Cities worldwide face increasing challenges in adapting to the devastating effects of severe weather events, including flooding, hurricanes, and rising temperatures. New York City, severely impacted by Hurricane Sandy in 2012, has developed the Financial District and Seaport Climate Resilience Master Plan (FiDi) as part of its effort to enhance climate resilience in Lower Manhattan. This study evaluates the local economic, environmental, and fiscal impacts of implementing this plan, which represents a US$5 to US$7 billion investment over 10 to 15 years. Using a multi-regional input–output (MRIO) modeling approach, we capture the economic interactions between Lower Manhattan and other New York City boroughs, as well as spillover effects across New York State. We address the substantial uncertainties surrounding the plan’s execution by integrating the S-curve framework to simulate financial disbursement patterns over time. This framework allows for periodic cost–benefit analysis. Our results indicate that the FiDi plan might generate significant net economic benefits, though concentrated environmental impacts occur during specific implementation phases. Tax revenue effects reveal opportunities for enhanced coordination among federal, state, and local governments to support urban resilience initiatives. This research contributes to the literature by demonstrating the utility of combining MRIO modeling with the S-curve framework to address financial uncertainties and assess large-scale infrastructure projects before their implementation. It also offers a replicable framework for ex-ante simulation of the economic and environmental trade-offs of climate resilience projects in cities globally.
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