Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0130.1 |
Afro-Eurasian Intermediate-Frequency Teleconnection and Modulation by ENSO | |
He, Shan; Yang, Song1; Lu, Mengmeng; Li, Zhenning | |
2018-10-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:19页码:8121-8139 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The Afro-Eurasian intermediate-frequency atmospheric teleconnection conveys meteorological signals zonally, leads to various atmospheric variations, and causes extreme events along its path. This study, aimed at demonstrating the characteristics of the teleconnection, reveals that the teleconnection accounts for nearly half of the atmospheric variability and significantly influences different meteorological fields. With the propagation of signals associated with the teleconnection, local weather varies from prolonged dry and warm days to extended wet and cold days. El Nino-Southern Oscillation (ENSO) modulates the interannual variation of the teleconnection: it becomes more active and its downstream pattern shifts southward during El Nino events. Two responsible mechanisms are proposed for the ENSO modulation: the eddy-to-eddy interaction that leads to the change in the activeness of the teleconnection and the waveguide effect that accounts for the shift of the teleconnection. First, the El Nino-related Atlantic anomalies of the Rossby wave train and storm track amplify the Atlantic disturbances of the intermediate frequency and thus the activeness of the teleconnection. Second, during El Nino years, the East Asian jet stream shifts southward, resulting in the southward shifts of the downstream waveguide effect and thus the downstream pattern. This study also demonstrates that when investigating an atmospheric mode or its impacts, the signals of different time scales should be separated and the cross-frequency interactive systems necessitate examinations. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442845400004 |
WOS关键词 | ATLANTIC CLIMATE VARIABILITY ; 500-MB HEIGHT FLUCTUATIONS ; SUBTROPICAL WESTERLY JET ; ROSSBY-WAVE PROPAGATION ; ASIAN WINTER MONSOON ; EL-NINO ; ATMOSPHERIC CIRCULATION ; GLOBAL TELECONNECTIONS ; GEOPOTENTIAL HEIGHT ; NORTH PACIFIC |
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/19577 |
专题 | 气候变化 |
作者单位 | 1.Sun Yat Sen Univ, Sch Atmospher Sci, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou, Guangdong, Peoples R China; 2.Sun Yat Sen Univ, Inst Earth Climate & Environm Syst, Guangzhou, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | He, Shan,Yang, Song,Lu, Mengmeng,et al. Afro-Eurasian Intermediate-Frequency Teleconnection and Modulation by ENSO[J]. JOURNAL OF CLIMATE,2018,31(19):8121-8139. |
APA | He, Shan,Yang, Song,Lu, Mengmeng,&Li, Zhenning.(2018).Afro-Eurasian Intermediate-Frequency Teleconnection and Modulation by ENSO.JOURNAL OF CLIMATE,31(19),8121-8139. |
MLA | He, Shan,et al."Afro-Eurasian Intermediate-Frequency Teleconnection and Modulation by ENSO".JOURNAL OF CLIMATE 31.19(2018):8121-8139. |
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