Trends in Antarctic ozone hole metrics 2001–17
Matthew B. Tully A E , Paul B. Krummel B and Andrew R. Klekociuk C D
+ Author Affiliations
- Author Affiliations
A Bureau of Meteorology, GPO Box 1289, Melbourne, Vic. 3001, Australia.
B Climate Science Centre, CSIRO Oceans and Atmosphere, Aspendale, Vic., Australia.
C Antarctica and the Global System, Australian Antarctic Division, Kingston, ACT, Australia.
D Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart, Tas., Australia.
E Corresponding author. Email: matt.tully@bom.gov.au
Journal of Southern Hemisphere Earth Systems Science 69(1) 52-56 https://doi.org/10.1071/ES19020
Submitted: 22 January 2018 Accepted: 13 May 2019 Published: 11 June 2020
Journal Compilation © BoM 2019 Open Access CC BY-NC-ND
Abstract
Linear trends over the years 2001–17 are reported of a number of standard metrics used to describe the severity of the Antarctic ozone hole, both with and without a simple adjustment to account for meteorological variability. The trends were compared to those from the years 1979–2001. All metrics considered showed a trend towards reduced ozone depletion since 2001, at significance levels ranging from 2.4 to 3.9 standard errors of the trend after the adjustment was performed. The adjustment for meteorological variability had little effect on the values of the trends but did substantially reduce the scatter and, therefore, uncertainty of the trends.
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