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dc.contributor.authorAnderson, Leif G.
dc.contributor.authorEk, Jörgen
dc.contributor.authorEricson, Ylva
dc.contributor.authorHumborg, Christoph
dc.contributor.authorSemiletov, Igor
dc.contributor.authorSundbom, Magnus
dc.contributor.authorUlfsbo, Adam
dc.date.accessioned2019-02-21T10:36:31Z
dc.date.available2019-02-21T10:36:31Z
dc.date.issued2017-04-05
dc.identifier.issn1726-4170en_US
dc.identifier.urihttps://hdl.handle.net/1956/19130
dc.description.abstractThe Siberian shelf seas are areas of extensive biogeochemical transformation of organic matter, both of marine and terrestrial origin. This in combination with brine production from sea ice formation results in a cold bottom water of relative high salinity and partial pressure of carbon dioxide (pCO2). Data from the SWERUS-C3 expedition compiled on the icebreaker Oden in July to September 2014 show the distribution of such waters at the outer shelf, as well as their export into the deep central Arctic basins. Very high pCO2 water, up to ~ 1000 μatm, was observed associated with high nutrients and low oxygen concentrations. Consequently, this water had low saturation state with respect to calcium carbonate down to less than 0.8 for calcite and 0.5 for aragonite. Waters undersaturated in aragonite were also observed in the surface in waters at equilibrium with atmospheric CO2; however, at these conditions the cause of undersaturation was low salinity from river runoff and/or sea ice melt. The calcium carbonate corrosive water was observed all along the continental margin and well out into the deep Makarov and Canada basins at a depth from about 50mdepth in the west to about 150m in the east. These waters of low aragonite saturation state are traced in historic data to the Canada Basin and in the waters flowing out of the Arctic Ocean north of Greenland and in the western Fram Strait, thus potentially impacting the marine life in the North Atlantic Ocean.en_US
dc.language.isoengeng
dc.publisherCopernicus Publications on behalf of the European Geosciences Unionen_US
dc.relation.ispartof<a href="http://hdl.handle.net/1956/19131" target="blank"> Drivers of the marine CO2 system in the High Arctic - from the deep basins to the shallow fjords</a>en_US
dc.rightsAttribution CC BYeng
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/eng
dc.titleExport of calcium carbonate corrosive waters from the East Siberian Seaen_US
dc.typePeer reviewed
dc.typeJournal article
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2017 The Authorsen_US
dc.identifier.doihttps://doi.org/10.5194/bg-14-1811-2017
dc.identifier.cristin1549901
dc.source.journalBiogeosciences
dc.source.4014
dc.source.pagenumber1811-1823


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