@Article{LopesAnSoCeKaCaMo:2022:MuNiEf,
               author = "Lopes, Aixa Braga and Andreoli, Rita V. and Souza, Rodrigo A. F. 
                         and Ceron, Wilmar L. and Kayano, Mary Toshie and Canchala, 
                         Teresita and Moraes, Djanir Sales",
          affiliation = "{Instituto Nacional de Pesquisas da Amaz{\^o}nia (INPA)} and 
                         {Universidade do Estado do Amazonas (UEA)} and {Universidade do 
                         Estado do Amazonas (UEA)} and {Instituto Nacional de Pesquisas da 
                         Amaz{\^o}nia (INPA)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Universidad del Valle} and {Instituto 
                         Nacional de Pesquisas da Amaz{\^o}nia (INPA)}",
                title = "Multiyear La Nina effects on the precipitation in South America",
              journal = "International Journal of Climatology",
                 year = "2022",
               volume = "42",
               number = "16",
                pages = "9567--9582",
                month = "Dec.",
             keywords = "multiyear La Niņa, precipitation, South America.",
             abstract = "The effect of multiyear La Niņa (LN) events on precipitation in 
                         South America (SA) was assessed considering 10 persistent LN 
                         events over two successive years, referred to as Y1 and Y2 for the 
                         19012012 period. Y1 spans from the austral winter of the first 
                         year to autumn of the second year, and Y2 spans from the austral 
                         winter of the second year to autumn of the third year. Comparisons 
                         were performed season by season of the Y1 and Y2. Composites 
                         revealed that the teleconnections related to a multiyear LN event 
                         during its Y1 and Y2 years, responsible for distinct seasonal 
                         precipitation anomaly patterns in SA, were associated with 
                         different tropical ocean conditions. In spring, the negative sea 
                         surface temperature (SST) dipole in the Indian Ocean during the Y2 
                         was not observed during Y1. Different LN-related SST anomaly 
                         patterns in the tropical Atlantic between Y1 and Y2 occurred in 
                         the other seasons. Over northern/northeastern SA, the positive 
                         precipitation anomalies became weaker (stronger) during austral 
                         summer and autumn (winter and spring) of the Y2 than Y1 and were 
                         associated with changes in the Walker cells. During austral spring 
                         and summer, southeastern presented drier conditions during the Y2 
                         than Y1. In the spring of Y2, two Rossby wave trains, one 
                         associated with the LN-related anomalous cooling in the equatorial 
                         Pacific and another triggered by the upper-level anticyclone in 
                         the tropical Indian Ocean, characterized the circulation pattern 
                         over SA which explains the difference in precipitation anomalies 
                         between the Y2 and Y1. These drier (wetter) conditions during 
                         austral spring and summer (winter and spring), particularly over 
                         southern and southeastern Brazil (Colombia) in the Y2, might have 
                         more severe effects on the regional hydrological cycle than those 
                         in the Y1. The results here indicate that accurate prediction of 
                         LN duration is crucial in a climate-monitoring context.",
                  doi = "10.1002/joc.7847",
                  url = "http://dx.doi.org/10.1002/joc.7847",
                 issn = "0899-8418",
             language = "en",
           targetfile = "Intl Journal of Climatology - 2022 - Lopes - Multiyear La Ni a 
                         effects on the precipitation in South America.pdf",
        urlaccessdate = "03 maio 2024"
}