DOI: 10.1007/s10584-017-2102-1
Scopus记录号: 2-s2.0-85032974728
论文题名: Slowing down the retreat of the Morteratsch glacier, Switzerland, by artificially produced summer snow: a feasibility study
作者: Oerlemans J. ; Haag M. ; Keller F.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2017
卷: 145, 期: 2018-01-02 起始页码: 189
结束页码: 203
语种: 英语
Scopus关键词: Ablation
; Climate change
; Equilibrium line altitudes
; Feasibility studies
; Ice-flow models
; Model approach
; Switzerland
; Time-scales
; Weather stations
; Snow
; ablation
; experimental study
; feasibility study
; glacier retreat
; global warming
; snow
; summer
; valley glacier
; weather station
; Alps
; Graubunden
; Morteratsch Glacier
; Pontresina
; Switzerland
英文摘要: Many large valley glaciers in the world are retreating at historically unprecedented rates. Also in the Alps, where warming over the past decades has been more than twice as large as the global mean, all major glaciers have retreated over distances of several kilometers over the past hundred years. The Morteratsch Glacier, Pontresina, Switzerland, is a major touristic attraction. Due to strong retreat, the lowest part of the glacier is getting out of sight from the gravel road that provided direct access to the glacier front. The Community of Pontresina has commissioned a preparatory study to find out if it is possible to slow down the retreat of the Morteratsch Glacier in an environmentally friendly way. In this article, we report on the outcome of such a study, based on a modeling approach. Our analysis is based on a 20-year weather station record from the lower part of the glacier, combined with calculations with a calibrated ice-flow model. We arrive at the conclusion that producing summer snow in the ablation zone over a larger area (typically 0.5 to 1 km2) may have a significant effect on the rate of retreat on a timescale of decades. We consider various scenarios of climate change: (i) no change, (ii) a rise of the equilibrium-line altitude (ELA) by 1, 2, and 4 m/yr. Projections of glacier length are calculated until the year 2100. It takes about 10 years before snow deposition in the higher ablation zone starts to affect the position of the glacier snout. For the case of modest warming, the difference in glacier length between the snow and no-snow experiments becomes 400 to 500 m within two decades. © 2017, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83872
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Institute for Marine and Atmospheric Research—IMAU, Utrecht University, Princetonplein 5, Utrecht, Netherlands; Fachhochschule Nordwestschweiz, Olten, Switzerland; Academia Engiadina, Samedan, Switzerland
Recommended Citation:
Oerlemans J.,Haag M.,Keller F.. Slowing down the retreat of the Morteratsch glacier, Switzerland, by artificially produced summer snow: a feasibility study[J]. Climatic Change,2017-01-01,145(2018-01-02)