DOI: 10.1038/ngeo2517
论文题名: Two distinct influences of Arctic warming on cold winters over North America and East Asia
作者: Kug J.-S. ; Jeong J.-H. ; Jang Y.-S. ; Kim B.-M. ; Folland C.K. ; Min S.-K. ; Son S.-W.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2015
卷: 8, 期: 10 起始页码: 759
结束页码: 762
语种: 英语
Scopus关键词: anticyclone
; climate effect
; climate modeling
; climate variation
; extreme event
; midlatitude environment
; seasonal variation
; warming
; winter
; Arctic Ocean
; Barents Sea
; Chukchi Sea
; East Siberian Sea
; Far East
; Kara Sea
; North America
英文摘要: Arctic warming has sparked a growing interest because of its possible impacts on mid-latitude climate. A number of unusually harsh cold winters have occurred in many parts of East Asia and North America in the past few years, and observational and modelling studies have suggested that atmospheric variability linked to Arctic warming might have played a central role. Here we identify two distinct influences of Arctic warming which may lead to cold winters over East Asia or North America, based on observational analyses and extensive climate model results. We find that severe winters across East Asia are associated with anomalous warmth in the Barents-Kara Sea region, whereas severe winters over North America are related to anomalous warmth in the East Siberian-Chukchi Sea region. Each regional warming over the Arctic Ocean is accompanied by the local development of an anomalous anticyclone and the downstream development of a mid-latitude trough. The resulting northerly flow of cold air provides favourable conditions for severe winters in East Asia or North America. These links between Arctic and mid-latitude weather are also robustly found in idealized climate model experiments and CMIP5 multi-model simulations. We suggest that our results may help improve seasonal prediction of winter weather and extreme events in these regions. © 2015 Macmillan Publishers Limited. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106154
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea; Department of Oceanography, Chonnam National University, Gwangju, South Korea; Korea Polar Research Institute, Incheon, South Korea; Met Office Hadley Centre, Exeter, United Kingdom; Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea
Recommended Citation:
Kug J.-S.,Jeong J.-H.,Jang Y.-S.,et al. Two distinct influences of Arctic warming on cold winters over North America and East Asia[J]. Nature Geoscience,2015-01-01,8(10)