Vis enkel innførsel

dc.contributor.authorFransner, Filippa
dc.contributor.authorFransson, Agneta Ingrid
dc.contributor.authorHumborg, Christoph
dc.contributor.authorGustafsson, Erik
dc.contributor.authorTedesco, Letizia
dc.contributor.authorHordoir, Robinson
dc.contributor.authorNycander, Jonas
dc.date.accessioned2020-01-15T09:38:55Z
dc.date.available2020-01-15T09:38:55Z
dc.date.created2019-06-07T11:02:06Z
dc.date.issued2019
dc.identifier.citationBiogeosciences. 2019, 16 (4), 863-879.nb_NO
dc.identifier.issn1726-4170
dc.identifier.urihttp://hdl.handle.net/11250/2636354
dc.description.abstractCoastal seas receive large amounts of terrestrially derived organic carbon (OC). The fate of this carbon, and its impact on the marine environment, is however poorly understood. Here we combine underway CO2 partial pressure (pCO2) measurements with coupled 3-D hydrodynamical–biogeochemical modelling to investigate whether remineralization of terrestrial dissolved organic carbon (tDOC) can explain CO2 supersaturated surface waters in the Gulf of Bothnia, a subarctic estuary. We find that a substantial remineralization of tDOC and a strong tDOC-induced light attenuation dampening the primary production are required to reproduce the observed CO2 supersaturated waters in the nearshore areas. A removal rate of tDOC of the order of 1 year, estimated in a previous modelling study in the same area, gives a good agreement between modelled and observed pCO2. The remineralization rate is on the same order as bacterial degradation rates calculated from published incubation experiments, suggesting that bacteria has the potential to cause this degradation. Furthermore, the observed high pCO2 values during the ice-covered season argue against photochemical degradation as the main removal mechanism. All of the remineralized tDOC is outgassed to the atmosphere in the model, turning the northernmost part of the Gulf of Bothnia into a source of CO2 to the atmosphere.nb_NO
dc.language.isoengnb_NO
dc.titleRemineralization rate of terrestrial DOC as inferred from CO2 supersaturated coastal watersnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber863-879nb_NO
dc.source.volume16nb_NO
dc.source.journalBiogeosciencesnb_NO
dc.source.issue4nb_NO
dc.identifier.doi10.5194/bg-16-863-2019
dc.identifier.cristin1703408
cristin.unitcode7431,20,0,0
cristin.unitnameOseanografi og klima
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel