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A connection from stratospheric ozone to El Niño-Southern Oscillation

We use reanalysis and observational data to link the lower stratospheric ozone regulation of the ultraviolet radiation (UV-B) component of solar energy to ENSO modulation. Results indicate that during ENSO extremes, the Walker Circulation (WC) and Brewer Dobson Circulation are related to lower strat...

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Autores principales: Manatsa, Desmond, Mukwada, Geoffrey
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5514124/
https://www.ncbi.nlm.nih.gov/pubmed/28717231
http://dx.doi.org/10.1038/s41598-017-05111-8
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author Manatsa, Desmond
Mukwada, Geoffrey
author_facet Manatsa, Desmond
Mukwada, Geoffrey
author_sort Manatsa, Desmond
collection PubMed
description We use reanalysis and observational data to link the lower stratospheric ozone regulation of the ultraviolet radiation (UV-B) component of solar energy to ENSO modulation. Results indicate that during ENSO extremes, the Walker Circulation (WC) and Brewer Dobson Circulation are related to lower stratospheric ozone alterations east of the date line over the Pacific. These in turn are linked to upper tropospheric anomalous dipole temperature patterns on either side of the equator. The ensuing changes in geopotential height values do not only drive equatorial zonal wind anomalies in the upper troposphere that are reversed at the equatorial surface, but also impact on the intensity of the South Pacific High circulation. When the WC is enhanced, a La Nina type of circulation is indentified but if the circulation cell is inverted, the anomalous circulation results in an El Nino. Though the anomalous lower stratospheric ozone peaks during austral summer it is significant throughout the ENSO lifecycle. Hence, ENSO structure and variability are mainly linked to the lower stratospheric ozone instigated internal dynamics of the Pacific atmosphere. The ENSO forcing most likely originates from the ozone related regulation of the incoming solar UV-B radiation rather than the Pacific Ocean surface.
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spelling pubmed-55141242017-07-19 A connection from stratospheric ozone to El Niño-Southern Oscillation Manatsa, Desmond Mukwada, Geoffrey Sci Rep Article We use reanalysis and observational data to link the lower stratospheric ozone regulation of the ultraviolet radiation (UV-B) component of solar energy to ENSO modulation. Results indicate that during ENSO extremes, the Walker Circulation (WC) and Brewer Dobson Circulation are related to lower stratospheric ozone alterations east of the date line over the Pacific. These in turn are linked to upper tropospheric anomalous dipole temperature patterns on either side of the equator. The ensuing changes in geopotential height values do not only drive equatorial zonal wind anomalies in the upper troposphere that are reversed at the equatorial surface, but also impact on the intensity of the South Pacific High circulation. When the WC is enhanced, a La Nina type of circulation is indentified but if the circulation cell is inverted, the anomalous circulation results in an El Nino. Though the anomalous lower stratospheric ozone peaks during austral summer it is significant throughout the ENSO lifecycle. Hence, ENSO structure and variability are mainly linked to the lower stratospheric ozone instigated internal dynamics of the Pacific atmosphere. The ENSO forcing most likely originates from the ozone related regulation of the incoming solar UV-B radiation rather than the Pacific Ocean surface. Nature Publishing Group UK 2017-07-17 /pmc/articles/PMC5514124/ /pubmed/28717231 http://dx.doi.org/10.1038/s41598-017-05111-8 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Manatsa, Desmond
Mukwada, Geoffrey
A connection from stratospheric ozone to El Niño-Southern Oscillation
title A connection from stratospheric ozone to El Niño-Southern Oscillation
title_full A connection from stratospheric ozone to El Niño-Southern Oscillation
title_fullStr A connection from stratospheric ozone to El Niño-Southern Oscillation
title_full_unstemmed A connection from stratospheric ozone to El Niño-Southern Oscillation
title_short A connection from stratospheric ozone to El Niño-Southern Oscillation
title_sort connection from stratospheric ozone to el niño-southern oscillation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5514124/
https://www.ncbi.nlm.nih.gov/pubmed/28717231
http://dx.doi.org/10.1038/s41598-017-05111-8
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