Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031085 |
Ural Blocking Driving Extreme Arctic Sea Ice Loss, Cold Eurasia, and Stratospheric Vortex Weakening in Autumn and Early Winter 2016-2017 | |
Tyrlis, Evangelos1; Manzini, Elisa1; Bader, Juergen1,2; Ukita, Jinro3; Nakamura, Hisashi4; Matei, Daniela1 | |
2019-11-14 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:21页码:11313-11329 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Norway; Japan |
英文摘要 | This study investigates the dynamics that led to the repeated cold surges over midlatitude Eurasia, exceptionally warm conditions and sea ice loss over the Arctic, and the unseasonable weakening of the stratospheric polar vortex in autumn and early winter 2016-2017. We use ERA-Interim reanalysis data and COBE sea ice and sea surface temperature observational data to trace the dynamical pathways that caused these extreme phenomena. Following abnormally low sea ice conditions in early autumn over the Pacific sector of the Arctic basin, blocking anticyclones became dominant over Eurasia throughout autumn. Ural blocking (UB) activity was four times above climatological levels and organized in several successive events. UB episodes played a key role in the unprecedented sea ice loss observed in late autumn 2016 over the Barents-Kara Seas and the weakening of the stratospheric vortex. Each blocking induced circulation anomalies that resulted in cold air advection to its south and warm advection to its north. The near-surface warming anomalies over the Arctic and cooling anomalies over midlatitude Eurasia varied in phase with the life cycles of UB episodes. The sea ice cover minimum over the Barents-Kara Seas in 2016 was not observed in late summer but rather in mid-November and December shortly after the two strongest UB episodes. Each UB episode drove intense upward flux of wave activity that resulted in unseasonable weakening of the stratospheric vortex in November. The surface impact of this weakening can be linked to the migration of blocking activity and cold spells toward Europe in early winter 2017. |
英文关键词 | Ural blocking Arctic sea ice loss midlatitude cold extremes stratospheric vortex weakening autumn 2016 |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496349900001 |
WOS关键词 | INCREASED QUASI STATIONARITY ; ROSSBY-WAVE-BREAKING ; PART II ; IMPACT ; AMPLIFICATION ; CYCLONE ; MODEL ; VARIABILITY ; PERSISTENCE ; ATMOSPHERE |
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/225771 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Max Planck Inst Meteorol, Hamburg, Germany; 2.Uni Res & Bjerknes Ctr Climate Res, Uni Climate, Bergen, Norway; 3.Niigata Univ, Dept Environm Sci, Niigata, Japan; 4.Univ Tokyo, Res Ctr Adv Sci & Technol, Tokyo, Japan |
推荐引用方式 GB/T 7714 | Tyrlis, Evangelos,Manzini, Elisa,Bader, Juergen,et al. Ural Blocking Driving Extreme Arctic Sea Ice Loss, Cold Eurasia, and Stratospheric Vortex Weakening in Autumn and Early Winter 2016-2017[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(21):11313-11329. |
APA | Tyrlis, Evangelos,Manzini, Elisa,Bader, Juergen,Ukita, Jinro,Nakamura, Hisashi,&Matei, Daniela.(2019).Ural Blocking Driving Extreme Arctic Sea Ice Loss, Cold Eurasia, and Stratospheric Vortex Weakening in Autumn and Early Winter 2016-2017.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(21),11313-11329. |
MLA | Tyrlis, Evangelos,et al."Ural Blocking Driving Extreme Arctic Sea Ice Loss, Cold Eurasia, and Stratospheric Vortex Weakening in Autumn and Early Winter 2016-2017".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.21(2019):11313-11329. |
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