1
|
Keeling CD, Bolin B. The simultaneous use of chemical tracers in oceanic studies II. A three-reservoir model of the North and South Pacific Oceans. ACTA ACUST UNITED AC 2016. [DOI: 10.3402/tellusa.v20i1.9917] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Charles D. Keeling
- Scripps Institution of Oceanography, University of California, Sun Diego
| | - Bert Bolin
- Institute of Meteorology, University of Stockholm
| |
Collapse
|
2
|
|
3
|
Eclectic modelling of the North Atlantic. II. Transient tracers and the ventilation of the Eastern Basin thermocline. ACTA ACUST UNITED AC 1997. [DOI: 10.1098/rsta.1988.0052] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Renewal rates of the waters of the thermocline in the eastern North Atlantic are estimated by combining linear quasi-geostrophic dynamics with steady and transient tracers into a unified eclectic, reservoir model. The two-dimensional model first employed is finally rejected when it is found that it generates oxygen-utilization rates (OUR) that are, by conventional biological wisdom, too high. The three-dimensional model that replaces the two-dimensional one shows that the our is indeterminate, with possible ranges from zero to unacceptably high values. The region is flushed primarily from the north and east. The problem of using transient tracers is mathematically equivalent to that of distributed-system boundary-control theory, the open-ocean boundary conditions playing the role of the unknown control variables. The missing time histories of this new set of unknowns means that tritium and helium-3 distributions are only comparatively weak constraints on the flow field, but do set upper bounds on the vertical exchange with surface waters. Surface Ekman pumping is adequate to explain the interior distributions without additional buoyancy ventilation, although this latter process is possible. Some speculation is made about conditions under which transient tracers might play a more definitive role.
Collapse
|
4
|
Turner JS, Shirtcliffe TG, Brewer PG. Elemental Variations of Transport Coefficients Across Density Interfaces in Multiple-diffusive Systems. Nature 1970; 228:1083-4. [PMID: 16058794 DOI: 10.1038/2281083a0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/1970] [Indexed: 11/09/2022]
Affiliation(s)
- J S Turner
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge
| | | | | |
Collapse
|
5
|
KEELING CHARLESD, BOLIN BERT. The simultaneous use of chemical tracers in oceanic studies II.A three-reservoir model of the North and South Pacific Oceans. ACTA ACUST UNITED AC 1968. [DOI: 10.1111/j.2153-3490.1968.tb00348.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|