Extreme temperature months in Rila mountain, Bulgaria

Nina Nikolova, Jocelin Laporte, Galina Tomova

Abstract


The air temperature is the main climatic parameter which gives important information about contemporary climate change. The increasing of the temperature and frequency of occurrence of extreme high temperatures during the recent years is one of the feature of climate which is associated with the global climate change. The present study aims to give the new light on the problem of the variability of air temperatures in the mountainous area in Bulgaria and in Rila Mountain in particular by the investigation of extreme temperatures months. Extreme temperature months are determined according to 10-th and 90-th percentiles of the distribution of monthly data. On the basis of the investigation of extreme temperature months during the period 1960-2012 the increase of warm and decrease of cold months are determined at annual level and also for summer-time and winter-time. The results show that the warming during the summer-time is clearly determined that in winter-time.

Keywords: extreme temperature months, threshold of 10-th and 90-th percentile, Rila Mountain

© 2018 Serbian Geographical Society, Belgrade, Serbia.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Serbia



Full Text:

PDF

References


Bozhkov, R. (1958). Unusually high maximum temperatures in December are Bulgaria. Hydrology and Meteorology, 1.

Brown, S.J., Caesar, J. & Ferro, C.A.T. (2008). Global changes in extreme daily temperatures since 1950. Journal of Geophysical Research – Atmospheres, 113, 11.

Caesar, J., Alexander, L. & Vose, R. (2006). Large-scale changes in observed daily maximum and minimum temperatures: creation and analysis of a new gridded data set. Journal of Geophysical Research – Atmospheres, 111, 10 DOI: 10.1029/2005JD006280

Chitu, E., Daniela Giosanu, D. & Mateescu, D. (2015). The Variability of Seasonal and Annual Extreme Temperature Trends of the Latest Three Decades in Romania. Agriculture and Agricultural Science Procedia 6, 429 – 437.

European Climate Assessment & Dataset project. Retrieved from: https://www.ecad.eu/

Glovnya, M. (1963). Rila. Sofia: Science and Art

IPCC (2001). Climate Change 2001: The Scientific Basis. Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change [Houghton, J.T.,Y. Ding, D.J. Griggs, M. Noguer, P.J. van der Linden, X. Dai, K. Maskell, and C.A. Johnson (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 881

IPCC (2007). Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Solomon, S., D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor and H.L. Miller (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 996

IPCC (2013). Summary for Policymakers. In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Stocker, T.F., D. Qin, G.-K. Plattner, M. Tignor, S.K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex and P.M. Midgley (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.

Klein Tank, A. M. G. & Können, G. P. (2003). Trends in Indices of Daily Temperature and Precipitation Extremes in Europe, 1946–99. Journal of Climate 16, 3665-3680.

Koleva, E. (1989). The natural and economic potential of the mountains in Bulgaria: Nature and resources. Vol. 1. Sofia: BAS

Nikolova, N. & Penev, D. (2007). Fluctuation of Extremely Cold and Warm Months in Bulgaria. Geographica Pannonica, 11, 19-21.

Pokladnıkova, H., Roznovsky, J. & Streda, T. (2008). Evaluation of the monthly air temperature extremity for the 1961-2007 period. Contributions to Geophysics and Geodesy, 38/4, 391-403.

Rebetez, M. & Reinhard, M. (2008). Monthly air temperature trends in Switzerland 1901-2000 and 1975-2004. Theoretical and Applied Climatology, 91, 1-4, 27-34.

Seneviratne, S. I., et al. (2012). Changes in climate extremes and their impacts on the natural physical environment. In: IPCC Special Report on Extremes, 109-230.

Stanev, S. (1955). On the temperature regime in Bulgaria. Studies of Hydro meteorological service, 4

Stoychev, K. (1978). The altitudinal zonality of certain climatic and hydrological elements in the Rila Mountain with regard to its landscape regionalization. Sofia University Year book, 72(2).

Stoychev, K. (1981). Rila – Nature and Resources. Sofia: Science and art.

Tishkov, H. (1976). Climate of the mountainous regions in Bulgaria. Sofia: BAS

Velev, S. (2010). Climate of Bulgaria. Sofia: Heron Press.


Refbacks

  • There are currently no refbacks.