@InProceedings{CoelhoAmbr:2000:ClStIn,
               author = "Coelho, Caio Augusto dos Santos and Ambrizzi, T{\'e}rcio",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE/CPTEC)} and 
                         {University of S{\~a}o Paulo}",
                title = "Climatological studies of the influence of El Niņo southern 
                         oscilation events in the precipitation pattern over south America 
                         during austral summer",
            booktitle = "Anais...",
                 year = "2000",
         organization = "International Conference on Southern Hemisphere Meteorology and 
                         Oceanography, 6.",
             keywords = "el nino, la nina, southern oscillation, South America.",
             abstract = "Many studies have already indicated that the precipitation pattern 
                         over South America, in particular over some regions in Brazil, is 
                         strongly influenced by the extremes of the Southern Oscillation 
                         (SO) (Ropelewski e Halpert, 1987; and Rao e hada, 1990). Coelho et 
                         al. (1999), using datasets from 206 meteorological sations over 
                         Brazil, have developed a seasonal climatologica precipitation 
                         study for El Niņo/La Niņa episodes, classifying them as 
                         strong/moderate or weak. For each season, different 
                         characteristics of the precipitation pattern were found. These 
                         results are in agreement with the present one. Using seasonal and 
                         monthly rainfall anomalies and Outgoing Longwave Radiation (OLR) 
                         data for the austral summer (December-January-February) during the 
                         El Niņo events of 1982/83, 1986/87 and 1991/92, and the La Niņa 
                         events of 1984/85, 1985/86 and 1988/89, and analysis of the lower 
                         and upper level circulation, the associated convection and 
                         rainfall features were made. We will show here seasonal anomalies 
                         composites of these ENSO events. Rainfall observations from 2138 
                         meteorological stations over South America are used, with few of 
                         them going back in time from 1853 to 1996. The precipitation 
                         dataset implemented by Xie and Arkin (1996) for the period 1979 to 
                         1955 is also used in this study, together with the NOAA OLR, and 
                         the (NCEP/NCAR) Reanalysis data, for the period 1968 - 1996.",
  conference-location = "Santiago - Chile",
      conference-year = "3-7 April",
             language = "en",
           targetfile = "chile2000.pdf",
        urlaccessdate = "04 maio 2024"
}