Fechar

@ElectronicSource{BormaRCCKBFTOR-::CoEvHe,
             abstract = "We describe hydrometeorological processes in a seasonal floodplain 
                         area with savanna vegetation, near the Bananal Island region, 
                         Brasil, within the transition zone of forest savanna in eastern 
                         Amazonia. Measurements included climatological variables, 
                         evapotranspiration and sensible heat flux, 3 m depth soil moisture 
                         profile, groundwater and flood height. Continuous measurements of 
                         eddy covariance over a 42 m tower and ground observations were 
                         taken during November 2003 to December 2006. The increasing 
                         evapotranspiration in the wet season and particularly in the flood 
                         period showed how there the free surface water dominated the 
                         energy exchanges. In opposition, evapotranspiration decreased, 
                         despite the simultaneous increasing net radiation, air temperature 
                         and water vapour deficit, that did not explain sufficiently the 
                         losses of water to the atmosphere. On the other hand, the 
                         turbulent mixing, the status of soil moisture, that depleted 
                         substantially during the dry season, and adaptive mechanisms of 
                         the vegetation contributted in larger extensions to limit 
                         evapotranspiration. The vegetation over these floodplain forests 
                         in Amazonia can erroneously be thought as ecosystems that have 
                         abundant water availability. Despite the plenty of water in the 
                         rainy season, the soil moisture status in the dry season showed 
                         only a tiny memory of the floodtime. Strong drainage within very 
                         permeable sandy soils helped to explain the depletioning. As long 
                         as it is expected the savanna vegetation is adapted to such strong 
                         seasonal oscilation, in anomalous dry years where the hydrological 
                         pulse is weak, the response of the vegetation as a source for 
                         evapotranspiration may be strongly affected in long dry spells.",
              address = "S{\~a}o Jos{\'e} dos Campos",
          affiliation = "{Universidade de S{\~a}o Paulo} and {Universidade de S{\~a}o 
                         Paulo} and {Embrapa Meio Ambiente} and {Unitins Agro} and 
                         {Universidade Federal do Tocantins} and {Universidade Federal do 
                         Tocantins} and {Universidade de S{\~a}o Paulo} and {Universidade 
                         de S{\~a}o Paulo} and {Universidade de S{\~a}o Paulo} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
               author = "Borma, Laura De Simone and Rocha, Humberto Ribeiro da and Cabral, 
                         Osvaldo Machado Rodrigues and Collicchio, Erich and Kurzatkowski, 
                         Dariusz and Brugger, Paulo Jos{\'e} and Freitas, Helber 
                         Cust{\'o}dio de and Tannus, Rafael and Oliveira, Leuda da Silva 
                         and Renn{\'o}, Camilo Daleles and von-Randow, Celso",
             keywords = "evapotranspiration, sensible heat flux, eddy covariance, soil 
                         moisture, floodplain, savanna, Amazonia, Bananal Island.",
             language = "en",
       lastupdatedate = "2008-04-01",
            publisher = "Instituto and Nacional and de and Pesquisas and Espaciais",
                  ibi = "sid.inpe.br/mtc-m17@80/2008/03.29.23.59",
                  url = "http://urlib.net/ibi/sid.inpe.br/mtc-m17@80/2008/03.29.23.59",
           targetfile = "v1.pdf",
                title = "Controls of the evaporation and heat flux over a floodplain forest 
                         in the Bananal island region, Amazonia",
         typeofmedium = "On-line",
        urlaccessdate = "08 maio 2024"
}


Fechar