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Article: The Street Air Warming Phenomenon in a High-Rise Compact City

TitleThe Street Air Warming Phenomenon in a High-Rise Compact City
Authors
Keywordsvehicle traverse experiments
street air temperature
air temperature model
street warming
Issue Date2018
PublisherMDPI AG. The Journal's web site is located at http://www.mdpi.com/journal/atmosphere
Citation
Atmosphere, 2018, v. 9 n. 10, p. article no. 402 How to Cite?
AbstractThe street thermal environment is important for thermal comfort, urban climate and pollutant dispersion. A 24-h vehicle traverse study was conducted over the Kowloon Peninsula of Hong Kong in summer, with each measurement period consisting of 2–3 full days. The data covered a total of 158 loops in 198 h along the route on sunny days. The measured data were averaged by three methods (direct average, FFT filter and interpolated by the piecewise cubic Hermite interpolation). The average street air temperatures were found to be 1–3 °C higher than those recorded at nearby fixed weather stations. The street warming phenomenon observed in the study has substantial implications as usually urban heat island (UHI) intensity is estimated from measurement at fixed weather stations, and therefore the UHI intensity in the built areas of the city may have been underestimated. This significant difference is of interest for studies on outdoor air temperature, thermal comfort, urban environment and pollutant dispersion. The differences were simulated by an improved one-dimensional temperature model (ZERO-CAT) using different urban morphology parameters. The model can correct the underestimation of street air temperature. Further sensitivity studies show that the building arrangement in the daytime and nighttime plays different roles for air temperature in the street. City designers can choose different parameters based on their purpose.
Persistent Identifierhttp://hdl.handle.net/10722/277981
ISSN
2023 Impact Factor: 2.5
2023 SCImago Journal Rankings: 0.627
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, X-
dc.contributor.authorLi, Y-
dc.contributor.authorYang, X-
dc.contributor.authorChan, PW-
dc.contributor.authorNichol, J-
dc.contributor.authorLi, Q-
dc.date.accessioned2019-10-04T08:05:07Z-
dc.date.available2019-10-04T08:05:07Z-
dc.date.issued2018-
dc.identifier.citationAtmosphere, 2018, v. 9 n. 10, p. article no. 402-
dc.identifier.issn2073-4433-
dc.identifier.urihttp://hdl.handle.net/10722/277981-
dc.description.abstractThe street thermal environment is important for thermal comfort, urban climate and pollutant dispersion. A 24-h vehicle traverse study was conducted over the Kowloon Peninsula of Hong Kong in summer, with each measurement period consisting of 2–3 full days. The data covered a total of 158 loops in 198 h along the route on sunny days. The measured data were averaged by three methods (direct average, FFT filter and interpolated by the piecewise cubic Hermite interpolation). The average street air temperatures were found to be 1–3 °C higher than those recorded at nearby fixed weather stations. The street warming phenomenon observed in the study has substantial implications as usually urban heat island (UHI) intensity is estimated from measurement at fixed weather stations, and therefore the UHI intensity in the built areas of the city may have been underestimated. This significant difference is of interest for studies on outdoor air temperature, thermal comfort, urban environment and pollutant dispersion. The differences were simulated by an improved one-dimensional temperature model (ZERO-CAT) using different urban morphology parameters. The model can correct the underestimation of street air temperature. Further sensitivity studies show that the building arrangement in the daytime and nighttime plays different roles for air temperature in the street. City designers can choose different parameters based on their purpose.-
dc.languageeng-
dc.publisherMDPI AG. The Journal's web site is located at http://www.mdpi.com/journal/atmosphere-
dc.relation.ispartofAtmosphere-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectvehicle traverse experiments-
dc.subjectstreet air temperature-
dc.subjectair temperature model-
dc.subjectstreet warming-
dc.titleThe Street Air Warming Phenomenon in a High-Rise Compact City-
dc.typeArticle-
dc.identifier.emailLi, Y: liyg@hku.hk-
dc.identifier.authorityLi, Y=rp00151-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.3390/atmos9100402-
dc.identifier.scopuseid_2-s2.0-85055330367-
dc.identifier.hkuros306604-
dc.identifier.volume9-
dc.identifier.issue10-
dc.identifier.spagearticle no. 402-
dc.identifier.epagearticle no. 402-
dc.identifier.isiWOS:000448543200037-
dc.publisher.placeSwitzerland-
dc.identifier.issnl2073-4433-

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