Spatio-temporal variation of the urban heat island in Santiago, Chile during summers 2005–2017

Montaner-Fernández, D; Morales-Salinas, L; Rodriguez, JS; Cárdenas-Jirón, L; Huete, A; Fuentes-Jaque, G; Pérez-Martínez, W; Cabezas, J

Spatio-temporal variation of the urban heat island in Santiago, Chile during summers 2005–2017

Montaner-Fernández, D Morales-Salinas, L Rodriguez, JS Cárdenas-Jirón, L Huete, A

Fuentes-Jaque, G Pérez-Martínez, W Cabezas, J

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Publisher:: MDPI
Publication Type:: Journal Article
Citation:: Remote Sensing, 2020, 12, (20)
Issue Date:: 2020-10-02

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Field	Value	Language
dc.contributor.author	Montaner-Fernández, D
dc.contributor.author	Morales-Salinas, L
dc.contributor.author	Rodriguez, JS
dc.contributor.author	Cárdenas-Jirón, L
dc.contributor.author	Huete, A https://orcid.org/0000-0003-2809-2376
dc.contributor.author	Fuentes-Jaque, G
dc.contributor.author	Pérez-Martínez, W
dc.contributor.author	Cabezas, J
dc.date.accessioned	2021-01-15T04:31:13Z
dc.date.available	2021-01-15T04:31:13Z
dc.date.issued	2020-10-02
dc.identifier.citation	Remote Sensing, 2020, 12, (20)
dc.identifier.issn	2072-4292
dc.identifier.issn	2072-4292
dc.identifier.uri	http://hdl.handle.net/10453/145446
dc.description.abstract	© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Urban heat islands (UHIs) can present significant risks to human health. Santiago, Chile has around 7 million residents, concentrated in an average density of 480 people/km2. During the last few summer seasons, the highest extreme maximum temperatures in over 100 years have been recorded. Given the projections in temperature increase for this metropolitan region over the next 50 years, the Santiago UHI could have an important impact on the health and stress of the general population. We studied the presence and spatial variability of UHIs in Santiago during the summer seasons from 2005 to 2017 using Moderate Resolution Imaging Spectroradiometer (MODIS) satellite imagery and data from nine meteorological stations. Simple regression models, geographic weighted regression (GWR) models and geostatistical interpolations were used to find nocturnal thermal differences in UHIs of up to 9◦ C, as well as increases in the magnitude and extension of the daytime heat island from summer 2014 to 2017. Understanding the behavior of the UHI of Santiago, Chile, is important for urban planners and local decision makers. Additionally, understanding the spatial pattern of the UHI could improve knowledge about how urban areas experience and could mitigate climate change.
dc.language	English
dc.publisher	MDPI
dc.relation.ispartof	Remote Sensing
dc.relation.isbasedon	10.3390/rs12203345
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0203 Classical Physics, 0406 Physical Geography and Environmental Geoscience, 0909 Geomatic Engineering
dc.title	Spatio-temporal variation of the urban heat island in Santiago, Chile during summers 2005–2017
dc.type	Journal Article
utslib.citation.volume	12
utslib.for	0203 Classical Physics
utslib.for	0406 Physical Geography and Environmental Geoscience
utslib.for	0909 Geomatic Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - CAMGIS - Centre for Advanced Modelling and Geospatial lnformation Systems
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2021-01-15T04:30:59Z
pubs.issue	20
pubs.publication-status	Published
pubs.volume	12
utslib.citation.issue	20

Abstract:

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Urban heat islands (UHIs) can present significant risks to human health. Santiago, Chile has around 7 million residents, concentrated in an average density of 480 people/km2. During the last few summer seasons, the highest extreme maximum temperatures in over 100 years have been recorded. Given the projections in temperature increase for this metropolitan region over the next 50 years, the Santiago UHI could have an important impact on the health and stress of the general population. We studied the presence and spatial variability of UHIs in Santiago during the summer seasons from 2005 to 2017 using Moderate Resolution Imaging Spectroradiometer (MODIS) satellite imagery and data from nine meteorological stations. Simple regression models, geographic weighted regression (GWR) models and geostatistical interpolations were used to find nocturnal thermal differences in UHIs of up to 9◦ C, as well as increases in the magnitude and extension of the daytime heat island from summer 2014 to 2017. Understanding the behavior of the UHI of Santiago, Chile, is important for urban planners and local decision makers. Additionally, understanding the spatial pattern of the UHI could improve knowledge about how urban areas experience and could mitigate climate change.

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http://hdl.handle.net/10453/145446