@Article{KouskyCava:1988:PrAtCi,
               author = "Kousky, Vernon Edgar and Cavalcanti, Iracema Fonseca Albuquerque",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Precipitation and atmospheric circulation anomaly patterns in the 
                         South American Sector",
              journal = "Revista Brasileira de Meteorologia",
                 year = "1988",
               volume = "3",
               number = "1",
                pages = "199--206",
             keywords = "Am{\'e}rica do Sul, precipita{\c{c}}{\~a}o, anomalia da 
                         circula{\c{c}}{\~a}o atmosf{\'e}rica, South America, 
                         precipitation, atmospheric circulation anomaly.",
             abstract = "Uma an{\'a}lise de fun{\c{c}}{\~o}es emp{\'{\i}}ricas 
                         ortogonais (EOF) rodadas {\'e} feita para o setor sulamericano, 
                         baseada no vetor que inclui anomalias de radia{\c{c}}{\~a}o de 
                         ondas longas emergentes (OLR) e as componentes zonal e meridional 
                         do vento. Desta maneira, os padr{\~o}es EOF cont{\'e}m campos 
                         consistentes da circula{\c{c}}{\~a}o troposf{\'e}rica superior 
                         e um substituto para nebulosidade convectiva (OLR). Os primeiros 
                         quatro padr{\~o}es EOF s{\~a}o apresentados. Dois destes 
                         padr{\~o}es (primeira e terceira EOF) s{\~a}o consistentes com 
                         estudos te{\'o}ricos e de modelagem para aquecimento convectivo 
                         an{\^o}malo nos tr{\'o}picos. Estes padr{\~o}es exibem 
                         variabilidade temporal em ambas as escalas inter-anual e 
                         intra-sazonal. Os outros dois padr{\~o}es (segunda e terceira 
                         EOF) mostram pesos nos sub-tr{\'o}picos para latitudes 
                         m{\'e}dias do Hemisf{\'e}rio Sul. As s{\'e}ries temporais das 
                         componentes principais para estas EOFs rodadas mostram 
                         variabilidade intra-sazonal e em menores escalas de tempo. 
                         ABSTRACT: A rotated empirical orthogonal function analysis is 
                         performed for the South American sector based on an array that 
                         includes outgoing longwave radiation (OLR) anomalies, and 250 mb 
                         zonal and meridional wind components. In this manner the resulting 
                         EOF patterns contain physically consistent fields of upper 
                         tropospheric circulation and a proxy for convective cloudiness 
                         (OLR). The first four EOF patterns are presented here. Two of the 
                         patterns (first and third EOFs) are consistent with theoretical 
                         and modeling studies for anomalous convective heating in the 
                         tropics. These patterns exhibit temporal variability on both the 
                         interannual and intraseasonal time scales. The remaining two 
                         patterns (second and fourth EOFs) feature loadings in the 
                         subtropics to mid-latitudes of the Southern Hemisphere. The 
                         principal component time series for these rotated EOFs display 
                         intraseasonal and shorter time scale variability.",
           copyholder = "SID/SCD",
                 issn = "0102-7786",
                label = "2857",
           targetfile = "PRECIPITATION AND ATMOSPHERIC CIRCULATION ANOMALY.pdf",
        urlaccessdate = "29 jun. 2024"
}