首页|Variations in equilibrium line altitude of the Qiyi Glacier, Qilian Mountains, over the past 50 years
Variations in equilibrium line altitude of the Qiyi Glacier, Qilian Mountains, over the past 50 years
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Based on observations of the equilibrium line altitude （ELA） of the Qiyi Glacier in the Qilian Mountain, we established a statisti- cal model between ELA and its major influencing factors, warm season air temperature （air temperature averages for September, July and August） and cold season precipitation （total precipitation in the period January through March）. Warm season air tem- perature was the leading climatic factor influencing ELA variations. The glacier ELA ascends （descends） 172 m when warm sea- son air temperature increases （decreases） by I~C, and ascends （descends） 62 m when cold season precipitation decreases （in- creases） by 10%. In the period 1958-2008, the glacier ELA showed a general increasing trend, ascending 230 m and reaching its highest altitude in 2006 at 5131 m a.s.l., close to the glacier summit. If future climate is similar to that in the period 2001-2008, the Qiyi Glacier will not stabilize until it retreats by 2.08 km.
Qilian MountainsQiyi GlacierELAglobal warming
WANG NingLian、HE JianQiao、PU JianChen、JIANG Xi、JING ZheFan
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State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy ofSciences, Lanzhou 730000, China
祁连山 冰川 高度变化 学业成绩 气温上升 平均气温 总降水量 气候因素
Knowledge Innovation Program of the Chinese Academy of SciencesNational Basic Re- search Program of China国家自然科学基金
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