Cited by 253Climate variability and modelsOceanographic and Atmospheric ProcessesMeteorological Phenomena and Simulations

Climate model biases in the eastern tropical oceans: causes, impacts and ways forward.

Richter, Ingo·2015·WIREs Climate Change

Abstract

The eastern boundaries of the tropical and subtropical oceans are regions of high biological productivity that support some of the world's largest fisheries. They also feature extensive stratocumulus cloud decks that play a pivotal role in the response of the climate system to greenhouse gas forcing. Global climate models experience great difficulties simulating eastern boundary regions, with one of the most notable shortcomings being warm sea‐surface temperature biases that often exceed 5 K. These model biases are due to several reasons. (1) Weaker than observed alongshore winds lead to an underrepresentation of upwelling and alongshore currents and the cooling associated with them. (2) Stratocumulus decks and their effects on shortwave radiation are underpredicted in the models. (3) The offshore transport of cool waters by mesoscale eddies is not adequately represented by global models due to insufficient resolution. (4) The sharp vertical temperature gradient separating the warm upper ocean layer from the deep ocean is too diffuse in the models. More work will be required to assess the relative importance of these error sources and to find ways of mitigating them. Coordinated multi‐model experiments are vital to achieve this goal, as are enhanced ocean and atmosphere observations of the eastern boundary regions. To what extent eastern ocean biases compromise the models' ability to produce accurate seasonal predictions, and climate change projections should be another focus…

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Crossref · 10.1002/wcc.338

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94 of 94 references verified0 citation errors · 0 not checkable

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  • The warm SST bias in the Benguela coastal upwelling region is more severe than that at the equator, exceeding 2.5°C in the multi-model average of AOGCMs from CMIP5.

    “The warm SST bias in the Benguela coastal upwelling region (Figure 9) is more severe than that at the equator, exceeding 2.5 • C in the multi-model average of atmosphereocean general circulation models (AOGCMs) from the Coupled Model Intercomparison Project Phase 5 (CMIP5; Toniazzo and Woolnough, 2014;Richter, 2015;Zuidema et al., 2016a).”

    From The tropical atlantic observing system (2019) · cites this paper as Richter, 2015

  • The atmospheric component of the coupled models is the primary culprit for the Southeast Atlantic warm SST bias, with the ocean playing a vital but secondary role.

    “This suggests the atmospheric component of the coupled models is the primary culprit (Lauer and Hamilton, 2013), with the ocean playing a vital but secondary role (Richter, 2015).”

    From The tropical atlantic observing system (2019) · cites this paper as Richter, 2015

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Authors
Richter, I.
Affiliations
Japan Agency for Marine-Earth Science and Technology (JP)
Corresponding author
Richter, Ingo
Venue
WIREs Climate Change
Publisher
Wiley
Published
2015-03-11
Volume
6
Issue
3
Pages
345-358
ISSN
  • 1757-7780 (ISSN-L)
  • 1757-7799
OpenAlex
W1508836477
Cited by
253
References
95
Citations by year
2026: 8 · 2025: 27 · 2024: 23 · 2023: 20 · 2022: 29 · 2021: 25 · 2020: 39 · 2019: 26 · 2018: 27 · 2017: 14 · 2016: 12 · 2015: 3
FWCI
15.29
Type
journal article
Language
en
Open access
closed
Locations
Wiley Interdisciplinary Reviews Climate Change (publishedVersion)
Funders
U.S. Department of Energy
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Meteorological Phenomena and Simulations
Keywords
climate model bias, eastern boundary upwelling, stratocumulus clouds, sea surface temperature bias, alongshore winds, mesoscale eddies, shortwave radiation, ocean-atmosphere interaction, model resolution, seasonal forecasting, climate change projections

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