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  • Fransson, Agneta,1964Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences,University of Gothenburg (author)

CO2-system development in young sea ice and CO2 gas exchange at the ice/air interface mediated by brine and frost flowers in Kongsfjorden, Spitsbergen

  • Article/chapterEnglish2015

Publisher, publication year, extent ...

  • 2015

Numbers

  • LIBRIS-ID:oai:gup.ub.gu.se/219729
  • https://gup.ub.gu.se/publication/219729URI
  • https://doi.org/10.3189/2015AoG69A563DOI
  • https://research.chalmers.se/publication/219729URI

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  • Language:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • In March and April 2010, we investigated the development of young landfast sea ice in Kongsfjorden, Spitsbergen, Svalbard. We sampled the vertical column, including sea ice, brine, frost flowers and sea water, to determine the CO2 system, nutrients, salinity and bacterial and ice algae production during a 13 day interval of ice growth. Apart from the changes due to salinity and brine rejection, the sea-ice concentrations of total inorganic carbon (C T), total alkalinity (A T), CO2 and carbonate ions (CO3 2–) in melted ice were influenced by dissolution of calcium carbonate (CaCO3) precipitates (25–55 μmol kg–1) and played the largest role in the changes to the CO2 system. The C T values were also influenced by CO2 gas flux, bacterial carbon production and primary production, which had a small impact on the C T. The only exception was the uppermost ice layer. In the top 0.05 m of the ice, there was a CO2 loss of ∼20 μmol kg–1 melted ice (1 mmol m–2) from the ice to the atmosphere. Frost flowers on newly formed sea ice were important in promoting ice–air CO2 gas flux, causing a CO2 loss to the atmosphere of 140–800 μmol kg–1 d–1 melted frost flowers (7–40 mmol m–2 d–1).

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  • Chierici, Melissa,1968Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg(Swepub:gu)xchime (author)
  • Abrahamsson, Katarina,1957Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg(Swepub:cth)xabrak (author)
  • Andersson, Maria,1980Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg(Swepub:gu)xamarw (author)
  • Granfors, Anna,1978Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg (author)
  • Gårdfeldt, Katarina,1959Gothenburg University,Göteborgs universitet,Göteborgs miljövetenskapliga centrum, GMV,Centre for Environment and Sustainability,University of Gothenburg,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)katarina (author)
  • Torstensson, AndersGothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,University of Gothenburg(Swepub:gu)xtorsa (author)
  • Wulff, Angela,1963Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,University of Gothenburg(Swepub:gu)xwulan (author)
  • Göteborgs universitetInstitutionen för geovetenskaper (creator_code:org_t)

Related titles

  • In:Annals of Glaciology56:69, s. 245-2570260-3055

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