Heterogeneity in individually experienced temperatures (IETs) within an urban neighborhood

insights from a new approach to measuring heat exposure

E. R. Kuras, David Hondula, J. Brown-Saracino

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Urban environmental health hazards, including exposure to extreme heat, have become increasingly important to understand in light of ongoing climate change and urbanization. In cities, neighborhoods are often considered a homogenous and appropriate unit with which to assess heat risk. This manuscript presents results from a pilot study examining the variability of individually experienced temperatures (IETs) within a single urban neighborhood. In July 2013, 23 research participants were recruited from the South End neighborhood of Boston and equipped with Thermochron iButtons that measured the air temperatures surrounding individuals as they went about their daily lives. IETs were measured during a heat wave period (July 17–20), which included 2 days with excessive heat warnings and 1 day with a heat advisory, as well as a reference period (July 20–23) in which temperatures were below seasonal averages. IETs were not homogeneous during the heat wave period; mean IETs were significantly different between participants (p < 0.001). The majority of participants recorded IETs significantly lower than outdoor ambient temperatures (OATs), and on average, the mean IET was 3.7 °C below the mean OAT. Compared with IETs during the reference period, IETs during the heat wave period were 1.0 °C higher. More than half of participants did not experience statistically different temperatures between the two test periods, despite the fact that the mean OAT was 6.5 °C higher during the heat wave period. The IET data collected for this sample and study period suggest that (1) heterogeneity in individual heat exposure exists within this neighborhood and that (2) outdoor temperatures misrepresent the mean experienced temperatures during a heat wave period. Individual differences in attributes (gender, race, socioeconomic status, etc.), behaviors (schedules, preferences, lifestyle, etc.), and access to resources are overlooked determinants of heat exposure and should be better integrated with group- and neighborhood-level characteristics. Understanding IETs for the population at large may lead to innovative advances in heat-health intervention and mitigation strategies.

Original languageEnglish (US)
Pages (from-to)1363-1372
Number of pages10
JournalInternational Journal of Biometeorology
Volume59
Issue number10
DOIs
StatePublished - Oct 26 2015

Fingerprint

Hot Temperature
Temperature
Infrared Rays
temperature
measuring
exposure
Extreme Heat
Urban Health
socioeconomic status
Urbanization
Environmental Health
Climate Change
lifestyle
Individuality
Social Class
urbanization
gender
mitigation
Life Style
air temperature

Keywords

  • Boston
  • Heat
  • Heterogeneity
  • Individually experienced temperatures
  • Neighborhood
  • Urban heat island

ASJC Scopus subject areas

  • Atmospheric Science
  • Ecology
  • Health, Toxicology and Mutagenesis
  • Medicine(all)

Cite this

Heterogeneity in individually experienced temperatures (IETs) within an urban neighborhood : insights from a new approach to measuring heat exposure. / Kuras, E. R.; Hondula, David; Brown-Saracino, J.

In: International Journal of Biometeorology, Vol. 59, No. 10, 26.10.2015, p. 1363-1372.

Research output: Contribution to journalArticle

@article{4d84a461b7e447448e2143076d8b54ce,
title = "Heterogeneity in individually experienced temperatures (IETs) within an urban neighborhood: insights from a new approach to measuring heat exposure",
abstract = "Urban environmental health hazards, including exposure to extreme heat, have become increasingly important to understand in light of ongoing climate change and urbanization. In cities, neighborhoods are often considered a homogenous and appropriate unit with which to assess heat risk. This manuscript presents results from a pilot study examining the variability of individually experienced temperatures (IETs) within a single urban neighborhood. In July 2013, 23 research participants were recruited from the South End neighborhood of Boston and equipped with Thermochron iButtons that measured the air temperatures surrounding individuals as they went about their daily lives. IETs were measured during a heat wave period (July 17–20), which included 2 days with excessive heat warnings and 1 day with a heat advisory, as well as a reference period (July 20–23) in which temperatures were below seasonal averages. IETs were not homogeneous during the heat wave period; mean IETs were significantly different between participants (p < 0.001). The majority of participants recorded IETs significantly lower than outdoor ambient temperatures (OATs), and on average, the mean IET was 3.7 °C below the mean OAT. Compared with IETs during the reference period, IETs during the heat wave period were 1.0 °C higher. More than half of participants did not experience statistically different temperatures between the two test periods, despite the fact that the mean OAT was 6.5 °C higher during the heat wave period. The IET data collected for this sample and study period suggest that (1) heterogeneity in individual heat exposure exists within this neighborhood and that (2) outdoor temperatures misrepresent the mean experienced temperatures during a heat wave period. Individual differences in attributes (gender, race, socioeconomic status, etc.), behaviors (schedules, preferences, lifestyle, etc.), and access to resources are overlooked determinants of heat exposure and should be better integrated with group- and neighborhood-level characteristics. Understanding IETs for the population at large may lead to innovative advances in heat-health intervention and mitigation strategies.",
keywords = "Boston, Heat, Heterogeneity, Individually experienced temperatures, Neighborhood, Urban heat island",
author = "Kuras, {E. R.} and David Hondula and J. Brown-Saracino",
year = "2015",
month = "10",
day = "26",
doi = "10.1007/s00484-014-0946-x",
language = "English (US)",
volume = "59",
pages = "1363--1372",
journal = "International Journal of Biometeorology",
issn = "0020-7128",
publisher = "Springer New York",
number = "10",

}

TY - JOUR

T1 - Heterogeneity in individually experienced temperatures (IETs) within an urban neighborhood

T2 - insights from a new approach to measuring heat exposure

AU - Kuras, E. R.

AU - Hondula, David

AU - Brown-Saracino, J.

PY - 2015/10/26

Y1 - 2015/10/26

N2 - Urban environmental health hazards, including exposure to extreme heat, have become increasingly important to understand in light of ongoing climate change and urbanization. In cities, neighborhoods are often considered a homogenous and appropriate unit with which to assess heat risk. This manuscript presents results from a pilot study examining the variability of individually experienced temperatures (IETs) within a single urban neighborhood. In July 2013, 23 research participants were recruited from the South End neighborhood of Boston and equipped with Thermochron iButtons that measured the air temperatures surrounding individuals as they went about their daily lives. IETs were measured during a heat wave period (July 17–20), which included 2 days with excessive heat warnings and 1 day with a heat advisory, as well as a reference period (July 20–23) in which temperatures were below seasonal averages. IETs were not homogeneous during the heat wave period; mean IETs were significantly different between participants (p < 0.001). The majority of participants recorded IETs significantly lower than outdoor ambient temperatures (OATs), and on average, the mean IET was 3.7 °C below the mean OAT. Compared with IETs during the reference period, IETs during the heat wave period were 1.0 °C higher. More than half of participants did not experience statistically different temperatures between the two test periods, despite the fact that the mean OAT was 6.5 °C higher during the heat wave period. The IET data collected for this sample and study period suggest that (1) heterogeneity in individual heat exposure exists within this neighborhood and that (2) outdoor temperatures misrepresent the mean experienced temperatures during a heat wave period. Individual differences in attributes (gender, race, socioeconomic status, etc.), behaviors (schedules, preferences, lifestyle, etc.), and access to resources are overlooked determinants of heat exposure and should be better integrated with group- and neighborhood-level characteristics. Understanding IETs for the population at large may lead to innovative advances in heat-health intervention and mitigation strategies.

AB - Urban environmental health hazards, including exposure to extreme heat, have become increasingly important to understand in light of ongoing climate change and urbanization. In cities, neighborhoods are often considered a homogenous and appropriate unit with which to assess heat risk. This manuscript presents results from a pilot study examining the variability of individually experienced temperatures (IETs) within a single urban neighborhood. In July 2013, 23 research participants were recruited from the South End neighborhood of Boston and equipped with Thermochron iButtons that measured the air temperatures surrounding individuals as they went about their daily lives. IETs were measured during a heat wave period (July 17–20), which included 2 days with excessive heat warnings and 1 day with a heat advisory, as well as a reference period (July 20–23) in which temperatures were below seasonal averages. IETs were not homogeneous during the heat wave period; mean IETs were significantly different between participants (p < 0.001). The majority of participants recorded IETs significantly lower than outdoor ambient temperatures (OATs), and on average, the mean IET was 3.7 °C below the mean OAT. Compared with IETs during the reference period, IETs during the heat wave period were 1.0 °C higher. More than half of participants did not experience statistically different temperatures between the two test periods, despite the fact that the mean OAT was 6.5 °C higher during the heat wave period. The IET data collected for this sample and study period suggest that (1) heterogeneity in individual heat exposure exists within this neighborhood and that (2) outdoor temperatures misrepresent the mean experienced temperatures during a heat wave period. Individual differences in attributes (gender, race, socioeconomic status, etc.), behaviors (schedules, preferences, lifestyle, etc.), and access to resources are overlooked determinants of heat exposure and should be better integrated with group- and neighborhood-level characteristics. Understanding IETs for the population at large may lead to innovative advances in heat-health intervention and mitigation strategies.

KW - Boston

KW - Heat

KW - Heterogeneity

KW - Individually experienced temperatures

KW - Neighborhood

KW - Urban heat island

UR - http://www.scopus.com/inward/record.url?scp=84942296787&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84942296787&partnerID=8YFLogxK

U2 - 10.1007/s00484-014-0946-x

DO - 10.1007/s00484-014-0946-x

M3 - Article

VL - 59

SP - 1363

EP - 1372

JO - International Journal of Biometeorology

JF - International Journal of Biometeorology

SN - 0020-7128

IS - 10

ER -