DOI: 10.1175/JCLI-D-16-0518.1
Scopus记录号: 2-s2.0-85008684177
论文题名: Connecting atmospheric blocking to European temperature extremes in spring
作者: Brunner L. ; Hegerl G.C. ; Steiner A.K.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 2 起始页码: 585
结束页码: 594
语种: 英语
Scopus关键词: Climate change
; Blocking
; Climate variability
; Europe
; Extreme events
; Spring season
; Surface temperatures
; Atmospheric temperature
; air temperature
; atmospheric blocking
; climate change
; climate variation
; extreme event
; seasonal variation
; spring (season)
; surface temperature
; vegetation
; Atlantic Ocean
; Atlantic Ocean (Northeast)
; Europe
; Scandinavia
英文摘要: Atmospheric blocking is an important contributor to European temperature variability. It can trigger cold and warm spells, which is of specific relevance in spring because vegetation is particularly vulnerable to extreme temperatures in the growing season. The spring season is investigated as a transition period from predominant connections of blocking with cold spells in winter to predominant connections of blocking with warm spells in summer. Extreme temperatures are termed cold or warm spells if temperature stays outside the 10th to 90th percentile range for at least six consecutive days. Cold and warm spells in Europe over 1979-2014 are analyzed in observations from the European daily high-resolution gridded dataset (E-OBS) and the connection to blocking is examined in geopotential height fields from ERA-Interim. A highly significant link between blocking and cold and warm spells is found that changes during spring. Blocking over the northeastern Atlantic and Scandinavia is correlated with the occurrence of cold spells in Europe, particularly early in spring, whereas blocking over central Europe is associated with warmer conditions, particularly from March onward. The location of the block also impacts the spatial distribution of temperature extremes. More than 80% of cold spells in southeastern Europe occur during blocking whereas warm spells are correlated with blocking mainly in northern Europe. Over the analysis period, substantial interannual variability is found but also a decrease in cold spells and an increase in warm spells. The long-term change to a warmer climate holds the potential for even higher vulnerability to spring cold extremes. © 2017 American Meteorological Society. 资助项目: ERC, H2020 European Research Council
; FWF, Austrian Science Fund
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49761
Appears in Collections: 气候变化事实与影响
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作者单位: Wegener Center for Climate and Global Change (WEGC), Institute for Geophysics, Astrophysics, University of Graz, Graz, Austria; Meteorology/Institute of Physics, University of Graz, Graz, Austria; Fonds zur Förderung der wissenschaftlichen Forschung-Doktoratskolleg (FWF-DK) Climate Change, University of Graz, Graz, Austria; School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom
Recommended Citation:
Brunner L.,Hegerl G.C.,Steiner A.K.. Connecting atmospheric blocking to European temperature extremes in spring[J]. Journal of Climate,2017-01-01,30(2)