@article {390,
	title = {Flux and age of dissolved organic carbon exported to the Arctic Ocean: A carbon isotopic study of the five largest arctic rivers RID C-4087-2009 RID C-5396-2008},
	journal = {Global Biogeochemical Cycles},
	volume = {21},
	year = {2007},
	note = {id: 2033; PT: J; UT: WOS:000250704000002},
	pages = {GB4011-GB4011},
	abstract = {The export and Delta C-14-age of dissolved organic carbon (DOC) was determined for the Yenisey, Lena, Ob{\textquoteright}, Mackenzie, and Yukon rivers for 2004 - 2005. Concentrations of DOC elevate significantly with increasing discharge in these rivers, causing approximately 60\% of the annual export to occur during a 2-month period following spring ice breakup. We present a total annual flux from the five rivers of similar to 16 teragrams (Tg), and conservatively estimate that the total input of DOC to the Arctic Ocean is 25 - 36 Tg, which is similar to 5-20\% greater than previous fluxes. These fluxes are also similar to 2.5 x greater than temperate rivers with similar watershed sizes and water discharge. Delta C-14-DOC shows a clear relationship with hydrology. A small pool of DOC slightly depleted in Delta C-14 is exported with base flow. The large pool exported with spring thaw is enriched in D14C with respect to current-day atmospheric Delta C-14-CO2 values. A simple model predicts that similar to 50\% of DOC exported during the arctic spring thaw is 1 - 5 years old, similar to 25\% is 6 - 10 years in age, and 15\% is 11 - 20 years old. The dominant spring melt period, a historically undersampled period, exports a large amount of young and presumably semilabile DOC to the Arctic Ocean.},
	issn = {0886-6236},
	doi = {10.1029/2007GB002934},
	author = {Raymond, Peter A. and McClelland, J. W. and Holmes, R. M. and Zhulidov, A. V. and Mull, K. and Peterson, B. J. and Striegl, R. G. and Aiken, G. R. and Gurtovaya, T. Y.}
}
