Marcelo Romero de Moraes
Universidade Federal do Pampa
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Featured researches published by Marcelo Romero de Moraes.
Ambiente & Sociedade | 2008
Davidson M. Moreira; Tiziano Tirabassi; Marcelo Romero de Moraes
Neste trabalho apresentam-se os principais aspectos relacionados a meteorologia ligada ao processo de dispersao turbulenta de poluentes atmosfericos. Ressalta-se que a meteorologia desempenha um papel fundamental para o controle da qualidade do ar, pois os eventos meteorologicos guiam a dispersao de poluentes e sua deposicao no solo. Discutem-se os recentes melhoramentos da descricao e previsao dos fenomenos que envolvem a poluicao atmosferica considerando a melhoria da qualidade de vida da populacao.
Ciência e Natura | 2016
Everton de Almeida Lucas; Alejandro Gutiérrez Arce; Marcelo Romero de Moraes; Gabriel Cazes Boezio; José Cataldo Ottieri
In this work is presented a statistical description of wind profile in the first 100 m of height of the Planetary Boundary Layer, taking account the measurements in the tower Colonia Eulacio Uruguay. This tower has high vertical resolution of wind velocity measurements, form 10.1 m to 101.8 m. Thermometer are installed in 3.4 m and 100.8 m, also the tower is equipped with wind vane and pyranometer. We present the diurnal cycle of mean wind, intensity of turbulence in dependence of height, also standard deviation of direction is described as a measure of turbulence in wind. Stability state is computed with vertical gradient of temperature. Before sunrise (unstable condition) is seen a decrease in mean velocity of top levels (81.8 m and 101.8 m) and increase in lower levels (10.1 m and 25.7 m). Higher dispersion in dT/dz can be seen during night time (stable condition), superadiabatic values -0.02 ◦C/m can be seen during daytime with slow dispersion. Intensity of turbulence decrease with height, for all stability conditions, is seen a increase in intensity of turbulence for unstable condition.
Ciência e Natura | 2013
Guilherme Goergen; Jônatan Dupont Tatsch; Marcelo Romero de Moraes
The aim of this study was to evaluate the best method for estimating potential evapotranspiration for the region of Bage-RS, for its application in standardized precipitation evapotranspiration index (SPEI). Among the methods evaluated, the Penman-Montheith (ET0pen) presented the best estimates compared to measured potential evaporation. The use of ET0pen on index calculation SPEI identified drought periods consistent with those reported in the media.
Revista Brasileira De Meteorologia | 2007
Umberto Rizza; Jonas C. Carvalho; Davidson M. Moreira; Marcelo Romero de Moraes; A. Goulart
In this article is carried out a comparison between Lagrangian and Eulerian modelling of the turbulent transport of pollutants within the Planetary Boundary Layer (PBL). The Lagrangian model is based on a three-dimensional form of the Langevin equation for the random velocity. The Eulerian analytical model is based on a discretization of the PBL in N sub-layers; in each of the sub-layers the advection-diffusion equation is solved by the Laplace transform technique. In the Eulerian numerical model the advective terms are solved using the cubic spline method while a Crank-Nicholson scheme is used for the diffusive terms. The models use a turbulence parameterization that considers a spectrum model, which is given by a linear superposition of the buoyancy and mechanical effects. Observed ground-level concentrations measured in a dispersion field experiment are used to evaluate the simulations.
Journal of Aerospace Technology and Management | 2011
Davidson Martins Moreira; Leonardo Barboza Trindade; Gilberto Fisch; Marcelo Romero de Moraes; Rodrigo Martins Dorado; Roberto Lage Guedes
Scientia Plena | 2017
Everton de Almeida Lucas; Alejandro Gutiérrez Arce; Marcelo Romero de Moraes; Gabriel Cazes Boezio
Anais do Salão Internacional de Ensino, Pesquisa e Extensão | 2016
Everton de Almeida Lucas; Marcelo Romero de Moraes; Alejandro Gutiérrez Arce
American Journal of Environmental Engineering | 2016
Marcelo Coleto Rola; Rodrigo Martins Dorado; Marcelo Romero de Moraes; B. E. J. Bodmann
Anais do Salão Internacional de Ensino, Pesquisa e Extensão | 2014
Everton de Almeida Lucas; Marcelo Romero de Moraes; Vivian Teixeira Alves Branco; Pedro Hidalgo; Alexandro Gularte Schafer
Anais do Salão Internacional de Ensino, Pesquisa e Extensão | 2014
Marcelo Coleto Rola; Marcelo Romero de Moraes; Rodrigo Martins Dorado; Alexandro Gularte Schafer