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. This study evaluates how climate change might affect advective heat and volume transports in the South Atlantic Basin based on Intergovernmental Panel on Climate Change (IPCC) A1FI and B1 climate change scenarios projections. Using the Climatic Model 2.1 (CM2.1) results that were developed by the Geophysical Fluid Dynamics Laboratory (GFDL), integrated on the water column, analyses were conducted through two meridional sections and one zonal section of the study area (between 25◦S-70◦S and 70◦W-20◦E). The annual mean time series were analyzed using historical 100-year climate change scenarios. The analyses of the climate change experiment parameters were compared with those of the H2 climate scenario. The volume transport (VT) through the water column weakened of about 5% in average and the advective heat transport (HT) increased of about 22% at the Drake and Africa-Antarctic (AF-AA) passages at the end of the experiments. For the zonal section at 25◦S, direction oscillations were observed in the integrated VT through the water column due to velocity intensity variations of the water masses and a decrease of about 22% in the HT was observed. Thus, it was observed a decrease in the water and heat supplies at 25◦S due to the Drake and AF-AA VT behavior, which may alter deep circulation patterns. Keywords: water column analysis, advective heat transport, flow direction, Drake Passage, Africa-Antarctic passage. RESUMO. Baseado nas projecoes dos cenarios de mudancas climaticas A1FI e B1 do Painel Intergovernamental de Mudanc¸as Climaticas (IPCC), esse estudo avalia como as mudancas climaticas podem impactar os transportes advectivos de calor e volume na bacia do Atlântico Sul. Atraves de resultados gerados pelo Modelo Climatico 2.1 (CM2.1) desenvolvido pelo Geophysical Fluid Dynamics Laboratory (GFDL), foram feitas analises atraves de duas secoes meridionais e uma secao zonal na area de estudo (entre 25◦S-70◦S e 70◦W-20◦E) integradas na coluna d’agua. Foram analisados campos prognosticos medios anuais referentes a experimentos com 100 anos de duracao. As analises dos parâmetros dos experimentos de mudancas climaticas foram realizadas em comparacao com o experimento clima (H2). O transporte de volume (TV) integrado na coluna d’agua enfraqueceu aproximadamente 5%, enquanto o transporte advectivo de calor (TC) aumentou em torno de 22% no Drake e na Passagem Africa-Antartida (AF-AA) ao final dos experimentos. Para a secao em 25◦S, foram observadas oscilacoes de direcao do fluxo devido a variacoes na intensidade das velocidades das massas d’agua com um enfraquecimento medio de 22% para o TC. Adicionalmente, foi observada uma diminuicao no suprimento de agua em 25◦S devido ao comportamento do TV das demais secoes, o que pode alterar os padroes de circulacao profunda. Palavras-chave: analise na coluna d’agua, transporte advectivo de calor, direcao do fluxo, Passagem de Drake, passagem Africa-Antartida.

VOLUME AND HEAT TRANSPORTS ANALYSIS IN THE SOUTH ATLANTIC BASIN RELATED TO CLIMATE CHANGE SCENARIOS