Ozone affects a wide range of environmental parameters, with both direct and indirect adverse effects on human health, ecosystem functioning and food production. This incorporates, for instance, climate interactions (effects of ozone depletion/recovery on surface climate) as well as effects of changes in climate variables (e.g., sea-ice extent, greenhouse gas emissions, biogeochemical cycles, etc.) on stratospheric ozone. Effects of changes in stratospheric ozone on health and ecosystems (terrestrial and aquatic), mediated through changes in surface ultraviolet radiation present challenges in addition to effects of changes in stratospheric ozone on tropospheric ozone and, generally, air quality. This session invites contributions on topics addressing both direct and indirect ozone effects, their quantification on human health, ecosystem services and biodiversity, and agricultural production and crop yields.