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Determination of the Prebomb Southern (Antarctic) Ocean Radiocarbon in Organic Matter [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2001.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
5p : digital, PDF file
Additional Creators
Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The Southern Hemisphere is an important and unique region of the world's oceans for water-mass formation and mixing, upwelling, nutrient utilization, and carbon export. In fact, one of the primary interests of the oceanographic community is to decipher the climatic record of these processes in the source or sink terms for Southern Ocean surface waters in the CO₂ balance of the atmosphere. Current coupled ocean-atmosphere modeling efforts to trace the input of CO₂ into the ocean imply a strong sink of anthropogenic CO₂ in the southern ocean. However, because of its relative inaccessibility and the difficulty in directly measuring CO₂ fluxes in the Southern Ocean, these results are controversial at best. An accepted diagnostic of the exchange of CO₂ between the atmosphere and ocean is the prebomb distribution of radiocarbon in the ocean and its time-history since atmospheric nuclear testing. Such histories of ¹⁴C in the surface waters of the Southern Ocean do not currently exist, primarily because there are few continuous biological archives (e.g., in corals) such as those that have been used to monitor the ¹⁴C history of the tropics and subtropics. One of the possible long-term archives is the scallop Adamussium collbecki. Although not independently confirmed, relatively crude growth rate estimates of A. collbecki indicate that it has the potential to provide continuous 100 year time-series. We are exploring the suitability of this potential archive.
Report Numbers
E 1.99:ucrl-id-142828
ucrl-id-142828
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Other Subject(s)
Note
Published through SciTech Connect.
02/26/2001.
"ucrl-id-142828"
Guilderson, T P.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14137530