Climate Dynamics

, Volume 52, Issue 1–2, pp 257–274 | Cite as

Impact of ENSO longitudinal position on teleconnections to the NAO

  • Wenjun ZhangEmail author
  • Ziqi Wang
  • Malte F. Stuecker
  • Andrew G. Turner
  • Fei-Fei Jin
  • Xin Geng


While significant improvements have been made in understanding how the El Niño–Southern Oscillation (ENSO) impacts both North American and Asian climate, its relationship with the North Atlantic Oscillation (NAO) remains less clear. Observations indicate that ENSO exhibits a highly complex relationship with the NAO-associated atmospheric circulation. One critical contribution to this ambiguous ENSO/NAO relationship originates from ENSO’s diversity in its spatial structure. In general, both eastern (EP) and central Pacific (CP) El Niño events tend to be accompanied by a negative NAO-like atmospheric response. However, for two different types of La Niña the NAO response is almost opposite. Thus, the NAO responses for the CP ENSO are mostly linear, while nonlinear NAO responses dominate for the EP ENSO. These contrasting extra-tropical atmospheric responses are mainly attributed to nonlinear air-sea interactions in the tropical eastern Pacific. The local atmospheric response to the CP ENSO sea surface temperature (SST) anomalies is highly linear since the air-sea action center is located within the Pacific warm pool, characterized by relatively high climatological SSTs. In contrast, the EP ENSO SST anomalies are located in an area of relatively low climatological SSTs in the eastern equatorial Pacific. Here only sufficiently high positive SST anomalies during EP El Niño events are able to overcome the SST threshold for deep convection, while hardly any anomalous convection is associated with EP La Niña SSTs that are below this threshold. This ENSO/NAO relationship has important implications for NAO seasonal prediction and places a higher requirement on models in reproducing the full diversity of ENSO.



This work was supported by the SOA Program on Global Change and Air-Sea interactions (GASI-IPOVAI-03), the National Nature Science Foundation of China (41675073), and Jiangsu 333 High-level Talent Cultivation Project and the Six Talent Peaks. MFS was supported by the NOAA Climate and Global Change Postdoctoral Fellowship Program, administered by UCAR’s Cooperative Programs for the Advancement of Earth System Sciences (CPAESS). AGT was supported by the NCAS-Climate Core Agreement, Contract number R8/H12/83/00.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.CIC-FEMD/ILCEC, Key Laboratory of Meteorological Disaster of Ministry of Education, College of Atmospheric SciencesNanjing University of Information Science and TechnologyNanjingChina
  2. 2.Department of Atmospheric SciencesUniversity of WashingtonSeattleUSA
  3. 3.Cooperative Programs for the Advancement of Earth System Sciences (CPAESS)University Corporation for Atmospheric Research (UCAR)BoulderUSA
  4. 4.NCAS-ClimateUniversity of ReadingReadingUK
  5. 5.Department of MeteorologyUniversity of ReadingReadingUK
  6. 6.Department of Atmospheric Sciences, SOESTUniversity of Hawai’i at ManoaHonoluluUSA

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