We wish to thank the two anonymous reviewers for their helpful suggestions. This work has been supported by CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brazil) and the Inter-American Institute for Global Change Research (IAI—CRN055). The IRI was established by agreement between the NOAA Climate Program Office and Columbia University. This paper is funded by the cooperative agreement from the National Oceanic and Atmospheric Adminstration NA050AR431004. The views expressed herein are those of the authors and do not necessarily reflect the views of NOAA or any of its subagencies.
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