DOI: 10.1007/s00382-015-2942-1
Scopus记录号: 2-s2.0-84951746629
论文题名: Precipitation extremes in the Mediterranean region and associated upper-level synoptic-scale flow structures
作者: Toreti A. ; Giannakaki P. ; Martius O.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 47, 期: 2017-05-06 起始页码: 1925
结束页码: 1941
语种: 英语
英文关键词: Mediterranean
; Potential vorticity
; Precipitation extremes
英文摘要: A non-stationary analysis of daily precipitation extremes over the Mediterranean region and the associated upper-level atmospheric dynamics is presented for autumn, winter and spring. An Extreme Value Theory approach is applied to identify homogeneous areas in terms of precipitation extremes and to characterise the spatio-temporal behaviour of precipitation extremes. Results reveal a high spatial variability of extremes in the region as a whole, while the eastern Mediterranean shows a lower variability compared to the western part. The temporal variability of the estimated 5-year return levels also varies significantly across the basin especially in autumn. The synoptic-scale flow structures associated with these extreme events are then investigated. Significant upper-level flow anomalies in the form of troughs and cut-offs are found for all regions/seasons. Moreover, in many areas the associated low-level flow is directed against the local topography pointing to the relevant role of orographic lifting. Finally, significant precursor signals, 2–3 days before the events, are identified for most of the areas. © 2015, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53544
Appears in Collections: 过去全球变化的重建
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作者单位: European Commission, Joint Research Centre, Ispra, Italy; Institute of Geography, Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
Recommended Citation:
Toreti A.,Giannakaki P.,Martius O.. Precipitation extremes in the Mediterranean region and associated upper-level synoptic-scale flow structures[J]. Climate Dynamics,2016-01-01,47(2017-05-06)