کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1263198 | 1496720 | 2008 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Daily variability of dissolved inorganic radiocarbon at three sites in the surface ocean Daily variability of dissolved inorganic radiocarbon at three sites in the surface ocean](/preview/png/1263198.png)
We report radiocarbon measurements of dissolved inorganic carbon (DIC) in surface water samples collected daily during cruises to the central North Pacific, the Sargasso Sea and the Southern Ocean. The ranges of Δ14C measurements for each cruise (11–30‰) were larger than the total uncertainty (7.8‰, 2-sigma) of the measurements. The variability is attributed to changes in the upper water mass that took place at each site over a two to four week period. These results indicate that variability of surface Δ14C values is larger than the analytical precision, because of patchiness that exists in the DIC Δ14C signature of the surface ocean. This additional variability can affect estimates of geochemical parameters such as the air–sea CO2 exchange rate using radiocarbon.
Journal: Marine Chemistry - Volume 110, Issues 3–4, 16 June 2008, Pages 185–189