Shifting Federal Investments To Address Extreme Heat Through Green And Resilient Infrastructure
Sourced from Federation of American Scientists
“Under the President’s direction, every Federal department and agency is focused on strengthening the Nation’s climate resilience, including by tightening flood risk standards, strengthening building codes, scaling technology solutions, protecting and restoring our lands and waters, and integrating nature-based solutions.” – National Climate Resilience Framework
Now more than ever, communities across the country need to adopt policies and implement projects that promote climate resilience. As climate change continues to impact the planet, extreme heat has become more frequent. To address this reality, the federal government needs to shift as much of its infrastructure investments as possible away from dark and impervious surfaces and toward cool and pervious “smart surfaces.”
By ensuring that a more substantial portion of federal infrastructure investments are designed to address extreme heat and climate change, instead of exacerbating the problem like many investments are doing now, the government can ensure healthy and livable communities. Making improvements, such as coating black asphalt roads with higher albedo products, installing cool roofs, and increasing tree and vegetative cover, results in positive social, political, and economic effects. Investments in safe and resilient communities provide numerous benefits, including better health outcomes, higher quality of life, an increase in proximal property values, and a reduction in business disruption. By making these changes, policymakers will engender significant long-term benefits within communities.
Challenge And Opportunity
Extreme heat events—a period of high heat and humidity with temperatures above 90°F for at least two to three days—are the leading cause of weather-related fatalities in the United States among natural disasters. Recent surges in extreme heat have led to summers now commonly 5–9°F hotter city-wide, with some neighborhoods experiencing as much as 20°F higher temperatures than rural areas, an outcome commonly referred to as the urban heat island (UHI) effect. More than 80% of the U.S. population lives in cities experiencing these record-breaking temperatures.
Extreme Heat and External Impacts
As populations in urban areas continue to grow, their density will further increase the urban heat island effect and exacerbate heat inequities in the absence of more resilient infrastructure investments. Between 2004 and 2018, the Centers for Disease Control and Prevention (CDC) recorded 10,527 heat-related deaths in the United States, an average of 702 per year. In their report, the CDC emphasized that many of these deaths occurred in urban areas, particularly in low-income and communities of color. Lower-income neighborhoods commonly have fewer trees and darker surfaces, resulting in temperatures often 10–20°F hotter than wealthy neighborhoods with more trees and green infrastructure.
A wide range of other consequences result from the rise in urban heat islands. For instance, as we experience hotter days, the warming atmosphere traps in more moisture, resulting in episodes of extreme flooding. Communities are experiencing a variety of impacts such as personal property damage, infrastructure destruction, injury, and increasing morbidity and mortality. In addition to the health impacts of extreme heat, increases in urban flooding also lead to long-term impacts such as disease outbreaks and economic instability due to the destruction of businesses. According to the Environmental Protection Agency (EPA), annual damages from flooding are expected to increase by 30% by the end of the century, making it more difficult for communities, particularly low-income and communities of color, to rebuild. Implementing climate-resilient solutions for extreme heat provides multiplicative benefits that extend beyond the singular issue of heat.
From the Living Architecture Monitor
