What is a Chief Heat Officer?
Extreme heat poses great risks to cities and will continue to grow more dangerous each year. Cities are already hotter than surrounding areas due to the urban heat island effect, and as urban population growth continues to rise, so too will the number of people impacted by this threat. By 2050, heat waves will affect more than 3.5 billion people worldwide – half of them living in urban centers—affecting human lives and livelihoods.
To address this danger, Arsht-Rock created and piloted the world’s first Chief Heat Officer (CHO) positions. These officials are responsible for unifying their city governments’ responses to extreme heat. They are charged with accelerating existing heat protection efforts and initiating new work to reduce the risks and impacts of extreme heat for their residents and constituents.
Arsht-Rock works hand-in-hand with the CHOs to identify, develop, and implement strategies and priorities, accelerating heat resilience in the short term, and laying a foundation for sustained resilience in the medium, and long term.
Why do cities need Chief Heat Officers?
Climate change is amplifying the “heat island effect,” where cities are often several degrees hotter than nearby rural areas. This is caused by materials prevalent in urban environments, like concrete and metal, absorbing and radiating heat, and exacerbated by limited green public spaces, which would help cool communities.
About 20 percent of the most populated cities in the world could warm by more than 4°C by 2050 and about 25 percent could warm by more than 7°C by 2100. This will have a profound impact on the people living there. By the year 2050, heat waves are forecast to contribute to nearly 1.6 million fatalities, many of which will be concentrated in cities. Furthermore, the average city could lose about 1.4–1.7 percent of GDP by 2050 and 2.3–5.6 percent of GDP by 2100 to heat-related losses, and the worst-off cities could lose 10.9 percent of GDP to heat by 2100.
What does a Chief Heat Officer do?
A major challenge in tackling heat at the city level is that while many city government departments oversee heat wave-related preparedness and recovery, they often do not have a unified response which would enable them to identify and target the most pressing problems most effectively. This can make it difficult to align their efforts with community organizations and other stakeholders which may also be working to address this issue. By putting one person in charge of coordinating dispersed efforts both inside city government and across the private sector, this role helps to break down silos and make the greatest impact for the most vulnerable communities.
Chief Heat Officers’ core responsibilities include:
- Raise awareness of extreme heat risk and solutions with their constituents and peers
- Identify communities and neighborhoods which are most vulnerable to extreme heat
- Work to improve planning and response to heat waves
- Coordinate stakeholders
- Implement long-term heat risk-reduction and cooling projects
How are Chief Heat Officers appointed?
Chief Heat Officers are appointed by local officials who have made heat action a priority for their government. When mayors or other leaders create an officer position and appropriate resources to fight the impacts of extreme heat, they are investing in a more climate-resilient future and reducing current losses in lives and livelihoods to the climate crisis.
Many of the CHOs were appointed by City Champions for Heat Action, a global network of mayors and partner cities that drive climate resilience through targeted advocacy work, innovative solutions, and their example of climate leadership. These mayors were identified by Arsht-Rock for their meaningful commitment to climate resilience and adaptation in their respective cities.
Meet our Chief Heat Officers
Since the first CHO was appointed in 2021, these climate leaders have taken critical action in their respective cities. They have spearheaded projects that range from installing cool pavements and roofs to mitigate the heat island effect, to categorizing heatwaves to help residents prepare for extreme events, to planting trees to create canopy. Through their advocacy and project implementation, they are critical to increasing urban populations’ resilience.
Our newly appointed global Chief Heat Officer
On June 29, Eleni Myrivili became the first global Chief Heat Officer through a joint appointment by UN-Habitat and Arsht-Rock.
Eleni will facilitate the collaborative partnership between the two organizations, bringing resources to UN-Habitat cities & sharing adaptation solutions that protect people & livelihoods.
