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Problemas inversos em física da atmosfera
(Universidade Federal de Santa Maria, 2005-04-08)
Techniques for estimating unknown terms - such as eddy diffusivity and counter-gradient - in atmospheric flow are presented in this study. The methos is also used to identify the source term in atmospheric pollution. The ...
Avaliação dos fluxos superficiais noturnos de escalares através do método de balanço da camada limite atmosférica
(Universidade Federal de Santa Maria, 2006-04-19)
We report on three campaigns to measure the structure of the nocturnal
boundary layer in cleared and forested areas near Santarém, PA, in 2001 and 2003.
The aim was to describe the temporal evolution of wind and thermodynamic ...
Um estudo do hidrogênio neutro e rádio contínuo em galáxias seyfert com mopra e atca
(Universidade Federal de Santa Maria, 2006-12-01)
In this work 21-cm observations of a sample of 27 southern nearby galaxies (z < 0:018) are presented with a detected Hi line with the Mopra/ATNF radiotelescope. The total
neutral hydrogen gas content has been derived and ...
Um modelo euleriano de dispersão de contaminantes aplicado em diferentes condições de estabilidade atmosférica
(Universidade Federal de Santa Maria, 2004-04-23)
This work describes a model for contaminant dispersion under
different atmospheric stability conditions. It can be used to simulate the concentration of contaminants released from sources located at different heights in ...
Uma solução para a equação da energia cinética turbulenta empregando o método das características
(Universidade Federal de Santa Maria, 2009-08-31)
In this study, using the Method of Characteristics and numeric resources, presents a solution to the equation Spectral Density Evolution of Turbulent Kinetic Energy for a Convective Boundary Layer (CBL) in the morning.
It ...
Espectros de turbulência em terreno complexo
(Universidade Federal de Santa Maria, 2008-08-20)
Throughout this paper a spectral analysis is conducted on the superficial limit layer in complex terrains. The data used were collected in the central part of the state of Rio Grande
do Sul, in the Valley of Jacuí River. ...
Características estatísticas turbulentas associadas ao fenômeno do vento norte no sul do Brasil: aplicação ao problema da difusão de contaminantes
(Universidade Federal de Santa Maria, 2008-04-18)
A parameterization for the transport processes in a shear driven planetary boundary layer (PBL) has been established, employing turbulent statistical quantities measured during the north wind phenomenon in southern Brazil. ...
Modelo espectral de heisenberg aplicado ao decaímento da turbulência na camada residual
(Universidade Federal de Santa Maria, 2005-10-22)
In the study of the dispersion of contaminants in the atmosphere by computational simulations, the Eulerian approach, based in the diffusionadvection equation, is largely employed. In these simulations, concentration values ...
Estudo dos fluxos turbulentos de calor sensível e latente no fundo do vale do Rio da Prata
(Universidade Federal de Santa Maria, 2008-03-07)
Three observational campaigns have been conducted in the region of Nova Roma do Sul, southern Brazil. In the last one of them, a micrometeorological tower was deployed above the river surface, at the bottom of the Prata ...
Emprego da parametrização de Heisenberg e do método de Adomian no decaimento da Camada Limite Convectiva
(Universidade Federal de Santa Maria, 2009-08-31)
In this paper we present a spectral model to describe the decay of turbulent kinetic energy in the Convective Boundary Layer (CLC) of the earth s surface, where the physical processes that occur generate turbulence of ...