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学科主题: 地理学::自然地理学
题名: Application of a distributed degree-day model of glaciers in the upper reaches of the Beida River Basin
作者: Wang, S (Wang, Sheng)1; Wang, JF (Wang, Jinfeng)2; Pu, JC (Pu, Jianchen)3
通讯作者: Wang, S
刊名: ENVIRONMENTAL EARTH SCIENCES
发表日期: 2016
DOI: 10.1007/s12665-015-4973-7
卷: 75, 期:6, 页:493
收录类别: SCI
合作性质: 国内
文章类型: Article
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.
语种: 英语
WOS记录号: WOS:000372251000044
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7746
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China

Recommended Citation:
Wang, S ,Wang, JF ,Pu, JC . Application of a distributed degree-day model of glaciers in the upper reaches of the Beida River Basin[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(6):493.
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