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Modeling transport and fate of riverine dissolved organic carbon in the Arctic Ocean

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dc.contributor.author Manizza, Manfredi
dc.contributor.author Follows, Michael J.
dc.contributor.author Dutkiewicz, Stephanie
dc.contributor.author McClelland, James W.
dc.contributor.author Menemenlis, Dimitris
dc.contributor.author Hill, C. N.
dc.contributor.author Townsend-Small, Amy
dc.contributor.author Peterson, Bruce J.
dc.date.accessioned 2010-05-07T18:25:31Z
dc.date.available 2010-05-07T18:25:31Z
dc.date.issued 2009-10-07
dc.identifier.citation Global Biogeochemical Cycles 23 (2009): GB4006 en_US
dc.identifier.uri http://hdl.handle.net/1912/3416
dc.description Author Posting. © American Geophysical Union, 2009. 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 23 (2009): GB4006, doi:10.1029/2008GB003396. en_US
dc.description.abstract The spatial distribution and fate of riverine dissolved organic carbon (DOC) in the Arctic may be significant for the regional carbon cycle but are difficult to fully characterize using the sparse observations alone. Numerical models of the circulation and biogeochemical cycles of the region can help to interpret and extrapolate the data and may ultimately be applied in global change sensitivity studies. Here we develop and explore a regional, three-dimensional model of the Arctic Ocean in which, for the first time, we explicitly represent the sources of riverine DOC with seasonal discharge based on climatological field estimates. Through a suite of numerical experiments, we explore the distribution of DOC-like tracers with realistic riverine sources and a simple linear decay to represent remineralization through microbial degradation. The model reproduces the slope of the DOC-salinity relationship observed in the eastern and western Arctic basins when the DOC tracer lifetime is about 10 years, consistent with published inferences from field data. The new empirical parameterization of riverine DOC and the regional circulation and biogeochemical model provide new tools for application in both regional and global change studies. en_US
dc.description.sponsorship I.M.M. and M.J.F. are grateful to National Science Foundation for financial support. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher American Geophysical Union en_US
dc.relation.uri http://dx.doi.org/10.1029/2008GB003396
dc.subject Arctic Ocean en_US
dc.subject Ocean circulation en_US
dc.subject Biogeochemical processes en_US
dc.title Modeling transport and fate of riverine dissolved organic carbon in the Arctic Ocean en_US
dc.type Article en_US
dc.identifier.doi 10.1029/2008GB003396


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