GSTDTAP  > 气候变化
DOI10.1007/s00382-017-3620-2
European temperature responses to blocking and ridge regional patterns
Sousa, Pedro M.1; Trigo, Ricardo M.1; Barriopedro, David2,3; Soares, Pedro M. M.1; Santos, Joao A.4
2018
发表期刊CLIMATE DYNAMICS
ISSN0930-7575
EISSN1432-0894
出版年2018
卷号50页码:457-477
文章类型Article
语种英语
国家Portugal; Spain
英文摘要

Blocking occurrence and its impacts on European temperature have been studied in the last decade. However, most previous studies on blocking impacts have focused on winter only, disregarding its fingerprint in summer and differences with other synoptic patterns that also trigger temperature extremes. In this work, we provide a clear distinction between high-latitude blocking and sub-tropical ridges occurring in three sectors of the Euro-Atlantic region, describing their climatology and consequent impacts on European temperature during both winter and summer. Winter blocks (ridges) are generally associated to colder (warmer) than average conditions over large regions of Europe, in some areas with anomalies larger than 5 degrees C, particularly for the patterns occurring in the Atlantic and Central European sectors. During summer, there is a more regional response characterized by above average temperature for both blocking and ridge patterns, especially those occurring in continental areas, although negative temperature anomalies persist in southernmost areas during blocking. An objective analysis of the different forcing mechanisms associated to each considered weather regime has been performed, quantifying the importance of the following processes in causing the temperature anomalies: horizontal advection, vertical advection and diabatic heating. While during winter advection processes tend to be more relevant to explain temperature responses, in summer radiative heating under enhanced insolation plays a crucial role for both blocking and ridges. Finally, the changes in the distributions of seasonal temperature and in the frequencies of extreme temperature indices were also examined for specific areas of Europe. Winter blocking and ridge patterns are key drivers in the occurrence of regional cold and warm extreme temperatures, respectively. In summer, they are associated with substantial changes in the frequency of extremely warm days, but with different signatures in southern Europe. We conclude that there has been some misusage of the traditional blocking definition in the attribution of extreme events.


英文关键词Blocking Ridges Temperature Europe Extremes Synoptic meteorology
领域气候变化
收录类别SCI-E
WOS记录号WOS:000422908700029
WOS关键词EXTREME SUMMER TEMPERATURES ; ATMOSPHERIC BLOCKING ; COLD ; CIRCULATION ; HEATWAVES ; MODEL ; MECHANISMS ; REANALYSES ; MORTALITY ; IMPACTS
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/35971
专题气候变化
作者单位1.Univ Lisbon, IDL, Fac Ciencias, P-1749016 Lisbon, Portugal;
2.Univ Complutense Madrid, Fac Ciencias Fis, Dept Fis Tierra 2, Madrid, Spain;
3.UCM, CSIC, Inst Geociencias IGEO, Madrid, Spain;
4.Univ Tras Os Montes & Alto Douro, Ctr Res & Technol Agroenvironm & Biol Sci, CITAB, UTAD, Vila Real, Portugal
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GB/T 7714
Sousa, Pedro M.,Trigo, Ricardo M.,Barriopedro, David,et al. European temperature responses to blocking and ridge regional patterns[J]. CLIMATE DYNAMICS,2018,50:457-477.
APA Sousa, Pedro M.,Trigo, Ricardo M.,Barriopedro, David,Soares, Pedro M. M.,&Santos, Joao A..(2018).European temperature responses to blocking and ridge regional patterns.CLIMATE DYNAMICS,50,457-477.
MLA Sousa, Pedro M.,et al."European temperature responses to blocking and ridge regional patterns".CLIMATE DYNAMICS 50(2018):457-477.
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