气候变化领域集成服务门户(CCPortal): Elevation dependency of mountain snow depth

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DOI	10.5194/tc-8-2381-2014
	Elevation dependency of mountain snow depth
	Grünewald T.; Bühler Y.; Lehning M.
发表日期	2014
ISSN	19940416
卷号	8 期号:6
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.
学科领域	avalanche; data set; elevation; precipitation (climatology); seasonal variation; snow; spatial distribution
语种	英语
scopus关键词	avalanche; data set; elevation; precipitation (climatology); seasonal variation; snow; spatial distribution
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119995
作者单位	WSL Institute for Snow and Avalanche Research SLF, Davos, 7260, Switzerland; Cryos, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
推荐引用方式 GB/T 7714	Grünewald T.,Bühler Y.,Lehning M.. Elevation dependency of mountain snow depth[J],2014,8(6).
APA	Grünewald T.,Bühler Y.,&Lehning M..(2014).Elevation dependency of mountain snow depth.Cryosphere,8(6).
MLA	Grünewald T.,et al."Elevation dependency of mountain snow depth".Cryosphere 8.6(2014).