Modelagem lagrangeana aplicada à dispersão de contaminantes em diferentes condições de estabilidade atmosférica

• Ano de defesa: 2008
• Autor(a) principal: Moreira, Virnei Silva
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Física; UFSM; Programa de Pós-Graduação em Física
• Palavras-chave em Português: Camada limite planetária; Dispersão de poluentes; Micrometeorologia; CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA
• Link de acesso: http://repositorio.ufsm.br/handle/1/9186

In this dissertation, it was estimated contaminants concentration in different stability conditions of the Planetary Boundary Layer. In order to do this, it was used the Lagrangian stochastic model. The experiments by Copenhagen and Prairie Grass were simulated, and to the last one it was used only experiments in which the wind speed was higher than 6m/s. In these simulations it was adopted the turbulence parameterization by Hanna (1982). The results were compared with the concentration field measured and simulated by Timm (2007), who used the turbulence parameterization achieved by Degrazia et al. (2000). The analysis of the results shows a better performance by the Lagrangian particles model when it is implemented the parameterization proposed by Degrazia et al. (2000).