Structural change to the persistence of the urban heat island

The term urban heat island (UHI) is used to describe the effect of urban temperatures rising several degrees above concurrent temperatures in surrounding suburban or rural areas. This is typically assessed through records of daily extreme temperatures. However, on a hot day the temperature can excee...

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Main Authors: Debbie J Dupuis, Luca Trapin
Format: Article
Language:English
Published: IOP Publishing 2020-01-01
Series:Environmental Research Letters
Subjects:
Online Access:https://doi.org/10.1088/1748-9326/abb158
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author Debbie J Dupuis
Luca Trapin
author_facet Debbie J Dupuis
Luca Trapin
author_sort Debbie J Dupuis
collection DOAJ
description The term urban heat island (UHI) is used to describe the effect of urban temperatures rising several degrees above concurrent temperatures in surrounding suburban or rural areas. This is typically assessed through records of daily extreme temperatures. However, on a hot day the temperature can exceed an extreme threshold for several consecutive hours, forming a cluster of extremes. We use the statistical theory of extreme values combined with a model that allows structural breaks to show that there has been a significant upward shift in the length of clusters in New York City. No such shift is found at a Connecticut location where the usual UHI assessment indicates that the two sites are comparable. Our study is the first to highlight this danger of the UHI. Prolonged exposure to extreme temperatures has deleterious effects on both health and the environment.
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spelling doaj.art-bd35bb7dad9049c1bbc4958e456181332023-08-09T14:55:45ZengIOP PublishingEnvironmental Research Letters1748-93262020-01-01151010407610.1088/1748-9326/abb158Structural change to the persistence of the urban heat islandDebbie J Dupuis0https://orcid.org/0000-0003-4277-4605Luca Trapin1Department of Decision Sciences, HEC Montréal, 3000, chemin de la Côte-Sainte-Catherine , Montréal (Québec) H3T 2A7, CanadaDepartment of Statistics, University of Bologna , Via delle Belle Arti, 41, 40126 Bologna, ItalyThe term urban heat island (UHI) is used to describe the effect of urban temperatures rising several degrees above concurrent temperatures in surrounding suburban or rural areas. This is typically assessed through records of daily extreme temperatures. However, on a hot day the temperature can exceed an extreme threshold for several consecutive hours, forming a cluster of extremes. We use the statistical theory of extreme values combined with a model that allows structural breaks to show that there has been a significant upward shift in the length of clusters in New York City. No such shift is found at a Connecticut location where the usual UHI assessment indicates that the two sites are comparable. Our study is the first to highlight this danger of the UHI. Prolonged exposure to extreme temperatures has deleterious effects on both health and the environment.https://doi.org/10.1088/1748-9326/abb158urbanizationextreme temperatureclustering
spellingShingle Debbie J Dupuis
Luca Trapin
Structural change to the persistence of the urban heat island
Environmental Research Letters
urbanization
extreme temperature
clustering
title Structural change to the persistence of the urban heat island
title_full Structural change to the persistence of the urban heat island
title_fullStr Structural change to the persistence of the urban heat island
title_full_unstemmed Structural change to the persistence of the urban heat island
title_short Structural change to the persistence of the urban heat island
title_sort structural change to the persistence of the urban heat island
topic urbanization
extreme temperature
clustering
url https://doi.org/10.1088/1748-9326/abb158
work_keys_str_mv AT debbiejdupuis structuralchangetothepersistenceoftheurbanheatisland
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