@Article{LaureantiChouNobrCurc:2024:ReThSo,
               author = "Laureanti, Nicole Crisine and Chou, Sin Chan and Nobre, Paulo and 
                         Curchitser, Enrique",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {The State University of New 
                         Jersey}",
                title = "On the relationship between the South Atlantic Convergence Zone 
                         and sea surface temperature during Central-East Brazil extreme 
                         precipitation events",
              journal = "Dynamics of Atmospheres and Oceans",
                 year = "2024",
               volume = "105",
                pages = "e101422",
                month = "Mar.",
             keywords = "Ocean-atmosphere interactions, Precipitation extremes, South 
                         Atlantic Convergence Zone, South Atlantic Ocean.",
             abstract = "The precipitation in Central-East Brazil (CEB) from December to 
                         February is heavily influenced by the South Atlantic Convergence 
                         Zone (SACZ). The SACZ not only causes considerable rainfall but 
                         also has an impact on the underlying ocean. This study examines 
                         the extreme precipitation events in CEB and their relationship 
                         with the SACZ and sea surface temperature (SST). Empirical 
                         Orthogonal Function (EOF) analyses of daily precipitation and 
                         vertical velocity at 500 hPa data diagnose the extremes. The 
                         grouped events of similar positioning and intensity resulted in 
                         170 extremely wet and 172 dry events. Results indicate that the 
                         variability of the SACZ is responsible for extremely wet 
                         precipitation events in CEB. Composites of precipitation, SST, and 
                         wind anomalies at 850-hPa and 200-hPa characterize their 
                         occurrence and resemble SACZ high-intensity variability. 
                         Conversely, extremely dry CEB conditions are associated with SACZ 
                         southern events (51 events) and SACZ inactivity (121 events). The 
                         latter refers to major drought events when upper-level cyclonic 
                         circulation favors dry air descending and inhibiting convection 
                         over CEB. SACZ southern events have similar atmospheric dynamical 
                         patterns as SACZ events but are displaced to the south. The 
                         meridional displacement of the South Atlantic Low-Level Jet 
                         (SALLJ) and its confluence with the northeasterly flow of the 
                         South Atlantic Subtropical High (SASH) are identified as the 
                         causes of the cooling or heating of the underlying ocean. The 
                         intensity of the extreme event is related to the strength of 
                         lower-level wind circulation, while upper-level wind circulation 
                         anomalies favor the lower-level effects. The persistence of the 
                         systems is related to the development of SST anomalies.",
                  doi = "10.1016/j.dynatmoce.2023.101422",
                  url = "http://dx.doi.org/10.1016/j.dynatmoce.2023.101422",
                 issn = "0377-0265",
             language = "en",
           targetfile = "1-s2.0-S0377026523000738-main.pdf",
        urlaccessdate = "04 maio 2024"
}