@Article{CerónKAAAFMS:2021:ReInEx,
               author = "Cer{\'o}n, Wilmar L. and Kayano, Mary Toshie and Andreoli, Rita 
                         V. and Avila-Diaz, Alvaro and Ayes, Irma and Freitas, Edmilson D. 
                         and Martins, Jorge A. and Souza, Rodrigo A. F.",
          affiliation = "{Universidad del Valle} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Universidade do Estado do Amazonas (UEA)} 
                         and {Universidade Federal de Vi{\c{c}}osa (UFV)} and {Instituto 
                         Nacional de Pesquisas da Amaz{\^o}nia (INPA)} and {Universidade 
                         de S{\~a}o Paulo (USP)} and {Universidade Federal 
                         Tecnol{\'o}gica do Paran{\'a} (UFTPR)} and {Universidade do 
                         Estado do Amazonas (UEA)}",
                title = "Recent intensification of extreme precipitation events in the La 
                         Plata Basin in Southern South America (1981–2018)",
              journal = "Atmospheric Research",
                 year = "2021",
               volume = "249",
                pages = "e105299",
                month = "Feb.",
             keywords = "La Plata Basin, Precipitation trends and changes, Extreme daily 
                         rainfall, Climate extreme indices, CHIRPS.",
             abstract = "Changes and trends in ten extreme daily rainfall indices in the La 
                         Plata Basin (LPB) during the 19812018 period were analyzed. These 
                         indices were evaluated for three regions in the LPB, namely the 
                         northern, central, and southern LPB (N-LPB, C-LPB, and S-LPB, 
                         respectively). A decrease in the maximum rainfall over five 
                         consecutive days (RX5day) and an increase in the consecutive dry 
                         days (CDD) were observed in N-LPB, mainly during the austral 
                         winter. An increase in the total wet-day precipitation was found 
                         in S-LPB, particularly during SeptemberNovember (SON), and during 
                         DecemberFebruary (DJF). The number of heavy precipitation days 
                         (R10mm) and CDD indices in S-LPB during SON showed a breaking 
                         point in 1999 and were followed by an increase in R10mm after 
                         1999. Therefore, we discussed the large-scale climatic features 
                         that could be related to the breaking point in the extreme 
                         precipitation indices found in the S-LPB during SON, through 
                         correlation analysis. Our results indicate that R10mm shows 
                         significant positive correlations with the sea surface temperature 
                         (SST) in the Southwestern Subtropical Atlantic Region, mainly 
                         between 32°S22°S and 50 W34°W. The SST anomaly index in this 
                         oceanic region for SON during 19812018 displayed a significant 
                         upward change in 1999. Furthermore, the correlation map between 
                         this index and the vertically integrated moisture flux (VIMF) and 
                         its divergence, shows negative correlations in the S-LPB, which 
                         means a decrease of the moisture divergence in this region. This 
                         implies an increase (decrease) of R10mm, and a decrease (increase) 
                         of CDD in the S-LPB after (before) 1999. This relationship results 
                         from an anticyclone in the Southwestern Atlantic extending into 
                         the LPB up to 60°W, which causes an increase in the northwesterly 
                         moisture flux over central and southern parts of the basin, 
                         enhancing the moisture convergence over S-LPB. These insights have 
                         not been discussed previously, and might be relevant for future 
                         modeling studies and monitoring tasks.",
                  doi = "10.1016/j.atmosres.2020.105299",
                  url = "http://dx.doi.org/10.1016/j.atmosres.2020.105299",
                 issn = "0169-8095",
             language = "en",
           targetfile = "ceron_recent.pdf",
        urlaccessdate = "09 maio 2024"
}