Effect of ocean mesoscale variability on the mean state of tropical Atlantic climate
Article first published online: 9 MAY 2006
Copyright 2006 by the American Geophysical Union.
Geophysical Research Letters
Volume 33, Issue 9, May 2006
How to Cite
2006), Effect of ocean mesoscale variability on the mean state of tropical Atlantic climate, Geophys. Res. Lett., 33, L09606, doi:10.1029/2005GL025651., , , and (
- Issue published online: 9 MAY 2006
- Article first published online: 9 MAY 2006
- Manuscript Accepted: 31 MAR 2006
- Manuscript Revised: 28 MAR 2006
- Manuscript Received: 29 DEC 2005
 A regional coupled ocean-atmospheric model is used to investigate the effect of oceanic mesoscale features on the mean climate of the tropical Atlantic. It is shown that, compared to a non-eddy resolving ocean model, resolving oceanic mesoscale variability leads to a cooler mean equatorial cold tongue and a cooler coastal upwelling zone. This changes the meridional SST gradient, and the resulting weaker low-level convergence reduces the mean of rainfall in the marine Inter-Tropical Convergence Zone (ITCZ). The reduced rainfall and the cooler coastal upwelling regions represent a clear improvement of the model solution.