“A 'barrier' of cool surfaces preemptively cools the warm air, which then cools the rest of the city at a fraction of the cost. On the other
Most urban cooling strategies, such as cool (white), green, and blue spaces, provide better thermal performance during the daytime than at night.
These innovative approaches could bring temperatures down in our cities. For more by The B1M subscribe now - http://ow.ly/GxW7y Read the
Find a green area, such as your backyard, and water all trees, plants, and soil. After just a few minutes, the air might feel cooler as the
In most cities, the abundance of dark, impervious surfaces, like asphalt, traps heat and drives temperatures up — contributing to the urban heat island effect. **There's** **more than one way to measure heat****.** Looking at different metrics offers a more complete picture of how effective heat solutions are — from lowering the air temperature outside to changing how hot it feels. When evaluating these solutions, it's important to consider their impact on the heat index — a metric which combines air temperature and humidity — to more accurately assess how people feel outside. To accomplish this, it could blend broad and localized strategies: A citywide effort to implement cool roofs and cool pavements would increase reflectivity across large surface areas, helping to reduce heat absorption and bring down air temperatures for the whole city. **Cool without adding humidity:** Reduce air temperatures without contributing additional humidity to the urban environment, to manage the heat burden of an area as defined by heat index.
As summer temperatures continue to rise and urban heat islands experience the intensifying effects of the climate crisis, resilient cooling solutions are critical to ensuring cities remain livable and their…. As summer temperatures continue to rise and urban heat islands experience the intensifying effects of the climate crisis, resilient cooling solutions are critical to ensuring cities remain livable and their residents safe. This toolkit is designed to help community leaders, mission-driven nonprofits, and city governments implement equitable cooling strategies for those most affected by climate change. By addressing site-specific conditions and leveraging existing infrastructure, this guide provides practical solutions and inspiration for creating cooling interventions that activate and enhance urban spaces. At work in over 100 cities worldwide, the Resilient Cities Network supports on-the-ground projects and solutions to build climate resilient, circular and equitable cities while also facilitating connections and information-sharing between communities and local leaders. In addition to architectural services, we love to create clear, easy-to-understand resources that build community agency and share design knowledge with a broad public.
As heat intensifies in cities, this digest argues that solar-powered open-air cooling shelters can play a critical role in a layered urban cooling strategy—providing resilient, low-energy relief that complements cooling centers and remains operational during power outages. Within cities, specific neighborhoods experience significantly higher temperatures than others, creating local “hot spots.” These disparities can lead to disproportionate exposure to extreme heat, particularly affecting marginalized and vulnerable populations, which are more likely to live in historically redlined communities with limited tree canopy, extensive impervious surfaces, and limited access to cooling (Bird 2022; Philadelphia Office of Sustainability 2019; Plumer et al. In contrast, active solutions like air-conditioned cooling centers—designated existing public buildings such as libraries and malls—are a widely adopted intervention for mitigating extreme heat, implemented in many cities across the U.S. and worldwide (Bedi et al. Locally, Philadelphia’s Beat the Heat program engages residents through heat vulnerability mapping, neighborhood ambassadors, and tailored education on accessing cooling centers, water, and shade (Office of Sustainability n.d.).
On October 5, 2023, the Stanford Woods Institute for the Environment hosted a webinar to explore a range of options for addressing heat challenges in cities. “When you compare a low income community in an urban heat island to one in west Los Angeles…the big difference is nature,” says Marta Segura, Chief Heat Officer for the city of Los Angeles. Los Angeles is one of the first US cities to proactively address the problem of urban heat islands through the development of a Heat Action Plan. “One of the things we pursued (to address this) is to develop paintings on the wall that are strongly reflective for thermal radiation, therefore getting better insulation of the inside of the building from the outside and reducing electricity consumption.” The materials developed in Fan’s lab could even be added into clothing to enhance heat dissipation from human bodies and keep wearers more cool.