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DOI | 10.1175/JCLI-D-17-0716.1 |
The Tropospheric Pathway of the ENSO-North Atlantic Teleconnection | |
Jimenez-Esteve, Bernat; Domeisen, Daniela I. V. | |
2018-06-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:11页码:4563-4584 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland |
英文摘要 | El Nino-Southern Oscillation (ENSO) exerts an influence on the North Atlantic-European (NAE) region. However, this teleconnection is nonlinear and nonstationary owing to the superposition and interaction of a multitude of influences on this region. The stratosphere is one of the major players in terms of the influence of the ENSO signal on this sector. Nevertheless, there are tropospheric dynamical links between the North Pacific and the North Atlantic that are clearly influenced by ENSO. This tropospheric pathway of ENSO to the NAE has received less attention. In view of this, the present study revisits the tropospheric pathway of ENSO to the North Atlantic using ECMWF reanalysis products. Anomalous propagation of transient and quasi-stationary waves across North America is analyzed with respect to their sensitivity to ENSO. Transient (quasi-stationary zonal waves 1-3) wave activity flux (WAF) from the Pacific to the Atlantic increases during El Nino (La Nina) conditions leading to a negative (positive) phase of the North Atlantic Oscillation (NAO). This response is observed from January to March for El Nino and only visible during February for La Nina events. However, the stratosphere strongly modulates this response. For El Nino (La Nina) conditions a weaker (stronger) stratospheric vortex tends to reinforce the negative (positive) NAO with the stratosphere and troposphere working in tandem, contributing to a stronger and more persistent tropospheric circulation response. These findings may have consequences for the prediction of the NAO during times with an inactive stratosphere. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432465200009 |
WOS关键词 | WAVE-ACTIVITY FLUX ; QUASI-GEOSTROPHIC EDDIES ; ICELANDIC LOW SEESAW ; VARYING BASIC FLOW ; TIME-MEAN FLOW ; EL-NINO ; ATMOSPHERIC CIRCULATION ; SOUTHERN-OSCILLATION ; INTERANNUAL SEESAW ; STRATOSPHERIC VARIABILITY |
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/19875 |
专题 | 气候变化 |
作者单位 | Swiss Fed Inst Technol, Inst Atmospher & Climate Sci, Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Jimenez-Esteve, Bernat,Domeisen, Daniela I. V.. The Tropospheric Pathway of the ENSO-North Atlantic Teleconnection[J]. JOURNAL OF CLIMATE,2018,31(11):4563-4584. |
APA | Jimenez-Esteve, Bernat,&Domeisen, Daniela I. V..(2018).The Tropospheric Pathway of the ENSO-North Atlantic Teleconnection.JOURNAL OF CLIMATE,31(11),4563-4584. |
MLA | Jimenez-Esteve, Bernat,et al."The Tropospheric Pathway of the ENSO-North Atlantic Teleconnection".JOURNAL OF CLIMATE 31.11(2018):4563-4584. |
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