Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 547257
Title How Does the Seasonal Cycle Control Equatorial Atlantic Interannual Variability?
Author(s) Prodhomme, C.; Voldoire, A.; Exarchou, E.; Deppenmeier, A.L.; García-Serrano, J.; Guemas, V.
Source Geophysical Research Letters 46 (2019)2. - ISSN 0094-8276 - p. 916 - 922.
DOI https://doi.org/10.1029/2018GL080837
Department(s) Plant Breeding
Meteorology and Air Quality
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Atlantic Niño - Bjerkness feedback - coupled model - systematic error - Tropical Atlantic
Abstract

It has long been thought that reducing mean-state biases would lead to improvements in variability. However, so far, there is no confirmation of a relation between model mean biases and variability. While most coupled models exhibit substantial sea surface temperature (SST) biases in the Tropical Atlantic, they are still able to reproduce reasonable SST variability in the basin. We investigate the relationship between the first- and second-order moments of the SST distribution in the equatorial Atlantic using Coupled Model Intercomparison Project Phase 5 simulations. Results suggest that the ability of the coupled models to properly reproduce the interannual variability is linked to their ability to simulate a realistic seasonal cycle evolution, that is, a realistic cold tongue development and a realistic Bjerknes feedback during the beginning of summer, rather than to their ability to represent the summer SST climatology.

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