6 documents found, page 1 of 1
Indicadores de veranicos e de distribuição de chuva no Ceará e os impactos na a...
Rocha, Thaís Braga Carneiro; Júnior, Francisco das Chagas Vasconcelos; Silveira, Cleiton da Silva; Martins, Eduardo Sávio Passos RodriguesNortheastern Brazil has marked interannual rainfall variability with some dry and other rainy years. In this region, there are dry spells, which are consecutive days with no rainfall during the rainy season, causing losses in agricultural crops. This article aims to use an indicator of Indian summers already established by other authors 2020 and identify its relationship with the Rain Distribution Index and reg...
Sobre o sinal de um downscaling dinâmico às oscilações intrassazonais de precip...
Alves, José Maria Brabo; Souza, Everaldo Barreiros de; Costa, Alexandre Araújo; Martins, Eduardo Sávio Passos Rodrigues; Silva, Emerson Mariano daIntraseasonal oscillations are factors controlling the interannual variability of tropical rainfall. The knowledge of how numerical models reproduce its variability is important to better understand their roles and support operations of weather and climate. This paper investigates the sensitivity of a downscaling dynamic precipitation model in predicting the intraseasonal oscillations observed in the northern s...
Caracterização do regime de ventos no Piauí para o aproveitamento de energia eó...
Lira, Marcos Antonio Tavares; Moita Neto, José Machado; Loiola, João Victor Lopes de; Silva, Emerson Mariano da; Alves, José Maria BraboO presente estudo apresenta uma caracterização do regime de ventos em algumas regiões do estado do Piauí, realizada por meio da análise do perfil da velocidade média horária e mensal dos ventos bem como da freqüência da direção dos mesmos. O objetivo principal do trabalho é identificar possíveis sítios de geração de energia eólica no Piauí a partir do uso de uma ferramenta computacional: o software Windographer...
Estudo do regime hidrológico no semi-árido brasileiro por modelagem dinâmica ac...
Alves, José Maria BraboThe premiss for the rational use of water has demanded information on smaller space and time scales. This study investigates the sensitivity of climate simulation of a dynamic downscaling of precipitation (1971-2000) coupled to a rain-flow model and its application to the operation of a water reservoir in the semi-arid region of Ceará State. Emphasis was given to intra seasonal scale (smaller than a month) in y...
Variabilidade horo-sazonal da precipitação em Fortaleza-CE em anos de contraste...
Lima, Vicente de Paulo Melo; Campos, José Nilson Bezerra; Alves, José Maria BraboIn this study was investigated the hourly-seasonal variability of rain in Fortaleza-CE in climatic contrasts years (of El Niño, La Niña and Normal) using thirty years (1970-2000) of five minutes rainfall rates of pluviograph data. The results suggest that the diurnal, cycle monthly average, is controlled for the effect of the terrestrial breeze, with maximum of rain in night and during dawn and the beginning of...
Comparação entre a previsão de chuva no Nordeste do Brasil com método análogo e...
Alves, José Maria Brabo; Costa, Alexandre Araújo; Campos, José Nilson Bezerra; Sombra, Sergio Sousa; Santos, Antonio Carlos Santana dosThis article show a comparison of the results of precipitation simulation to the Northeast of Brazil (NEB) - 1971-2000, gotten for dynamic modeling of great scale and regional scale (downscaling) and the gotten of one empirical modeling K´neigbhors. The main results had shown that the empirical model presented minor absolute error in the periods of February to April (FMA) and March to May (MAM) that the dynamic...