Abstract
A study of snow statistics over the past 50 years at several climatological stations in the Swiss Alps has highlighted periods in which snow was either abundant or not. Periods with relative low snow amounts and duration are closely linked to the presence of persistent high surface pressure fields over the Alpine region during late Fall and in Winter. These high pressure episodes are accompanied by large positive temperature anomalies and low precipitation, both of which are unfavorable for snow accumulation during the Winter. The fluctuations of seasonal to annual pressure in the Alpine region is strongly correlated with anomalies of the North Atlantic Oscillation index, which is a measure of the strength of the westerly flow over the Atlantic. This implies that large-scale forcing, and not local or regional factors, plays a dominant role in controling the timing and amount of snow in the Alps, as evidenced by the abundance or dearth of snow over several consecutive years. Furthermore, since the mid-1980s, the length of the snow season and snow amount have substantially decreased, as a result of pressure fields over the Alps which have been far higher and more persistent than at any other time this century. A detailed analysis of a number of additional Alpine stations for the last 15 years shows that the sensitivity of the snow-pack to climatic fluctuations diminishes above 1750 m. In the current debate on anthropogenically-induced climatic change, this altitude is consistent with other studies and estimates of snow-pack sensitivity to past and projected future global warming.
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References
Abegg, B. and Froesch, R.: 1994, ‘Climate Change and Winter Tourism: Impact on Transport Companies in the Swiss Canton of Graubünden’, in Beniston, M. (ed.), Mountain Environments in Changing Climates, Routledge Publishing Company, London and New York, pp. 328–340.
Barry, R. G.: 1992c, ‘Mountain Climatology and Past and Potential Future Climatic Changes in Mountain Regions: A Review’, Mountain Research and Development 12, 71–86.
Baumgartner, M. E. and Apfl, G.: 1994, ‘Monitoring Snow Cover Variations in the Alps Using the Alpine Snow Cover Analysis System (ASCAS)’, in Beniston, M. (ed.), Mountain Environments in Changing Climates, Routledge Publishing Company, London and New York, pp. 108–120.
Beniston, M. (ed.): 1994, Mountain Environments in Changing Climates, Routledge Publishing Co., London and New York, p. 492.
Beniston, M., Rebetez, M., Giorgi, F., and Marinucci, M. R.: 1994, ‘An Analysis of Regional Climate Change in Switzerland’, Theor. and Appl. Clim. 49, 135–159.
Beniston, M., Rebetez, M.: 1995, ‘Regional Behavior of Minimum Temperatures in Switzerland for the Period 1979–1993’, Theor. and Appl. Clim. 53, 231–243.
Beniston, M., Fox, D. G. Adhikary, S., Andressen, R., Guisan, A., Holten, J., Innes, J., Maitima, J.,Price, M., and Tessier, L.: 1996, ‘The Impacts of Climate Change on Mountain Regions’, Second Assessment Report of the Intergovernmental Panel on Climate Change (IPCC),Chapter 5, Cambridge University Press, pp. 190–213.
Bradley, R. S. and Jones, R. D.: 1992, Climate Since AD 1500, Routledge Publishing Company, London and New York, p. 692.
Bultot, F.: 1992, ‘Repercussions of a CO2 Doubling on the Water Balance — a Case Study in Switzerland’, J. Hydrol. 137, 199–208.
Fitzharris, B. B.: 1989, ‘Impact of Climate Change on the Terrestrial Cryosphere in New Zealand’, Summary paper, Department of Geography, University of Otago, New Zealand.
Föhn, P.: 1991, ‘Les hivers de demain seront-ils blancs comme neige ou vert comme les prés?’, WSL/FNP (éd.), Argument de la Recherche 3, 3–12.
Giorgi, F.: 1990, ‘On the Simulation of Regional Climate Using a Limited Area Model Nested in a General Circulation Model’, J. Clim. 3, 941–963.
Giorgi, F., Marinucci, M. R., and Visconti, G.: 1992, ‘A 2 x CO2 Climate Change Scenario over Europe Generated Using a Limited Area Model Nested in a General Circulation Model. II: Climate Change’, J. Geophys. Res. 97, 10,011–10,028.
Gleick, P. H.: 1987, ‘Regional Hydrologic Consequences of Increases in Atmospheric CO2 and Other Trace Gases’, Clim. Change 10, 137–161.
Hewitt, M.: 1994, ‘Modeled Changes in Snow Cover in the Australian Alps under Enhanced Greenhouse Gas Concentrations’, Proc. International Symposium on Snow and Climate, Geneva, September 22–23, 1994.
Hurrell, J.: 1995, ‘Decadal Trends in the North Atlantic Oscillation Regional Temperatures and Precipitation’, Science 269, 676–679.
IPCC: 1990, Houghton, J. T., Jenkins, G. J., and Ephraums, J. J. (eds.), Intergovernmental Panel on Climate Change, Climate Change, The IPCC Scientific Assessment, Cambridge University Press, Cambridge, p. 365.
IPCC: 1996, Intergovernmental Panel on Climate Change, Climate Change, The IPCC Second Assessment Report,Working Groups I, II and III, Cambridge University Press, in press.
Kuhn, M.: 1989, ‘The Effects of Long-Term Warming on Alpine Snow and Ice’, in Rupke, J. and Boer
M. M. (eds.), Landscape Ecological Impact of Climate Change on Alpine Regions,Lunteren, The Netherlands.
Kushnir, Y.: 1994, Interdecadal Variation in North Atlantic Sea Surface Temperature and Associated Atmospheric Conditions’, J. Clim 7, 141–157.
Marinucci, M. R. and Giorgi, F.: 1992, ‘A 2 x CO2 Climate Change Scenario over Europe Generated Using a Limited Area Model Nested in a General Circulation Model. I: Present Day Simulation’, J. Geophys. Res. 97, 9,989–10,009.
Marinucci, M. R., Giorgi, F., Beniston, M., Wild, M., Tschuck, P., and Bernasconi, A.: 1995, ‘High Resolution Simulations of January and July Climate over the Western Alpine Region with a Nested Regional Modeling System’, Theor. and Appl. Clim. 51, 119–138.
Martin, E.: 1995: ‘Modélisation de la climatologie nivale des Alpes françaises’, PhD Dissertation, Université Paul Sabatier, Toulouse, France, p. 232.
Martin, E., Brun, E., and Durand, Y.: 1994, ‘Sensitivity of the French Alps Snow Cover to the Variation of Climatic Variables’, Annales Geophysicae (in press).
Moses, T., Kiladis, G. N., Diaz, H. F., and Barry, R. G.: 1987, ‘Characteristics and Frequency Reversals in Mean Sea-Level Pressure in the North Atlantic Sector and their Relationships to Long-Term Temperature Trends’, J. Climatol. 7, 13–30.
Price, M. F.: 1994, ‘Should Mountain Communities Be Concerned about Climate Change?’, in Beniston, M. (ed.), Mountain Environments in Changing Climates, Routledge Publishing Company, London and New York, pp. 431–451.
Rebetez, M.: 1996, ‘Public Expectation as an Element of Human Perception of Climate Change’, Clim. Change (in press).
Slatyer, R. O., Cochrane, P. M., and Galloway, R. W.: 1984, ‘Duration and Extent of Snow Cover in the Snowy Mountains and a Comparison with Switzerland’, Search 15, 327–331.
Wanner, H.: 1994, ‘The Atlantic-European Circulation Pattern and Its Relevance for Climate Change in the Alps’, Report 1/94 to the Swiss National Science Foundation, 15 pp.
Witmer, U., Filliger, R, Kunz, S., and Kung, R: 1986, Erfassung, Bearbeitung und Kartiering von Schneedaten in der Schweiz, Geographica Bernensia G25, University of Bern, Switzerland, 215 pp.
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Beniston, M. (1997). Variations of Snow Depth and Duration in the Swiss Alps Over the Last 50 Years: Links to Changes in Large-Scale Climatic Forcings. In: Diaz, H.F., Beniston, M., Bradley, R.S. (eds) Climatic Change at High Elevation Sites. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8905-5_3
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DOI: https://doi.org/10.1007/978-94-015-8905-5_3
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