DOI: 10.1002/joc.5733
论文题名: Extreme temperature events on the Iberian Peninsula: Statistical trajectory analysis and synoptic patterns
作者: Mohammed A.J. ; Alarcón M. ; Pino D.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 14 起始页码: 5305
结束页码: 5322
语种: 英语
英文关键词: back trajectories
; hot/cold events
; Iberian Peninsula
; principal component analysis
; synoptic patterns
; western Mediterranean
Scopus关键词: Lagrange multipliers
; Meteorology
; Trajectories
; Back trajectories
; hot/cold events
; Iberian Peninsula
; synoptic patterns
; Western Mediterranean
; Principal component analysis
; anthropogenic effect
; cold wave
; extreme event
; heat wave
; high temperature
; principal component analysis
; regional climate
; statistical analysis
; synoptic meteorology
; Atlantic Ocean
; Atlantic Ocean (North)
; Iberian Peninsula
; Mediterranean Sea
; Mediterranean Sea (West)
; Pyrenees
英文摘要: The occurrence of heat waves and cold spells has been receiving special attention in recent years due to their impact on human health, ecosystems and other aspects, such as the economy. The present work uses a Lagrangian approach to analyse the physical processes leading to temperature extremes in the Iberian Peninsula (IP) for the 20-year period 1994–2013. Principal component analysis has also been carried out to identify the associated synoptic scale configurations. Spatial pattern analysis shows that the highest temperatures during hot events are reached in the SW region and the lowest ones in the NE, while a latitudinal gradient of 26 K was obtained for the cold events, with the lowest values in the NE regions and the Pyrenees. Most of the extremes persisted between 1 and 3 days for both hot and cold events. Rather than meridional advection, the primary cause behind the occurrence of hot extremes seems to be progressive diabatic warming, which becomes accentuated in its final stage and is caused, on the one hand, by air masses with long residence times over the IP and, on the other hand, by recirculation processes during summer days of weak baric gradient. The air masses producing the extreme cold events have faster trajectories and mainly originate in north and northeast Europe, due to a relative low in the central Mediterranean and a blocking high in the North Atlantic and/or in northeast Europe. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116718
Appears in Collections: 气候减缓与适应
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作者单位: Departament de Física, Universitat Politècnica de Catalunya, Barcelona, Spain; Department of Atmospheric Sciences, College of Science, Al-Mustansiriya University, Baghdad, Iraq; Institute of Space Studies (IEEC-UPC), Barcelona, Spain
Recommended Citation:
Mohammed A.J.,Alarcón M.,Pino D.. Extreme temperature events on the Iberian Peninsula: Statistical trajectory analysis and synoptic patterns[J]. International Journal of Climatology,2018-01-01,38(14)