DOI: 10.5194/tc-8-2381-2014
Scopus记录号: 2-s2.0-84910092790
论文题名: Elevation dependency of mountain snow depth
作者: Grünewald T ; , Bühler Y ; , Lehning M
刊名: Cryosphere
ISSN: 19940416
出版年: 2014
卷: 8, 期: 6 起始页码: 2381
结束页码: 2394
语种: 英语
英文关键词: avalanche
; data set
; elevation
; precipitation (climatology)
; seasonal variation
; snow
; spatial distribution
英文摘要: Elevation strongly affects quantity and distribution patterns of precipitation and snow. Positive elevation gradients were identified by many studies, usually based on data from sparse precipitation stations or snow depth measurements. We present a systematic evaluation of the elevation-snow depth relationship. We analyse areal snow depth data obtained by remote sensing for seven mountain sites near to the time of the maximum seasonal snow accumulation. Snow depths were averaged to 100m elevation bands and then related to their respective elevation level. The assessment was performed at three scales: (i) the complete data sets (10 km scale), (ii) sub-catchments (km scale) and (iii) slope transects (100m scale).We show that most elevation-snow depth curves at all scales are characterised through a single shape. Mean snow depths increase with elevation up to a certain level where they have a distinct peak followed by a decrease at the highest elevations. We explain this typical shape with a generally positive elevation gradient of snow fall that is modified by the interaction of snow cover and topography. These processes are preferential deposition of precipitation and redistribution of snow by wind, sloughing and avalanching. Furthermore, we show that the elevation level of the peak of mean snow depth correlates with the dominant elevation level of rocks (if present). © Author(s) 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/74748
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland; Cryos, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
Recommended Citation:
Grünewald T,, Bühler Y,, Lehning M. Elevation dependency of mountain snow depth[J]. Cryosphere,2014-01-01,8(6)