Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18470
DC FieldValueLanguage
dc.contributorDepartment of Land Surveying and Geo-Informatics-
dc.creatorWong, MS-
dc.creatorYang, J-
dc.creatorNichol, J-
dc.creatorWeng, Q-
dc.creatorMenenti, M-
dc.creatorChan, PW-
dc.date.accessioned2015-10-13T08:26:57Z-
dc.date.available2015-10-13T08:26:57Z-
dc.identifier.issn1545-598X-
dc.identifier.urihttp://hdl.handle.net/10397/18470-
dc.language.isoenen_US
dc.publisherInstitute of Electrical and Electronics Engineersen_US
dc.subjectEnergy balance modelen_US
dc.subjectHeat fluxen_US
dc.subjectMixed pixelen_US
dc.subjectSmall satelliteen_US
dc.subjectUrban areasen_US
dc.titleModeling of Anthropogenic Heat Flux Using HJ-1B Chinese Small Satellite Image: A Study of Heterogeneous Urbanized Areas in Hong Kongen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage1466-
dc.identifier.epage1470-
dc.identifier.volume12-
dc.identifier.issue7-
dc.identifier.doi10.1109/LGRS.2015.2409111-
dcterms.abstractAnthropogenic heat is the heat flux generated by human activities and is a major contributor to the formation of an urban heat island. In a city such as Hong Kong, obtaining pure pixels from medium- or coarse-resolution remote sensing images is challenging. Considering the completely different thermal properties of vegetation and impervious surfaces, this letter developed a novel algorithm to estimate anthropogenic heat fluxes by decomposing image pixels into fractions of impervious surfaces and vegetation, and by estimating the total heat flux for the mixed pixel. The Chinese small satellite HJ-1B images with a spatial resolution of 30 and 300 m for visible and thermal wavebands, respectively, and the temporal resolution of four days were used for the heat flux modeling. Results show that anthropogenic heat fluxes in Hong Kong are correlated to the building density and the building height, with r2 = 0.92 and 0.58 on October 11, 2012 and r2 = 0.94 and 0.62 on January 13, 2013, respectively. The average anthropogenic heat fluxes in urban areas are 289.16 and 283.17 W/m2 on October 11, 2012 and on January 13, 2013, respectively, and the commercial areas emit the largest anthropogenic heat fluxes around 500-600 W/m2 compared with other land-use types. The derived anthropogenic heat fluxes can help in planning and environmental authorities to pinpoint "hot-spot" areas, and they can be used for compliance monitoring.-
dcterms.bibliographicCitationIEEE geoscience and remote sensing letters, 2015, v. 12, no. 7, p. 1466-1470-
dcterms.isPartOfIEEE geoscience and remote sensing letters-
dcterms.issued2015-
dc.identifier.scopus2-s2.0-84933036667-
dc.identifier.rosgroupid2014001049-
dc.description.ros2014-2015 > Academic research: refereed > Publication in refereed journal-
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