The role of city size and urban form in the surface urban heat island

Abstract Urban climate is determined by a variety of factors, whose knowledge can help to attenuate heat stress in the context of ongoing urbanization and climate change. We study the influence of city size and urban form on the Urban Heat Island (UHI) phenomenon in Europe and find a complex interpl...

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Autores principales:	Bin Zhou, Diego Rybski, Jürgen P. Kropp
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/40ff296397b5449481c098527fefdac1
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id	oai:doaj.org-article:40ff296397b5449481c098527fefdac1
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spelling	oai:doaj.org-article:40ff296397b5449481c098527fefdac12021-12-02T11:52:40ZThe role of city size and urban form in the surface urban heat island10.1038/s41598-017-04242-22045-2322https://doaj.org/article/40ff296397b5449481c098527fefdac12017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04242-2https://doaj.org/toc/2045-2322Abstract Urban climate is determined by a variety of factors, whose knowledge can help to attenuate heat stress in the context of ongoing urbanization and climate change. We study the influence of city size and urban form on the Urban Heat Island (UHI) phenomenon in Europe and find a complex interplay between UHI intensity and city size, fractality, and anisometry. Due to correlations among these urban factors, interactions in the multi-linear regression need to be taken into account. We find that among the largest 5,000 cities, the UHI intensity increases with the logarithm of the city size and with the fractal dimension, but decreases with the logarithm of the anisometry. Typically, the size has the strongest influence, followed by the compactness, and the smallest is the influence of the degree to which the cities stretch. Accordingly, from the point of view of UHI alleviation, small, disperse, and stretched cities are preferable. However, such recommendations need to be balanced against e.g. positive agglomeration effects of large cities. Therefore, trade-offs must be made regarding local and global aims.Bin ZhouDiego RybskiJürgen P. KroppNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bin Zhou Diego Rybski Jürgen P. Kropp The role of city size and urban form in the surface urban heat island
description	Abstract Urban climate is determined by a variety of factors, whose knowledge can help to attenuate heat stress in the context of ongoing urbanization and climate change. We study the influence of city size and urban form on the Urban Heat Island (UHI) phenomenon in Europe and find a complex interplay between UHI intensity and city size, fractality, and anisometry. Due to correlations among these urban factors, interactions in the multi-linear regression need to be taken into account. We find that among the largest 5,000 cities, the UHI intensity increases with the logarithm of the city size and with the fractal dimension, but decreases with the logarithm of the anisometry. Typically, the size has the strongest influence, followed by the compactness, and the smallest is the influence of the degree to which the cities stretch. Accordingly, from the point of view of UHI alleviation, small, disperse, and stretched cities are preferable. However, such recommendations need to be balanced against e.g. positive agglomeration effects of large cities. Therefore, trade-offs must be made regarding local and global aims.
format	article
author	Bin Zhou Diego Rybski Jürgen P. Kropp
author_facet	Bin Zhou Diego Rybski Jürgen P. Kropp
author_sort	Bin Zhou
title	The role of city size and urban form in the surface urban heat island
title_short	The role of city size and urban form in the surface urban heat island
title_full	The role of city size and urban form in the surface urban heat island
title_fullStr	The role of city size and urban form in the surface urban heat island
title_full_unstemmed	The role of city size and urban form in the surface urban heat island
title_sort	role of city size and urban form in the surface urban heat island
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/40ff296397b5449481c098527fefdac1
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The role of city size and urban form in the surface urban heat island

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