气候变化领域集成服务门户(CCPortal): Snow-cover reconstruction methodology for mountainous regions based on historic in situ observations and recent remote sensing data

CCPortal

DOI	10.5194/tc-9-451-2015
	Snow-cover reconstruction methodology for mountainous regions based on historic in situ observations and recent remote sensing data
	Gafurov A.; Vorogushyn S.; Farinotti D.; Duethmann D.; Merkushkin A.; Merz B.
发表日期	2015
ISSN	19940416
卷号	9 期号:2
英文摘要	Spatially distributed snow-cover extent can be derived from remote sensing data with good accuracy. However, such data are available for recent decades only, after satellite missions with proper snow detection capabilities were launched. Yet, longer time series of snow-cover area are usually required, e.g., for hydrological model calibration or water availability assessment in the past. We present a methodology to reconstruct historical snow coverage using recently available remote sensing data and long-term point observations of snow depth from existing meteorological stations. The methodology is mainly based on correlations between station records and spatial snow-cover patterns. Additionally, topography and temporal persistence of snow patterns are taken into account. The methodology was applied to the Zerafshan River basin in Central Asia - a very data-sparse region. Reconstructed snow cover was cross validated against independent remote sensing data and shows an accuracy of about 85%. The methodology can be used in mountainous regions to overcome the data gap for earlier decades when the availability of remote sensing snow-cover data was strongly limited. © Author(s) 2015.
学科领域	in situ measurement; mountain region; reconstruction; remote sensing; satellite data; snow cover; spatial distribution; water availability; weather station; Zeravshan Basin
语种	英语
scopus关键词	in situ measurement; mountain region; reconstruction; remote sensing; satellite data; snow cover; spatial distribution; water availability; weather station; Zeravshan Basin
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/119946
作者单位	Department of Hydrology, GFZ German Research Centre for Geosciences, Potsdam, Germany; Uzbek Hydrometeorological Service (Uzhydromet), Tashkent, Uzbekistan; Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, Switzerland
推荐引用方式 GB/T 7714	Gafurov A.,Vorogushyn S.,Farinotti D.,et al. Snow-cover reconstruction methodology for mountainous regions based on historic in situ observations and recent remote sensing data[J],2015,9(2).
APA	Gafurov A.,Vorogushyn S.,Farinotti D.,Duethmann D.,Merkushkin A.,&Merz B..(2015).Snow-cover reconstruction methodology for mountainous regions based on historic in situ observations and recent remote sensing data.Cryosphere,9(2).
MLA	Gafurov A.,et al."Snow-cover reconstruction methodology for mountainous regions based on historic in situ observations and recent remote sensing data".Cryosphere 9.2(2015).