This session presents key findings from the IPCC Special Report on Climate Change and Cities and invites research on the physical science basis of urban climate change and its implications for policy. Topics include two-way interactions between cities and weather and climate, urban emissions of greenhouse gases and air pollutants, urban climate hazards and risks, and the observations, models and climate services that underpin urban climate information and decision-making. Additional topics include urban adaptation and mitigation solutions, their effectiveness, challenges and prospects.

Solicited talks by report authors will highlight key findings from the assessment, followed by contributed presentations addressing its core physical science topics. We invite contributions on: interactions between cities and the climate system across scales, including urban modification of temperature, precipitation, wind and boundary layer processes; urban climate hazards and risks, including heat, flooding, water scarcity, storms and compound and cascading events under historical and future climates; the knowledge base for urban climate information, namely through observations, urban climate projections, high-resolution and city-scale modelling and climate services that support urban climate information; and how urban climate science can support decision-making across multiple levels of governance. We also welcome contributions on urban adaptation and mitigation solutions, including assessments of their effectiveness, barriers and enabling conditions, and their implications for policy.

We particularly welcome contributions from under-represented regions and works with a focus on rapidly developing and small and medium sized cities.