DOI: 10.1007/s00382-017-3884-6
Scopus记录号: 2-s2.0-85028996689
论文题名: Atmospheric conditions and weather regimes associated with extreme winter dry spells over the Mediterranean basin
作者: Raymond F. ; Ullmann A. ; Camberlin P. ; Oueslati B. ; Drobinski P.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-11-12 起始页码: 4437
结束页码: 4453
语种: 英语
英文关键词: Atmospheric conditions
; Extreme dry spells
; HyMeX
; Mediterranean
; Weather regimes
; Wet season
Scopus关键词: climate change
; climate conditions
; drought
; environmental impact
; extreme event
; precipitation (climatology)
; water vapor
; wet season
; winter
; Levant
; Mediterranean Region
; Mediterranean Sea
英文摘要: Very long dry spell events occurring during winter are natural hazards to which the Mediterranean region is extremely vulnerable, because they can lead numerous impacts for environment and society. Four dry spell patterns have been identified in a previous work. Identifying the main associated atmospheric conditions controlling the dry spell patterns is key to better understand their dynamics and their evolution in a changing climate. Except for the Levant region, the dry spells are generally associated with anticyclonic blocking conditions located about 1000 km to the Northwest of the affected area. These anticyclonic conditions are favourable to dry spell occurrence as they are associated with subsidence of cold and dry air coming from boreal latitudes which bring low amount of water vapour and non saturated air masses, leading to clear sky and absence of precipitation. These extreme dry spells are also partly related to the classical four Euro-Atlantic weather regimes are: the two phases of the North Atlantic Oscillation, the Scandinavian “blocking” or “East-Atlantic”, and the “Atlantic ridge”. Only the The “East-Atlantic”, “Atlantic ridge” and the positive phase of the North Atlantic Oscillation are frequently associated with extremes dry spells over the Mediterranean basin but they do not impact the four dry spell patterns equally. Finally long sequences of those weather regimes are more favourable to extreme dry spells than short sequences. These long sequences are associated with the favourable prolonged and reinforced anticyclonic conditions. © 2017, Springer-Verlag GmbH Germany. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109277
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Centre de Recherches de Climatologie, Biogéosciences, Université de Bourgogne Franche-Comté, Dijon, France; LSCE/IPLS, Laboratoire CEA/CNRS/UVSQ, Gif/Yvette, France; Laboratoire de Météorologie Dynamique Institut Pierre Simon Laplace, CNRS, École Polytechnique Université Pierre et Marie Curie, Palaiseau, Paris, France
Recommended Citation:
Raymond F.,Ullmann A.,Camberlin P.,et al. Atmospheric conditions and weather regimes associated with extreme winter dry spells over the Mediterranean basin[J]. Climate Dynamics,2018-01-01,50(2018-11-12)