DOI: 10.1002/joc.5902
Scopus记录号: 2-s2.0-85057711584
论文题名: Spatiotemporal patterns of snow depth within the Swiss-Austrian Alps for the past half century (1961 to 2012) and linkages to climate change
作者: Schöner W. ; Koch R. ; Matulla C. ; Marty C. ; Tilg A.-M.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 3 起始页码: 1589
结束页码: 1603
语种: 英语
英文关键词: Alps
; climate change
; decadal variability
; homogenization
; mountain
; observational data analysis
; snow
; statistical methods
Scopus关键词: Atmospheric temperature
; Homogenization method
; Orthogonal functions
; Snow
; Snow melting systems
; Statistical methods
; Air temperature
; Air temperature changes
; Alps
; Decadal variability
; Empirical Orthogonal Function
; mountain
; Observational data
; Spatiotemporal patterns
; Climate change
英文摘要: Our current knowledge on multi-decadal to centennial changes of snow in different parts of the world is based largely on observations of snow depth and depth of snowfall from national weather and hydrographic services. Studies analysing these snow observations in the European Alps are predominantly based on national data and are therefore limited by their respective borders in the detection of robust, spatiotemporal snow trends. In order to overcome this limitation, data from Austria and Switzerland, which cover a substantial fraction of the Alps when taken together, are merged for this study (196 station-records). Additionally, it is the first time that such an analysis is based on homogenized data. Our homogenization study shows that, although the detection of breaks in snow depth series works quite well with the existing methods, further research is needed to adequately correct snow depth series at a daily resolution. Roughly, 70% (139 station-records) of the snow depth series could be homogenized and are used for further trend analysis. The findings concern seven climatologically different areas that are identified by a regionalization (using empirical orthogonal functions) using station records from 1961 to 2012. These regions share a high degree of inner similarity and outer separation, and the temporal trends detected are rather different across the Swiss-Austrian domain. Regions in the south show a clear decrease in the snow depth of up to −12 cm/decade on average, while those in the northeast are characterized by almost no change. The declining trend in the southern regions intensifies as altitude increases. Comparisons of these variations in depth changes with concurrent changes in air temperature and precipitation totals reveal a clear dichotomy with respect to elevation. Snow depths in low elevated areas are highly sensitive to air temperature changes, whereas those at high elevations strongly depend on alterations in precipitation totals. © 2018 The Authors. International Journal of Climatology published by John Wiley & Sons Ltd on behalf of the Royal Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116517
Appears in Collections: 全球变化的国际研究计划
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作者单位: Department of Geography and Regional Science, University of Graz, Graz, Austria; Zentralanstalt für Meteorologie und Geodynamik, Climate Research, Vienna, Austria; WSL Institute for Snow and Avalanche Research SLF, Permafrost and Snow Climatology, Davos, Switzerland; Department of Wind Energy, Technical University of Denmark, Roskilde, Denmark
Recommended Citation:
Schöner W.,Koch R.,Matulla C.,et al. Spatiotemporal patterns of snow depth within the Swiss-Austrian Alps for the past half century (1961 to 2012) and linkages to climate change[J]. International Journal of Climatology,2019-01-01,39(3)