Desenvolvimento de modelo bidimensional axi-simétrico de nuvem quente com microfísica parametrizada

• Ano de defesa: 1995
• Autor(a) principal: Costa, Alexandre Araújo
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Difusão atmosférica; Nuvens
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/62570

In the present work, we develop a numerical model of a warm cloud. We use an axial symmetry, first, ignoring the shear effect, and, second, to better simulate a isolated cell. To solve the dynamic equations, several numerical schemes are compared, particularly with the intuit to solve the advection equation and the diagnostic equation for the stream function. We show several results and conclusions about the comparative studies of the Lax-Wendroff and Cubic Spline methods for advection equation, as too, by the SOR and SIP methods by the Stream function diagnostic equation. We adopt for the microphysic treatment some parameterizations to calculate the autoconversion and collection terms. The condensation/evaporation processes are evaluated according the saturation technique. We show many results related to several simulations of clouds. They indicate how the environmental conditions are important Also we show the difference between the maritime and continental clouds, for the same environmental and initial conditions.