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Evolution of the eastward shift in the quasi-stationary minimum of the Antarctic total ozone column

Citation

Grytsai, A and Klekociuk, A and Milinevsky, G and Evtushevsky, O and Stone, K, Evolution of the eastward shift in the quasi-stationary minimum of the Antarctic total ozone column, Atmospheric Chemistry and Physics, 17 pp. 1741-1758. ISSN 1680-7316 (2017) [Refereed Article]


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Copyright 2017 the Authors. Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) https://creativecommons.org/licenses/by/3.0/

DOI: doi:10.5194/acp-17-1741-2017

Abstract

The quasi-stationary pattern of the Antarctic total ozone has changed during the last 4 decades, showing an eastward shift in the zonal ozone minimum. In this work, the association between the longitudinal shift of the zonal ozone minimum and changes in meteorological fields in austral spring (September–November) for 1979–2014 is analyzed using ERA-Interim and NCEP–NCAR reanalyses. Regressive, correlative and anomaly composite analyses are applied to reanalysis data. Patterns of the Southern Annular Mode and quasi-stationary zonal waves 1 and 3 in the meteorological fields show relationships with interannual variability in the longitude of the zonal ozone minimum. On decadal timescales, consistent longitudinal shifts of the zonal ozone minimum and zonal wave 3 pattern in the middle-troposphere temperature at the southern midlatitudes are shown. Attribution runs of the chemistry–climate version of the Australian Community Climate and Earth System Simulator (ACCESS-CCM) model suggest that long-term shifts of the zonal ozone minimum are separately contributed by changes in ozone-depleting substances and greenhouse gases. As is known, Antarctic ozone depletion in spring is strongly projected on the Southern Annular Mode in summer and impacts summertime surface climate across the Southern Hemisphere. The results of this study suggest that changes in zonal ozone asymmetry accompanying ozone depletion could be associated with regional climate changes in the Southern Hemisphere in spring.

Item Details

Item Type:Refereed Article
Keywords:ozone, stratosphere, Antarctica
Research Division:Earth Sciences
Research Group:Atmospheric Sciences
Research Field:Tropospheric and Stratospheric Physics
Objective Division:Environment
Objective Group:Atmosphere and Weather
Objective Field:Atmospheric Processes and Dynamics
Author:Klekociuk, A (Dr Andrew Klekociuk)
ID Code:114089
Year Published:2017
Web of Science® Times Cited:2
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2017-02-06
Last Modified:2018-04-20
Downloads:55 View Download Statistics

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