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DOI | 10.1175/JCLI-D-18-0097.1 |
Intraseasonal Effects of El Nino-Southern Oscillation on North Atlantic Climate | |
Ayarzaguena, Blanca1,2,3; Ineson, Sarah4; Dunstone, Nick J.4; Baldwin, Mark P.1; Scaife, Adam A.1,4 | |
2018-11-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:21页码:8861-8873 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Spain |
英文摘要 | It is well established that El Nino-Southern Oscillation (ENSO) impacts the North Atlantic-European (NAE) climate, with the strongest influence in winter. In late winter, the ENSO signal travels via both tropospheric and stratospheric pathways to the NAE sector and often projects onto the North Atlantic Oscillation. However, this signal does not strengthen gradually during winter, and some studies have suggested that the ENSO signal is different between early and late winter and that the teleconnections involved in the early winter subperiod are not well understood. In this study, we investigate the ENSO teleconnection to NAE in early winter (November-December) and characterize the possible mechanisms involved in that teleconnection. To do so, observations, reanalysis data and the output of different types of model simulations have been used. We show that the intraseasonal winter shift of the NAE response to ENSO is detected for both El Nino and La Nina and is significant in both observations and initialized predictions, but it is not reproduced by free-running Coupled Model Intercomparison Project phase 5 (CMIP5) models. The teleconnection is established through the troposphere in early winter and is related to ENSO effects over the Gulf of Mexico and Caribbean Sea that appear in rainfall and reach the NAE region. CMIP5 model biases in equatorial Pacific ENSO sea surface temperature patterns and strength appear to explain the lack of signal in the Gulf of Mexico and Caribbean Sea and, hence, their inability to reproduce the intraseasonal shift of the ENSO signal over Europe. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000450855400003 |
WOS关键词 | EARTH SYSTEM MODEL ; ENSO TELECONNECTION ; TROPICAL PACIFIC ; COUPLED MODEL ; STRATOSPHERE ; VARIABILITY ; PATHWAY ; 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/20277 |
专题 | 气候变化 |
作者单位 | 1.Univ Exeter, Dept Math, Exeter, Devon, England; 2.Univ Complutense Madrid, Dept Fis Tierra & Astrofis, Madrid, Spain; 3.Univ Complutense Madrid, CSIC, Inst Geociencias, Madrid, Spain; 4.Met Off Hadley Ctr, Exeter, Devon, England |
推荐引用方式 GB/T 7714 | Ayarzaguena, Blanca,Ineson, Sarah,Dunstone, Nick J.,et al. Intraseasonal Effects of El Nino-Southern Oscillation on North Atlantic Climate[J]. JOURNAL OF CLIMATE,2018,31(21):8861-8873. |
APA | Ayarzaguena, Blanca,Ineson, Sarah,Dunstone, Nick J.,Baldwin, Mark P.,&Scaife, Adam A..(2018).Intraseasonal Effects of El Nino-Southern Oscillation on North Atlantic Climate.JOURNAL OF CLIMATE,31(21),8861-8873. |
MLA | Ayarzaguena, Blanca,et al."Intraseasonal Effects of El Nino-Southern Oscillation on North Atlantic Climate".JOURNAL OF CLIMATE 31.21(2018):8861-8873. |
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