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Revista Brasileira de Meteorologia
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Confiabilidade nas estimativas do regime do vento fornecidas pelo brams no estado de Alagoas: influência do aninhamento e da resolução horizontal de grades

Authors: Pinto, Lucía Iracema Chipponelli; Martins, Fernando Ramos; Pereira, Enio Bueno; Fisch, Gilberto Fernando; Lyra, Roberto Fernando da Fonseca;

Confiabilidade nas estimativas do regime do vento fornecidas pelo brams no estado de Alagoas: influência do aninhamento e da resolução horizontal de grades

Abstract

Os resultados do estudo comparativo entre os dados observados em duas torres anemométricas instaladas no estado de Alagoas, com estimativas de vento produzidas em simulações numéricas realizadas com o modelo de mesoescala BRAMS, são apresentados e discutidos com o intuito de investigar a influência do refinamento da resolução horizontal e do aninhamento de grades na confiabilidade das estimativas de vento. As torres estavam instaladas em regiões de características distintas do ponto de vista ambiental e climatológico. Análises estatísticas foram realizadas para avaliar o desempenho do modelo no que se refere à capacidade de fornecer estimativas de vento que reproduzam a evolução temporal, o ciclo médio diário e a distribuição de frequência do vento observado nas duas localidades. O estudo foi realizado para as duas estações sazonais características da região: estação chuvosa (Maio/2008) e seca (Novembro/2008). Os resultados mostraram que houve um aumento na confiabilidade das estimativas da velocidade do vento quando a resolução horizontal passou de 8 km para 2 km. O ganho em confiabilidade foi mais significativo em Girau do Ponciano (GRP) localizada no interior do estado e que sofre menor influência do fenômeno de brisa marítima. O aumento da resolução horizontal para valores abaixo de 2 km não produziu redução importante dos desvios observados na estimativa da velocidade do vento pelo modelo na configuração adotada neste estudo. Os resultados demonstram a importância da aquisição de dados de campo para a investigação da confiabilidade, e ajuste das configurações e parametrizações inseridas em modelos numéricos, utilizados para estimar ou preReliability evaluation of wind regime estimates provided by the brams model for alagoas state (brazilian northeastern region): influence of nesting and horizontal resolution gridsver a disponibilidade de energia eólica em uma região específica.

Keywords

wind mast, torre anemométrica, Atmospheric modeling, Meteorology. Climatology, energia eólica, Modelagem atmosférica, QC851-999, wind power energy

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
6
Top 10%
Average
Average
Green
gold