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dc.contributor.authorArtioli, Yurieng
dc.contributor.authorBlackford, Jerry C.eng
dc.contributor.authorNondal, Gisleeng
dc.contributor.authorBellerby, Richardeng
dc.contributor.authorWakelin, Sarah L.eng
dc.contributor.authorHolt, Jason T.eng
dc.contributor.authorButenschön, Mommeeng
dc.contributor.authorAllen, Julian Icaruseng
dc.date.accessioned2015-09-10T12:45:06Z
dc.date.available2015-09-10T12:45:06Z
dc.date.issued2014-02-03
dc.identifier.issn1726-4170en_US
dc.identifier.urihttps://hdl.handle.net/1956/10450
dc.description.abstractThe increase in atmospheric CO2 is a dual threat to the marine environment: from one side it drives climate change, leading to modifications in water temperature, circulation patterns and stratification intensity; on the other side it causes a decrease in marine pH (ocean acidification, or OA) due to the increase in dissolved CO2. Assessing the combined impact of climate change and OA on marine ecosystems is a challenging task. The response of the ecosystem to a single driver can be highly variable and remains still uncertain; additionally the interaction between these can be either synergistic or antagonistic. In this work we use the coupled oceanographic–ecosystem model POLCOMS-ERSEM driven by climate forcing to study the interaction between climate change and OA. We focus in particular on carbonate chemistry, primary and secondary production. The model has been run in three different configurations in order to assess separately the impacts of climate change on net primary production and of OA on the carbonate chemistry, which have been strongly supported by scientific literature, from the impact of biological feedbacks of OA on the ecosystem, whose uncertainty still has to be well constrained. The global mean of the projected decrease of pH at the end of the century is about 0.27 pH units, but the model shows significant interaction among the drivers and high variability in the temporal and spatial response. As a result of this high variability, critical tipping point can be locally and/or temporally reached: e.g. undersaturation with respect to aragonite is projected to occur in the deeper part of the central North Sea during summer. Impacts of climate change and of OA on primary and secondary production may have similar magnitude, compensating in some area and exacerbating in others.en_US
dc.language.isoengeng
dc.publisherCopernicus Publicationsen_US
dc.relation.urihttp://www.biogeosciences.net/11/601/2014/bg-11-601-2014.pdf
dc.rightsAttribution CC BYeng
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/eng
dc.titleHeterogeneity of impacts of high CO2 on the North Western European shelfen_US
dc.typePeer reviewed
dc.typeJournal article
dc.date.updated2015-07-28T11:52:30Z
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2014 The Authorsen_US
dc.identifier.doihttps://doi.org/10.5194/bg-11-601-2014
dc.identifier.cristin1160577
dc.source.journalBiogeosciences
dc.source.4011
dc.source.143
dc.source.pagenumber601-612
dc.subject.nsiVDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452
dc.subject.nsiVDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452


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