ESRL/PSD Seminar Series

Summer Precipitation Variability over Southeastern South America in a Global Warming Scenario

Carolina S. Vera
CIMA/DCAO. University of Buenos Aires


December through February rainfall variability in southeastern South America (SESA) is studied in 18 coupled general circulation models (CGCMs) from the WCRP/CMIP3 dataset, for present climate and SRES-A1B climate change scenario. An analysis is made in terms of properties of the first leading pattern of rainfall variability in the region, characterized by a dipole-like structure with centers of action over both SESA and the South Atlantic Convergence Zone (SACZ) region. The study was performed to answer the following questions: How might rainfall variability within SESA change in a future climate and how much of that change explains the projected positive trends in the summer mean rainfall in SESA, as has been identified in previous works.

Tuesday, February 8

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