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dc.contributor.authorYasunaka, Sayaka
dc.contributor.authorSiswanto, Eko
dc.contributor.authorOlsen, Are
dc.contributor.authorHoppema, Mario
dc.contributor.authorWatanabe, Eiji
dc.contributor.authorFransson, Agneta Ingrid
dc.contributor.authorChierici, Melissa
dc.contributor.authorMurata, Akihiko
dc.contributor.authorLauvset, Siv Kari
dc.contributor.authorWanninkhof, Rik
dc.contributor.authorTakahashi, Taro
dc.contributor.authorKosugi, Naohiro
dc.contributor.authorOmar, Abdirahman
dc.contributor.authorvan Heuven, Steven
dc.contributor.authorMathis, Jeremy T.
dc.date.accessioned2018-08-29T11:56:32Z
dc.date.available2018-08-29T11:56:32Z
dc.date.created2018-06-18T18:51:12Z
dc.date.issued2018
dc.identifier.citationBiogeosciences. 2018, 15 (6), 1643-1661.nb_NO
dc.identifier.issn1726-4170
dc.identifier.urihttp://hdl.handle.net/11250/2559871
dc.description.abstractWe estimated monthly air–sea CO2 fluxes in the Arctic Ocean and its adjacent seas north of 60° N from 1997 to 2014. This was done by mapping partial pressure of CO2 in the surface water (pCO2w) using a self-organizing map (SOM) technique incorporating chlorophyll a concentration (Chl a), sea surface temperature, sea surface salinity, sea ice concentration, atmospheric CO2 mixing ratio, and geographical position. We applied new algorithms for extracting Chl a from satellite remote sensing reflectance with close examination of uncertainty of the obtained Chl a values. The overall relationship between pCO2w and Chl a was negative, whereas the relationship varied among seasons and regions. The addition of Chl a as a parameter in the SOM process enabled us to improve the estimate of pCO2w, particularly via better representation of its decline in spring, which resulted from biologically mediated pCO2w reduction. As a result of the inclusion of Chl a, the uncertainty in the CO2 flux estimate was reduced, with a net annual Arctic Ocean CO2 uptake of 180 ± 130 Tg C yr−1. Seasonal to interannual variation in the CO2 influx was also calculated.nb_NO
dc.language.isoengnb_NO
dc.titleArctic Ocean CO2 uptake: An improved multiyear estimate of the air-sea CO2 flux incorporating chlorophyll a concentrationsnb_NO
dc.title.alternativeArctic Ocean CO2 uptake: An improved multiyear estimate of the air-sea CO2 flux incorporating chlorophyll a concentrationsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber1643-1661nb_NO
dc.source.volume15nb_NO
dc.source.journalBiogeosciencesnb_NO
dc.source.issue6nb_NO
dc.identifier.doi10.5194/bg-15-1643-2018
dc.identifier.cristin1592041
cristin.unitcode7431,20,0,0
cristin.unitnameOseanografi og klima
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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