1, Tianshan Mountains, over the past 50 years

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DOI	10.1007/s11434-012-5524-1
	Variations in the equilibrium line altitude of Urumqi Glacier No.1, Tianshan Mountains, over the past 50 years
	Dong ZhiWen; Qin DaHe; Ren JiaWen; Li KaiMing; Li ZhongQin
发表日期	2012
ISSN	1001-6538
起始页码	4776
结束页码	4783
卷号	57 期号:36
英文摘要	The glacier ELA is one of the important parameters reflecting climate change. Based on observations of the equilibrium line altitude (ELA) of Urumqi Glacier No.1 in the Tianshan Mountains, we established a statistical model between ELA and its major influencing factors, warm season air temperature (air temperature averages for May, June, July and August) and annual precipitation. Result showed that, warm season air temperature was the leading climatic factor influencing ELA variations. The glacier ELA ascends (descends) 61.7 m when warm season air temperature increases (decreases) by 1A degrees C, and ascends (descends) 13.1 m when cold season precipitation decreases (increases) by 10%. In the period 1959-2008, the glacier ELA showed a general increasing trend, ascending108 m and reaching its highest altitude in 2008 at 4168 m a.s.l., close to the glacier summit. If future climate is similar to that in the past 50 years, the ELA of Urumqi Glacier No.1 will still ascend with a speed of 2.16 m/a. However, If future climate is similar to that in the period 2000-2008, the ELA will still ascend with a speed of 6.5 m/a before it is stable. As a result of ELA variation, the accumulation area ratio (AAR) of the glacier showed a decreasing trend during the past 50 years.
英文关键词	Tianshan Mountains; Urumqi Glacier No.1; ELA; global warming
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
来源期刊	CHINESE SCIENCE BULLETIN
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158623
作者单位	Dong, ZW (corresponding author), Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Dong ZhiWen,Qin DaHe,Ren JiaWen,et al. Variations in the equilibrium line altitude of Urumqi Glacier No.1, Tianshan Mountains, over the past 50 years[J],2012,57(36).
APA	Dong ZhiWen,Qin DaHe,Ren JiaWen,Li KaiMing,&Li ZhongQin.(2012).Variations in the equilibrium line altitude of Urumqi Glacier No.1, Tianshan Mountains, over the past 50 years.CHINESE SCIENCE BULLETIN,57(36).
MLA	Dong ZhiWen,et al."Variations in the equilibrium line altitude of Urumqi Glacier No.1, Tianshan Mountains, over the past 50 years".CHINESE SCIENCE BULLETIN 57.36(2012).