The primary goal of OptimESM is to develop the next generation of ESMs, bringing together increased model resolution and process realism, and to deliver long-term climate projections that better support policy and societal needs, providing guidance on regional climate change at different levels of global warming, the risk of abrupt Earth system changes at these warming levels and the regional impacts arising from such events.

OptimESM will develop a novel generation of Earth system models to deliver cutting-edge and policy-relevant knowledge around the consequences of global warming, including the risk of rapid change in key Earth system phenomena and regional impacts.