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DOI | 10.1175/JCLI-D-19-0049.1 |
El Nino-Related Summer Precipitation Anomalies in Southeast Asia Modulated by the Atlantic Multidecadal Oscillation | |
Fan, Yi1,2; Fan, Ke1,2; Zhu, Xiuhua3,4; Fraedrich, Klaus3 | |
2019-11-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:22页码:7971-7987 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Germany |
英文摘要 | How the Atlantic multidecadal oscillation (AMO) affects El Nino-related signals in Southeast Asia is investigated in this study on a subseasonal scale. Based on observational and reanalysis data, as well as numerical model simulations, El Nino-related precipitation anomalies are analyzed for AMO positive and negative phases, which reveals a time-dependent modulation of the AMO. 1) In May-June, the AMO influences the precipitation in southern China (SC) and the Indochina peninsula (ICP) by modulating the El Nino-related air-sea interaction over the western North Pacific (WNP). During negative AMO phases, cold sea surface temperature anomalies (SSTAs) over the WNP favor the maintaining of the WNP anomalous anticyclone (WNPAC). The associated southerly (westerly) anomalies on the northwest (southwest) flank of the WNPAC enhance (reduce) the climatological moisture transport to SC (the ICP) and result in wetter (drier) than normal conditions. In contrast, during positive AMO phases, weak SSTAs over the WNP lead to limited influence of El Nino on precipitation in Southeast Asia. 2) In July-August, the teleconnection impact from the North Atlantic is more manifest than that in May-June. During positive AMO phases, the warmer than normal North Atlantic favors anomalous wave trains, which propagate along the "great circle route" and result in positive pressure anomalies over SC, consequently suppressing precipitation in SC and the ICP. During negative AMO phases, the anomalous wave trains tend to propagate eastward from Europe to Northeast Asia along the summer Asian jet, exerting limited influence on Southeast Asia. |
英文关键词 | North Atlantic Ocean ENSO Teleconnections Interdecadal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000494427800002 |
WOS关键词 | WESTERN NORTH PACIFIC ; SEA-SURFACE TEMPERATURE ; INDIAN-OCEAN ; TROPICAL PACIFIC ; WINTER MONSOON ; EAST-ASIA ; ENSO ; RAINFALL ; CLIMATE ; CHINA |
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/188129 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Nansen Zhu Int Res Ctr, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Max Planck Inst Meteorol, Hamburg, Germany; 4.Univ Hamburg, Inst Meteorol, Ctr Earth Syst Res & Sustainabil, Hamburg, Germany |
推荐引用方式 GB/T 7714 | Fan, Yi,Fan, Ke,Zhu, Xiuhua,et al. El Nino-Related Summer Precipitation Anomalies in Southeast Asia Modulated by the Atlantic Multidecadal Oscillation[J]. JOURNAL OF CLIMATE,2019,32(22):7971-7987. |
APA | Fan, Yi,Fan, Ke,Zhu, Xiuhua,&Fraedrich, Klaus.(2019).El Nino-Related Summer Precipitation Anomalies in Southeast Asia Modulated by the Atlantic Multidecadal Oscillation.JOURNAL OF CLIMATE,32(22),7971-7987. |
MLA | Fan, Yi,et al."El Nino-Related Summer Precipitation Anomalies in Southeast Asia Modulated by the Atlantic Multidecadal Oscillation".JOURNAL OF CLIMATE 32.22(2019):7971-7987. |
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