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Surface radiation balance of urban materials and their impact on air temperature of an urban canyon in Lisbon, Portugal

2020Artigo científico Acesso aberto
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dc.contributor.authorMatias, Márcia
dc.contributor.authorLopes, António
dc.date.accessioned2020-12-21T11:22:19Z
dc.date.available2020-12-21T11:22:19Z
dc.date.issued2020
dc.description.abstractUrban climate results from the modifications caused by the characteristics of cities, which modifies the regional climatic conditions of a city. When urban areas are warmer than the surrounding areas, the urban heat island (UHI) phenomenon occurs. Being a major phenomenon and a global topic of interest for all affected cities, there are already numerous studies that address this subject. However, most studies are only focused on the macro and mesoscales. This study looks at the micrometeorological scale in a neighborhood of Lisbon (Telheiras). Having as a main objective to evaluate how the radiation balance of urban materials influences air temperature in an urban canyon, thermal images of different urban materials were obtained using infrared thermography, a technique that allowed understanding how the temperatures registered in the facades and other urban surfaces can affect the air temperature of the urban canyon. The components of the radiation budget were obtained by using a pyranometer and a pyrgeometer. Moreover, a microclimatic network to monitor air temperature and relative humidity was installed in the study area. The results show that, when the streets are less exposed to the prevailing wind direction in Lisbon (north and northwest), air temperatures are slightly higher than those found in opposite conditions. Both the temperature and the radiative balance of the facades and other surfaces (asphalt, light Portuguese sidewalk, and tile floor) respond directly to incident solar radiation. As expected, it was found that south facades have the highest temperatures of the four exposures under study (>4 ◦C when compared to the opposite facade), and the highest radiative balance was always registered on asphalt when compared to the sidewalk (at 9:00 a.m. + 30 W·m−2 , at 1:00 p.m. + 149 W·m−2 , and at 7:00 p.m. + 66 W·m−2 ).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMatias, M., & Lopes, A. (2020). Surface radiation balance of urban materials and their impact on air temperature of an urban canyon in Lisbon, Portugal. Applied Sciences, 10(6), 2193. https://doi.org/10.3390/app10062193pt_PT
dc.identifier.doi10.3390/app10062193pt_PT
dc.identifier.issn2076-3417
dc.identifier.urihttp://hdl.handle.net/10451/45468
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationCentre of Geographical Studies
dc.relation.publisherversionhttps://www.mdpi.com/2076-3417/10/6/2193pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectInfrared thermographypt_PT
dc.subjectRadiation balancept_PT
dc.subjectUHIpt_PT
dc.subjectUrban surfacespt_PT
dc.subjectUrban climate changept_PT
dc.titleSurface radiation balance of urban materials and their impact on air temperature of an urban canyon in Lisbon, Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberUIDB/00295/2020
oaire.awardTitleCentre of Geographical Studies
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00295%2F2020/PT
oaire.citation.issue6pt_PT
oaire.citation.startPage2193pt_PT
oaire.citation.titleApplied Sciencespt_PT
oaire.citation.volume10pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameNeves Matias
person.familyNameLopes
person.givenNameMárcia Alexandra
person.givenNameAntónio
person.identifier216928
person.identifier.ciencia-id2A19-53EA-EB66
person.identifier.ciencia-id1D15-FB93-4687
person.identifier.orcid0000-0003-3090-5559
person.identifier.orcid0000-0002-9357-7639
person.identifier.ridF-3217-2010
person.identifier.scopus-author-id55951850000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication5ec106ce-350f-4b1b-aed6-1acd9f11f7f1
relation.isAuthorOfPublication.latestForDiscoverydda16d7e-19e8-458f-b497-a55f8861aef3
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