气候变化领域集成服务门户(CCPortal): A satellite-based snow cover climatology (1985-2011) for the European Alps derived from AVHRR data

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DOI	10.5194/tc-8-73-2014
	A satellite-based snow cover climatology (1985-2011) for the European Alps derived from AVHRR data
	Hüsler F.; Jonas T.; Riffler M.; Musial J.P.; Wunderle S.
发表日期	2014
ISSN	19940416
卷号	8 期号:1
英文摘要	Seasonal snow cover is of great environmental and socio-economic importance for the European Alps. Therefore a high priority has been assigned to quantifying its temporal and spatial variability. Complementary to land-based monitoring networks, optical satellite observations can be used to derive spatially comprehensive information on snow cover extent. For understanding long-term changes in alpine snow cover extent, the data acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors mounted onboard the National Oceanic and Atmospheric Association (NOAA) and Meteorological Operational satellite (MetOp) platforms offer a unique source of information. In this paper, we present the first space-borne 1 km snow extent climatology for the Alpine region derived from AVHRR data over the period 1985-2011. The objective of this study is twofold: first, to generate a new set of cloud-free satellite snow products using a specific cloud gap-filling technique and second, to examine the spatiotemporal distribution of snow cover in the European Alps over the last 27 yr from the satellite perspective. For this purpose, snow parameters such as snow onset day, snow cover duration (SCD), melt-out date and the snow cover area percentage (SCA) were employed to analyze spatiotemporal variability of snow cover over the course of three decades. On the regional scale, significant trends were found toward a shorter SCD at lower elevations in the south-east and south-west. However, our results do not show any significant trends in the monthly mean SCA over the last 27 yr. This is in agreement with other research findings and may indicate a deceleration of the decreasing snow trend in the Alpine region. Furthermore, such data may provide spatially and temporally homogeneous snow information for comprehensive use in related research fields (i.e., hydrologic and economic applications) or can serve as a reference for climate models. © 2014 Author(s). CC Attribution 3.0 License.
学科领域	AVHRR; climate modeling; climatology; cryosphere; data set; MetOp; monitoring system; NOAA satellite; satellite imagery; snow cover; trend analysis; Alps
语种	英语
scopus关键词	AVHRR; climate modeling; climatology; cryosphere; data set; MetOp; monitoring system; NOAA satellite; satellite imagery; snow cover; trend analysis; Alps
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/120168
作者单位	Institute of Geography and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland; WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland
推荐引用方式 GB/T 7714	Hüsler F.,Jonas T.,Riffler M.,et al. A satellite-based snow cover climatology (1985-2011) for the European Alps derived from AVHRR data[J],2014,8(1).
APA	Hüsler F.,Jonas T.,Riffler M.,Musial J.P.,&Wunderle S..(2014).A satellite-based snow cover climatology (1985-2011) for the European Alps derived from AVHRR data.Cryosphere,8(1).
MLA	Hüsler F.,et al."A satellite-based snow cover climatology (1985-2011) for the European Alps derived from AVHRR data".Cryosphere 8.1(2014).