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dc.contributor.authorMackie, Doug S
dc.contributor.authorBoyd, Philip W
dc.contributor.authorMcTainsh, Grant H
dc.contributor.authorTindale, Neil W
dc.contributor.authorWestberry, Toby K
dc.contributor.authorHunter, Keith A
dc.date.accessioned2017-05-03T16:55:37Z
dc.date.available2017-05-03T16:55:37Z
dc.date.issued2008
dc.date.modified2012-02-10T02:19:21Z
dc.identifier.issn1525-2027
dc.identifier.doi10.1029/2007GC001813
dc.identifier.urihttp://hdl.handle.net/10072/23473
dc.description.abstractDust is an important vector for iron supply to the ocean, which subsequently impacts ocean productivity, atmospheric CO2 concentrations, and hence global climate. Here, we synthesize the processes influencing the biogeochemistry of Australian dust and compare them with those from other Southern Hemisphere dust sources. Our observations range from soil and dust physical properties to abrasion and cloud chamber chemistry experiments to dust storms and their dispersion and deposition. We then present satellite observations of the impact of episodic dust deposition events on the productivity of low-iron oceanic waters north (i.e., low-nitrate, low-chlorophyll (LNLC)) and south (i.e., high-nitrate, low-chlorophyll (HNLC)) of Australia. Dust deposition from the largest dust storm in over 40 years did not result in iron-mediated algal blooms in either oceanic region. A comparison of Australia with other Southern Hemisphere source regions reveals that the relatively well sampled Australian system is a poor generic model. Furthermore, there are marked distinctions between Southern and Northern Hemisphere iron/dust biogeochemistry that must be recognized by modelers and included in future simulations. Better information is required on the relative role of the atmosphere and ocean on influencing iron biogeochemistry and how their relative influences might change in the future due to climate change.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent1440868 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoeng
dc.publisherAmerican Geophysical Union
dc.publisher.placeUSA
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto24
dc.relation.ispartofissue3
dc.relation.ispartofjournalGeochemistry, Geophysics, Geosystems: G³
dc.relation.ispartofvolume9
dc.rights.retentionY
dc.subject.fieldofresearchPhysical sciences
dc.subject.fieldofresearchEarth sciences
dc.subject.fieldofresearchcode51
dc.subject.fieldofresearchcode37
dc.titleBiogeochemistry of iron in Australian dust: From eolian uplift to marine uptake
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2008 American Geophysical Union. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
gro.date.issued2008
gro.hasfulltextFull Text
gro.griffith.authorMcTainsh, Grant H.


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