A model of the Arctic Ocean carbon cycle

dc.contributor.author Manizza, Manfredi
dc.contributor.author Follows, Michael J.
dc.contributor.author Dutkiewicz, Stephanie
dc.contributor.author Menemenlis, Dimitris
dc.contributor.author McClelland, James W.
dc.contributor.author Hill, C. N.
dc.contributor.author Peterson, Bruce J.
dc.contributor.author Key, Robert M.
dc.date.accessioned 2012-01-23T20:34:21Z
dc.date.available 2014-10-22T08:57:24Z
dc.date.issued 2011-12-15
dc.description Author Posting. © American Geophysical Union, 2011. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 116 (2011): C12020, doi:10.1029/2011JC006998. en_US
dc.description.abstract A three dimensional model of Arctic Ocean circulation and mixing, with a horizontal resolution of 18 km, is overlain by a biogeochemical model resolving the physical, chemical and biological transport and transformations of phosphorus, alkalinity, oxygen and carbon, including the air-sea exchange of dissolved gases and the riverine delivery of dissolved organic carbon. The model qualitatively captures the observed regional and seasonal trends in surface ocean PO4, dissolved inorganic carbon, total alkalinity, and pCO2. Integrated annually, over the basin, the model suggests a net annual uptake of 59 Tg C a−1, within the range of published estimates based on the extrapolation of local observations (20–199 Tg C a−1). This flux is attributable to the cooling (increasing solubility) of waters moving into the basin, mainly from the subpolar North Atlantic. The air-sea flux is regulated seasonally and regionally by sea-ice cover, which modulates both air-sea gas transfer and the photosynthetic production of organic matter, and by the delivery of riverine dissolved organic carbon (RDOC), which drive the regional contrasts in pCO2 between Eurasian and North American coastal waters. Integrated over the basin, the delivery and remineralization of RDOC reduces the net oceanic CO2 uptake by ~10%. en_US
dc.description.embargo 2012-06-15
dc.description.sponsorship This study has been carried out as part of ECCO2 and SASS (Synthesis of the Arctic System Science) projects funded by NASA and NSF, respectively. MM and MJF are grateful for support from the National Science Foundation (ARC-0531119 and ARC-0806229) for financial support. MM also acknowledges NASA for providing computer time, the use of the computing facilities at NAS center and also the Scripps post-doctoral program for further financial support that helped to complete the manuscript. RMK also acknowledges NOAA for support (NA08OAR4310820 and NA08OAR4320752). en_US
dc.format.mimetype application/pdf
dc.identifier.citation Journal of Geophysical Research 116 (2011): C12020 en_US
dc.identifier.doi 10.1029/2011JC006998
dc.identifier.uri https://hdl.handle.net/1912/4990
dc.language.iso en_US en_US
dc.publisher American Geophysical Union en_US
dc.relation.uri https://doi.org/10.1029/2011JC006998
dc.subject Air-sea gas exchange en_US
dc.subject Biogeochemical cycles en_US
dc.subject Land-ocean coupling en_US
dc.subject Numerical modeling en_US
dc.subject Ocean carbon cycle en_US
dc.subject Polar oceans en_US
dc.title A model of the Arctic Ocean carbon cycle en_US
dc.type Article en_US
dspace.entity.type Publication
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