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Abstract

We report the linear trends over the years 2001-2017 of a number of standardmetrics used to describe the severity of the Antarctic Ozone Hole, both with andwithout a simple adjustment to account for meteorological variability. The trendsare compared to those from the years 1979-2001. All metrics considered show atrend towards reduced ozone depletion since 2001, at significance levels rangingfrom 2.4 to 3.9 standard errors of the trend after the adjustment has been performed.The adjustment for meteorological variability has little effect on the valuesof the trends but does substantially reduce the scatter and therefore uncertaintyof the trends.

Item Type:	Article
Authors/Creators:	Tully, MB and Krummel, PB and Klekociuk, AR
Keywords:	ozone, stratosphere, trend, Antarctica
Journal or Publication Title:	Journal of Southern Hemisphere Earth Systems Science
Publisher:	Australia Bureau of Meteorology
ISSN:	2206-5865
DOI / ID Number:	10.1071/ES19020
Copyright Information:	Copyright 2019 The Authors. Licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) https://creativecommons.org/licenses/by-nc-nd/4.0/deed.en_US
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