Cited by 153Climate variability and modelsGeology and Paleoclimatology ResearchMeteorological Phenomena and Simulations

How Does El Niño–Southern Oscillation Change Under Global Warming—A First Look at CMIP6

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Fredriksen, Hege‐Beate, Berner, Judith, Subramanian, Aneesh C., Capotondi, Antonietta·2020·Geophysical Research Letters

Published version of a preprint

Abstract

The latest generation of coupled models, the sixth Coupled Models Intercomparison Project (CMIP6), is used to study the changes in the El Niño–Southern Oscillation (ENSO) in a warming climate. For the four future scenarios studied, the sea surface temperature variability increases in most CMIP6 models, but to varying degrees. This increase is linked to a weakening of the east‐west temperature gradient in the tropical Pacific Ocean, which is evident across all models. Just as in previous generations of climate models, we find that many characteristics of future ENSO remain uncertain. This includes changes in dominant time scale, extratropical teleconnection patterns, and amplitude of El Niño and La Niña events. For models with the strongest increase in future variability, the majority of the increase happens in the Eastern Pacific, where the strongest El Niño events usually occur.

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Crossref · 10.1029/2020gl090640

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  • The IPCC AR6 statement on ENSO SST variability is contrary to studies 5-7 based on CMIP6 climate models.

    “The IPCC AR6 statement on ENSO SST variability is contrary to studies 5-7 based on climate models participating in the sixth phase of the Coupled Model Intercomparison Project 8 (CMIP6).”

    From Increased ENSO sea surface temperature variability under four IPCC emission scenarios (2022) · cites this paper as [5]

    The Results (§3.2) and Summary and Conclusion (§4) report increased ENSO-related SST variance in most of the 11 CMIP6 models, supporting the description of this paper as a CMIP6 study of ENSO SST variability. The paper does not discuss the IPCC AR6 statement or establish that its findings are contrary to it; that comparison is the citing authors’ framing. (LLM, conf=0.84)

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1 of the 37 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. Guilyardi, E., Bellenger, H., Collins, M., Ferrett, S., Cai, W., & Wittenberg, A. (2012). A first look at ENSO in CMIP5. Clivar Exchanges, 17(58), 29-32

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Authors
Fredriksen, H., Berner, J., Subramanian, A. C., & Capotondi, A.
Affiliations
  • UiT The Arctic University of Norway (NO)
  • NSF National Center for Atmospheric Research (US)
  • University of Colorado Boulder (US)
  • Cooperative Institute for Research in Environmental Sciences (US)
Corresponding author
Fredriksen, Hege‐Beate
Venue
Geophysical Research Letters
Published
2020-11-17
Volume
47
Issue
22
ISSN
  • 0094-8276 (ISSN-L)
  • 1944-8007
OpenAlex
W3093918166
Cited by
153
References
37
Citations by year
2026: 12 · 2025: 24 · 2024: 35 · 2023: 38 · 2022: 31 · 2021: 13
FWCI
7.63
Type
journal article
Language
en
Open access
Locations
  • Geophysical Research Letters (publishedVersion, cc-by)
  • NORA - Norwegian Open Research Archives (submittedVersion, other-oa)
  • NOAA Institutional Repository (submittedVersion)
Funders
  • National Science Foundation
  • National Oceanic and Atmospheric Administration (NA18OAR4310405)
  • Climate Program Office (NA18OAR4310405)
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Meteorological Phenomena and Simulations
Keywords
ENSO, global warming, CMIP6, sea surface temperature variability, ENSO teleconnections, eastern Pacific El Niño, climate model projections

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