Benefit-Cost Analysis of Coastal Flooding Adaptation Objectives at Global Scale

Four distinct adaptation objectives for grey infrastructure are evaluated, including keeping protection levels constant and optimizing for net present value. Results for each objective include future protection standards, changes in risk relative to GDP, benefit-cost ratios, and net present values across various RCP-SSP combinations for sub-national regions. The analysis was conducted by Timothy Tiggeloven of Vrije Universiteit Amsterdam.

Use Cases

• Compare the long-term economic efficiency of different coastal protection strategies based on the four adaptation objectives.
• Model future coastal flood risk under different climate and socioeconomic scenarios (RCP-SSP combinations).
• Evaluate the net present value of grey infrastructure investments for coastal defense at a sub-national level.
• Assess changes in expected annual damage relative to GDP under constant absolute or relative risk objectives.

Strengths

• Compares four distinct adaptation policy objectives, providing a multi-faceted view of coastal defense options.
• Provides results at a sub-national regional scale for a global analysis, offering granular insights.
• Evaluates scenarios across multiple Representative Concentration Pathway and Shared Socioeconomic Pathway (RCP-SSP) combinations.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific modeling tasks.
• Data may reflect methodological or geographic bias inherent to the modeling approach described.

Provenance

Source

Timothy Tiggeloven, Vrije Universiteit Amsterdam

Collection Method

Benefit-cost analysis modeling of grey infrastructure adaptation to coastal flooding.

Geography

Global, with sub-national regional results