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Role of City Texture in Urban Heat Islands at Nighttime

TitleRole of City Texture in Urban Heat Islands at Nighttime
Publication TypeJournal Article
Year of Publication2018
AuthorsSobstyl JM, Emig T, Qomi M.JAbdolho, Ulm F-J, Pellenq RJean-Marc
JournalPhysical Review Letters
Volume120
Issue10
PaginationArticle Number: 108701
Date PublishedMar-09-2018
ISSN0031-9007
KeywordsIDEAL CONDITIONS; CLIMATE-CHANGE; CITIES; SIMULATION; GEOMETRY; ENERGY; HEALTH; IMPACT; MODEL
Abstract

An urban heat island (UHI) is a climate phenomenon that results in an increased air temperature in cities when compared to their rural surroundings. In this Letter, the dependence of an UHI on urban geometry is studied. Multiyear urban-rural temperature differences and building footprints data combined with a heat radiation scaling model are used to demonstrate for more than 50 cities worldwide that city texture-measured by a building distribution function and the sky view factor-explains city-to-city variations in nocturnal UHIs. Our results show a strong correlation between nocturnal UHIs and the city texture.

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URLhttps://link.aps.org/doi/10.1103/PhysRevLett.120.108701
DOI10.1103/PhysRevLett.120.108701
Short TitlePhys. Rev. Lett.
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