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DOI | 10.1007/s00382-016-3473-0 |
Role of off-equatorial SST in El Nino teleconnection to East Asia during El Nino decaying spring | |
Kim, Jin-Soo; Kug, Jong-Seong | |
2019-06-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 52期号:12页码:7293-7308 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | Observational evidences are presented to show significant differences in Pacific-East Asian (PEA) teleconnections during the El Nino decaying period depending on the northern off-equatorial sea surface temperature (SST) conditions. On the basis of the northern off-equatorial central Pacific SST (NOCP) index, we separate El Nino events into two groups. Distinctive differences are observed between the two groups not only in tropical features but also in mid-latitude teleconnections. In particular, the NOCP index is closely related to the strength of the local feedback between the SST anomalies and the anticyclonic flow over the western North Pacific (WNP) during the ensuing spring of the El Nino events. Because the WNP anticyclone tends to persist until boreal spring in the case of negative NOCP, diabatic cooling due to the reduced precipitation over the WNP induces anticyclonic flow over the Kuroshio extension region via a Rossby wave response, which leads to warm and wet conditions over East Asia. However, because the WNP anticyclone decays early in the case of positive NOCP, cyclonic circulation exists over the North Pacific, which leads to cold and dry conditions over East Asia. Consequently, the maintenance of the WNP anticyclone during the El Nino decaying period may explain the discrepancy in the PEA teleconnections in various types of El Nino. Accordingly, the NOCP index could be a possible predictor for boreal spring climate conditions over East Asia. |
英文关键词 | ENSO Pacific-East Asian teleconnection El Nino diversity Off-equatorial SST |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000469017000011 |
WOS关键词 | PHILIPPINE SEA ANTICYCLONE ; WESTERN NORTH PACIFIC ; INDIAN-OCEAN ; ATMOSPHERIC CIRCULATION ; ANOMALOUS ANTICYCLONE ; INTERACTIVE FEEDBACK ; LA-NINA ; ENSO ; CLIMATE ; 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/183511 |
专题 | 气候变化 |
作者单位 | Pohang Univ Sci & Technol POSTECH, Div Environm Sci & Engn, Pohang 37673, South Korea |
推荐引用方式 GB/T 7714 | Kim, Jin-Soo,Kug, Jong-Seong. Role of off-equatorial SST in El Nino teleconnection to East Asia during El Nino decaying spring[J]. CLIMATE DYNAMICS,2019,52(12):7293-7308. |
APA | Kim, Jin-Soo,&Kug, Jong-Seong.(2019).Role of off-equatorial SST in El Nino teleconnection to East Asia during El Nino decaying spring.CLIMATE DYNAMICS,52(12),7293-7308. |
MLA | Kim, Jin-Soo,et al."Role of off-equatorial SST in El Nino teleconnection to East Asia during El Nino decaying spring".CLIMATE DYNAMICS 52.12(2019):7293-7308. |
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