@InProceedings{OliveiraLimaSilv:2011:DiFrEv,
               author = "Oliveira, Priscilla Teles de and Lima, Kellen Carla and Silva, 
                         Claudio Moises Santos e",
          affiliation = "{Universidade Federal do Rio Grande do Norte (UFRN)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidade Federal do Rio Grande do Norte (UFRN)}",
                title = "Distribui{\c{c}}{\~a}o de frequ{\^e}ncia de eventos intensos de 
                         precipita{\c{c}}{\~a}o sobre a regi{\~a}o Nordeste do Brasil",
            booktitle = "Anais...",
                 year = "2011",
         organization = "Simp{\'o}sio Internacional de Climatologia, 4.",
             keywords = "eventos intensos, climatologia, heavy events, climatology.",
             abstract = "O Nordeste Brasileiro (NEB) apresenta regimes de chuvas com alta 
                         varia{\c{c}}{\~a}o espacial e temporal, o que torna a 
                         regi{\~a}o mais suscept{\'{\i}}vel {\`a} atua{\c{c}}{\~a}o 
                         de eventos extremos; por{\'e}m, existem poucos estudos sobre a 
                         climatologia destes epis{\'o}dios na regi{\~a}o. Neste sentido, 
                         o objetivo do trabalho foi realizar a climatologia dos eventos 
                         intensos de precipita{\c{c}}{\~a}o (EPIs) sobre o NEB. Devido 
                         aos diferentes regimes de precipita{\c{c}}{\~a}o, o NEB foi 
                         dividido em tr{\^e}s {\'a}reas. Foram utilizados dados 
                         di{\'a}rios de precipita{\c{c}}{\~a}o observados interpolados 
                         em pontos de grade oriundos do CPTEC/INPE referente ao 
                         per{\'{\i}}odo de 1990 a 2008. Para identificar os EPIs foi 
                         aplicada a t{\'e}cnica dos quantis com valores acima do 95° 
                         percentil. Assim, a distribui{\c{c}}{\~a}o anual, mensal e 
                         sazonal dos EPIs foi analisada. Os resultados mostraram que a 
                         distribui{\c{c}}{\~a}o mensal de EPIs foi coerente com a 
                         climatologia mensal de precipita{\c{c}}{\~a}o e que cada 
                         {\'a}rea apresentou diferente varia{\c{c}}{\~a}o sazonal para 
                         os eventos analisados. Os EPIs identificados estiveram associados 
                         a fen{\^o}menos de varia{\c{c}}{\~a}o interanual (El Niņo e La 
                         Niņa) e apresentaram tend{\^e}ncia de aumento no decorrer dos 
                         anos. ABSTRACT: The Northeast Brazil (NEB) is the South America 
                         area with greatest susceptibility to extreme events, however there 
                         are few studies on the climatology of these episodes in the 
                         region. In this sense, the aim of this study is performing the 
                         climatology of heavy rainfall events (HREs) on the NEB. The 
                         precipitation daily used in this study consists of rain gauge that 
                         is interpolated to a 0.5o x0.5o regular grid in the CPTEC/INPE and 
                         coverage the 1990 to 2008 period. Due to the different 
                         precipitation regimes, the NEB was divided into three areas. In 
                         order to identify the HREs, the quantiles technique with values 
                         above the 95th percentile has been applied. Thus, annual, monthly 
                         and seasonal distributions of HREs were performed. The results 
                         showed that the monthly distribution of HREs was consistent with 
                         the monthly climatology of rainfall, and that each area had 
                         different seasonal variation for the events analyzed. The HREs 
                         identified were associated with interannual variation phenomena 
                         (El Niņo and La Niņa) and tended to increase over the years.",
  conference-location = "Jo{\~a}o Pessoa-PB",
      conference-year = "2011",
                label = "lattes: 4524628383146981 2 OliveiraLimaSilv:2011:DiFrEv",
             language = "pt",
           targetfile = "oliveira_distribuicao.pdf",
                  url = "http://www.sic2011.com",
        urlaccessdate = "20 maio 2024"
}