@InProceedings{VeigaMareOliv:2002:CoCoAt,
               author = "Veiga, Jos{\'e} Augusto and Marengo, Jos{\'e} Antonio and 
                         Oliveira, J. F.",
                title = "Contrasting conditions of atmospheric water balance and moisture 
                         transport in summertime in the Amazon basin during El Ni¤o 1997-98 
                         and La Ni¤a 1998-99",
                 year = "2002",
         organization = "International LBA Scientific Conference, 2.",
             keywords = "METEOROLOGIA.",
             abstract = "In this study we study and assess the components of the 
                         atmospheric water balance and the moisture transport in the Amazon 
                         basin, using the NCEP-NCAR reanalyses and focusing on the 1997-98 
                         and 1998-99 extremes of the Southern Oscillation. The summer of 
                         1998 was characterized as rainfall deficient, with large negative 
                         rainfall departures in southern Amazonia, which persisted during 
                         the autumn peak of the rainy season in northern Amazonia. On the 
                         other hand, the summer of 1999 was considered between normal and 
                         moderately rainy in northern and central Amazonia. Moisture fluxes 
                         indicate the weak moisture input from the tropical Atlantic into 
                         the Amazon region during the 1998 El Ni¤o summer, generating large 
                         rainfall departures in most of the region. In fact, the vertical 
                         cross sections tend to show a weak moisture input into the Amazon, 
                         while the exportation of moisture outside the Amazon by the Low 
                         Level Jet east of the Andes (LLJ)during 1998 was very intense, 
                         showing that besides the Amazon basin receiving less moisture from 
                         the tropical North Atlantic, this little amount was exported 
                         outside the region. Situation in 1999 was not much different from 
                         the normal, showing that rainfall and moisture transport into and 
                         outside the Amazon basin is more sensitive to El Nino and its 
                         related circulation anomalies that to La Nina. Previous studies 
                         using upper air observations and modeling have shown that the 
                         summer of 1998 exhibited more frequent and intense LLJ than the 
                         summer of 1999, consistent with the circulation and rainfall l 
                         composites 1998-1999 presented in here.",
  conference-location = "Manaus, Br",
      conference-year = "7-10 July 2002",
                label = "10240",
           targetfile = "9321.pdf",
        urlaccessdate = "27 abr. 2024"
}