To support the WMO/UNEP Scientific Assessment of Ozone Depletion Report 2022, we are asking modelling groups to perform a number of simulations to allow for both an assessment of the models, the first comprehensive assessment of model performance since CCMVal-2 in 2010, and scenarios to project ozone recovery.

An initial version of the data request for all model experiments can be found here.

The hindcast simulation using specified SSTs and sea-ice from observations, the REF-D1 experiment, is to be run for 1960 -2018, inclusive. A detailed description of the experiment setup can be found here.