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dc.contributor.authorWallhead, P. J.
dc.contributor.authorBellerby, R.G.J.
dc.contributor.authorSilyakova, A.
dc.contributor.authorSlagstad, D.
dc.contributor.authorPolukhin, A. A.
dc.date.accessioned2018-05-31T13:28:31Z
dc.date.available2018-05-31T13:28:31Z
dc.date.issued2017-10-25
dc.description.abstractThe impacts of oceanic CO2 uptake and global warming on the surface ocean environment have received substantial attention, but few studies have focused on shelf bottom water, despite its importance as habitat for benthic organisms and demersal fisheries such as cod. We used a downscaling ocean biogeochemical model to project bottom water acidification and warming on the western Eurasian Arctic shelves. A model hindcast produced 14–18 year acidification trends that were largely consistent with observational estimates at stations in the Iceland and Irminger Seas. Projections under SRES A1B scenario revealed a rapid and spatially variable decline in bottom pH by 0.10–0.20 units over 50 years (2.5%–97.5% quantiles) at depths 50–500 m on the Norwegian, Barents, Kara, and East Greenland shelves. Bottom water undersaturation with respect to aragonite occurred over the entire Kara shelf by 2040 and over most of the Barents and East Greenland shelves by 2070. Shelf acidification was predominantly driven by the accumulation of anthropogenic CO2, and was concurrent with warming of 0.1–2.78C over 50 years. These combined perturbations will act as significant multistressors on the Barents and Kara shelves. Future studies should aim to improve the resolution of shelf bottom processes in models, and should consider the Kara Sea and Russian shelves as possible bellwethers of shelf acidification.en_US
dc.description<a href=https://doi.org/10.1002/2017JC013231> https://doi.org/10.1002/2017JC013231</a>.en_US
dc.identifier.citationWallhead, P. J., Bellerby, R. G. J., Silyakova, A., Slagstad, D. & Polukhin, A. A. (2017). Bottom water acidification and warming on the western Eurasian Arctic shelves: Dynamical downscaling projections. Journal of Geophysical Research: Oceans, 122, 8126–8144. https://doi.org/10.1002/2017JC013231en_US
dc.identifier.cristinIDFRIDAID 1499879
dc.identifier.doi10.1002/2017JC013231
dc.identifier.issn2169-9275
dc.identifier.issn2169-9291
dc.identifier.urihttps://hdl.handle.net/10037/12818
dc.language.isoengen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.journalJournal of Geophysical Research - Oceans
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/NORKLIMA/184860/Norway/Marine Ecosystem Response to a Changing Climate//.en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/POLARPROG/225956/Norway/Processes and Players in Arctic Marine Pelagic Food Webs - Biogeochemistry, Environment and Climate Change//.en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/212085/EU/Marine Ecosystem Evolution in a Changing Environment/MEECE/.en_US
dc.relation.projectIDInfo:eu-repo/grantAgreement/EC/FP7/264933/EU/European Union Basin-scale Analysis, Synthesis and Integration/EURO_BASIN/.en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452en_US
dc.subjectBiogeochemicalen_US
dc.subjectModelen_US
dc.subjectShelfen_US
dc.subjectClimate Changeen_US
dc.subjectOceanen_US
dc.titleBottom water acidification and warming on the western Eurasian Arctic shelves: Dynamical downscaling projectionsen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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