skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Interactions between urban heat islands and heat waves

Journal Article · · Environmental Research Letters
ORCiD logo [1];  [2];  [3];  [4]; ORCiD logo [5];  [6]; ORCiD logo [7];  [8]
  1. Princeton Univ., NJ (United States). Program in Science, Technology and Environmental Policy (STEP)
  2. Princeton Univ., NJ (United States). Woodrow Wilson School of Public and International Affairs and Dept. of Geosciences
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Climate and Ecosystem Sciences Division, Climate Sciences Dept.
  4. Princeton Univ., NJ (United States). Program in Atmospheric and Oceanic Sciences (AOS)
  5. Univ. of Washington, Seattle, WA (United States). Dept. of Global Health
  6. Princeton Univ., NJ (United States). Dept. of Civil and Environmental Engineering
  7. Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Natural Resources and Environmental Sciences and National Center for Supercomputing Applications
  8. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). International Energy Analysis Dept., China Energy Group

Heat waves (HWs) are among the most damaging climate extremes to human society. Climate models consistently project that HW frequency, severity, and duration will increase markedly over this century. For urban residents, the urban heat island (UHI) effect further exacerbates the heat stress resulting from HWs. Here we use a climate model to investigate the interactions between the UHI and HWs in 50 cities in the United States under current climate and future warming scenarios. We examine UHI2m (defined as urban-rural difference in 2m-height air temperature) and UHIs (defined as urban-rural difference in radiative surface temperature). Our results show significant sensitivity of the interaction between UHI and HWs to local background climate and warming scenarios. Sensitivity also differs between daytime and nighttime. During daytime, cities in the temperate climate region show significant synergistic effects between UHI and HWs in current climate, with an average of 0.4 K higher UHI2m or 2.8 K higher UHIs during HWs than during normal days. These synergistic effects, however, diminish in future warmer climates. In contrast, the daytime synergistic effects for cities in dry regions are insignificant in the current climate, but emerge in future climates. At night, the synergistic effects are similar across climate regions in the current climate, and are stronger in future climate scenarios. We use a biophysical factorization method to disentangle the mechanisms behind the interactions between UHI and HWs that explain the spatial-temporal patterns of the interactions. Results show that the difference in the increase of urban versus rural evaporation and enhanced anthropogenic heat emissions (air conditioning energy use) during HWs are key contributors to the synergistic effects during daytime. The contrast in water availability between urban and rural land plays an important role in determining the contribution of evaporation. At night, the enhanced release of stored and anthropogenic heat during HWs are the primary contributors to the synergistic effects.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1485083
Journal Information:
Environmental Research Letters, Vol. 13, Issue 3; ISSN 1748-9326
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 196 works
Citation information provided by
Web of Science

References (54)

The Potential Impacts of Climate Variability and Change on Temperature-Related Morbidity and Mortality in the United States journal May 2001
Relative efficiency of land surface energy balance components: EFFICIENCY OF ENERGY BALANCE COMPONENTS journal April 2012
Heat Stress as it Affects Animal Production journal January 1981
Modeling global residential sector energy demand for heating and air conditioning in the context of climate change journal February 2009
Who is Sensitive to Extremes of Temperature?: A Case-Only Analysis journal January 2005
Influence of Subfacet Heterogeneity and Material Properties on the Urban Surface Energy Budget journal September 2014
Urban heat island diagnosis using ASTER satellite images and ‘in situ’ air temperature journal October 2009
High-resolution simulation of heatwave events in New York City journal December 2015
Interactions between urbanization, heat stress, and climate change journal September 2013
Impact of regional climate change on human health journal November 2005
A wedge strategy for mitigation of urban warming in future climate scenarios journal January 2017
Historic and future increase in the global land area affected by monthly heat extremes journal August 2013
Changes in Wind Speed under Heat Waves Enhance Urban Heat Islands in the Beijing Metropolitan Area journal November 2016
Consistent geographical patterns of changes in high-impact European heatwaves journal May 2010
Urban growth, climate change, and freshwater availability journal March 2011
Heat-Related Mortality and Adaptation to Heat in the United States journal August 2014
Robust spatially aggregated projections of climate extremes journal November 2013
Mortality in 13 French Cities During the August 2003 Heat Wave journal September 2004
Urban adaptation can roll back warming of emerging megapolitan regions journal February 2014
Simulation of surface urban heat islands under ?ideal? conditions at night part 2: Diagnosis of causation journal September 1991
Strong contributions of local background climate to urban heat islands journal July 2014
Contribution of changes in atmospheric circulation patterns to extreme temperature trends journal June 2015
Summer temperature variability and long-term survival among elderly people with chronic disease journal April 2012
Mortality in Chicago attributed to the July 1995 heat wave. journal September 1997
Historical Warnings of Future Food Insecurity with Unprecedented Seasonal Heat journal January 2009
Climate extremes indices in the CMIP5 multimodel ensemble: Part 2. Future climate projections: CMIP5 PROJECTIONS OF EXTREMES INDICES journal March 2013
The urban heat island and its impact on heat waves and human health in Shanghai journal September 2009
A Review of Recent Advances in Research on Extreme Heat Events journal August 2016
The Community Earth System Model: A Framework for Collaborative Research journal September 2013
Heat waves in the United States: definitions, patterns and trends journal December 2012
Civil conflicts are associated with the global climate journal August 2011
Satellite-derived urban heat islands from three coastal cities and the utilization of such data in urban climatology journal October 1989
Dynamics and Controls of the Near-Surface heat Island of Vancouver, British Columbia journal July 2000
Warming increases the risk of civil war in Africa journal November 2009
Climate Trends and Global Crop Production Since 1980 journal May 2011
More Intense, More Frequent, and Longer Lasting Heat Waves in the 21st Century journal August 2004
Land–atmosphere coupling and climate change in Europe journal September 2006
The Hot Summer of 2010: Redrawing the Temperature Record Map of Europe journal March 2011
Heatwaves and public health in Europe journal April 2006
A review on the scientific understanding of heatwaves—Their measurement, driving mechanisms, and changes at the global scale journal October 2015
On the Measurement of Heat Waves journal July 2013
Global changes in extreme events: regional and seasonal dimension journal July 2011
Two decades of urban climate research: a review of turbulence, exchanges of energy and water, and the urban heat island journal January 2003
Impact of the 2003 Heatwave on All-Cause Mortality in 9 French Cities journal January 2006
The Time Trend Temperature–Mortality as a Factor of Uncertainty Analysis of Impacts of Future Heat Waves: Wu et al. Respond journal May 2014
Heat Waves in the United States: Mortality Risk during Heat Waves and Effect Modification by Heat Wave Characteristics in 43 U.S. Communities journal February 2011
Projecting Future Heat-Related Mortality under Climate Change Scenarios: A Systematic Review journal December 2011
The energetic basic of the urban heat island journal January 1982
Heat Wave journal June 1980
The Paris Climate Agreement and future sea-level rise from Antarctica journal May 2021
HEAT WAVE: Looking at the World Through Infrared Glasses journal March 1992
Global changes in extreme events: Regional and seasonal dimension text January 2012
Heat Wave journal January 2005
The potential impacts of climate variability and change on temperature-related morbidity and mortality in the United States. journal May 2001

Cited By (11)

Correcting citizen‐science air temperature measurements across the Netherlands for short wave radiation bias journal July 2019
Modulation of the urban boundary‐layer heat budget by a heatwave journal April 2019
Increasing Heat Stress in Urban Areas of Eastern China: Acceleration by Urbanization journal December 2018
Amplified Urban Heat Islands during Heat Wave Periods journal July 2019
Urban Expansion and Drying Climate in an Urban Agglomeration of East China journal June 2019
Magnitude of urban heat islands largely explained by climate and population journal September 2019
Impact of Biophysical Mechanisms on Urban Heat Island Associated with Climate Variation and Urban Morphology journal December 2019
Paradoxical impact of sprawling intra-Urban Heat Islets: Reducing mean surface temperatures while enhancing local extremes journal December 2019
Heat Waves and Human Well-Being in Madrid (Spain) journal May 2019
Exploring the Synergies between Urban Overheating and Heatwaves (HWs) in Western Sydney journal January 2020
Cool Communities—Urban Density, Trees, and Health journal July 2018

Figures / Tables (7)


Similar Records

Simulation of Urban Climate with High-Resolution WRF Model: A Case Study in Nanjing, China
Journal Article · Sun Aug 05 00:00:00 EDT 2012 · Asia-Pacific Journal of Atmospheric Sciences, 48(3):227-241 · OSTI ID:1485083

A comprehensive analysis of the crop effect on the urban-rural differences in land surface phenology
Journal Article · Fri Dec 02 00:00:00 EST 2022 · Science of the Total Environment · OSTI ID:1485083

Divergent urbanization-induced impacts on global surface urban heat island trends since 1980s
Journal Article · Thu Jun 01 00:00:00 EDT 2023 · Remote Sensing of Environment · OSTI ID:1485083