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dc.contributor.authorThomas, Helmuth  Concept link
dc.contributor.authorProwe, A. E. Friederike  Concept link
dc.contributor.authorvan Heuven, Steven  Concept link
dc.contributor.authorBozec, Yann  Concept link
dc.contributor.authorBaar, Hein J. W. de  Concept link
dc.contributor.authorSchiettecatte, Laure-Sophie  Concept link
dc.contributor.authorSuykens, Kim  Concept link
dc.contributor.authorKone, Mathieu  Concept link
dc.contributor.authorBorges, Alberto V.  Concept link
dc.contributor.authorLima, Ivan D.  Concept link
dc.contributor.authorDoney, Scott C.  Concept link
dc.date.accessioned2010-05-06T19:21:03Z
dc.date.available2010-05-06T19:21:03Z
dc.date.issued2007-10-06
dc.identifier.citationGlobal Biogeochemical Cycles 21 (2007): GB4001en_US
dc.identifier.urihttps://hdl.handle.net/1912/3404
dc.descriptionAuthor Posting. © American Geophysical Union, 2007. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 21 (2007): GB4001, doi:10.1029/2006GB002825.en_US
dc.description.abstractNew observations from the North Sea, a NW European shelf sea, show that between 2001 and 2005 the CO2 partial pressure (pCO2) in surface waters rose by 22 μatm, thus faster than atmospheric pCO2, which in the same period rose approximately 11 μatm. The surprisingly rapid decline in air-sea partial pressure difference (ΔpCO2) is primarily a response to an elevated water column inventory of dissolved inorganic carbon (DIC), which, in turn, reflects mostly anthropogenic CO2 input rather than natural interannual variability. The resulting decline in the buffering capacity of the inorganic carbonate system (increasing Revelle factor) sets up a theoretically predicted feedback loop whereby the invasion of anthropogenic CO2 reduces the ocean's ability to uptake additional CO2. Model simulations for the North Atlantic Ocean and thermodynamic principles reveal that this feedback should be stronger, at present, in colder midlatitude and subpolar waters because of the lower present-day buffer capacity and elevated DIC levels driven either by northward advected surface water and/or excess local air-sea CO2 uptake. This buffer capacity feedback mechanism helps to explain at least part of the observed trend of decreasing air-sea ΔpCO2 over time as reported in several other recent North Atlantic studies.en_US
dc.description.sponsorshipS. Doney and I. Lima were supported by NSF/ONR NOPP (N000140210370) and NASA (NNG05GG30G).en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2006GB002825
dc.subjectAnthropogenic CO2en_US
dc.subjectRevelle factoren_US
dc.subjectNorth Seaen_US
dc.titleRapid decline of the CO2 buffering capacity in the North Sea and implications for the North Atlantic Oceanen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2006GB002825


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