@InProceedings{LentiniAlmePezzSouz:2006:ShClVa,
               author = "Lentini, Carlos Alessandre Domingos and Almeida, Roberto 
                         Ant{\^o}nio Ferreira de and Pezzi, Luciano Ponzi and Souza, 
                         Ronald Buss de",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "Short-term climate variability in the southeastern South America",
            booktitle = "Proceedings...",
                 year = "2006",
               editor = "Vera, Carolina and Nobre, Carlos",
                pages = "277--282",
         organization = "International Conference on Southern Hemisphere Meteorology and 
                         Oceanography, 8. (ICSHMO).",
            publisher = "American Meteorological Society (AMS)",
              address = "45 Beacon Hill Road, Boston, MA, USA",
             keywords = "Brazil-Malvinas confluence, SST, Parana-Uruguay rivers, climate 
                         variability, ENSO.",
             abstract = "An investigation of short-term climate variability in a region of 
                         southeastern South America (SESA), extending from 25 S to 50 S, 
                         west of 45 W, has been carried out. This region comprises part of 
                         Argentina, southern Brazil, Uruguay, and the Brazil-Malvinas 
                         Confluence extension. The original datasets of sea surface 
                         temperature (SST), latitude of separation of the Brazil and 
                         Malvinas currents and river discharge were converted into 
                         normalized monthly anomalies. Analysis of monthly river discharge, 
                         position of the confluence, and SST anomalies shows a consistent 
                         relationship with ENSO variability. It also reveals the influence 
                         of southwestern Atlantic SST anomalies and the geometry of the 
                         confluence in the local hydrological conditions. Squared coherency 
                         computations between the SST anomalies, the position of the 
                         confluence, and monthly river discharge anomalies indicate a high 
                         level of complexity between the atmospheric and oceanic forcings. 
                         Phase analyses indicate a general tendency for having these two 
                         types of forcing in the same coherent pair. For instance, 
                         sub-regions 2, 3, and 4 show an atmospheric to oceanic type of 
                         forcing with the river discharge leading the SST anomalies. On the 
                         other hand, sub-regions 1 and 4 suggest a different scenario, 
                         where the river discharge is now led by SST anomalies. Like the 
                         SST anomalies, the position of the confluence is also associated 
                         with the river discharge anomalies and shows that both types of 
                         forcing occur at 1-yr and 3-5-yr periods. On the other hand, the 
                         2-yr period shows a different and coherent scenario. The river 
                         discharge anomaly time series leads the latitude of separation of 
                         the two currents, suggesting an atmospheric to oceanic forcing. 
                         Despite the results suggest a slightly general tendency for an 
                         atmospheric type of forcing, they also reveal that the SST 
                         anomalies and the confluence position have some influence in the 
                         river discharge on ENSO time scales.",
  conference-location = "Foz do Igua{\c{c}}u",
      conference-year = "24-28 Apr. 2006",
           copyholder = "SID/SCD",
             language = "en",
         organisation = "American Meteorological Society (AMS)",
                  ibi = "cptec.inpe.br/adm_conf/2005/10.21.19.55",
                  url = "http://urlib.net/ibi/cptec.inpe.br/adm_conf/2005/10.21.19.55",
           targetfile = "277-282.pdf",
                 type = "Climate change in the SH",
        urlaccessdate = "29 jun. 2024"
}