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DOI | 10.1002/joc.6225 |
Effects of the tropospheric large-scale circulation on European winter temperatures during the period of amplified Arctic warming | |
Vihma, Timo1; Graversen, Rune2; Chen, Linling3; Handorf, Doerthe4; Skific, Natasa5; Francis, Jennifer A.6; Tyrrell, Nicholas1; Hall, Richard7,8; Hanna, Edward7,8; Uotila, Petteri9; Dethloff, Klaus4; Karpechko, Alexey Y.1; Bjornsson, Halldor10; Overland, James E.11 | |
2019-08-11 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Finland; Norway; Germany; USA; Iceland |
英文摘要 | We investigate factors influencing European winter (DJFM) air temperatures for the period 1979-2015 with the focus on changes during the recent period of rapid Arctic warming (1998-2015). We employ meteorological reanalyses analysed with a combination of correlation analysis, two pattern clustering techniques, and back-trajectory airmass identification. In all five selected European regions, severe cold winter events lasting at least 4 days are significantly correlated with warm Arctic episodes. Relationships during opposite conditions of warm Europe/cold Arctic are also significant. Correlations have become consistently stronger since 1998. Large-scale pattern analysis reveals that cold spells are associated with the negative phase of the North Atlantic Oscillation (NAO-) and the positive phase of the Scandinavian (SCA+) pattern, which in turn are correlated with the divergence of dry-static energy transport. Warm European extremes are associated with opposite phases of these patterns and the convergence of latent heat transport. Airmass trajectory analysis is consistent with these findings, as airmasses associated with extreme cold events typically originate over continents, while warm events tend to occur with prevailing maritime airmasses. Despite Arctic-wide warming, significant cooling has occurred in northeastern Europe owing to a decrease in adiabatic subsidence heating in airmasses arriving from the southeast, along with increased occurrence of circulation patterns favouring low temperature advection. These dynamic effects dominated over the increased mean temperature of most circulation patterns. Lagged correlation analysis reveals that SCA- and NAO+ are typically preceded by cold Arctic anomalies during the previous 2-3 months, which may aid seasonal forecasting. |
英文关键词 | Arctic European weather North Atlantic oscillation Scandinavian pattern subsidence heating teleconnections |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000480498400001 |
WOS关键词 | ATLANTIC CLIMATE VARIABILITY ; STRATOSPHERIC POLAR VORTEX ; SEA-ICE REDUCTION ; ATMOSPHERIC CIRCULATION ; NORTH-ATLANTIC ; MIDLATITUDE WEATHER ; EXTREME WEATHER ; AMPLIFICATION ; REGIMES ; IMPACT |
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/185947 |
专题 | 气候变化 |
作者单位 | 1.Finnish Meteorol Inst, POB 503,Erik Pahnenin Aukio 1, FIN-00101 Helsinki, Finland; 2.Univ Tromso, Dept Phys & Technol, Tromso, Norway; 3.Nansen Environm & Remote Sensing Ctr, Bergen, Norway; 4.Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Potsdam, Germany; 5.Rutgers State Univ, Dept Marine & Coastal Sci, New Brunswick, NJ USA; 6.Woods Hole Res Ctr, Falmouth, MA USA; 7.Univ Lincoln, Sch Geog, Oakland, CA USA; 8.Univ Lincoln, Lincoln Ctr Water & Planetary Hlth, Oakland, CA USA; 9.Univ Helsinki, Atmospher & Earth Syst Res INAR Phys, Helsinki, Finland; 10.Iceland Meteorol Off, Reykjavik, Iceland; 11.NOAA, Pacific Marine Environm Lab, 7600 Sand Point Way Ne, Seattle, WA 98115 USA |
推荐引用方式 GB/T 7714 | Vihma, Timo,Graversen, Rune,Chen, Linling,et al. Effects of the tropospheric large-scale circulation on European winter temperatures during the period of amplified Arctic warming[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019. |
APA | Vihma, Timo.,Graversen, Rune.,Chen, Linling.,Handorf, Doerthe.,Skific, Natasa.,...&Overland, James E..(2019).Effects of the tropospheric large-scale circulation on European winter temperatures during the period of amplified Arctic warming.INTERNATIONAL JOURNAL OF CLIMATOLOGY. |
MLA | Vihma, Timo,et al."Effects of the tropospheric large-scale circulation on European winter temperatures during the period of amplified Arctic warming".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2019). |
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