Articles | Volume 19, issue 17
Atmos. Chem. Phys., 19, 11383–11399, 2019
https://doi.org/10.5194/acp-19-11383-2019
Atmos. Chem. Phys., 19, 11383–11399, 2019
https://doi.org/10.5194/acp-19-11383-2019
Research article
10 Sep 2019
Research article | 10 Sep 2019

A double ITCZ phenomenology of wind errors in the equatorial Atlantic in seasonal forecasts with ECMWF models

Jonathan K. P. Shonk et al.

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Cited articles

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Short summary
Modern climate models are affected by systematic biases that harm their ability to produce reliable seasonal forecasts and climate projections. In this study, we investigate causes of biases in wind patterns over the tropical Atlantic during northern spring in three related models. We find that the wind biases are associated with an increase in excess rainfall and convergence in the tropical western Atlantic at the start of April, leading to the redirection of trade winds away from the Equator.
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