@Article{CoelhoUvoAmbr:2002:ExImTr,
               author = "Coelho, Caio Augusto dos Santos and Uvo, C. B. and Ambrizzi, T",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE/CPTEC)} and 
                         International Research Institute for Climate Prediction, 
                         Palisades, NY, USA and {Departamento de Ci{\^e}ncias 
                         Atmosf{\'e}ricas Instituto de Astronomia Geof{\'{\i}}sica e 
                         Ci{\^e}ncias Atmosf{\'e}ricas}",
                title = "Exploring the impacts of the tropical Pacific SST on the 
                         precipitation patterns over South America during ENSO periods",
              journal = "Theoretical and Applied Climatology",
                 year = "2002",
               volume = "71",
               number = "3-4",
                pages = "185--197",
                month = "feb",
             keywords = "sea-surface temperature, singular-value decomposition, scale 
                         common features, baiu frontal zone, La-Nina events, El-Nino, 
                         northeast Brazil, statistical-models, oscillation 
                         cycle,anomalies.",
             abstract = "Previous studies on precipitarion over South America that strongly 
                         support the existence ok links between precipitation and SST 
                         anomalies in the Pacific Ocean have identified specific regions 
                         where the ENSO signal is particularly strnger.Northeast of Brazil 
                         and some parts of southern South America are examples of these 
                         regions. However, the same attention was not taken to identify 
                         which regions in the Central and East Pacific ocean are better 
                         correlated with the South America precipitation during extreme 
                         ENSO events, and also which are the transition regions of the 
                         precipitation signal over South America during these events. 
                         Coincident periods of ENSO events for both SST over the tropical 
                         Pacific ocean and montlhy precipitation sums from many 
                         observational stations over South America werw selected and 
                         analyzed. Two statistical methods were used for the data analysis: 
                         Singular Value Decomposition (SVD) and Simple Linear Correlation 
                         (SLC). The SVD results for warmer events in the Pacific 
                         corroborate previous ones and also clearly identified a transition 
                         region between the drier conditions in the Northeast of Brasil and 
                         the wetter conditions in the Southeast/South of Brazil. Transition 
                         regions were also determined over Peru and central Amazon. The SLC 
                         results indicated that the SST anomalies in the tropical east 
                         Pacific ocean has the strongest influence in the South American 
                         precipitation during El Niño events. During La Niña events the 
                         central area of the Pacific, around 180º, has shown a more 
                         significant influence.",
                 issn = "0177-798X",
             language = "en",
           targetfile = "coelho_uvo_ambrizzi_2002.pdf",
        urlaccessdate = "20 maio 2024"
}