Hurricane modification and adaptation in Miami-Dade County, Florida

Area of Science:

• Environmental science
• Climate change adaptation
• Coastal engineering

Background:

• Tropical cyclones pose significant risks to coastal communities.
• Miami-Dade County is particularly vulnerable to storm surge and high winds.
• Existing damage reduction strategies require further evaluation.

Purpose of the Study:

• To investigate tropical cyclone wind and storm surge damage reduction strategies for Miami-Dade County.
• To compare the effectiveness of building hardening versus hypothetical wind-wave pumps.
• To estimate economic losses and identify optimal mitigation approaches.

Main Methods:

• Calculated surge height and wind speed based on return period and sea surface temperature.
• Utilized the FEMA HAZUS-MH MR3 damage model and census data.
• Estimated costs and economic losses for various damage reduction scenarios.

Main Results:

• Surge damages dominate for shorter return periods, while wind damages are more significant for longer return periods.
• The critical return period for hazard component switch varies by location.
• Surge barriers are most effective for reducing surge damages.

Conclusions:

• A combination of strategies, including surge barriers and potentially wind-wave pumps, can effectively reduce tropical cyclone damages.
• The optimal mix of strategies depends on the specific location and hazard characteristics.
• Further research into the efficacy and deployment of wind-wave pumps is warranted.