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Heatwaves and summer urban heat islands: a daily cycle approach to unveil the urban thermal signal changes in Lisbon, Portugal

2021Artigo científico Acesso aberto
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dc.contributor.authorOliveira, Ana
dc.contributor.authorLopes, António
dc.contributor.authorCorreia, Ezequiel
dc.contributor.authorNiza, Samuel
dc.contributor.authorSoares, Amílcar
dc.date.accessioned2021-02-25T16:32:07Z
dc.date.available2021-02-25T16:32:07Z
dc.date.issued2021
dc.description.abstractLisbon is a European Mediterranean city, greatly exposed to heatwaves (HW), according to recent trends and climate change prospects. Considering the Atlantic influence, air temperature observations from Lisbon’s mesoscale network are used to investigate the interactions between background weather and the urban thermal signal (UTS) in summer. Days are classified according to the prevailing regional wind direction, and hourly UTS is compared between HW and non‐HW conditions. Northern‐wind days predominate, revealing greater maximum air temperatures (up to 40 °C) and greater thermal amplitudes (approximately 10 °C), and account for 37 out of 49 HW days; southern‐wind days have milder temperatures, and no HWs occur. Results show that the wind direction groups are significantly different. While southern‐wind days have minor UTS variations, northern‐wind days have a consistent UTS daily cycle: a diurnal urban cooling island (UCI) (often lower than –1.0 °C), a late afternoon peak urban heat island (UHI) (occasionally surpassing 4.0 °C), and a stable nocturnal UHI (1.5 °C median intensity). UHI/UCI intensities are not significantly different between HW and non‐HW conditions, although the synoptic influence is noted. Results indicate that, in Lisbon, the UHI intensity does not increase during HW events, although it is significantly affected by wind. As such, local climate change adaptation strategies must be based on scenarios that account for the synergies between potential changes in regional air temperature and wind.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationOliveira, A., Lopes, A., Correia, E., Niza, S., & Soares, A. (2021). Heatwaves and summer urban heat islands: a daily cycle approach to unveil the urban thermal signal changes in Lisbon, Portugal. Atmosphere, 12(3), 292. https://doi.org/10.3390/atmos12030292pt_PT
dc.identifier.doi10.3390/atmos12030292pt_PT
dc.identifier.eissn2073-4433
dc.identifier.urihttp://hdl.handle.net/10451/46523
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationPh.D. Grant NO. PD/BD/52304/2013pt_PT
dc.relationCentre of Geographical Studies
dc.relationCentre of Geographical Studies
dc.relation.publisherversionhttps://www.mdpi.com/2073-4433/12/3/292pt_PT
dc.subjectUrban heat islandpt_PT
dc.subjectUrban climatept_PT
dc.subjectHeatwavespt_PT
dc.subjectLocal climate adaptationpt_PT
dc.subjectMediterranean citiespt_PT
dc.subjectLisbonpt_PT
dc.subjectUrban thermal signalpt_PT
dc.titleHeatwaves and summer urban heat islands: a daily cycle approach to unveil the urban thermal signal changes in Lisbon, Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre of Geographical Studies
oaire.awardTitleCentre of Geographical Studies
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00295%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00295%2F2020/PT
oaire.citation.issue3pt_PT
oaire.citation.startPage292pt_PT
oaire.citation.titleAtmospherept_PT
oaire.citation.volume12pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameLopes
person.familyNameCorreia
person.givenNameAntónio
person.givenNameEzequiel
person.identifier216928
person.identifier1154615
person.identifier.ciencia-id1D15-FB93-4687
person.identifier.ciencia-id2D17-9E04-D652
person.identifier.orcid0000-0002-9357-7639
person.identifier.orcid0000-0002-4026-7020
person.identifier.ridF-3217-2010
person.identifier.ridD-2959-2017
person.identifier.scopus-author-id55951850000
person.identifier.scopus-author-id7003418813
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationa1f5d857-c169-4a67-82c4-43063657c818
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