Abstract
This Chapter presents the results from the characterization of the AMV in the CMIP5 simulations from several different models. Then, the precipitation response to the AMV in the regions of interest of this thesis is analyzed, as well as the atmospheric mechanisms responsible for such relationship. The same is done using observations in order to identify similarities or discrepancies. The results obtained from simulations that have the evolution of the observed external radiative forcing incorporated are compared with others that do not include such forcing. This comparison allows to find out whether the AMV has an externally forced component and how this effect can influence the impact on rainfall. Finally, the analysis of the RCP8.5 future projections provide an insight of the foreseeable evolution of both the AMV mode of SST and its impacts on rainfall in a hypothetical future with high amounts of GHGs emissions.
The content of this Chapter referring to the AMV influence on northern South American rainfall is published in the following article:
Villamayor, J., Ambrizzi, T. & Mohino, E. (2018a): Influence of decadal sea surface temperature variability on northern Brazil rainfall in CMIP5 simulations. Clim. Dyn.
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Villamayor, J. (2020). Influence of the AMV. In: Influence of the Sea Surface Temperature Decadal Variability on Tropical Precipitation: West African and South American Monsoon. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-030-20327-6_4
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