A satellite-based snow cover climatology (1985–2011) for the European Alps derived from AVHRR data

Hüsler, Fabia; Jonas, T.; Riffler, Michael; Musial, Jan Pawel; Wunderle, Stefan (2014). A satellite-based snow cover climatology (1985–2011) for the European Alps derived from AVHRR data. The Cryosphere, 8(1), pp. 73-90. Copernicus Publications 10.5194/tc-8-73-2014

[img]
Preview
Text
tc-8-73-2014.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (9MB) | Preview

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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geography > Physical Geography > Unit Remote Sensing
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Institute of Geography

UniBE Contributor:

Hüsler, Fabia; Riffler, Michael; Musial, Jan Pawel and Wunderle, Stefan

Subjects:

900 History > 910 Geography & travel
500 Science > 550 Earth sciences & geology

ISSN:

1994-0424

Publisher:

Copernicus Publications

Language:

English

Submitter:

Monika Wälti-Stampfli

Date Deposited:

15 Feb 2014 15:04

Last Modified:

27 Aug 2015 11:05

Publisher DOI:

10.5194/tc-8-73-2014

BORIS DOI:

10.7892/boris.40787

URI:

https://boris.unibe.ch/id/eprint/40787

Actions (login required)

Edit item Edit item
Provide Feedback