气候变化领域集成服务门户(CCPortal): Application of a distributed degree-day model of glaciers in the upper reaches of the Beida River Basin

CCPortal

DOI	10.1007/s12665-015-4973-7
	Application of a distributed degree-day model of glaciers in the upper reaches of the Beida River Basin
	Wang, Sheng; Wang, Jinfeng; Pu, Jianchen
通讯作者	Wang, S (通讯作者)
发表日期	2016
ISSN	1866-6280
EISSN	1866-6299
卷号	75 期号:6
英文摘要	Based on in-situ data of Qiyi Glacier from 2010 to 2012, a daily distributed degree-day model on a 90 x 90 m grid was developed to simulate the spatial and temporal variations of the glacier mass balance, ELA, and meltwater run-off depth in the Beida River Basin from 1957 to 2012. In the model, different vertical lapse rates of temperature and precipitation gradients were used in different months and height-belts, and the influence of 'temperature jump' was also considered. The results indicated that the average annual mass balance and meltwater run-off depth of the glaciers in the Beida River Basin were -93.3 mm w.e. and 443 mm, respectively. Assuming a continuous linear trend, the ELA had risen by 505 m over 55 years. The mass balance linearly increased with the altitude in the cold season (Oct.-Apr.) and exponentially in the warm season (May-Sep.). The most possible abrupt change points of the mass balance, ELA, and meltwater run-off depth time series were all in 1992/93, as determined through the M-K test. The mass balance turned increasingly negative since then, but the ELA and meltwater run-off increased rapidly. The climate sensitivity test showed that the air temperature was a dominant factor that affected the mass balance of the continental glaciers on the basin scale, which was different from the response mechanism of maritime glaciers. When the air temperature (+1 degrees C) and precipitation (+10 %) increased simultaneously, the glacier mass loss and meltwater run- off reached 1.66 x 10(8) m(3) and 2.45 x 10(8) m(3), respectively.
关键词	SURFACE-ENERGY-BALANCE SEA-LEVEL RISE MASS-BALANCE EQUILIBRIUM-LINE ICE CAPS SENSITIVITY CLIMATE DAROLLA RADIATION ABLATION
英文关键词	Distributed degree-day model of glacier; Application; Mass balance; The Beida River Basin
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000372251000044
来源期刊	ENVIRONMENTAL EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258645
推荐引用方式 GB/T 7714	Wang, Sheng,Wang, Jinfeng,Pu, Jianchen. Application of a distributed degree-day model of glaciers in the upper reaches of the Beida River Basin[J]. 中国科学院青藏高原研究所,2016,75(6).
APA	Wang, Sheng,Wang, Jinfeng,&Pu, Jianchen.(2016).Application of a distributed degree-day model of glaciers in the upper reaches of the Beida River Basin.ENVIRONMENTAL EARTH SCIENCES,75(6).
MLA	Wang, Sheng,et al."Application of a distributed degree-day model of glaciers in the upper reaches of the Beida River Basin".ENVIRONMENTAL EARTH SCIENCES 75.6(2016).