@InProceedings{SiqueiraFLSSHFLFC:2010:EfBiBu,
               author = "Siqueira, Ricardo Almeida de and Freitas, Saulo Ribeiro de and 
                         Longo, Karla Maria and Silva, Cl{\'a}udio M. S. and Santos, 
                         Jos{\'e} Guilherme M. and Hoelzemann, Judith Johanna and Franca, 
                         Daniela A. and Lima, Rafael Stockler Santos and Fonseca, Rafael 
                         Mello de and Castro, Aline A.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Federal do Rio 
                         Grande do Norte (UFRN)} and {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)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Effects of biomass burning aerosols and land cover use change on 
                         the hydrological cycle and surface fluxes in the Amazon Region",
            booktitle = "Abstracts...",
                 year = "2010",
         organization = "The Meeting of the Americas.",
            publisher = "AGU",
             keywords = "regional modeling.",
             abstract = "The biomass burning, which occur mostly in tropical areas of the 
                         planet, are important sources of particulate matter to the 
                         atmosphere. In South America, during the Austral winter, thousands 
                         of vegetation fires occur in the forest ecosystems. These fires 
                         occur primarily in the Amazon and Central Brazil regions, however, 
                         through atmospheric transport of this emissions, they can produce 
                         a spatial distribution of smoke over an extensive area of about 
                         4-5 millions km2, much higher than the area where they fires took 
                         place. During the combustion process, aerosol particles are 
                         emitted into the atmosphere and they can interact efficiently with 
                         solar radiation and affect the dynamic and microphysical processes 
                         of cloud formation and air quality. Land cover use changes can 
                         affect the energy balance due modification of surface albedo and 
                         evapotranspiration capacity, which can influence the fluxes of 
                         latent heat and sensible heat emitted by surface and the 
                         hydrological cycle. In this study, we estimate emissions of 
                         biomass burning aerosols using projected scenarios of land use 
                         (correspondent to the years 2007 to 2030) and investigate the 
                         effects of land cover use change on the surface fluxes, which also 
                         affect the hydrological cycle and near surface thermodynamics 
                         properties over South America, especially in the Amazon region. 
                         This study was performed numerically with the regional circulation 
                         model CCATT-BRAMS. In this modeling system the radiation 
                         parameterization takes into account the interaction between 
                         biomass burning aerosols and short and long wave radiation. The 
                         impact of biomass burning aerosols is also computed through an 
                         auto-conversion formulation based on the cloud condensation nuclei 
                         (CCN) availability at cloud base in the convective 
                         parameterization. The surface scheme (LEAF-3) was tuned using 
                         field campaign observational data, in particular, the water 
                         extraction by vegetation using a new parameterization of root 
                         profiles. Model results showed a reduction of precipitation in the 
                         projected scenarios and a net increase of near-surface 
                         temperature. These changes are associated with an augment of 
                         sensible heat due land/cover use change as well as the effect of 
                         aerosol on the hydrological cycle.",
  conference-location = "Foz do Igua{\c{c}}u, PR",
      conference-year = "8-12 Aug.",
             language = "en",
           targetfile = "siqueira_effects.pdf",
        urlaccessdate = "28 abr. 2024"
}