| DOI: | 10.1175/JCLI-D-18-0365.1
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| Scopus记录号: | 2-s2.0-85058815273
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| 论文题名: | A nonstationary ENSO-NAO relationship due to AMO modulation |
| 作者: | Zhang W.; Mei X.; Geng X.; Turner A.G.; Jin F.-F.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2019
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| 卷: | 32, 期:1 | | 起始页码: | 33
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| 结束页码: | 43
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| 语种: | 英语
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| Scopus关键词: | Atmospheric pressure
; Modulation
; Oceanography
; Surface waters
; Atlantic multidecadal oscillations
; Atmospheric anomaly
; Atmospheric circulation model
; Historical simulation
; Modulating effect
; North Atlantic oscillations
; Sea surface temperature anomalies
; Southern oscillation
; Climatology
; air-sea interaction
; Atlantic Multidecadal Oscillation
; atmospheric general circulation model
; computer simulation
; correlation
; El Nino-Southern Oscillation
; North Atlantic Oscillation
; numerical model
; sea surface temperature
; temperature anomaly
; Atlantic Ocean
; Atlantic Ocean (North)
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| 英文摘要: | Many previous studies have demonstrated a high uncertainty in the relationship between El Niño-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 theAMOare in phase (AMO - /El Niño andAMO + / La Niña). 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 Niño and AMO - /La Niña). 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 Niño occurs during a positiveAMOphase, resulting in a significantly weakened NAO, and vice versa when La Niña occurs during a negativeAMOphase. In contrast, neither theTNASSTA nor theNAOshows a prominent change under outof- 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. © 2018 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/117261
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| Appears in Collections: | 气候变化与战略
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| Recommended Citation: | |
Zhang W.,Mei X.,Geng X.,et al. A nonstationary ENSO-NAO relationship due to AMO modulation[J]. Journal of Climate,2019-01-01,32(1)
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