Tag Archive: Abtarctica

MON01: Will ANTARCTIC OZONE HOLE RECOVERY affect australian rainfall?

August 18, 2021 11:26 am Published by Comments Off on MON01: Will ANTARCTIC OZONE HOLE RECOVERY affect australian rainfall?

Ozone depletion over Antarctica from the late 1970s to 2000 has been linked to changes in the surface climate over the Southern Hemisphere in summer, among them a more positive Southern Annular Mode (SAM). Over Australian latitudes, a more positive SAM is associated with increased rainfall over eastern Australia in the summer season. Given stratospheric ozone over Antarctica is projected to recover to 1980 levels by ~2050, the impact of ozone recovery on its own would be to reduce this upward trend in summertime rainfall over eastern Australia.