@InProceedings{CavalcantiMare:2003:TyFeSo,
               author = "Cavalcanti, Iracema Fonseca Albuquerque and Marengo, Jos{\'e} 
                         Antonio",
          affiliation = "Centro de Previs{\~a}o de Tempo e Estudos 
                         Clim{\'a}ticos/Instituto Nacional de Pesquisas Espaciais, 
                         Cachoeira Paulista, S{\~a}o Paulo",
                title = "Typical features of the South America monsoon system, and 
                         relations with the low level jet and South Atlantic convergence 
                         zone in a climate AGCM simulation",
            booktitle = "Proceedings...",
                 year = "2003",
                pages = "70--71",
         organization = "International Conference on Southern Hemisphere Meteorology and 
                         Oceanography, 7.",
            publisher = "American Meteorological Society",
             keywords = "Meteorologia.",
             abstract = "The main features of the South America Monsoon system are 
                         simulated by the CPTEC/COLA AGCM in a climate ensemble simulation. 
                         Results of nine integrations with T62L28 model resolution for the 
                         period 1982-1991 are analysed in an ensemble mode and also 
                         considering daily results of the individual members. Low and upper 
                         levels wind fields in the summer season are typical and differ 
                         completelly of those of the winter. In the summer the Bolivian 
                         High and the Upper Atlantic Trough is well represented, as well as 
                         the position of the Atlantic subtropical High which affects the 
                         direction of the trade winds over the northeast brazilian coast. 
                         Extreme cases of precipitation anomalies over South America in the 
                         summer season are related to the behaviour of the main 
                         characteristics of the monsoon. An opposite relation occur between 
                         southeastern and southern Brazil during these extreme cases. The 
                         anomalies are associated with the direction of the low level flow 
                         from the Atlantic and Amazonia region, toward south, in the case 
                         of dry southeast and wet south, and toward southeast, in the case 
                         of dry south and wet southeast. It is seen, in these results, the 
                         opposite relation between the South Atlantic Convergence Zone 
                         (SACZ) and the Low Level Jet (LLJ) to the east of Andes. The 
                         extreme cases occur in ENSO episodes, suggesting a large scale 
                         influence on the South America Monsoon system. The overestimation 
                         of the SACZ by the model is also consistent with a reduced number 
                         of LLJ cases in the summer, when compared to the reanalyses 
                         results. Although the model, in ENSO years and in the climatology, 
                         represent well these features, in other years, the anomaly 
                         precipitation over central and southeastern Brazil is poorly 
                         simulated by the ensemble mean. The large dispersion among the 
                         members and the different behaviour of the synoptic systems over 
                         the region in each integration, give a low degree of 
                         predictability for this region, in contrast to the northeastern 
                         and the southern regions which have higher degree of 
                         predictability. Individual analysis of the memberīs ensemble and 
                         the behaviour of the monsoon system in each case are performed to 
                         investigate the possibility of improvement in the seasonal 
                         prediction of the region.",
  conference-location = "Wellington, New Zealand",
      conference-year = "24-28 Mar",
           copyholder = "SID/SCD",
             language = "en",
                  ibi = "x6e6X3pFwXQZ3DUS8rS5/yakET",
                  url = "http://urlib.net/ibi/x6e6X3pFwXQZ3DUS8rS5/yakET",
           targetfile = "2003_cavalcanti.pdf",
                 type = "PRE",
                  url = "http://ams.confex.com/ams/pdfview.cgi?username=59611",
        urlaccessdate = "29 jun. 2024"
}