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This study focuses on the quantification and evaluation of the effects of ENSO (El Niño Southern Oscillation) warm phases, using a composite of five intense El Niño episodes between 1979 -2011 on the Energetic Lorenz Cycle for four distinct regions around the globe: 80°S -5°N (region 1), 50°S -5°N (region 2), 30°S -5°N (region 3), and 30°S -30°N(region 4), using Data from NCEP reanalysis-II. Briefly, the results showed that zonal terms of potential energy and kinetic energy were intensified, except for region 1, where zonal kinetic energy weakened. Through the analysis of the period in which higher energy production is observed, a strong communication between the available zonal potential and the zonal kinetic energy reservoirs can be identified. This communication weakened the modes linked to eddies of potential energy and kinetic energy, as well as in the other two baroclinic conversions terms. Furthermore, the results indicate that for all the regions, the system itself works to regain its stable condition. Keywords: atmospheric energetics, Lorenz Cycle, ENSO, El Niño. Uma Análise da Energética de Regiões Tropicais e Extra-Tropicais para um Composto de Episódios Quentes de ENOS ResumoEste estudo foca na quantificação e avaliação dos efeitos da fase quente de eventos ENOS (El Niño -Oscilação Sul), utilizando um composto de cinco intensos episódios de El Niño entre 1979 -2011, no Ciclo Energético Lorenz por quatro regiões distintas ao redor do globo: 80°S -5°N (domínio 1), 50°S -5°N (domínio 2), 30°S -5°N (domínio 3), e 30°S -30°N (domínio 4), utilizando os Dados do NCEP -Reanálise 2. Resumidamente, os resultados mostraram que termos zonais de energia potencial e energia cinética foram intensificadas, com exceção da região 1, onde a energia cinética zonal enfraqueceu. Através da análise do período em que é observada maior produção de energia, observa-se uma forte comunicação entre os reservatórios de energia potencial disponível zonal e energia cinética zonal. Esta comunicação enfraqueceu o modo associado à perturbação de energia potencial e cinética, bem como nos outros dois termos conversões baroclínicas. Além disso, os resultados indicam que, para todas as regiões, o sistema funciona para recuperar o seu estado estável. Palavras-chave: energética atmosférica, Ciclo de Lorenz, ENSO, El Niño.

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The purpose of this study was to quantify and evaluate the effects of ENSO (El Niño Southern Oscillation) cold phases, throughout a composite of five intense La Niña episodes, on the atmospheric energetics of four distinct domains: 80˚S -5˚N (zone 1), 50˚S -5˚N (zone 2), 30˚S -5˚N (zone 3), and 30˚S -30˚N (zone 4). Data from NCEP reanalysis-II were used in the reckoning of atmospheric energies in the mentioned areas. In the synthesis, in zones 2, 3 and 4, the results showed that production of zonal terms of potential energy and kinetic energy decreased, mainly due to decreases of the meridional temperature gradient. As a result the conversions between them and between zonal kinetic energy and eddy kinetic energy were also reduced. This behavior, however, has not led to a significant intensification of baroclinic branch, except for zone 4. Regarding zone 1, it was observed the most atypical set. That is, KZ was intensified even with the reduction of all the sources that contribute directly to its supply.