Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1262516 | Marine Chemistry | 2007 | 6 Pages |
Abstract
Surface water samples were collected daily in June 2000 at a site in the Sargasso Sea to observe variability of Î14C values in dissolved inorganic carbon (DIC). Temperature, salinity, DIC concentration, alkalinity, and δ13C and Î14C values of DIC were measured in the samples. Ten Î14C measurements averaged 81 ± 8â° and had a range of 24â° over the sixteen-day cruise. Î14C values were more variable during the latter half of the cruise. Salinity and temperature measurements in the mixed layer throughout the cruise indicate that there were changes in water mass that occurred at our site. We conclude that the daily range of DIC Î14C values in the surface ocean at our site is several times greater than the annual change in surface waters in the Sargasso Sea during the last two decades of the 20th century. This points to the importance of obtaining multiple measurements of the surface ocean to adequately define the true variability of DIC Î14C measurements.
Related Topics
Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Kelsey McDuffee, Ellen R.M. Druffel,