Cities worldwide are increasingly exposed to compound extreme weather and climate events—hazard combinations that occur concurrently, in close sequence, or across connected regions, such as heatwave–drought co-occurrence, storm surge coinciding with pluvial flooding, or extreme heat following tropical cyclones. Because their drivers interact and their impacts cascade through critical infrastructure, ecosystems, and vulnerable populations, compound events often inflict damages far exceeding the sum of individual hazards, challenging conventional single-hazard approaches to urban risk management.

This session aims to bring together researchers across climate science, hydrology, urban studies, engineering, and disaster risk reduction to advance the understanding, prediction, and governance of compound extremes in urban environments. We welcome contributions addressing, but not limited to:

1. Physical drivers and dynamics of compound events (concurrent, sequential, and spatially compounding) in a changing climate;

2. Detection, attribution, and projection of compound extremes using observations, reanalyses, climate model ensembles, and event storylines;

3. Novel analytical and modeling approaches, including statistical dependence modeling, machine learning, and AI-based methods;

4. Impacts of compound events on urban systems, including infrastructure networks, public health, energy and water security, and cascading or compounding risks;

5. Assessment and enhancement of urban resilience, including risk assessment frameworks, early warning systems, adaptation planning, nature-based solutions, and governance strategies;

6. Case studies from diverse urban contexts—including the Global South—and co-production approaches engaging stakeholders and practitioners.

We particularly encourage interdisciplinary submissions, contributions from early-career scientists, and studies that bridge the gap between hazard science and actionable resilience planning for cities.