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Article: Improved land cover and emission factors for modeling biogenic volatile organic compounds emissions from Hong Kong

TitleImproved land cover and emission factors for modeling biogenic volatile organic compounds emissions from Hong Kong
Authors
KeywordsBvoc Emission
Isoprene
Monoterpene
Other Vocs
Issue Date2010
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
Citation
Atmospheric Environment, 2010, v. 44 n. 11, p. 1456-1468 How to Cite?
AbstractThis paper describes a study of local biogenic volatile organic compounds (BVOC) emissions from the Hong Kong Special Administrative Region (HKSAR). An improved land cover and emission factor database was developed to estimate Hong Kong emissions using MEGAN, a BVOC emission model developed by Guenther et al. (2006). Field surveys of plant species composition and laboratory measurements of emission factors were combined with other data to improve existing land cover and emission factor data. The BVOC emissions from Hong Kong were calculated for 12 consecutive years from 1995 to 2006. For the year 2006, the total annual BVOC emissions were determined to be 12,400 metric tons or 9.82 × 109 g C (BVOC carbon). Isoprene emission accounts for 72%, monoterpene emissions account for 8%, and other VOCs emissions account for the remaining 20%. As expected, seasonal variation results in a higher emission in the summer and a lower emission in the winter, with emission predominantly in day time. A high emission of isoprene occurs for regions, such as Lowest Forest-NT North, dominated by broadleaf trees. The spatial variation of total BVOC is similar to the isoprene spatial variation due to its high contribution. The year to year variability in emissions due to weather was small over the twelve-year period (-1.4%, 2006 to 1995 trendline), but an increasing trend in the annual variation due to an increase in forest land cover can be observed (+7%, 2006 to 1995 trendline). The results of this study demonstrate the importance of accurate land cover inputs for biogenic emission models and indicate that land cover change should be considered for these models. © 2010 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/157058
ISSN
2015 Impact Factor: 3.459
2015 SCImago Journal Rankings: 1.999
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Research Grant Council
EPD of the HKSAR Government
U.S. National Science Foundation
HKU 714606
Funding Information:

The project is supported by the Hong Kong Research Grant Council (HKU 714606) and the EPD of the HKSAR Government. We would like to thank SDD, AFCD, and LCSD for providing various data for this project, Miss Jeanie Tsui for conducting the experiment and Dr. Paul Tam for conducting the field surveys. The National Center for Atmospheric Research is sponsored by the U.S. National Science Foundation.

References

 

DC FieldValueLanguage
dc.contributor.authorLeung, DYCen_US
dc.contributor.authorWong, Pen_US
dc.contributor.authorCheung, BKHen_US
dc.contributor.authorGuenther, Aen_US
dc.date.accessioned2012-08-08T08:45:09Z-
dc.date.available2012-08-08T08:45:09Z-
dc.date.issued2010en_US
dc.identifier.citationAtmospheric Environment, 2010, v. 44 n. 11, p. 1456-1468en_US
dc.identifier.issn1352-2310en_US
dc.identifier.urihttp://hdl.handle.net/10722/157058-
dc.description.abstractThis paper describes a study of local biogenic volatile organic compounds (BVOC) emissions from the Hong Kong Special Administrative Region (HKSAR). An improved land cover and emission factor database was developed to estimate Hong Kong emissions using MEGAN, a BVOC emission model developed by Guenther et al. (2006). Field surveys of plant species composition and laboratory measurements of emission factors were combined with other data to improve existing land cover and emission factor data. The BVOC emissions from Hong Kong were calculated for 12 consecutive years from 1995 to 2006. For the year 2006, the total annual BVOC emissions were determined to be 12,400 metric tons or 9.82 × 109 g C (BVOC carbon). Isoprene emission accounts for 72%, monoterpene emissions account for 8%, and other VOCs emissions account for the remaining 20%. As expected, seasonal variation results in a higher emission in the summer and a lower emission in the winter, with emission predominantly in day time. A high emission of isoprene occurs for regions, such as Lowest Forest-NT North, dominated by broadleaf trees. The spatial variation of total BVOC is similar to the isoprene spatial variation due to its high contribution. The year to year variability in emissions due to weather was small over the twelve-year period (-1.4%, 2006 to 1995 trendline), but an increasing trend in the annual variation due to an increase in forest land cover can be observed (+7%, 2006 to 1995 trendline). The results of this study demonstrate the importance of accurate land cover inputs for biogenic emission models and indicate that land cover change should be considered for these models. © 2010 Elsevier Ltd.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenven_US
dc.relation.ispartofAtmospheric Environmenten_US
dc.subjectBvoc Emissionen_US
dc.subjectIsopreneen_US
dc.subjectMonoterpeneen_US
dc.subjectOther Vocsen_US
dc.titleImproved land cover and emission factors for modeling biogenic volatile organic compounds emissions from Hong Kongen_US
dc.typeArticleen_US
dc.identifier.emailLeung, DYC:ycleung@hku.hken_US
dc.identifier.authorityLeung, DYC=rp00149en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.atmosenv.2010.01.012en_US
dc.identifier.scopuseid_2-s2.0-77649342103en_US
dc.identifier.hkuros171122-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77649342103&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume44en_US
dc.identifier.issue11en_US
dc.identifier.spage1456en_US
dc.identifier.epage1468en_US
dc.identifier.eissn1873-2844-
dc.identifier.isiWOS:000276736600010-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLeung, DYC=7203002484en_US
dc.identifier.scopusauthoridWong, P=35779341100en_US
dc.identifier.scopusauthoridCheung, BKH=24450033800en_US
dc.identifier.scopusauthoridGuenther, A=7102062952en_US
dc.identifier.citeulike6709531-

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