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Advances in Geosciences An open-access journal for refereed proceedings and special publications
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Volume 14 | Copyright
Adv. Geosci., 14, 243-249, 2008
https://doi.org/10.5194/adgeo-14-243-2008
© Author(s) 2008. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  10 Apr 2008

10 Apr 2008

Relationships of surface air temperature anomalies over Europe to persistence of atmospheric circulation patterns conducive to heat waves

J. Kyselý and R. Huth J. Kyselý and R. Huth
  • Institute of Atmospheric Physics AS CR, Prague, Czech Republic

Abstract. Heat waves are among natural hazards with the most severe consequences for human society, including pronounced mortality impacts in mid-latitudes. Recent studies have hypothesized that the enhanced persistence of atmospheric circulation may affect surface climatic extremes, mainly the frequency and severity of heat waves. In this paper we examine relationships between the persistence of the Hess-Brezowsky circulation types conducive to summer heat waves and air temperature anomalies at stations over most of the European continent. We also evaluate differences between temperature anomalies during late and early stages of warm circulation types in all seasons. Results show that more persistent circulation patterns tend to enhance the severity of heat waves and support more pronounced temperature anomalies. Recent sharply rising trends in positive temperature extremes over Europe may be related to the greater persistence of the circulation types, and if similar changes towards enhanced persistence affect other mid-latitudinal regions, analogous consequences and implications for temperature extremes may be expected.

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