Atmospheric Phenomena
Mostrando 1-12 de 31 artigos, teses e dissertações.
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1. Key Terrestrial and Space Environment Sources
ABSTRACT Natural (Terrestrial & Space) Environment (NE) phenomena play a significant role in the design and flight of aerospace vehicles and in the integrity of the associated aerospace systems and structures. Both the terrestrial environment (0-90 km altitude) and the space environment (Earth orbital altitudes) parameters and their engineering application p
J. Aerosp. Technol. Manag.. Publicado em: 17/01/2020
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2. The Role of Terrestrial and Space Environments in Launch Vehicle Development
ABSTRACT: Natural (Terrestrial & Space) Environment (NE) phenomena play a significant role in the design and flight of aerospace vehicles and in the integrity of the associated aerospace systems and structures. Natural environmental design criteria guidelines described here are based on measurements and modeling of atmospheric and climatic phenomena relative
J. Aerosp. Technol. Manag.. Publicado em: 04/11/2019
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3. Study of Gas Turbulent Dispersion Process in the Alcântara Launch Center
ABSTRACT: The Alcântara Launch Center (ALC) is the Brazilian gate to the space located at the north coast of Maranhão State, close to the Equator. Topographical local characteristics modify the parameters of incident atmospheric winds and it can cause great influence on the gas dispersion process. In this work, detailed scale models of the ALC region was e
J. Aerosp. Technol. Manag.. Publicado em: 25/10/2018
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4. ANÁLISE DA CONCENTRAÇÃO E COMPOSIÇÃO DE AEROSSÓIS DE QUEIMADAS NO PANTANAL MATO-GROSSO
The Earth's atmosphere has a large number of small solid and liquid particles which differ in size, shape and composition. One of the most obvious characteristics of the phenomena of air pollution is linked to the occurrence of atmospheric aerosol. The research was conducted in a protected nature reserve, Private Natural Heritage Reserve (RPPN) Social Servic
Quím. Nova. Publicado em: 2016-09
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5. Electrified Water: Liquid, Vapor and Aerosol
Many reports associate electrostatic charge in dielectrics with water, either bulk, finely dispersed in aerosol or as atmospheric vapor. Two widespread but currently controversial assumptions relevant to this topic are the prevalence of electroneutrality and the passive role of water in electrical phenomena, dissipating charge due to its significant electric
J. Braz. Chem. Soc.. Publicado em: 2016-02
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6. Propagação guiada de ondas de VLF: aplicação ao estudo de fenômenos atmosféricos e naturais
Deep amplitude minima are observed in the daily records of Very Low Frequency (VLF, between 3 - 30 kHz) wave amplitudes. Amplitude minima are attributed to modal interference and modal conversion of waves propagating in the Earth - Ionosphere waveguide. The time of amplitude minima is related with the localization of the Terminator line and, therefore, is de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
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7. Statistical Analysis of Spatial and Temporal Variability of Maximum Precipitation Events on the Rio Grande do Sul
Abstract: A statistical analysis of precipitation at Rio Grande do Sul State was presented in this article. The aim of this work was to identify spatial and temporal patterns of maximum precipitation, which was achieved by fitting a theoretical variogram in maximum annual rainfalls and its times of occurrence. In the literature, it was found that this patter
J. Aerosp. Technol. Manag.. Publicado em: 2012-06
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8. Vulnerabilidade socioespacial relacionada a precipitações e ventos em Atibaia - SP / Sociospatial vulnerability related to precipitation and winds in Atibaia - SP
The accelerated process of urbanization of the twentieth century contributed to increase the occupation of risk areas, mainly by the low income population. This has increased their vulnerability to problems arising from atmospheric phenomena, especially in urban centers, which widened the sociospatial segregation in several municipalities. This framework is
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
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9. Influência das variabilidades solar, geomagnética e atmosférica na modulação da intensidade de raios cósmicos / Influence of solar, geomagnetic and atmospheric activities in cosmic ray intensity modulation
Cosmic ray is influenced by solar, geomagnetic and atmospheric phenomena. In this Thesis are presented studies with the cosmic ray data regarded by the CARPET detector, which is installed in the Argentinean Andes, between 2006 and 2008. The variations in the cosmic ray count rate related to rain, temperature, atmospheric pressure and atmospheric electric fie
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/05/2011
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10. Proposta metodológica para elaboração de mapas de ruído em ambiente SIG, segundo norma ISO 9613-2
Noise mapping is a new activity with growing awareness among public officials and communities. This work presents a methodological proposal for the generation of noise maps in a Geographic Information System (GIS), based on ISO 9613-2, which standards the calculus for noise attenuation during propagation outdoors. Besides the definitions of methodological pr
Publicado em: 2011
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11. Eventos extremos de precipitação no leste da Amazônia. / Extreme events of rainfall in Eastern Amazon.
The aim of this study was to characterize the extreme events of rainfall in Eastern Amazon, to analyze on ocean-atmosphere conditions in global scale associated with intense occurrence periods of these events, to contribute for temporal variation comprehension of rainfall extreme events, as well as of determinant phenomena to its occurrence and to make furth
Publicado em: 2010
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12. Storm-track na América do Sul e vizinhanças: climatologia, variabilidade e mudanças climáticas / Storm-tracks over South America and adjacent areas: climatology, variability and climate change
This study deals with an extratropical cyclone climatology for South America (SA), Antarctic Peninsula and adjacents oceans in the austral winter and summer seasons for the current and future climate. An automatic and objective method to monitoring specific features of meteorological fields of the "European Centre for Medium Range Weather Forecast"(ECMWF) an
Publicado em: 2010