@InProceedings{SantosSanRocSchSil:2014:AnInOs,
               author = "Santos, Diego Jatob{\'a} dos and Santos, Ariane F. dos and Rocha, 
                         Fabio P. da and Schmengler, Moacir and Silva, Fab{\'{\i}}ola 
                         S.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "An{\'a}lise da influ{\^e}ncia das Oscila{\c{c}}{\~o}es 
                         Intrassazonais no padr{\~a}o de Precipita{\c{c}}{\~a}o na 
                         Regi{\~a}o Sudeste do Brasil Durante o Ver{\~a}o de 2014 e 
                         Impactos sobre o Sistema Cantareira",
                 year = "2014",
         organization = "Congresso Brasileiro de Meteorologia, 18. (CBMET).",
             keywords = "Precipita{\c{c}}{\~a}o, Sistema Cantareira.",
             abstract = "Os padr{\~o}es de circula{\c{c}}{\~a}o atmosf{\'e}rica e 
                         oce{\^a}nica de grande escala, dentre eles as 
                         oscila{\c{c}}{\~o}es intrassazonais (Oscila{\c{c}}{\~a}o 
                         Madden-Jullian OMJ), exercem forte influ{\^e}ncia nos 
                         padr{\~o}es de precipita{\c{c}}{\~a}o por todo o globo. A 
                         variabilidade atmosf{\'e}rica na regi{\~a}o tropical na escala 
                         de tempo intrassazonal, cujo per{\'{\i}}odo 
                         caracter{\'{\i}}stico de atividade {\'e} de 30 a 60 dias, 
                         contribui para a ocorr{\^e}ncia de per{\'{\i}}odos alternados 
                         de d{\'e}ficit e excesso de precipita{\c{c}}{\~a}o no Sudeste 
                         da Am{\'e}rica do Sul. Nesta regi{\~a}o, o ver{\~a}o {\'e} bem 
                         definido, com um regime de precipita{\c{c}}{\~a}o superior a 700 
                         mm. Entretanto, no ver{\~a}o de 2014 foi registrado um 
                         epis{\'o}dio de seca sobre a Regi{\~a}o Sudeste do Brasil, 
                         sobretudo no norte do Estado de S{\~a}o Paulo, onde se situa o 
                         Sistema Cantareira, considerado um dos maiores do mundo, por 
                         abastacer cerca de 8,8 milh{\~o}es de consumidores. Neste estudo, 
                         investigou-se as influ{\^e}ncias da OMJ sobre a Regi{\~a}o 
                         Sudeste do Brasil, com {\^e}nfase no Sistema Cantareira durante o 
                         referido per{\'{\i}}odo. Foram realizadas an{\'a}lises das 
                         anomalias de precipita{\c{c}}{\~a}o e de radia{\c{c}}{\~a}o de 
                         onda longa (ROL) no topo da atmosfera, numa {\'a}rea compreendida 
                         entre as longitudes 50°W/40°W e latitudes 26°S/16°S durante o 
                         ver{\~a}o de 2014. As an{\'a}lises indicaram que as 
                         oscila{\c{c}}{\~o}es intrassazonais estiveram inativas desde 
                         meados de dezembro de 2013 at{\'e} mar{\c{c}}o de 2014, 
                         impactando negativamente o regime de precipita{\c{c}}{\~a}o 
                         sobre a Regi{\~a}o Sudeste do Brasil e, desta forma, sendo um dos 
                         fatores respons{\'a}veis para o d{\'e}ficit de chuva verificado 
                         no Sistema Cantareira ao longo do ver{\~a}o de 2014./ Patterns of 
                         atmospheric circulation and oceanic large scale, including the 
                         intraseasonal oscillations (Madden-Jullian Oscillation - MJO), 
                         exert a strong influence on precipitation patterns across the 
                         globe. The atmospheric variability in the tropical region on 
                         intraseasonal time scale, whose characteristic activity period is 
                         30-60 days contributes to the occurrence of alternating periods of 
                         deficit and excess rainfall in southeastern South America in this 
                         region, summer is well defined, with a system of more than 700 mm 
                         rainfall. However, in summer 2014 was recorded an episode of 
                         drought on the Southeast of Brazil, particularly in the northern 
                         state of S{\~a}o Paulo, where the Cantareira System, one of the 
                         largest in the world is located, supply 8.8 million consumers. In 
                         this study, we investigate the influences of the MJO on the 
                         Southeast region of Brazil, with emphasis on Cantareira System 
                         during that period. Analysis of the precipitation anomalies and 
                         longwave radiation (OLR) at the top of the atmosphere in between 
                         longitudes 50°W/40°W and latitudes 26°S/16°S during the summer 
                         2014 field were performed. The analyzes indicated that the 
                         oscillations intraseasonal been inactive since mid-December 2013 
                         until March 2014, negatively impacting the regime of precipitation 
                         over southeastern Brazil and thus being one of the factors 
                         responsible for the deficit of rainfall recorded in Cantareira 
                         System throughout the summer 2014.",
  conference-location = "Recife, PE",
      conference-year = "3-6 nov., 2014",
           targetfile = "Santos_Analise.pdf",
        urlaccessdate = "24 abr. 2024"
}