By addressing tropospheric ozone, we can unlock near-term climate benefits while mitigating a pollutant that disproportionately affects vulnerable communities in the Global South and damages crops. This site aims to share knowledge, foster dialogue and inspire urgent policy and technological solutions to curb its emissions and impacts.

We will release a comprehensive policy report that makes the case for action on tropospheric ozone during COP29.

The policy report will provide insights and outline actionable strategies that can strengthen global climate management efforts and enhance national and regional commitments. Over the coming months, we will continue to make this case via compelling technical reports and a long-term blueprint for action on tropospheric ozone.

We invite the scientific community, civil society organizations, and UNFCCC member governments to actively engage with this topic through upcoming presentations and virtual events. We look forward to collaborating, sharing insights, and driving forward impactful solutions to address tropospheric ozone and other super pollutants.

This site will remain open until COP30 next year, serving as a continued hub for collaboration and knowledge exchange. We encourage stakeholders to use this platform to host their own virtual COP29 to COP30 events, focusing on the intersections of short-lived climate forcers, air quality, and climate change.

Our vision is that our collective efforts to tackle super pollutants — responsible for approximately 45% of global warming — will become an integral part of climate change solutions. Tropospheric ozone causes approximately 0.25°C of present-day warming. We’re calling on governments to develop action plans that urgently address the specific challenges of tropospheric ozone to deliver cleaner air, improved health and reduced global warming. Let’s seize this opportunity to accelerate progress and safeguard our planet for future generations.