@InProceedings{BarbosaArra:2010:AcClCh,
author = "Barbosa, H M and Arraut, Josefina Moraes",
affiliation = "Physics Institute / Dep. de Fisica Aplicada, University of Sao
Paulo, Sao Paulo, Brazil and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Accessing Climate Change Impacts On Moisture Flux Over South
America During The Rainy Season",
booktitle = "Abstracts...",
year = "2010",
organization = "The Meeting of the Americas.",
keywords = "Atmosphere, water cycles, global climate models, precipitation.",
abstract = "An important role of the South American Monsoon System (SAMS) is
in driving the water balance in the tropics and subtropics by
modulating the Tropical Atlantic Ocean's moisture flux that enters
South America at its northern coast and is deviated southwardly by
the Andes to end up contributing to subtropical precipitation. An
yet open question is how this picture might be changed under the
upcoming anthropogenic climate changes. We draw some light on the
matter by comparing modeled moisture fluxes for the 20th and 21th
centuries. The Brazilian Model of the Global Climate System
(BMGCS), which is being developed by the Brazilian scientific
community for its climate change studies and is known to reproduce
the SAMS, is used for this study. Sea surface temperature (SST)
fields from Hadley Center-HadCM3, GFDL-CM2.1 and MPI-ECHAM5 models
produced on the 20C3M, A2 and B1 experiments are used to force the
atmospheric component of BMGCS and downscale these IPCC scenarios.
The vertically integrated moisture flux and the moisture balance
over South America is analyzed here for each of our nine model
integrations. Our results for the rainy season (NDJFM) season
shows an intensification of the moisture flux crossing the
continent, which is more strong under A2 scenario than under B1.
This is in agreement with many studies that shown an
intensification of the global hydrological cycle for a warmer
climate and particularly those that points to increased
precipitation in subtropical South America.",
conference-location = "Foz do Igua{\c{c}}u, BR",
conference-year = "08-12 aug 2010",
language = "en",
urlaccessdate = "29 jun. 2024"
}