The ozone layer protects life on Earth from ultraviolet solar radiation and plays an important role on the radiation budget of the atmosphere. Its evolution is intimately coupled to climate change.  Ozone_cci aims at generating new high-quality satellite data sets that are essential to assess the fate of atmospheric ozone and better understand its link with anthropogenic activities.

Schematic of measured and projected evolution of total ozone in response to the combined effect of ozone-depleting substances and climate change. Uncertainties on model predictions remain large.