Wind and greenery effects in attenuating heat stress: A case study

Castiglia Feitosa, R; Wilkinson, S; Oliveira, B; Hacon, S

Wind and greenery effects in attenuating heat stress: A case study

Castiglia Feitosa, R Wilkinson, S

Oliveira, B Hacon, S

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Journal of Cleaner Production, 2021, 291
Issue Date:: 2021-04-01

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Field	Value	Language
dc.contributor.author	Castiglia Feitosa, R
dc.contributor.author	Wilkinson, S https://orcid.org/0000-0001-9266-1858
dc.contributor.author	Oliveira, B
dc.contributor.author	Hacon, S
dc.date.accessioned	2021-09-20T23:48:57Z
dc.date.available	2021-09-20T23:48:57Z
dc.date.issued	2021-04-01
dc.identifier.citation	Journal of Cleaner Production, 2021, 291
dc.identifier.issn	0959-6526
dc.identifier.issn	1879-1786
dc.identifier.uri	http://hdl.handle.net/10453/150640
dc.description.abstract	This paper aims to assess the effects of urbanization on heat stress comparing two neighbourhoods in the tropical city of Rio de Janeiro, Brazil, that differ in terms of building density and vegetation cover. The outdoor heat stress was evaluated by the Wet Bulb-Globe Temperature (WBGT) Index, which considers the combined effect of air temperature, relative humidity, solar radiation and wind speed, during the year of 2016. The urban neighbourhood presented statistically (p < 0.01) higher WBGT levels (mean value 23.48 °C), than the suburban neighbourhood (mean value 22.0 °C). The results highlighted the effect of low wind velocities on heat stress in the urban environment over 75% of the time. Building spacing and street orientation considering the most frequent wind directions must be taken into account during the urban planning process. Otherwise stagnant air conditions in urban environments become a common feature that cannot be reverted. Under such circumstances, green areas such as pocket parks, green roofs and green walls should be implemented to mitigate heat stress. Public policies for many neighbourhoods in Brazilian cities are necessary to increase vegetated areas aiming to improve conditions of well-being.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Journal of Cleaner Production
dc.relation.isbasedon	10.1016/j.jclepro.2021.125919
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0907 Environmental Engineering, 0910 Manufacturing Engineering, 0915 Interdisciplinary Engineering
dc.subject.classification	Environmental Sciences
dc.title	Wind and greenery effects in attenuating heat stress: A case study
dc.type	Journal Article
utslib.citation.volume	291
utslib.for	0907 Environmental Engineering
utslib.for	0910 Manufacturing Engineering
utslib.for	0915 Interdisciplinary Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Design, Architecture and Building
pubs.organisational-group	/University of Technology Sydney/Faculty of Design, Architecture and Building/School of Built Environment
pubs.organisational-group	/University of Technology Sydney/Strength - CCDP - Contemporary Design Practice
pubs.organisational-group	/University of Technology Sydney/e-Press
utslib.copyright.status	open_access	*
dc.date.updated	2021-09-20T23:48:40Z
pubs.publication-status	Published
pubs.volume	291

Abstract:

This paper aims to assess the effects of urbanization on heat stress comparing two neighbourhoods in the tropical city of Rio de Janeiro, Brazil, that differ in terms of building density and vegetation cover. The outdoor heat stress was evaluated by the Wet Bulb-Globe Temperature (WBGT) Index, which considers the combined effect of air temperature, relative humidity, solar radiation and wind speed, during the year of 2016. The urban neighbourhood presented statistically (p < 0.01) higher WBGT levels (mean value 23.48 °C), than the suburban neighbourhood (mean value 22.0 °C). The results highlighted the effect of low wind velocities on heat stress in the urban environment over 75% of the time. Building spacing and street orientation considering the most frequent wind directions must be taken into account during the urban planning process. Otherwise stagnant air conditions in urban environments become a common feature that cannot be reverted. Under such circumstances, green areas such as pocket parks, green roofs and green walls should be implemented to mitigate heat stress. Public policies for many neighbourhoods in Brazilian cities are necessary to increase vegetated areas aiming to improve conditions of well-being.

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http://hdl.handle.net/10453/150640