An Analysis of the Energetics of Tropical and Extra-Tropical Regions for Warm ENSO Composite Episodes

Abstract 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)...

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Main Authors: Zayra Christine Sátyro, José Veiga
Format: Article
Language:English
Published: Sociedade Brasileira de Meteorologia
Series:Revista Brasileira de Meteorologia
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862017000100039&lng=en&tlng=en
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author Zayra Christine Sátyro
José Veiga
author_facet Zayra Christine Sátyro
José Veiga
author_sort Zayra Christine Sátyro
collection DOAJ
description Abstract 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.
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spelling doaj.art-053016643210499ba181d8900b4713c42022-12-21T23:23:28ZengSociedade Brasileira de MeteorologiaRevista Brasileira de Meteorologia1982-4351321395110.1590/0102-778632120150114S0102-77862017000100039An Analysis of the Energetics of Tropical and Extra-Tropical Regions for Warm ENSO Composite EpisodesZayra Christine SátyroJosé VeigaAbstract 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862017000100039&lng=en&tlng=enenergética atmosféricaCiclo de LorenzENSOEl Niño
spellingShingle Zayra Christine Sátyro
José Veiga
An Analysis of the Energetics of Tropical and Extra-Tropical Regions for Warm ENSO Composite Episodes
Revista Brasileira de Meteorologia
energética atmosférica
Ciclo de Lorenz
ENSO
El Niño
title An Analysis of the Energetics of Tropical and Extra-Tropical Regions for Warm ENSO Composite Episodes
title_full An Analysis of the Energetics of Tropical and Extra-Tropical Regions for Warm ENSO Composite Episodes
title_fullStr An Analysis of the Energetics of Tropical and Extra-Tropical Regions for Warm ENSO Composite Episodes
title_full_unstemmed An Analysis of the Energetics of Tropical and Extra-Tropical Regions for Warm ENSO Composite Episodes
title_short An Analysis of the Energetics of Tropical and Extra-Tropical Regions for Warm ENSO Composite Episodes
title_sort analysis of the energetics of tropical and extra tropical regions for warm enso composite episodes
topic energética atmosférica
Ciclo de Lorenz
ENSO
El Niño
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862017000100039&lng=en&tlng=en
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