@InProceedings{LongoFreiUlkeHier:2006:TrBiBu,
               author = "Longo, Karla Maria and Freitas, Saulo Ribeiro de and Ulke, Ana 
                         Graciela and Hierro, Rodrigo Federico",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {} and Universidad de 
                         Buenos Aires, Facultad de Cs. Exactas y Naturales, Departamento de 
                         Cs. de la Atm{\'o}sfera y los Oc{\'e}anos",
                title = "Transport of biomass burning products in Southeastern South 
                         America and its relationship with the South American Low Level Jet 
                         East of the Andes",
            booktitle = "Proceedings...",
                 year = "2006",
               editor = "Vera, Carolina and Nobre, Carlos",
                pages = "121--129",
         organization = "International Conference on Southern Hemisphere Meteorology and 
                         Oceanography, 8. (ICSHMO).",
            publisher = "American Meteorological Society (AMS)",
              address = "45 Beacon Hill Road, Boston, MA, USA",
             keywords = "biomass burning, greenhouse gases, climate change, atmospheric 
                         chemistry.",
             abstract = "The aim of the present contribution is to perform an analysis and 
                         characterization of the transport of biomass burning products in 
                         South America, the role played by the low level jet East of the 
                         Andes in the transport and the impact on sub-regions of 
                         Southeastern South America. To this end, on the basis of a 
                         one-year period, the simultaneous occurrence of biomass burning 
                         and low level jet East of the Andes was determined. The 
                         exploratory study of occurrence of low level jet was carried out 
                         using the analyses provided by the Global Data Assimilation System 
                         (GDAS) of the National Centers for Environmental Prediction 
                         (NCEP). This data set has one-degree horizontal resolution and is 
                         available every six hour. The occurrence of the low level jet 
                         events was diagnosed applying criteria well established in the 
                         literature, based on the strength and vertical shear of the wind 
                         field. In agreement with previous climatological characterizations 
                         of the low level jet East of the Andes, for the selected year 
                         (2002), this mesoscale circulation had distinct features that 
                         allowed to classify it in various subsets. These groups typically 
                         take place within different synoptic conditions, covering distinct 
                         regions and some of them contribute to the development of 
                         convective systems. The associated circulation patterns in 
                         conjunction with the occurrence of biomass burning results in the 
                         transport of aerosols and gases towards different regions with 
                         diverse impacts. Some selected situations were subject of further 
                         detailed studies. The CAT-BRAMS modeling system was used to 
                         simulate these cases. The modeling system considers the emission, 
                         transport and transformations of particulate matter (PM2.5) and 
                         gases (CO) with an on-line approach and it is currently run 
                         operatively at Centro de Previs{\~a}o de Tempo e Estudos 
                         Clim{\'a}ticos (CPTEC) with 40 km resolution over South America. 
                         It provides 24-hour predictions of the above mentioned aerosols 
                         and gases as well as the meteorological fields. The resulting 
                         spatial and temporal distributions of aerosols and gases are 
                         studied. The detailed three-dimensional structure and evolution of 
                         the fields provided by the model contribute to depict the 
                         preferred regions and levels in which the transport of the biomass 
                         burning products takes place. It is also possible to analyze the 
                         interactions with clouds or local circulations and the influence 
                         on forcing mechanisms. The predicted concentrations are compared 
                         with the observational data obtained from remote sensing and 
                         in-situ measurements at some sites. This system provides also 
                         information on the aerosol size distribution, which in turn is 
                         related to the sources and nature of aerosols. The comparisons of 
                         the model predictions and measurements are used to analyze the 
                         skill of the model. This study contributes to the evaluation of 
                         the impact of the biomass burning on a regional context as well as 
                         towards the control of the performance and improvement of the 
                         modeling system.",
  conference-location = "Foz do Igua{\c{c}}u",
      conference-year = "24-28 Apr. 2006",
           copyholder = "SID/SCD",
             language = "en",
         organisation = "American Meteorological Society (AMS)",
                  ibi = "cptec.inpe.br/adm_conf/2005/10.31.18.05.10",
                  url = "http://urlib.net/ibi/cptec.inpe.br/adm_conf/2005/10.31.18.05.10",
           targetfile = "121-130.pdf",
                 type = "Atmospheric chemistry in the SH",
        urlaccessdate = "16 maio 2024"
}