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ANALYSIS OF THE VARIABILITY OF THE WINTER PRECIPITATIONS AND TEMPERATURES IN TWO MOUNTAIN REGIONS OF BULGARIA
Abstract
Snow cover is an indicator of the fluctuating climate, resulting from the change in the regime of winter precipitations and air temperatures. Our previous study has revealed significant decreasing of the snow cover in the high altitudes of Vitosha mountain. The current sturdy is now focused on these two meteorological variable - the type and amount of the winter precipitations and the seasonal change of the air temperature. Monthly and seasonal values of precipitation amounts, number of days with different type of precipitation and mean air temperature from 6 meteorological stations in Vitosha and Stara planina have been used in this survey. The main period of investigation is 1960-2021 and the stations altitudes range from 1000 up to 2376 m. Statistical analysis is performed in order to assess the variability and possible differences in the investigated characteristics from long-term data series for two main climatological periods 1961-90 and 1991-2020. Statistically significant decreasing tendencies in the precipitation amounts have been discovered for all stations. Increasing trend of the mean seasonal air temperature is also observed, however manifestly only for the highest regions where remarkable rising tendency could be determined in the beginning of the 1990-es. Number of days with snowfalls also shows declining behavior in agreement with the general precipitation amount tendency. Recently increasing days with rain could be find out only in the high altitude regions of Stara planina. This investigation is part of a common project for investigation of the current variability of the snow cover and winter precipitations in the mountain regions of Austria and Bulgaria and is funded by the Bulgarian National Science Fund and the Austria's Agency for Education and Internationalisation in the call of the bilateral program Scientific and Technological Cooperation between both countries.
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References11
Beniston, M., Rebetez, M., Giorgi, F., and Marinucci,M. R., 1994, �An Analysis of Regional Climate Change in Switzerland�, Theor. Appl. Clim. 49, 135�159. DOI: 10.1007/bf00865530
Beniston, M. and Rebetez, M., 1996, Regional Behavior of Minimum Temperatures in Switzerland for the Period 1979�1993�, Theor. Appl. Clim. 53, 231�243. DOI: 10.1007/bf00871739
Giorgi, F. and Mearns, L. O., 1991, Approaches to the Simulation of Regional Climate Change, Rev. Geophys. 29, 191�216. DOI: 10.1029/90rg02636
Katz, R. W. and Brown, B. G., 1992, Extreme Events in a Changing Climate: Variability is More Important than Averages, Clim. Change 21, 289�302. DOI: 10.1007/bf00139728
IPCC: 1996,Watson, R. T., Zinyowera, M., and Moss, R. H. (eds.), Climate Change 1995, The IPCC Second Assessment Report, Cambridge University Press, Cambridge and New York, p. 862.
Beniston M., 1997b, Variations in snow depth and duration in the Swiss Alps over the last 50 years; links to changes in the large scale climatic forcings. Climatic Change 36: 281�300 DOI: 10.1007/978-94-015-8905-5_3
Beniston, M. and Rebetez, M., 1997, Shifts in Extremes in Relation to Changes in Mean Climate. Investigations of Observed and Simulated Climatological Data in the Swiss Alpine Region, J.Clim.,
Beniston M., H.F. Diaz and R. S. Bradley Climatic Change at High Elevation Sites: An overview, Climatic Change 36: 233�251, 1997. DOI: 10.1023/a:1005380714349
Uhlmann, B., St. Goyette and M. Beniston, 2009, Sensitivity analysis of snow patterns in Swiss ski resorts to shifts in temperature, precipitation and humidity under conditions of climate change, Int. J. Climatol. 29: 1048�1055 DOI: 10.1002/joc.1786
Beniston, M., F. Keller, B. Koffi, and S. Goyette, 2003, Estimates of snow accumulation and volume in the Swiss Alps under changing climatic conditions, Theor. Appl. Climatol., 76, 125�140. DOI: 10.1007/s00704-003-0016-5
Beniston M., B. Uhlmann, St. Goyettea and J. I. Lopez-Morenob, 2011, Will snowabundant winters still exist in the Swiss Alps in an enhanced greenhouse climate?, Int. J. Climatol. 31: 1257�1263 DOI: 10.1002/joc.2151
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