@InProceedings{NobreAlmeUrbaMala:2010:UnVaTr,
               author = "Nobre, Paulo and Almeida, Roberto Antonio Ferreira De and Urbano 
                         Neto, Domingos Fernandes and Malagutti, Marta",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Uncoupled variations of the Tropical Equatorial climate in a 
                         coupled ocean-atmosphere model",
            booktitle = "Abstracts...",
                 year = "2010",
         organization = "The Meeting of the Americas.",
            publisher = "AGU",
             keywords = "numerical modeling, air/sea interactions, general circulation, 
                         upper ocean, mixed layer processes.",
             abstract = "This communication evaluates the mechanisms associated with the 
                         inherent difficulty of global coupled ocean-atmosphere models to 
                         simulate the thermal vertical structure of the equatorial 
                         Atlantic. The study is done with use of the coupled GCM developed 
                         at CPTEC, which consists of CPTECs global atmosphere model fully 
                         coupled over the global tropics (40S-40N) with GFDLs MOM3 ocean 
                         GCM. Coupled and uncoupled simulations were calculated in ensemble 
                         mode, with ten members runs, 8 months long each starting at every 
                         calendar month for the period 1982-2001. Systematic differences 
                         between simulations done with the CGCM and OGCM forced with 
                         prescribed atmospheric fluxes, as well as against PIRATA array 
                         data over the tropical Atlantic are used to argue that the 
                         systematic errors of the coupled model over the equatorial 
                         Atlantic can be separable into a surface and under-thermocline 
                         ones. Evidences are shown to suggest that surface temperature 
                         systematic errors are attributable to insufficiencies on AGCM 
                         stratus parameterization, which generated excess solar radiation 
                         over the regions of stratus decks over cold waters along the 
                         southwestern coast of Africa. For the under-thermocline processes, 
                         however, it is shown a remarkable locking to the seasonal cycle, 
                         with systematic errors maximum amplitude occurring in April/May, 
                         regardless of the month of model initialization. Linkages to AGCM 
                         rainfall deficiencies over the equatorial landmasses are 
                         speculated.",
  conference-location = "Foz do Igua{\c{c}}u, BR",
      conference-year = "8-12 aug 2010",
             language = "en",
        urlaccessdate = "05 maio 2024"
}