@InProceedings{Veiga:2004:SoDyFe,
               author = "Veiga, Jose Augusto Paixao",
          affiliation = "{CPTEC-INPE-Cachoeira Paulista-12630-000-SP-Brasil}",
                title = "Some dynamical features of the South America Monsoon System and 
                         its maintenance during wet and dry seasons",
            booktitle = "Resumos...",
                 year = "2004",
                pages = "25",
         organization = "Workshop Latino Americano em Modelagem Regional de Tempo e Clima 
                         Utilizando o Modelo ETA: Aspectos Fis{\'{\i}}cos e 
                         Num{\'e}ricos, 1.",
             abstract = "Monthly latent heating and radiation cooling rates, specific 
                         humidity, evaporation rate, rainfall rate, wind velocity (u and v 
                         components) in South America were used to explain the origin of 
                         rainfall characteristics of the South American Monsoon system 
                         (SAMS). The rainfall climatology for the area allowed the 
                         identification of two seasons with marked precipitation regimes: a 
                         well defined rainy season in December, January and February, such 
                         feature is related with the strong diabatic heating occurring 
                         during this season, and a dry season in June, July and August, 
                         characterized for an intense radiative cooling, which is related 
                         with the descent branch of the Hadley cell. Plotting a 
                         meridianal-vertical and a zonal-vertical section, we can perceive 
                         that during the wet-monsoon season a direct thermal circulation, 
                         with rising motion in the monsoon region and sinking motion in the 
                         Atlantic-East coast is formed. Such thermal cell is maintained 
                         mainly by the latent heat released by th e robust cumulus-clouds 
                         controlled by the South Atlantic Convergence Zone (SACZ) and by 
                         the moisture convergence. In the wet-monsoon season, the monsoon 
                         region works as a heat source mainly due to the latent heating, 
                         and rising motion is needed to balance it. In the Atlantic-East 
                         coast the sinking motion balances the radiative cooling. At the 
                         end of the work a schematic diagram is made to show how the 
                         thermal circulation is formed during the wet-monsoon season and 
                         how it is maintained.",
  conference-location = "INPE-CPTEC-Cachoeira Paulista",
      conference-year = "21-26 mar.",
           copyholder = "SID/SCD",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
             language = "en",
         organisation = "INPE-CPTEC",
           targetfile = "11927.pdf",
        urlaccessdate = "11 maio 2024"
}