Interannual variations in the zonal asymmetry of the subpolar latitudes total ozone column during the austral spring

The Southern Hemisphere midlatitude Total Ozone Column (TOC) shows a “horseshoe” like structure with a minimum which appears to have two preferential extreme positions during October: one, near southern South America, the other, near the Greenwich Meridian approximately. The interannual zonal ozone...

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Autores principales: Agosta Scarel, Eduardo Andrés, Canziani, Pablo Osvaldo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Geofísica
Total Ozone Column
stratosphere/troposphere coupling
climate variability
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/132259
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-132259
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geofísica
Total Ozone Column
stratosphere/troposphere coupling
climate variability
spellingShingle Geofísica
Total Ozone Column
stratosphere/troposphere coupling
climate variability
Agosta Scarel, Eduardo Andrés
Canziani, Pablo Osvaldo
Interannual variations in the zonal asymmetry of the subpolar latitudes total ozone column during the austral spring
topic_facet Geofísica
Total Ozone Column
stratosphere/troposphere coupling
climate variability
description The Southern Hemisphere midlatitude Total Ozone Column (TOC) shows a “horseshoe” like structure with a minimum which appears to have two preferential extreme positions during October: one, near southern South America, the other, near the Greenwich Meridian approximately. The interannual zonal ozone asymmetry exists independently of the variations induced by the 11-year solar cycle, the Quasi-Biennial Oscillation (QBO) and planetary wave activity inducing the Brewer-Dobson circulation. The classification and climatological composition of these two extreme ozone-minimum positions allows for the observations of statistically significant patterns in geopotential height and zonal winds associated with the quasi-stationary wave 1, extending throughout lower stratosphere. The changes in the quasi-stationary wave 1 associated with the extreme TOC positions appear to have sinks and sources determining transient interactions between troposphere and the stratosphere. Thus, distinct climate states in the troposphere seem to be dynamically linked with the state of the stratosphere and ozone layer. The migration of the TOC trough from southern South America to the east during the 1990s can be related to changes in the troposphere/stratosphere coupling through changes in the Southern Annular Mode variability in spring.
format Articulo
Articulo
author Agosta Scarel, Eduardo Andrés
Canziani, Pablo Osvaldo
author_facet Agosta Scarel, Eduardo Andrés
Canziani, Pablo Osvaldo
author_sort Agosta Scarel, Eduardo Andrés
title Interannual variations in the zonal asymmetry of the subpolar latitudes total ozone column during the austral spring
title_short Interannual variations in the zonal asymmetry of the subpolar latitudes total ozone column during the austral spring
title_full Interannual variations in the zonal asymmetry of the subpolar latitudes total ozone column during the austral spring
title_fullStr Interannual variations in the zonal asymmetry of the subpolar latitudes total ozone column during the austral spring
title_full_unstemmed Interannual variations in the zonal asymmetry of the subpolar latitudes total ozone column during the austral spring
title_sort interannual variations in the zonal asymmetry of the subpolar latitudes total ozone column during the austral spring
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/132259
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AT canzianipabloosvaldo interannualvariationsinthezonalasymmetryofthesubpolarlatitudestotalozonecolumnduringtheaustralspring
bdutipo_str Repositorios
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