Space Weather
Mostrando 1-12 de 68 artigos, teses e dissertações.
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1. Uma andorinha só não faz verão: 160 anos do legado de Richard Carrington
Resumo No dia 1° de setembro de 1859, o astrônomo britânico Richard Carrington observou um comportamento anômalo no Sol. Aproximadamente 17 horas depois, efeitos magnéticos de escalas globais foram observados na Terra: auroras boreais e austrais em regiões de baixas latitudes, e falhas em equipamentos telegráficos na Europa e América do Norte. Hoje,
Rev. Bras. Ensino Fís.. Publicado em: 25/11/2019
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2. Avaliação da Habilidade do Modelo WRF em Representar a Precipitação na Amazônia Usando Diferentes Escalas
Resumo A precipitação no norte da Amazônia dos verões e outonos austral, do período de 1988 a 1999, foi simulada utilizando o modelo regional Weather Research and Forecasting (WRF), através de uma abordagem em escalas distintas, com domínios aninhados de 45 e 15 km. As condições iniciais e de contorno foram obtidas da Climate Forecast System Reanaly
Rev. bras. meteorol.. Publicado em: 05/08/2019
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3. Wet Days in the Dry Quarter of the Alcântara Launch Center Region: Observational Features
ABSTRACT: Precipitation events are infrequent in the dry quarter (SON) of the Alcântara Launch Center (Centro de Lançamento de Alcântara, CLA), the main launch site of the Brazilian Space Program. However, their occurrence could be a risk for activities during launch missions. In this work, the observational features of wet days (daily precipitation total
J. Aerosp. Technol. Manag.. Publicado em: 18/07/2019
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4. Weather Predicates, Unarticulation and Utterances
ABSTRACT Perry contends that an utterance of (1) ‘It is raining’ must be assigned a location before being truth assessed. The location is famously argued to be an unarticulated constituent of the proposition an utterance of (1) expresses. My paper examines this view from a pluri-propositionalist perspective. The sentence (1) contains an impersonal pronou
Manuscrito. Publicado em: 2018-06
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5. Numerical Simulations to Assess ART and MART Performance for Ionospheric Tomography of Chapman Profiles
ABSTRACT The incomplete geometrical coverage of the Global Navigation Satellite System (GNSS) makes the ionospheric tomographic system an ill-conditioned problem for ionospheric imaging. In order to detect the principal limitations of the ill-conditioned tomographic solutions, numerical simulations of the ionosphere are under constant investigation. In this
An. Acad. Bras. Ciênc.. Publicado em: 31/07/2017
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6. The Mapping of Aerospace Meteorology in the Brazilian Space Program: Challenges and Opportunities for Rocket Launch
ABSTRACT: The meteorological and oceanographic conditions are crucial for the successful launch of aerospace vehicles. However, the decision-making process using environmental information is a complex problem, since it depends on a constant review of current and future weather conditions. To understand this process in the Brazilian Space Program (BSP) contex
J. Aerosp. Technol. Manag.. Publicado em: 2015-03
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7. New design chart for basic wind speeds in Brazil
The design charts for basic wind speeds currently in use in Brazil [1] were created in 1977, based on wind speed records from 1950 to 1974. The database covered up to 25 years of wind records obtained in 49 weather stations, totaling 919 stationyears of data. Since 1974, additional 37 years of wind records became available, but have not been incorporated in
Lat. Am. j. solids struct.. Publicado em: 2013-07
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8. Verificação da previsão do tempo em São Paulo com o modelo operacional WRF / Review of weather in São Paulo with the WRF Operational Model.
Forecasts of daily maximum and minimum temperatures and rainfall performed by the operational numerical weather prediction WRF (Weather Research Forecasting) model in the São Paulo are evaluated. Initial and boundary conditions provided by the 00UTC Global Forecast System (GFS) Model and WRF run for 72 hours, with two nested grids (with horizontal grid spac
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/11/2012
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9. Modelagem estatística de extremos espaciais com base em processos max-stable aplicados a dados meteorológicos no estado do Paraná / Statistical modelling of spatial extremes based on max-stable processes applied to environmental data in the Parana State
The most mathematical models developed for rare events are based on probabilistic models for extremes. Although the tools for statistical modeling of univariate and multivariate extremes are well-developed, the extension of these tools to model spatial extremes data is currently a very active area of research. Modeling of maximum values under the spatial dom
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/08/2012
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10. Caracterização batimétrica e fisicooceanográfica do canal de acesso ao porto de Cabedelo/PB: uma análise ambiental ao derrame de óleo
The State of Paraíba is one of the most dynamic states of Brazil, strategically located in the northeast, is notable for the excellent potential for integration of different transportation modes forming the states of Rio Grande do Norte, Pernambuco and Alagoas. The dynamic that occurs with port activity causes changes in the space where it is installed. And
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2011
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11. Estudo de modelos e condições iniciais da geração a priori de detritos espaciais e sua propagação orbital / Study of models and initial conditions of a priori generation of space debris and their orbital propagation
Currently, it is estimated that there are hundreds of thousands of space debris, of various sizes, around the Earth. The space debris, also known as orbital debris, can remain in orbit with other bodies for a long time; and can cause risks of collision, including with space vehicles still in operation. In addition, there are risks of potential accidents by r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/04/2011
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12. Modelo cartográfico digital temático para simulação e previsão de inundações no município de Porto Alegre - RS
Desastres naturais sempre fizeram parte da vida dos seres humanos, porém nos últimos anos devido ao crescimento dos grandes centros urbanos, da dificuldade de aplicação e cumprimento de políticas de preservação ambiental e de alterações climáticas crescentes, as catástrofes naturais estão se tornando comuns, e no caso particular deste estudo os d
Publicado em: 2011