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dc.contributor.authorGabric, AJ
dc.contributor.authorQu, B
dc.contributor.authorMatrai, P
dc.contributor.authorHirst, AC
dc.date.accessioned2018-01-11T03:04:28Z
dc.date.available2018-01-11T03:04:28Z
dc.date.issued2005
dc.date.modified2009-08-27T06:52:53Z
dc.identifier.issn1600-0889
dc.identifier.doi10.1111/j.1600-0889.2005.00163.x
dc.identifier.urihttp://hdl.handle.net/10072/4349
dc.description.abstractSulfate aerosols (of both biogenic and anthropogenic origin) play a key role in the Earth's radiation balance both directly through scattering and absorption of solar and terrestrial radiation, and indirectly by modifying cloud microphysical properties. However, the uncertainties associated with radiative forcing of climate due to aerosols substantially exceed those associated with the greenhouse gases. The major source of sulfate aerosols in the remote marine atmosphere is the biogenic compound dimethylsulfide (DMS), which is ubiquitous in the world's oceans and is synthesized by plankton. Climate models point to significant future changes in sea-ice cover in the Arctic Ocean due to warming. This will have consequences for primary production and the sea-to-air flux of a number of biogenic compounds, including DMS. In this paper we discuss the impact of warming on the future production of DMS in the Arctic Ocean. A DMS production model has been calibrated to current climate conditions with satellite ocean colour data (SeaWiFS) using a genetic algorithm, an efficient non-derivative based optimization technique. We use the CSIRO Mk 2 climate model to force the DMS model under enhanced greenhouse climate conditions. We discuss the simulated change in DMS flux and its consequences for future aerosol production and the radiative budget of the Arctic. Significant decreases in sea-ice cover (by 18.5% annually and 61% in summer-autumn), increases in mean annual sea surface temperature of 1ì and a decrease of mixed layer depth by 13% annually are predicted to result in annual DMS flux increases of over 80% by the time of equivalent CO2 tripling (2080). Estimates of the impact of this increase in DMS emissions suggest significant changes to summer aerosol concentrations and the radiative balance in the Arctic region.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoen_AU
dc.publisherBlackwell Munksgaard
dc.publisher.placeCopenhagen, Denmark
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom391
dc.relation.ispartofpageto403
dc.relation.ispartofjournalTellus. Series B, Chemical and physical meteorology
dc.relation.ispartofvolume57
dc.rights.retentionY
dc.subject.fieldofresearchAtmospheric Sciences
dc.subject.fieldofresearchEnvironmental Science and Management
dc.subject.fieldofresearchcode0401
dc.subject.fieldofresearchcode0502
dc.titleThe simulated response of dimethylsulphide production in the Arctic Ocean to global warming
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dc.description.versionPublished
gro.facultyGriffith Sciences, Griffith School of Environment
gro.rights.copyright© 2005 Blackwell Publishing. The definitive version is available at [www.blackwell-synergy.com.]
gro.date.issued2005
gro.hasfulltextFull Text
gro.griffith.authorGabric, Albert J.
gro.griffith.authorQu, Bo


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