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dc.contributor.authorEricson, Ylva
dc.contributor.authorChierici, Melissa
dc.contributor.authorFalck, Eva
dc.contributor.authorFransson, Agneta Ingrid
dc.contributor.authorJones, Elizabeth Marie
dc.contributor.authorKristiansen, Svein
dc.date.accessioned2019-09-30T09:30:34Z
dc.date.available2019-09-30T09:30:34Z
dc.date.issued2019-06-11
dc.description.abstractTime series of the marine CO<sub>2</sub> system and related parameters at the IsA Station, by Adventfjorden, Svalbard, were investigated between March 2015 and November 2017. The physical and biogeochemical processes that govern changes in total alkalinity (TA), total dissolved inorganic carbon (DIC) and the saturation state of the calcium carbonate mineral aragonite (Ω<sub>Ar</sub>) were assessed on a monthly timescale. The major driver for TA and DIC was changes in salinity, caused by river runoff, mixing and advection. This accounted for 77 and 45%, respectively, of the overall variability. It contributed minimally to the variability in Ω<sub>Ar</sub> (5%); instead, biological activity was responsible for 60% of the monthly variations. For DIC, the biological activity was also important, contributing 44%. The monthly effect of air–sea CO<sub>2</sub> fluxes accounted for 11 and 15% of the total changes in DIC and Ω<sub>Ar</sub>, respectively. Net community production (NCP) during the productive season ranged between 65 and 85 g C m<sup>−2</sup>, depending on the year and the presence of either Arctic water or transformed Atlantic water (TAW). The annual NCP as estimated from DIC consumption was 34 g C m<sup>−2</sup> yr<sup>−1</sup> in 2016, which was opposite in direction but similar in magnitude to the integrated annual air–sea CO<sub>2</sub> flux (i.e., uptake of carbon from the atmosphere) of −29 g C m<sup>−2</sup> yr<sup>−1</sup> for the same year. The results showed that increased intrusions of TAW into Adventfjorden in the future could possibly lower the NCP, with the potential to reduce the CO<sub>2</sub>buffer capacity and Ω<sub>Ar</sub> over the summer season.en_US
dc.description.sponsorshipUNIS FRAM—High North Centre for Climate and the Environment, Norway Norwegian Research Council under an Arctic Field Granten_US
dc.descriptionSource at <a href=https://doi.org/10.33265/polar.v38.3345>https://doi.org/10.33265/polar.v38.3345. </a>en_US
dc.identifier.citationEricson, Y., Chierici, M., Falck, E., Fransson, A., Jones, E. & Kristiansen, S. (2019). Seasonal dynamics of the marine CO2 system in Adventfjorden, a West Spitsbergen fjord. <i>Polar Research, 38</i>, 3345. https://doi.org/10.33265/polar.v38.3345en_US
dc.identifier.cristinIDFRIDAID 1712285
dc.identifier.doi10.33265/polar.v38.3345
dc.identifier.issn0800-0395
dc.identifier.issn1751-8369
dc.identifier.urihttps://hdl.handle.net/10037/16295
dc.language.isoengen_US
dc.publisherNorsk Polarinstitutten_US
dc.relation.journalPolar Research
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497en_US
dc.subjectmarine carbonate systemen_US
dc.subjectaragoniteen_US
dc.subjectnet community productionen_US
dc.subjectArctic fjord biogeochemistryen_US
dc.subjectSvalbarden_US
dc.titleSeasonal dynamics of the marine CO2 system in Adventfjorden, a West Spitsbergen fjorden_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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