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@MastersThesis{Lima:2015:VaInCi,
               author = "Lima, Jeane Rafaele Ara{\'u}jo",
                title = "Variabilidade interanual da circula{\c{c}}{\~a}o de 
                         mon{\c{c}}{\~a}o da Am{\'e}rica do Sul",
               school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                 year = "2015",
              address = "S{\~a}o Jos{\'e} dos Campos",
                month = "2015-10-29",
             keywords = "variabilidade interanual, precipita{\c{c}}{\~a}o, 
                         mon{\c{c}}{\~a}o da Am{\'e}rica do Sul, interannual 
                         variability, rainfall, monsoon in South America.",
             abstract = "O Sistema de Mon{\c{c}}{\~a}o da Am{\'e}rica do Sul (SMAS) 
                         {\'e} respons{\'a}vel por influenciar a circula{\c{c}}{\~a}o 
                         atmosf{\'e}rica e a precipita{\c{c}}{\~a}o sobre a maior parte 
                         da Am{\'e}rica do Sul (AS) tropical durante a esta{\c{c}}{\~a}o 
                         de ver{\~a}o. Estudos que visem compreender a variabilidade 
                         temporal deste sistema s{\~a}o de grande valia para o meio 
                         cient{\'{\i}}fico, uma vez que, n{\~a}o est{\~a}o totalmente 
                         claros os processos que controlam o clima de mon{\c{c}}{\~o}es. 
                         Assim, o principal objetivo desta pesquisa {\'e} investigar os 
                         poss{\'{\i}}veis fatores clim{\'a}ticos de grande escala e os 
                         mecanismos de intera{\c{c}}{\~a}o remota, que podem estar 
                         associados {\`a} variabilidade interanual durante a 
                         esta{\c{c}}{\~a}o de ver{\~a}o. Neste sentido busca-se 
                         compreender as principais diferen{\c{c}}as entre os extremos de 
                         chuva e de seca sobre o Sudeste da Bacia Amaz{\^o}nica (SAB), 
                         Centro-Oeste (COB) e Sudeste (SE) do Brasil, {\'a}reas que 
                         s{\~a}o influenciadas pelo regime de mon{\c{c}}{\~a}o. Para 
                         tais an{\'a}lises foram utilizadas correla{\c{c}}{\~o}es de 
                         Pearson, t{\'e}cnica de quantis e an{\'a}lise de compostos 
                         m{\'e}dios durante o per{\'{\i}}odo de 1979 a 2014. Os 
                         resultados obtidos atrav{\'e}s da correla{\c{c}}{\~a}o entre a 
                         anomalia da precipita{\c{c}}{\~a}o no SAB e a anomalia de 
                         temperatura da superf{\'{\i}}cie do mar (ATSM) e, das 
                         componentes do vento em 850 hPa e 300 hPa indicam a 
                         influ{\^e}ncia dos eventos El Niņo-Oscila{\c{c}}{\~a}o Sul 
                         (ENOS). As anomalias de precipita{\c{c}}{\~a}o no COB n{\~a}o 
                         apresentaram correla{\c{c}}{\~o}es significativas com as ATSM. 
                         Por{\'e}m, na an{\'a}lise de compostos m{\'e}dios, um 
                         padr{\~a}o semelhante aos ENOS do tipo Modoki foram observados. 
                         Em 850 hPa observou-se a presen{\c{c}}a de uma 
                         circula{\c{c}}{\~a}o cicl{\^o}nica (anticl{\^o}nica) 
                         an{\^o}mala sobre a regi{\~a}o central da AS durante os 
                         ver{\~o}es chuvosos (secos). No SE do Brasil foi observado um 
                         dipolo de ATSM sobre o Atl{\^a}ntico Sul, assim como, 
                         verificou-se a presen{\c{c}}a de circula{\c{c}}{\~o}es 
                         an{\^o}malas com estrutura barotr{\'o}pica equivalente sobre 
                         estas {\'a}reas de ATSM. Este padr{\~a}o {\'e} identificado nos 
                         casos de ver{\~o}es secos no SE. Em 300 hPa observou-se o trem de 
                         onda entre as latitudes de 30\$^{o}\$S-60\$^{o}\$S com 
                         curvatura de arco a partir da longitude de 120\$^{o}\$W 
                         atingindo a AS. A an{\'a}lise da variabilidade interanual dos 
                         ver{\~o}es foi investigada e os resultados indicaram que na 
                         {\'u}ltima d{\'e}cada ocorreram mais ver{\~o}es chuvosos do que 
                         secos na regi{\~a}o do SBA. J{\'a} a regi{\~a}o SE vem sofrendo 
                         um d{\'e}ficit de precipita{\c{c}}{\~a}o desde os {\'u}ltimos 
                         cinco ver{\~o}es, sendo o ver{\~a}o de 2013/2014 considerado o 
                         mais seco dos {\'u}ltimos 35 ver{\~o}es. ABSTRACT: The South 
                         America Monsoon System (SAMS) is responsible for influencing the 
                         atmospheric circulation and precipitation over most of tropical 
                         South America (SA) during the summer season. Studies aiming to 
                         understand the temporal variability of this system have great 
                         value for the scientific community, because the processes that 
                         controls the monsoon climate are not totally clear. Thus, the main 
                         objective of this research is to investigate the possible 
                         large-scale climatic factors and the remote interaction 
                         mechanisms, which may be associated with summer season interannual 
                         variability focussing on identifying the main differences between 
                         dry and wet extremes in the South-eastern Amazon Basin (SAB), 
                         Central- West (WC) and Southeast (SE) Brazil, which are areas 
                         influenced by the monsoon regime. For such analyzes, Pearson 
                         correlations, quantile method and composite analysis were used 
                         during the period from 1979 to 2014. The correlation between 
                         precipitation anomaly in SAB and the sea surface temperature 
                         anomaly (SSTA) and wind at 850hPa and 300 hPa indicates El 
                         Niņo-Southern Oscillation (ENSO) influence. Precipitation 
                         anomalies in WC did not show significant correlation with SSTA. 
                         However, a pattern similar to ENSO Modoki type was observed in the 
                         composite analysis. At 850 hPa, the presence of a anomalous 
                         cyclonic circulation (anticyclonic) was observed over the central 
                         region of SA during wet (dry) summers seasons. Over SE region of 
                         Brazil, a dipole SSTA pattern over the South Atlantic was 
                         identified, as well the presence of anomalous circulations with an 
                         equivalent barotropic structure over these SSTA areas. This 
                         pattern is more evident in case of dry summer on the SE. At 300 
                         hPa, the wave train between 30\$^{o}\$S-60\$^{o}\$S was 
                         observed presenting a curvature feature from 120\$^{o}\$W 
                         reaching SA. Analysis of the summer interannual variability the 
                         manifestation of indicated wet summers more frequently than dry 
                         summers in the SAB during the last decade. On the other hand the 
                         SE region experienced rainfall deficit during the last five summer 
                         seasons, with the summer of 2013/2014 considered the driest over 
                         the last 35 summers.",
            committee = "Coelho, Caio Augusto dos Santos (presidente) and Gan, Manoel 
                         Alonso (orientador) and Castro, Christopher Alexander Cunningham",
           copyholder = "SID/SCD",
         englishtitle = "Variability on year of south american monsoon circulation",
             language = "pt",
                pages = "171",
                  ibi = "8JMKD3MGP3W34P/3KB7DDE",
                  url = "http://urlib.net/rep/8JMKD3MGP3W34P/3KB7DDE",
           targetfile = "publicacao.pdf",
        urlaccessdate = "01 dez. 2020"
}


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