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Article: An investigation of urban heat island intensity (UHII) as an indicator of urban heating

TitleAn investigation of urban heat island intensity (UHII) as an indicator of urban heating
Authors
KeywordsHeating Cycle
Higher Urban Heat
Urban Heat Island
Urban/Rural Area Structures
Issue Date2009
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/atmosres
Citation
Atmospheric Research, 2009, v. 94 n. 3, p. 491-500 How to Cite?
AbstractThe objective of this paper is to evaluate the reliability of urban heat island intensity (UHII) as an indicator of urban heating. The diurnal patterns of air and surface-temperature based UHII and variations in urban and rural area heating were analyzed and discussed. The detailed air-temperature based UHII patterns were determined in one urban and four suburban areas of Hong Kong. UHII was determined as spatially-averaged air-temperature difference between an urban/suburban area and its surrounding rural area. Additionally, reported air and surface-temperature based UHII patterns were integrated in the discussion to carry out a comprehensive analysis. The urban and rural area heating variations (i.e., the diurnal variations in net radiation, sensible heat flux, latent heat flux, and heat stored by an area) were examined in the light of UHII patterns to validate UHII as an indicator for urban heating. It is noted that the air-temperature based UHIIs were higher and positive in the night-time but lower and negative during the daytime. On the other hand, most of the surface-temperature based UHIIs, investigated through satellite data were positive during both the daytime and night-time. It is revealed that UHII can well reflect urban heating during night-time and early morning. However, the lower and negative UHII during solar peak time (daytime when solar radiation is the dominant source of heating) has seemingly not been representing urban heating. © 2009 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/157027
ISSN
2015 Impact Factor: 3.377
2015 SCImago Journal Rankings: 1.556
ISI Accession Number ID
Funding AgencyGrant Number
University Research Committee of the University of Hong KongCRCG 1104
Funding Information:

This project is supported by a grant from the University Research Committee of the University of Hong Kong (No. CRCG 1104).

References

 

DC FieldValueLanguage
dc.contributor.authorMemon, RAen_US
dc.contributor.authorLeung, DYCen_US
dc.contributor.authorLiu, CHen_US
dc.date.accessioned2012-08-08T08:45:00Z-
dc.date.available2012-08-08T08:45:00Z-
dc.date.issued2009en_US
dc.identifier.citationAtmospheric Research, 2009, v. 94 n. 3, p. 491-500en_US
dc.identifier.issn0169-8095en_US
dc.identifier.urihttp://hdl.handle.net/10722/157027-
dc.description.abstractThe objective of this paper is to evaluate the reliability of urban heat island intensity (UHII) as an indicator of urban heating. The diurnal patterns of air and surface-temperature based UHII and variations in urban and rural area heating were analyzed and discussed. The detailed air-temperature based UHII patterns were determined in one urban and four suburban areas of Hong Kong. UHII was determined as spatially-averaged air-temperature difference between an urban/suburban area and its surrounding rural area. Additionally, reported air and surface-temperature based UHII patterns were integrated in the discussion to carry out a comprehensive analysis. The urban and rural area heating variations (i.e., the diurnal variations in net radiation, sensible heat flux, latent heat flux, and heat stored by an area) were examined in the light of UHII patterns to validate UHII as an indicator for urban heating. It is noted that the air-temperature based UHIIs were higher and positive in the night-time but lower and negative during the daytime. On the other hand, most of the surface-temperature based UHIIs, investigated through satellite data were positive during both the daytime and night-time. It is revealed that UHII can well reflect urban heating during night-time and early morning. However, the lower and negative UHII during solar peak time (daytime when solar radiation is the dominant source of heating) has seemingly not been representing urban heating. © 2009 Elsevier B.V. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/atmosresen_US
dc.relation.ispartofAtmospheric Researchen_US
dc.subjectHeating Cycleen_US
dc.subjectHigher Urban Heaten_US
dc.subjectUrban Heat Islanden_US
dc.subjectUrban/Rural Area Structuresen_US
dc.titleAn investigation of urban heat island intensity (UHII) as an indicator of urban heatingen_US
dc.typeArticleen_US
dc.identifier.emailLeung, DYC:ycleung@hku.hken_US
dc.identifier.emailLiu, CH:chliu@hkucc.hku.hken_US
dc.identifier.authorityLeung, DYC=rp00149en_US
dc.identifier.authorityLiu, CH=rp00152en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.atmosres.2009.07.006en_US
dc.identifier.scopuseid_2-s2.0-70349289066en_US
dc.identifier.hkuros171172-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70349289066&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume94en_US
dc.identifier.issue3en_US
dc.identifier.spage491en_US
dc.identifier.epage500en_US
dc.identifier.isiWOS:000271336300012-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridMemon, RA=26656757300en_US
dc.identifier.scopusauthoridLeung, DYC=7203002484en_US
dc.identifier.scopusauthoridLiu, CH=36065161300en_US
dc.identifier.citeulike5396879-

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