Science Update: Modelling evidence of ozone depletion’s impact on extreme precipitation during the austral summer

A recent GRL article by S.M. Kang and co-authors explores the impacts of stratospheric ozone depletion on daily precipitation extremes during the austral summer. The two models used both suggest that ozone losses since the late 1970’s have resulted in an increase in frequency and intensity of heavy rainfall events over the southern mid-latitudes. This hemispheric response pattern projects strongly onto a previously identified pattern of seasonal mean precipitation response, both of which are shown to be likely of dynamic rather than thermodynamic origin. The full abstract can be found here.