We conduct research to inform evidence-based heat governance, including policy, planning, and regulation, to protect vulnerable populations and communities. The work focuses on providing solutions to proactively address heat exposure where people live, work, and go to school — before it becomes an acute health emergency. Our research includes assessing how to make cities more heat resilient through physical interventions and adaptations to protect public health. Research areas include:

Our research is regularly covered in the news, including coverage by: CNN, LA Times, NPR, NBC, and USA Today. The work includes visuals on urban heat and cool design solutions; collaborations with artists to create “Cool” Murals and with communities on shade structures; policy briefs; data mapping tools; as well as research reports and journal articles. See examples below.

For media inquiries, please contact Dr. V. Kelly Turner:
vkturner@ucla.edu

An example of courtyard shade and a nature-based outdoor learning environment at Esperanza Elementary School, Los Angeles. Photo credit: V. Kelly Turner / UCLA Luskin.

Heat Governance and Policy

Researchers: V. Kelly Turner, Ariane Middel, and Jennifer K. Vanos

Shade is an essential solution for hotter cities. The researchers provide specific recommendations for municipal decision-makers to reduce shade deserts which are most experienced by those in low-income communities, exacerbating heat-health disparities.

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Researchers: Colleen Callahan, Lauren Dunlap, Michelle Gallarza, Rae Spriggs, and V. Kelly Turner
Funder: Resource Legacy Fund

While California is planning for rising temperatures with its new Extreme Heat Action Plan, the state has not historically treated extreme heat as a social equity and public health crisis that requires targeted and robustly funded action to save lives. Our policy brief series can help inform policy and budget decisions.

Media coverage on heat-resilient schools research includes: NBCLos Angeles Times, and The Sacramento Bee, among others. A recent lecture on Reducing Extreme Heat & Supporting Thermal Comfort With Schoolyard Forests starts at minute 8:05.

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Researchers: C.J. Gabbe, Jamie Suki Chang, Morayo Kamson, and Euichan Seo
Funder: Santa Clara University Environmental Justice and the Common Good Research Grant

In this study, the researchers identified where unhoused residents in Santa Clara County were disproportionately exposed to heat and how they coped. They found that unhoused participants favored staying in places where they had more stability but these locations tended to have less access to shade and water, thus they faced difficult trade-offs.

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Planning for Heat Resilient Communities

Researchers: V. Kelly Turner, Ariane Middel, and Jennifer K. Vanos

Shade is an essential solution for hotter cities. The researchers provide specific recommendations for municipal decision-makers to reduce shade deserts which are most experienced by those in low-income communities, exacerbating heat-health disparities.

Read More

Researchers: Colleen Callahan, Lauren Dunlap, Michelle Gallarza, Rae Spriggs, and V. Kelly Turner
Funder: Resource Legacy Fund

While California is planning for rising temperatures with its new Extreme Heat Action Plan, the state has not historically treated extreme heat as a social equity and public health crisis that requires targeted and robustly funded action to save lives. Our policy brief series can help inform policy and budget decisions.

Media coverage on heat-resilient schools research includes: NBCLos Angeles Times, and The Sacramento Bee, among others. A recent lecture on Reducing Extreme Heat & Supporting Thermal Comfort With Schoolyard Forests starts at minute 8:05.

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Researchers: C.J. Gabbe, Jamie Suki Chang, Morayo Kamson, and Euichan Seo
Funder: Santa Clara University Environmental Justice and the Common Good Research Grant

In this study, the researchers identified where unhoused residents in Santa Clara County were disproportionately exposed to heat and how they coped. They found that unhoused participants favored staying in places where they had more stability but these locations tended to have less access to shade and water, thus they faced difficult trade-offs.

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Actionable Data for Heat Health Equity

Researchers: V. Kelly Turner, Ariane Middel, and Jennifer K. Vanos

Shade is an essential solution for hotter cities. The researchers provide specific recommendations for municipal decision-makers to reduce shade deserts which are most experienced by those in low-income communities, exacerbating heat-health disparities.

Read More

Researchers: Colleen Callahan, Lauren Dunlap, Michelle Gallarza, Rae Spriggs, and V. Kelly Turner
Funder: Resource Legacy Fund

While California is planning for rising temperatures with its new Extreme Heat Action Plan, the state has not historically treated extreme heat as a social equity and public health crisis that requires targeted and robustly funded action to save lives. Our policy brief series can help inform policy and budget decisions.

Media coverage on heat-resilient schools research includes: NBCLos Angeles Times, and The Sacramento Bee, among others. A recent lecture on Reducing Extreme Heat & Supporting Thermal Comfort With Schoolyard Forests starts at minute 8:05.

Read More

Researchers: C.J. Gabbe, Jamie Suki Chang, Morayo Kamson, and Euichan Seo
Funder: Santa Clara University Environmental Justice and the Common Good Research Grant

In this study, the researchers identified where unhoused residents in Santa Clara County were disproportionately exposed to heat and how they coped. They found that unhoused participants favored staying in places where they had more stability but these locations tended to have less access to shade and water, thus they faced difficult trade-offs.

Read More

Heat Governance and Policy

Shade is an Essential Solution for Hotter Cities (2023 commentary in Nature)

Researchers: V. Kelly Turner, Ariane Middel, and Jennifer K. Vanos

Shade is an essential solution for hotter cities. The researchers provide specific recommendations for municipal decision-makers to reduce shade deserts which are most experienced by those in low-income communities, exacerbating heat-health disparities.

Guidance for an Equitable and Effective Extreme Heat Strategy in California (2022-23 policy brief series)

Researchers: Colleen Callahan, Lauren Dunlap, Michelle Gallarza, Rae Spriggs, and V. Kelly Turner
Funder: Resource Legacy Fund

While California is planning for rising temperatures with its new Extreme Heat Action Plan, the state has not historically treated extreme heat as a social equity and public health crisis that requires targeted and robustly funded action to save lives. Our policy brief series can help inform policy and budget decisions.

Media coverage on heat-resilient schools research includes: NBC, Los Angeles Times, and The Sacramento Bee, among others. A recent lecture on Reducing Extreme Heat & Supporting Thermal Comfort With Schoolyard Forests starts at minute 8:05.

Reducing Heat Risk for People Experiencing Unsheltered Homelessness (2023 article in the International Journal of Disaster Risk Reduction)

Researchers: C.J. Gabbe, Jamie Suki Chang, Morayo Kamson, and Euichan Seo
Funder: Santa Clara University Environmental Justice and the Common Good Research Grant

In this study, the researchers identified where unhoused residents in Santa Clara County were disproportionately exposed to heat and how they coped. They found that unhoused participants favored staying in places where they had more stability but these locations tended to have less access to shade and water, thus they faced difficult trade-offs.

Deploy Heat Officers, Policies and Metrics (2021 commentary in Nature)

Researchers: Ladd Keith, Sara Meerow, David M. Hondula, V. Kelly Turner & James C. Arnott

This article calls for cities to take action to manage and mitigate heat, with a focus on leadership, policies, and actionable data, with equity as its core. It lays out some common-sense first steps that cities can take.

Adapting to Extreme Heat in California: Assessing Gaps in State-Level Policies and Funding Opportunities (2021 report)

Researchers: J.R. DeShazo, Lolly Lim, and Gregory Pierce
Funder: Strategic Growth Council Climate Change Research Program

This report examines the network of programs and funding opportunities that address heat in the state — most of which do not explicitly or intentionally target heat risk — and identifies the missing pieces that can help protect residents.

Planning for Heat Resilient Communities

Creating a Heat-Resilient L.A. (current project)

Lead researchers: V. Kelly Turner, David P. Eisenman, Eric Hoek, Cara Horowitz, Travis Longcore
Funder: UCLA Sustainable Grand Challenge Sandpit Program

LCI is part of a nearly $1 million interdisciplinary research award to determine where and when people moving around LA are most vulnerable to the effects of extreme heat and to assess which communities most need cooling interventions. The researchers will engage directly with communities to produce the best possible designs and locations for cooling structures.

Recommendations for Designing Cost-Effective Outdoor Cooling Interventions in Micro-climate Zones (current project)

Researchers: Kelly Turner and Ariane Middel
Funder: California Strategic Growth Council

The researchers are collaborating with the frontline communities of Eastern Coachella Valley, Ontario, Pacoima in the NE San Fernando Valley of LA, and Watts in South LA on rigorous outcome-based research those most vulnerable to climate change impacts. The broader aim is to empower communities to implement cooling solutions for bus stops and other streetscapes to facilitate the increased use of transit and active transportation, in order to reduce pollution while creating climate-resilient neighborhoods.

Examining the Origin of Heat Inequities: A Case Study of Watts, Los Angeles (current project)

Researchers: Kelly Turner, Mark Vestal, and Bharat Venkat
Funder: UCLA Transdisciplinary Research Acceleration Grant

This first-of-its-kind study aims to answer: How did communities of color become disproportionately burdened by extreme heat? In a case study of Watts, Los Angeles — a historically Black neighborhood where temperatures are 4.7°F hotter than the city average — the team is examining how the neighborhood’s microclimate has changed over time to pinpoint what discriminatory interventions contributed to the present-day heat burden.

Reducing Heat Risk for People Experiencing Unsheltered Homelessness (2023 article in the International Journal of Disaster Risk Reduction)

Researchers: C.J. Gabbe, Jamie Suki Chang, Morayo Kamson, and Euichan Seo
Funder: Santa Clara University Environmental Justice and the Common Good Research Grant

In this study, the researchers identified where unhoused residents in Santa Clara County were disproportionately exposed to heat and how they coped. They found that unhoused participants favored staying in places where they had more stability but these locations tended to have less access to shade and water, thus they faced difficult trade-offs.

How Are Cities Planning for Heat? Analysis of United States Municipal Plans (2022 article in Environmental Research Letters)

UCLA researchers: V. Kelly Turner, Emma M. French, John Dialesandro, and Hana Abdellati

Through analysis of municipal planning documents from 50 large cities across the country, the study found that 78% of these cities’ climate plans mentioned heat as a problem. And yet, few offered a comprehensive strategy to address it — and even fewer addressed the disproportionate impact heat has on low-income residents and communities of color. 

More than Surface Temperature: Mitigating Thermal Exposure in Hyper-Local Land System (2022 article in Journal of Land Use Science, Women in Science edition)

Researchers: V. Kelly Turner, Emma M French, John Dialesandro, and Hana Abdelatty

This study examines how the temperature data decision makers use to inform their policies may not accurately represent how heat affects people. The study authors call for more comprehensive data, including humidity and shade, and improved climate literacy among policymakers and planners to understand the complex dynamics of managing urban heat. 

High Temperatures and Electricity Disconnections for Low-income Homes in California (2022 article in Nature Energy)

Researchers: Alan Barreca, R. Jisung Park, and Paul Stainier
Funding included support from: California Strategic Growth Council

This study examines electricity use and disconnection data from 2012–2017. It finds that each additional day with a maximum temperature of 95 °F causes electricity expenses to increase by 1.6%, and the relative risk of disconnection to increase by 1.2%.

Households Living in Manufactured Housing Face Outsized Exposure to Heat and Wildfire Hazards: Evidence from California (2022 article in Natural Hazards Review)

Researchers: Gregory Pierce, C.J. Gabbe, and Annabelle Rosser
Funding included support from: California Strategic Growth Council

The study finds that households in manufactured housing face consistently higher exposure to extreme heat and wildfires. This research underscores the necessity to strengthen the resilience of existing manufactured housing, provide more affordable housing alternatives in less exposed locations, and limit the growth of new housing in highly exposed areas.

Housing and Urban Heat: Assessing Risk Disparities (2022 article in Housing Policy Debate)

Researchers: C.J. Gabbe, Evan Mallen, and Alexander Varni

The researchers find that households in detached single-family homes have the lowest heat risk and multifamily renters have the highest heat risk. AC availability is a major contributing factor and there are heat risk disparities for households in neighborhoods with larger proportions of Hispanic and Asian residents.

Why and How Do Cities Plan for Extreme Heat? (2021 article in Journal of Planning Education and Research)

Researchers: C.J. Gabbe, Gregory Pierce, Emily Petermann, and Ally Marecek
Funder: Strategic Growth Council Climate Change Research Program

This paper studies municipal heat adaptation using survey and planning data from California. The researchers found that cities with heat-related policies have greater degrees of projected extreme heat, leadership support, environmental justice planning, and smaller Hispanic population shares. In the large cities studies, some strategies, such as expanding tree canopies, have been widely adopted while others have been rarely included.

How Are U.S. Cities Planning for Heat? (2021 database)

Researchers: Kelly Turner, Emma French, and David Hondula

Researchers developed an open source database of 175 adopted management plans that mention heat from the 50 most populous cities in the US.

Extreme Heat Vulnerability of Subsidized Housing Residents in California (2020 article in Housing Policy Debate)

Researchers: C.J. Gabbe and Gregory Pierce
Funding included support from: California Strategic Growth Council

The researchers find that subsidized housing is disproportionately located in census tracts at the intersection of high projected extreme heat days (in 2040s), heat-sensitive populations, and barriers to adaptation. These findings indicate the need for targeted housing and land use policy interventions to reduce heat vulnerability.

Solar Reflective Pavements—A Policy Panacea to Heat Mitigation? (2020 article in Environmental Research Letters)

Researchers: Ariane Middel, Kelly Turner, Florian Schneider, Yujia Zhang, and Matthew Stiller

Awarded as the best 2020 paper by the Climate Specialty Group of the Association of American Geographers, this study collected the first field temperature measurements of solar reflective pavement. It found that surface temperatures decreased as expected, but human thermal comfort increased midday. It foregrounds the importance of planning context when locating cooling interventions.

Actionable Data for Heat Health Equity

Site Design and Human Heat Burden: A Case Study in Pacoima (2023 report)

Researchers: Kelly Turner, Ariane Middel, Morgan Rogers, Ruth Engel, Florian A. Schneider, and Zachary Van Tol
Funded by: Community Partners through the Strategic Growth Council Transformative Climate Communities evaluation funding

This study examines how urban design influences the human experience of heat in Pacoima, a neighborhood in the San Fernando Valley region of Los Angeles. Researchers find the primary factor in reducing heat burden is availability of shade.

UCLA Researchers Study Impacts of Streets on Urban Heat (2023 story and article in Environmental Research Communications and Transfer Magazine)

Researchers: Kelly Turner, Ruth Engel, and Adam Millard-Ball

Researchers find that the contributions of roads to land surface temperature are not large enough to offset conditions in the areas surrounding them. They also find that trees are the largest contributor to lowering land surface temperature, more so than impervious surface reflectivity.

California Healthy Places Index: Extreme Heat Edition (2022 data mapping tool)

Jointly created by: LCI and the Public Health Alliance of Southern California

This index is an interactive tool designed to help the state ramp up its efforts to prepare for rising temperatures — visualizing where and who will be most affected, and where decision-makers should target investments.

Temperature, Workplace Safety, and Labor Market Inequality (2021 article in IZA Institute of Labor Economics)

Researchers: R. Jisung Park, Nora Pankratz, and A. Patrick Behrer
Funding included support from: Strategic Growth Council

This is one of the most comprehensive assessments of temperature on workplace health and safety, and the first assessment of potential implications for labor market inequality. The study finds that workplace injuries linked to heat are significant but extremely undercounted for both indoor and outdoor workers.

Coverage included features in The Guardian, The New York Times, and Los Angeles Times, along with testimony by Professor Park at a U.S. Congressional hearing.

Heat and Learning (2020 article in American Economic Association)

Researchers: Joshua Goodman, Michael Hurwitz, R. Jisung Park, and Jonathan Smith

This research, and fact sheet, quantifies how cumulative heat exposure affects learning. Without air conditioning (AC), a 1°F hotter school year reduces student learning by 1%. The researchers also identify how school AC can mitigate this effect, and that low-income and minority students have less access to adequate AC, contributing to the racial achievement gap.

This research garnered over 100 media stories including: an op-ed in USA Today, and coverage by PBS News, The Washington Post, TalkPoverty, KPCC Radio, ClimateWire, and America Adapts, among many other major outlets.

Hot Temperature and High Stakes Cognitive Assessments (2020 article in the Journal of Human Resources)

Researcher: R. Jisung Park

This study provides the first estimates of the impact of hot temperatures on high-stakes exam performance and subsequent educational attainments. Hot days reduce performance by up to 15% and have persistent effects on high school graduate status.

Media coverage: The New York Times, BBC News, The 74 Million, Joongang Ilbo (Korean Daily)

The Impact of High Temperatures on Delivery Timing and Gestational Lengths (2019 article in Nature Climate Change)

Researchers: Alan Barreca and Jessamyn Schaller

This study links early childbirths to hotter temperatures due to climate change. It received press coverage by CNN, TIME, The Conversation, and USA Today, among others.

Will We Adapt? Temperature, Labor and Adaptation to Climate Change (2018 working paper as part of broader ongoing study)

Researchers: R. Jisung Park and Patrick Behrer

This national study explores heat-related labor impacts. Findings include that hot temperatures exert a causal negative impact on county-level payroll – reducing payroll by several percentage points in a 2◦C hotter year – with larger impacts in highly exposed industries, such as construction and manufacturing. 

Maybe Next Month? Temperature Shocks and Dynamic Adjustments in Birth Rates (2018 article in Demography)

Researchers: Alan Barreca, Olivier Deschenes, and Melanie Guldi

In this study, researchers estimated the effects of temperature shocks on birth rates in the US between 1931 and 2010. They found that global warming is making it more difficult for couples to conceive. Specifically, days with a mean temperature above 80°F cause a large decline in birth rates eight to ten months later.

This study was widely cited by the media, including CNN, Reuters, CityLab, and more.