Multi-lever Flood Risk Management
One near-to-medium-term effect of climate change is an increase in flooding hazard due to sea-level rise and changes in storm and precipitation patterns. 20th-century flood risk management focused on “hard” infrastructure such as levees and seawalls to control the flow of water. It is not clear that these strategies will be preferred in the future due to changes in risk from both the increased hazard and continued construction in flood-prone areas. Additionally, there are feedbacks between the human, built, and natural systems which lower the effectiveness of these measures and may perversely increase risk, particularly for the most vulnerable elements of society. We study multi-lever approaches to flood risk management, including hard infrastructure, zoning changes, and resilience-improving measures, and try to understand the magnitude and impact of feedbacks within the coupled natural-human system.
Climate Impacts on the Power System
When you think about “climate change” and “the electric power system,” the first thing that might come to mind is the need to decarbonize electricity generation to reduce greenhouse gas emissions. But future changes to environmental risks such as heat waves and flooding can reduce grid reliability while increasing demand. And California has seen blackouts resulting from attempts to manage wildfire risks by power utilities. We investigate the impact of these mechanisms under deep climate uncertainty for today’s decisions about energy system infrastructure investments.