Artigos científicos, teses e dissertações
Publicados nas melhores instituições de ensino

In this thesis, we presents a development and validation of a 3D numerical model for the advection-diffusion equation. Models of this kind has been developed for scientific investigations and to support atmospheric emissions control and environmental policy decisions. To develop ...

ABSTRACT: Aerospace engineering has always had the need for various natural environment parameters to be used as inputs in research and engineering analyses used in the design and development of aircraft and launch/reentry vehicles. Although winds are indeed the main natural envi...

Throughout numerical simulations and near to surface measurements of pollutants concentrations, in this work some meteorological situations of relevance for high ozone concentrations episodes over the Metropolitan Area of Sao Paulo (MASP) were studied., between 1999 and 2006. Fir...

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This thesis presents Artificial Neural Networks for inverse problem solution to recover atmospheric temperature and moisture profiles from satellite data. The Artificial Neural Networks are presented as alternative methods in the solution of inverse problems in the atmospheric da...

This study aims to develop a planning system on multiple spatial and temporal scales, and apply it to the Brazilian electric sector and Ceará State, Jaguaribe Metropolitan System. For realization of this proposal, we have been considered some temporal scales: short-term (up to 1 ...

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This work is focused on the experimental study of the excess molar enthalpy as a functions of composition of binary liquid solutions containing 1-pentanol + acetonitrile and 1- hexanol + acetonitrile for 288,15, 298,15, 313,15 and 323,15K and atmospheric pressure. The excess mola...

Archived soil samples (1937-1999) and historic air quality data from the Los Angeles Basin were used for reconstructing the record of change between atmospheric NO(x) loads, soil delta(15)N values and the diversity of arbuscular mycorrhizae (AM), which are ubiquitous plant-fungus...

Thirty years ago, E. N. Lorenz provided some approximate limits to atmospheric predictability. The details—in space and time—of atmospheric flow fields are lost after about 10 days. Certain gross flow features recur, however, after times of the order of 10–50 days, giving hope fo...

This work aims to verify the advantage of nesting Eta model in global coupled ocean-atmosphere model (CGCM) in climate forecast over South America and Tropical Atlantic. Three ensembles hindcasts of ten summer (December, January and February) between 1997 and 2006. The hindcasts ...

Global warming and its origins triggered the beginning to considerable discussion in the last century. Studies of climate models presented in multidisciplinary scientific reports suggest that anthropogenic activities, particularly the emission of gases from the greenhouse effect,...

Many studies on evaluation of the impact of satellite sounding on forecasts, made by different institutions around the World, have shown that this kind of data are very important to improve the quality of weather forecasting in Southern Hemisphere. There are many methods of data ...

Earth history was punctuated during the Permo-Carboniferous [300–250 million years (Myr) ago] by the longest and most severe glaciation of the entire Phanerozoic Eon. But significant uncertainty surrounds the concentration of CO2 in the atmosphere through this time interval and t...

The behaviour of synoptics systems which affected the Antarctica Peninsula and Drake Passage during the Operantar XX, in the 2001/2002 summer, were analysed in this study. Three main methods were developed. The first one, is to evaluate the behaviour of the large and mesocyclones...

The behaviour of synoptics systems which affected the Antarctica Peninsula and Drake Passage during the Operantar XX, in the 2001/2002 summer, were analysed in this study. Three main methods were developed. The first one, is to evaluate the behaviour of the large and mesocyclones...

The majority of numerical models in climatology and geomagnetism rely on deterministic finite-difference techniques and attempt to include as many empirical constraints on the many processes and boundary conditions applicable to their very complex systems. Despite their sophistic...

The effect of an elevated strike object on the measured current in the top and the bottom of Morro do Cachimbo (MCS) station instrumented tower is modeled, considering a current divisor applied at the tower top, and that the channel current is supplied by the current source locat...

Weather forecasting systems require a model for the time evolution and an estimate of the current state of the system. The numerical weather prediction (NWP) incorporates the equations of atmospheric dynamics with physical process and it can predict the future state of the atmosp...

The solar radiation reflected by targets on the earth s surface interacts with the atmosphere before being detected by the satellite sensors. In the visible wavelenght region, scattering by molecules and aerosols predominates on the interaction of the radiation with the atmospher...

In this work, the Lagrangian stochastic particle model LAMBDA is utilized to simulate the dispersion and the transport of contaminants under different atmospheric conditions. The analysis employs three different field experiments of atmospheric diffusion: the Copenhagen experimen...