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Na elaboracao desse trabalho, foram analisadas as diferencas entre os valores das variaveis de temperatura da superficie, vapor d’agua e energia potencial convectiva disponivel (CAPE) em dois anos de diferentes precipitacoes pluviometricas na regiao Nordeste do Brasil (NEB), um ano de El Nino (1998) e um ano de La Nina (2008). O estudo refere-se ao trimestre fevereiro-marco-abril (FMA), periodo chuvoso no Norte do NEB, regiao mais afetada pelos eventos de El Nino e La Nina. O modelo numerico Brazilian developments on the Regional Atmospheric Modeling System – BRAMS foi utilizado para simular os campos das variaveis referidas. Para a inicializacao do modelo BRAMS foram utilizados dados de reanalises 1 do National Centers for Environment Prediction/National Center for Atmospheric Research (NCEP/NCAR). Alem disso, foram utilizados dados de temperatura da superficie do mar (TSM) observada, que foi incluida no modelo como condicoes de contorno sobre oceano. Os resultados obtidos mostraram que se pode reproduzir aspectos meteorologicos durante eventos de El-Nino/Oscilacao Sul, com a utilizacao do BRAMS. A temperatura da superficie e o vapor d’agua apresentaram seus maiores valores no ano seco de 1998, principalmente no Norte do NEB. Os maiores valores da CAPE foram observados na regiao semiarida no periodo de La Nina. Palavras-chave: BRAMS, El Nino/La Nina, precipitacao  Analysis of Meteorological Aspects on the Northeast of Brazil in El Nino and La Nina Years ABSTRACT  In the development of this study, have been analyzed the differences between the values of surface temperature, precipitable water and convective available potential energy (CAPE) in two different rainfalls years in Northeast Brazil (NEB), an El Nino year (1998) and a La Nina year (2008). The study refers to the quarter from February to March-April (FMA), the rainy season in northern NEB region most affected by El Nino and La Nina. The numerical model Brazilian developments on the Regional Atmospheric Modeling System - BRAMS was used to simulate the fields of the mentioned variables. For the initialization of the BRAMS model reanalysis data were used by the National Centers for Environment Prediction / National Center for Atmospheric Research (NCEP / NCAR). In addition, have been used data from the observed sea surface temperature (SST), which was included in the model as boundary conditions on the ocean. The results showed that meteorological aspects can play well during ENSO events, using the BRAMS. Surface temperature and water vapor presented their highest values in the dry year of 1998, mainly in northern NEB.The highest values of CAPE were observed in the semiarid region in the rainy season. Keywords: BRAMS, El Nino/La Nina, precipitation

revista brasileira de geografia física

Análise de Aspectos Meteorológicos Sobre o Nordeste do Brasil em Anos de El Niño e La Niña (Analysis of Meteorological Aspects on the Northeast of Brazil in El Niño and La Niña Years)