Waas-MR
Author(s): Julius Schlumberger, Marjolijn Haasnoot, Jeroen C. J. H. Aerts, Veerle Bril, Lars van der Weide, Marleen de Ruiter
Organisation(s)/Authors: Deltares
Description:
Waas-MR is a synthetic multi-risk test case developed to explore the effects of interacting climate hazards and sectoral dependencies on Disaster Risk Management (DRM) decision-making under deep uncertainty. Building on the original “Waas” case, Waas-MR incorporates dynamic interactions between floods and droughts and across sectors - specifically agriculture, shipping, and urban housing. It integrates multiple types of hazard interactions (e.g., droughts amplifying flood impacts, shifting risk perceptions over time) and models how these influence sectoral vulnerabilities and the uptake of DRM measures over a 100-year time horizon. The test case applies the DAPP-MR framework to evaluate sequences of DRM measures (i.e., pathways), highlighting how complex interactions can produce non-linear effects and cross-sectoral feedbacks. Conceptualized using the DPSIR framework, Waas-MR helps decision-makers identify which dependencies significantly affect system dynamics and strategy outcomes. It serves as a controlled environment to test the utility of staged, integrative DRM approaches for developing adaptive, cost-effective strategies in complex multi-risk contexts. The figure below shows a simplified representation of the Waas-MR after Schlumberger et al., 2024
Technical Considerations:
Python
Key Words:
Integrated Assessment Meta-Model, Policy Analysis, Flood, Drought
