Arctic Ocean CO2 uptake: An improved multiyear estimate of the air-sea CO2 flux incorporating chlorophyll a concentrations
dc.contributor.author | Yasunaka, Sayaka | |
dc.contributor.author | Siswanto, Eko | |
dc.contributor.author | Olsen, Are | |
dc.contributor.author | Hoppema, Mario | |
dc.contributor.author | Watanabe, Eiji | |
dc.contributor.author | Fransson, Agneta Ingrid | |
dc.contributor.author | Chierici, Melissa | |
dc.contributor.author | Murata, Akihiko | |
dc.contributor.author | Lauvset, Siv Kari | |
dc.contributor.author | Wanninkhof, Rik | |
dc.contributor.author | Takahashi, Taro | |
dc.contributor.author | Kosugi, Naohiro | |
dc.contributor.author | Omar, Abdirahman | |
dc.contributor.author | van Heuven, Steven | |
dc.contributor.author | Mathis, Jeremy T. | |
dc.date.accessioned | 2018-08-29T11:56:32Z | |
dc.date.available | 2018-08-29T11:56:32Z | |
dc.date.created | 2018-06-18T18:51:12Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Biogeosciences. 2018, 15 (6), 1643-1661. | nb_NO |
dc.identifier.issn | 1726-4170 | |
dc.identifier.uri | http://hdl.handle.net/11250/2559871 | |
dc.description.abstract | We 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.iso | eng | nb_NO |
dc.title | Arctic Ocean CO2 uptake: An improved multiyear estimate of the air-sea CO2 flux incorporating chlorophyll a concentrations | nb_NO |
dc.title.alternative | Arctic Ocean CO2 uptake: An improved multiyear estimate of the air-sea CO2 flux incorporating chlorophyll a concentrations | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 1643-1661 | nb_NO |
dc.source.volume | 15 | nb_NO |
dc.source.journal | Biogeosciences | nb_NO |
dc.source.issue | 6 | nb_NO |
dc.identifier.doi | 10.5194/bg-15-1643-2018 | |
dc.identifier.cristin | 1592041 | |
cristin.unitcode | 7431,20,0,0 | |
cristin.unitname | Oseanografi og klima | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 |
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