Cited by 29Climate variability and modelsMeteorological Phenomena and SimulationsGeology and Paleoclimatology Research

Potentially Predictable Components of African Summer Rainfall in an SST-Forced GCM Simulation

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Tippett, Michael K., Giannini, Alessandra·2006·Journal of Climate

Abstract

An ensemble of general circulation model (GCM) integrations forced by observed sea surface temperature (SST) represents the climate response to SST forcing as well as internal variability or “noise.” Signal-to-noise analysis is used to identify the most reproducible GCM patterns of African summer precipitation related to the SST forcing. Two of these potentially predictable components are associated with the precipitation of the Guinea Coast and Sahel regions and correlate well with observations. The GCM predictable component associated with rainfall in the Sahel region reproduces observed temporal variability on both interannual and decadal time scales, though with reduced amplitude.

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Crossref · 10.1175/jcli3779.1

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  • General circulation models fail to reproduce West African rainfall interannual variability.

    “the general circulation models (GCMs) fail to reproduce WA rainfall interannual variability (Moron et al. 2003;Tippett 2006;Tippett and Giannini 2006).”

    From Tropical Atlantic variability modes (1979-2002). Part I: Time-evolving SST modes related to West African rainfall (2008) · cites this paper as Tippett and Giannini 2006

    The Introduction says that, among GCMs forced by observed sea-surface temperatures, only one reproduced the interannual component of Sahel rainfall. But the claim extends that limitation to GCMs and West African rainfall generally. The Summary and discussion says GCMs can simulate Sahel interannual variability and reports simulation skill along the Guinea Coast. (LLM, conf=0.87)

    Experimental — accuracy not yet measured

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Authors
Tippett, M. K., & Giannini, A.
Affiliations
Columbia University (US)
Venue
Journal of Climate
Published
2006-07-01
Volume
19
Issue
13
Pages
3133-3144
ISSN
  • 0894-8755 (ISSN-L)
  • 1520-0442
OpenAlex
W2096599656
Cited by
29
References
38
Citations by year
2022: 2 · 2020: 1 · 2019: 1 · 2017: 2 · 2016: 2 · 2015: 3 · 2014: 2 · 2013: 3 · 2012: 1
FWCI
2.16
Type
journal article
Language
en
Open access
Locations
Journal of Climate (publishedVersion)
Funders
National Oceanic and Atmospheric Administration (NA07GP0213)
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Meteorological Phenomena and Simulations
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
Keywords
sea surface temperature forcing, signal-to-noise analysis, Sahel rainfall, interannual variability, decadal variability, natural climate variability

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