Proposed Topic description: Approximately 40% of the world's population resides within 100 km of the coastline, and coastal infrastructure handles up to 90% of international trade. The current record indicates a noticeable rise in coastal sea surface temperatures, which can potentially exacerbate coastal extreme events Coastal-urban areas are confronted with a multitude of challenges, including sea-level rise, alterations in river discharge patterns and flood recurrence intervals, shifts in the frequency, intensity, and duration of extreme events, coastal erosion, and the persistent expansion of urbanization itself. The interconnected nature of these challenges further complicates the planning of coastal-urban infrastructure and adaptation strategies. Urgent advancements are needed in comprehending those processes and their interactions to enhance forecasting techniques and Earth system models (ESMs). This will enable more precise modeling of specific events that have an impact on coastal and urban systems, ultimately supporting the resilience of energy and infrastructure. In this session, we invite submissions that investigate the processes associated with coastal urban thermodynamic and aerodynamic effects, urban aerosols, and their interactions with natural processes such as sea breezes.