Can Paleoceanographic Tracers Constrain Meridional Circulation Rates?

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Can Paleoceanographic Tracers Constrain Meridional Circulation Rates?

Show simple item record Huybers, Peter John Gebbie, Geoffrey A Marchal, Olivier 2009-11-05T21:02:14Z 2007
dc.identifier.citation Huybers, Peter J., Geoffrey Gebbie, and Olivier Marchal. 2007. Can paleoceanographic tracers constrain meridional circulation rates? Journal of Physical Oceonography 37(2): 394-407. en_US
dc.identifier.issn 0022-3670 en_US
dc.description.abstract The ability of paleoceanographic tracers to constrain rates of transport is examined using an inverse method to combine idealized observations with a geostrophic model. Considered are the spatial distribution, accuracy, and types of tracers required to constrain changes in meridional transport within an idealized single-hemisphere basin. Measurements of density and radioactive tracers each act to constrain rates of transport. Conservative tracers, while not of themselves able to inform regarding rates of transport, improve constraints when coupled with density or radioactive observations. It is found that the tracer data would require an accuracy one order of magnitude better than is presently available for paleo-observations to conclusively rule out factor-of-2 changes in meridional transport, even when assumed available over the entire model domain. When data are available only at the margins and bottom of the model, radiocarbon is unable to constrain transport while density remains effective only when a reference velocity level is assumed. The difficulty in constraining the circulation in this idealized model indicates that placing firm bounds on past meridional transport rates will prove challenging. en_US
dc.description.sponsorship Earth and Planetary Sciences en_US
dc.language.iso en_US en_US
dc.publisher American Meteorological Society en_US
dc.relation.isversionof en_US
dc.relation.hasversion en_US
dash.license LAA
dc.title Can Paleoceanographic Tracers Constrain Meridional Circulation Rates? en_US
dc.type Journal Article en_US
dc.description.version Version of Record en_US
dc.relation.journal Journal of Physical Oceanography en_US Huybers, Peter John 2009-11-05T21:02:14Z

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