Weather Forecast Models
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. 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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2. Fascioliasis in buffaloes: A 5-year forecast analysis of the disease based on a 15-year survey in Brazil
Resumo Na América do Sul, a fasciolose causada pelo Trematoda Fasciola hepatica é uma antropozoonose associada a perdas econômicas significativas e baixo grau de bem-estar animal. O objetivo deste estudo foi determinar a prevalência de F. hepatica no fígado de búfalos abatidos entre 2003 a 2017 e realizar uma análise de previsão da doença para os pr
Rev. Bras. Parasitol. Vet.. Publicado em: 18/07/2019
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3. 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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4. Dynamic load-balancing : a new strategy for weather forecast models
Weather forecasting models are computationally intensive applications and traditionally they are executed in parallel machines. However, some issues prevent these models from fully exploiting the available computing power. One of such issues is load imbalance, i.e., the uneven distribution of load across the processors of the parallel machine. Since weather
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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5. Assimilação de dados com redes neurais artificiais em modelo de circulação geral da atmosfera / Data assimilation with artificial neural networks in atmospheric general circulation model
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 atmosphere. Data assimilation provides such an initial estimate of the atmosphere wher
Publicado em: 2010
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6. Precipitation forecast aided by weather radar for early warning system of urban floods / Previsão de chuva com auxílio de radar de tempo visando a um sistema de alerta antecipado de cheias em áreas urbanas
To reduce human and material losses during floods it is feasible to concisely study the rainfall forecast as the main part of an early warning system. The use of weather radar information, when linked to physically-based forecast models, can contribute for monitoring and forecasting of intense rainfall episodes. Thus, the rainfall forecast, based on using of
Publicado em: 2009
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7. The impact of the use of high spatial resolution sea surface temperature data in a numerical weather prediction model / Impacto da utilização de dados de temperatura da superfície do mar de alta resolução espacial em um modelo de previsão numérica do tempo
Sea surface temperature (SST) is an important indicator of Earth´s climate. An accurate and global measurement of this parameter is of fundamental importance in applications related to climate studies, ocean-atmosphere interactions, marine ecosystem, etc. Special attention may be given to meteorological forecasts, where SST stands as an important boundary c
Publicado em: 2009
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8. Previsão e análise sobre as regiões sudeste e sul do Brasil utilizando redes neurais artificiais / Forecast and analysis of rainfall over south and southeastern Brazil using artificial neural network
This study uses an Artificial Neural Network (ANN) technique to establish a non-linear relationship between the large scale atmospheric circulation and local surface rainfall. The method involves the use of statistical downscaling applied to outputs from Eta model. In this sense, prognostic equations were developed for 18 locations using the ANN. This method
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2003
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9. Principais sistemas sinópticos que atuaram sobre a Península Antártica no verão de 2001/2002 e a circulação troposférica associada / The main synoptic system that effected the Antartic Peninsula in the 2001/2002 summer and the associated tropospheric circulation
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 which occurred in the area, during december, january and february, using satell
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 200302
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10. Forecast and analysis of rainfall over south and southeastern Brazil using artificial neural network / Previsão e análise sobre as regiões sudeste e sul do Brasil utilizando redes neurais artificiais
This study uses an Artificial Neural Network (ANN) technique to establish a non-linear relationship between the large scale atmospheric circulation and local surface rainfall. The method involves the use of statistical downscaling applied to outputs from Eta model. In this sense, prognostic equations were developed for 18 locations using the ANN. This method
Publicado em: 2003
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11. Analyses of the satellite sounding data assimilation process and the impact on weather forecast using a physical-space statistical analysis system. / Análise do procedimento de assimilação de sondagens derivadas de satélites e de seu impacto na previsão de tempo utilizando um sistema estátístico em espaço físico
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 assimilation and models of weather forecasting. In this study we used an adaptat
Publicado em: 2003
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12. Principais sistemas sinópticos que atuaram sobre a Península Antártica no verão de 2001/2002 e a circulação troposférica associada / The main synoptic system that effected the Antartic Peninsula in the 2001/2002 summer and the associated tropospheric circulation
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 which occurred in the area, during december, january and february, using satell
Publicado em: 2003