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On the proportion of ballast versus non-ballast associated carbon export in the surface ocean

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dc.contributor.author Le Moigne, Frederic A. C.
dc.contributor.author Sanders, Richard J.
dc.contributor.author Villa-Alfageme, Maria
dc.contributor.author Martin, Adrian P.
dc.contributor.author Pabortsava, Katsiaryna
dc.contributor.author Planquette, Helene
dc.contributor.author Morris, Paul J.
dc.contributor.author Thomalla, Sandy J.
dc.date.accessioned 2012-09-21T14:14:04Z
dc.date.available 2013-03-11T08:45:49Z
dc.date.issued 2012-08-11
dc.identifier.citation Geophysical Research Letters 39 (2012): L15610 en_US
dc.identifier.uri http://hdl.handle.net/1912/5376
dc.description Author Posting. © American Geophysical Union, 2012. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 39 (2012): L15610, doi:10.1029/2012GL052980. en_US
dc.description.abstract The role of biominerals in driving carbon export from the surface ocean is unclear. We compiled surface particulate organic carbon (POC), and mineral ballast export fluxes from 55 different locations in the Atlantic and Southern Oceans. Substantial surface POC export accompanied by negligible mineral export was recorded implying that association with mineral phases is not a precondition for organic export to occur. The proportion of non-mineral associated sinking POC ranged from 0 to 80% and was highest in areas previously shown to be dominated by diatoms. This is consistent with previous estimates showing that transfer efficiency in such regions is low. However we propose that, rather than the low transfer efficiency arising from diatom blooms being inherently characterized by poorly packaged aggregates which are efficiently exported but which disintegrate readily in mid water, it is due to such environments having very high levels of unballasted organic C export. en_US
dc.description.sponsorship This work is part of the lead author’s doctoral research and was supported by the CalMarO program, (E.U, grant agreement 215157) and by the U.K. Ocean 2025 program. en_US
dc.format.mimetype application/pdf
dc.format.mimetype text/plain
dc.language.iso en_US en_US
dc.publisher American Geophysical Union en_US
dc.relation.uri http://dx.doi.org/10.1029/2012GL052980
dc.subject 234Th en_US
dc.subject POC en_US
dc.subject Ballast en_US
dc.subject Particles export en_US
dc.title On the proportion of ballast versus non-ballast associated carbon export in the surface ocean en_US
dc.type Article en_US
dc.description.embargo 2013-03-11 en_US
dc.identifier.doi 10.1029/2012GL052980


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