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Spatial Variability of Daily Extreme Surface Air Temperatures Over Europe During 1950–2009

  • A. Gkikas
  • E. Mastrapostoli
  • F. Stamatoukou
  • B. D. Katsoulis
  • N. Hatzianastassiou
Conference paper
Part of the Springer Atmospheric Sciences book series (SPRINGERATMO)

Abstract

The spatial variability of extreme surface air temperature has been studied across Europe over the 60-year period 1950–2009. Data of daily maximum and minimum temperature, Tmax and Tmin, respectively, taken from the European Climate Assessment & Dataset (ECA&D), were used to investigate their spatial variability, through parameters, DTi = [max(Ti) − min(Ti)] and STDV(Ti), standard deviations, where i = max,min, expressing the absolute and overall spatial variability, respectively. The data are measurements from 181 stations uniformly distributed over Europe with adequate availability. Our results indicate that there is a significant spatial variability of daily Tmax and Tmin values over Europe. The computed values of DTmax,min range from about 17°C to 58°C, whereas those of STDV(Tmax,min) range from about 3.0–11.5°C, depending on the year and season. It is found that the spatial variability of maximum temperatures over Europe has decreased from 1950 to 2009, as indicated by the computed values D(DTmax) = −0.008°C and D[STDV(Tmax)] = −0.003°C. Similarly, the overall spatial variability of minimum temperatures over Europe has decreased as well, as indicated by our computed values D(DTmin) = −0.016°C and D[STDV(Tmin)] = −0.006°C. The seasonal analysis, however, reveals contrasting tendencies, with decreasing D(DTi) and D[STDV(Ti)] in winter and spring and increasing in summer.

Keywords

Spatial Variability Extreme Temperature Daily Minimum Temperature Extreme Temperature Event European Temperature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Brown SJ, Caesar J, Ferro CAT (2008) Global changes in extreme daily temperatures since 1950. J Geophys Res 113:D05115. doi: 10.1029/2006JD008091 CrossRefGoogle Scholar
  2. Haylock MR, Hofstra N, Klein Tank AMG, Klok EJ, Jones PD, New M (2008) A European daily high-resolution gridded dataset of surface temperature and precipitation for 1950–2006. J Geophys Res 113:D20119. doi: 10.1029/2008JD010201 CrossRefGoogle Scholar
  3. Intergovernmental Panel on Climate Change (IPCC) (2007) Climate change 2007: the physical science basis. Summary for policymakers, Paris, February 2007Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • A. Gkikas
    • 1
  • E. Mastrapostoli
    • 1
  • F. Stamatoukou
    • 1
  • B. D. Katsoulis
    • 1
  • N. Hatzianastassiou
    • 1
  1. 1.Laboratory of Meteorology, Physics DepartmentUniversity of IoanninaIoanninaGreece

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