@Article{MeloMare:2008:SiClDu,
               author = "Melo, Maria Luciene Dias de and Marengo, Jos{\'e} Antonio",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE/CPTEC)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE/CPTEC)}",
                title = "The influence of changes in orbital parameters over South American 
                         climate using the CPTEC AGCM: simulation of climate during the mid 
                         holocene",
              journal = "Holocene",
                 year = "2008",
               volume = "18",
               number = "4",
                pages = "501--516",
                month = "Jun",
             keywords = "mid holocene, South America, CPTEC AGCM, paleoclimate, orbital 
                         parameter, paleoclimate record.",
             abstract = "Climate change has been analysed for the mid Holocene (MH, 6000 
                         years BP) over South America. Simulations have been performed 
                         through modification of the orbital parameters and the CO2 
                         concentration typical of the MH within the CPTEC T062L28 
                         atmospheric general circulation models (AGCM). The results were 
                         compared with previous simulations performed by various climate 
                         centres around the world and with palaeoclimate indicators. The MH 
                         climate simulation shows a wetter behaviour in northeastern South 
                         America with a northward shift of the Intertropical Convergence 
                         Zone (ITCZ). In central and southeastern South America the 
                         simulations show a reduction in precipitation. Some important 
                         changes were detected during the MH: (a) the increase in the 
                         intensity of the circulation of the South Atlantic subtropical 
                         high; (b) the intensification of the northerly flow east of the 
                         Andes, south of 20°S; (c) the decrease in moisture transport from 
                         the Amazon basin to central and south-southeastern Brazil, which 
                         can influence the formation and intensity of the South Atlantic 
                         Convergence Zone (SACZ); (d) the reduced intensity of the 
                         northeasterly trade winds north of 20°S, which can explain the 
                         northward positioning of the ITCZ; and (e) the weakening of the 
                         low-level convergence over the Amazon region, which can explain 
                         the reduction in precipitation in this region during the MH. A 
                         cooling signal was verified during the MH simulation, in 
                         accordance with palaeoclimate evidence, that was related to cold 
                         air surges coming from the South, which cooled regions east of the 
                         Andes and were more common during summer and autumn during the 
                         MH.",
                  doi = "10.1177/0959683608089205",
                  url = "http://dx.doi.org/10.1177/0959683608089205",
                 issn = "0959-6836",
             language = "en",
           targetfile = "artigo_the influence.pdf",
        urlaccessdate = "16 abr. 2024"
}