@InProceedings{Cavalcanti:2010:LaScSy,
               author = "Cavalcanti, Iracema Fonseca de Albuquerque",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Large scale and synoptic features associated with extreme 
                         precipitation and temperature over south america-observation and 
                         model results (Invited)",
            booktitle = "Abstracts...",
                 year = "2010",
         organization = "The Meeting of the Americas.",
            publisher = "AGU",
             keywords = "climatology, precipitation, synoptic-scale meteorology.",
             abstract = "Extreme cases of precipitation and temperature over South America 
                         can be classified as flooding, droughts, heat waves and cold air 
                         intrusions. Flooding and drought have occurred in the whole 
                         continent, including tropical and extratropical regions, while 
                         heat waves and cold air intrusions affect mainly the subtropical 
                         and extratropical areas. The flooding cases occur associated with 
                         synoptic and mesoscale systems influenced by large scale 
                         conditions which undergo several climate variability oscillations. 
                         Droughts are associated with lack of these synoptic and mesoscale 
                         systems, also influenced by persistent large scale conditions. 
                         Cold air intrusions, associated with frontal systems and cyclonic 
                         vortices also have the contribution of large scale climate 
                         variability. ENSO conditions have been related to droughts in 
                         Northeast South America and flooding in the South. Other extreme 
                         cases have been connected with the Atlantic SST anomalies. Some of 
                         recent extreme cases over South America were the drought and heat 
                         waves in Southeastern Brazil in 2000/2001 and 2009/2010; the 
                         flooding in Argentina in 2003 and 2007; the flooding/drought in 
                         Northeastern Brazil in 2009/2010; the drought in Amazonia in 2005. 
                         Statistics of extreme precipitation over South America and mainly 
                         over La Plata Basin, including trends, model results and climate 
                         projections obtained in the CLARIS project are presented. 
                         Frequency of monthly (extreme, severe, moderate) wet/dry cases 
                         based on Standardized Precipitation Index (SPI) from model 
                         simulations are compared to observations. The influence of 
                         tropical and extratropical large scale climate variability, such 
                         as the Pacific and Atlantic SST, the PSA pattern, the South 
                         Hemisphere annular mode, the NAO, on the extremes over South 
                         America, are discussed.",
  conference-location = "Foz do Igua{\c{c}}u",
      conference-year = "8-12 Aug. 2010",
             language = "en",
        urlaccessdate = "28 abr. 2024"
}