Spatiotemporal variation in urban overheating magnitude and its association with synoptic air-masses in a coastal city

Abstract Urban overheating (UO) may interact with synoptic-scale weather conditions. The association between meteorological parameters and UO has already been a subject of considerable research, however, the impact of synoptic-scale weather conditions on UO magnitude, particularly in a coastal city...

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Autores principales:	Hassan Saeed Khan, Mat Santamouris, Pavlos Kassomenos, Riccardo Paolini, Peter Caccetta, Ilias Petrou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3b2a48da53d446fbbe5746a393cbf87e
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spelling	oai:doaj.org-article:3b2a48da53d446fbbe5746a393cbf87e2021-12-02T17:04:05ZSpatiotemporal variation in urban overheating magnitude and its association with synoptic air-masses in a coastal city10.1038/s41598-021-86089-22045-2322https://doaj.org/article/3b2a48da53d446fbbe5746a393cbf87e2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86089-2https://doaj.org/toc/2045-2322Abstract Urban overheating (UO) may interact with synoptic-scale weather conditions. The association between meteorological parameters and UO has already been a subject of considerable research, however, the impact of synoptic-scale weather conditions on UO magnitude, particularly in a coastal city that is also near the desert landmass (Sydney) has never been investigated before. The present research examines the influence of synoptic-scale weather conditions on UO magnitude in Sydney by utilizing the newly developed gridded weather typing classification (GWTC). The diurnal, and seasonal variations in suburban-urban temperature contrast (ΔT) in association with synoptic-scale weather conditions, and ΔT response to synoptic air-masses during extreme heat events are investigated in three zones of Sydney. Generally, an exacerbation in UO magnitude was reported at daytime over the years, whereas the nocturnal UO magnitude was alleviated over time. The humid warm (HW), and warm (W) air-masses were found primarily responsible for exacerbated daytime UO during extreme heat events and in all other seasons, raising the mean daily maximum ΔT to 8–10.5 °C in Western Sydney, and 5–6.5 °C in inner Sydney. The dry warm (DW), and W conditions were mainly responsible for urban cooling (UC) at nighttime, bringing down the mean daily minimum ΔT to − 7.5 to − 10 °C in Western Sydney, and − 6 to − 7.5 °C in inner Sydney. The appropriate mitigation technologies can be planned based on this study to alleviate the higher daytime temperatures in the Sydney suburbs.Hassan Saeed KhanMat SantamourisPavlos KassomenosRiccardo PaoliniPeter CaccettaIlias PetrouNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hassan Saeed Khan Mat Santamouris Pavlos Kassomenos Riccardo Paolini Peter Caccetta Ilias Petrou Spatiotemporal variation in urban overheating magnitude and its association with synoptic air-masses in a coastal city
description	Abstract Urban overheating (UO) may interact with synoptic-scale weather conditions. The association between meteorological parameters and UO has already been a subject of considerable research, however, the impact of synoptic-scale weather conditions on UO magnitude, particularly in a coastal city that is also near the desert landmass (Sydney) has never been investigated before. The present research examines the influence of synoptic-scale weather conditions on UO magnitude in Sydney by utilizing the newly developed gridded weather typing classification (GWTC). The diurnal, and seasonal variations in suburban-urban temperature contrast (ΔT) in association with synoptic-scale weather conditions, and ΔT response to synoptic air-masses during extreme heat events are investigated in three zones of Sydney. Generally, an exacerbation in UO magnitude was reported at daytime over the years, whereas the nocturnal UO magnitude was alleviated over time. The humid warm (HW), and warm (W) air-masses were found primarily responsible for exacerbated daytime UO during extreme heat events and in all other seasons, raising the mean daily maximum ΔT to 8–10.5 °C in Western Sydney, and 5–6.5 °C in inner Sydney. The dry warm (DW), and W conditions were mainly responsible for urban cooling (UC) at nighttime, bringing down the mean daily minimum ΔT to − 7.5 to − 10 °C in Western Sydney, and − 6 to − 7.5 °C in inner Sydney. The appropriate mitigation technologies can be planned based on this study to alleviate the higher daytime temperatures in the Sydney suburbs.
format	article
author	Hassan Saeed Khan Mat Santamouris Pavlos Kassomenos Riccardo Paolini Peter Caccetta Ilias Petrou
author_facet	Hassan Saeed Khan Mat Santamouris Pavlos Kassomenos Riccardo Paolini Peter Caccetta Ilias Petrou
author_sort	Hassan Saeed Khan
title	Spatiotemporal variation in urban overheating magnitude and its association with synoptic air-masses in a coastal city
title_short	Spatiotemporal variation in urban overheating magnitude and its association with synoptic air-masses in a coastal city
title_full	Spatiotemporal variation in urban overheating magnitude and its association with synoptic air-masses in a coastal city
title_fullStr	Spatiotemporal variation in urban overheating magnitude and its association with synoptic air-masses in a coastal city
title_full_unstemmed	Spatiotemporal variation in urban overheating magnitude and its association with synoptic air-masses in a coastal city
title_sort	spatiotemporal variation in urban overheating magnitude and its association with synoptic air-masses in a coastal city
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3b2a48da53d446fbbe5746a393cbf87e
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Spatiotemporal variation in urban overheating magnitude and its association with synoptic air-masses in a coastal city

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