Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0365.1 |
A Nonstationary ENSO-NAO Relationship Due to AMO Modulation | |
Zhang, Wenjun1; Mei, Xuebin1; Geng, Xin1; Turner, Andrew G.2,3; Jin, Fei-Fei4 | |
2019 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:1页码:33-43 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; England; USA |
英文摘要 | Many previous studies have demonstrated a high uncertainty in the relationship between El Nino-Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO). In the present work, decadal modulation by the Atlantic multidecadal oscillation (AMO) is investigated as a possible cause of the nonstationary ENSO-NAO relationship based on observed and reanalysis data. It is found that the negative ENSO-NAO correlation in late winter is significant only when ENSO and the AMO are in phase (AMO+/El Nino and AMO-/La Nina). However, no significant ENSO-driven atmospheric anomalies can be observed over the North Atlantic when ENSO and the AMO are out of phase (AMO-/El Nino and AMO+/La Nina). Further analysis indicates that the sea surface temperature anomaly (SSTA) in the tropical North Atlantic (TNA) plays an essential role in this modulating effect. Because of broadly analogous TNA SSTA responses to both ENSO and the AMO during late winter, a warm SSTA in the TNA is evident when El Nino occurs during a positive AMO phase, resulting in a significantly weakened NAO, and vice versa when La Nina occurs during a negative AMO phase. In contrast, neither the TNA SSTA nor the NAO shows a prominent change under out-of-phase combinations of ENSO and AMO. The AMO modulation and the associated effect of the TNA SSTA are shown to be well reproduced by historical simulations of the HadCM3 coupled model and further verified by forced experiments using an atmospheric circulation model. These offer hope that similar models will be able to make predictions for the NAO when appropriately initialized. |
英文关键词 | ENSO North Atlantic Oscillation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452132400003 |
WOS关键词 | NORTH-ATLANTIC OSCILLATION ; NINO-SOUTHERN OSCILLATION ; LEVEL PRESSURE ANOMALIES ; TROPICAL ATLANTIC ; WINTER CLIMATE ; ATMOSPHERIC CIRCULATION ; VARIABILITY ; IMPACT ; TELECONNECTIONS ; EUROPE |
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/19392 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Joint Int Res Lab Climate & Environm Change ILCEC, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Key Lab Meteorol Disaster,Minist Educ, Nanjing, Jiangsu, Peoples R China; 2.Univ Reading, Natl Ctr Atmospher Sci, Reading, Berks, England; 3.Univ Reading, Dept Meteorol, Reading, Berks, England; 4.Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Dept Atmospher Sci, Honolulu, HI 96822 USA |
推荐引用方式 GB/T 7714 | Zhang, Wenjun,Mei, Xuebin,Geng, Xin,et al. A Nonstationary ENSO-NAO Relationship Due to AMO Modulation[J]. JOURNAL OF CLIMATE,2019,32(1):33-43. |
APA | Zhang, Wenjun,Mei, Xuebin,Geng, Xin,Turner, Andrew G.,&Jin, Fei-Fei.(2019).A Nonstationary ENSO-NAO Relationship Due to AMO Modulation.JOURNAL OF CLIMATE,32(1),33-43. |
MLA | Zhang, Wenjun,et al."A Nonstationary ENSO-NAO Relationship Due to AMO Modulation".JOURNAL OF CLIMATE 32.1(2019):33-43. |
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