The effects of vertical mixing on the circulation of the AABW in the atlantic

Igor V. Kamenkovich, Paul J. Goodman

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations

Abstract

We study the dependence of the volume and transport of the Antarctic Bottom Water (AABW) in the Atlantic Ocean on vertical mixing. Numerical results from a set of OGCM runs show that, while the vertical extent of the AABW cell decreases with intensifying vertical mixing, the cell's transport increases. An analytical model of the deep boundary layers is then used to interpret the results. The decrease in the AABW thickness is explained by the downward expansion of the upper, North Atlantic Deep Water cell. The intensification of the AABW transport is attributed to the increase in the deep meridional pressure gradient, which drives the flow. An estimate of the AABW transport is then derived from the density balance in the deep western boundary layer and compared with the OGCM results.

Original languageEnglish (US)
Title of host publicationThe Oceans and Rapid Climate Change
Subtitle of host publicationPast, Present, and Future, 2001
EditorsDan Seidov, Bernd J. Haupt, Mark Maslin
PublisherBlackwell Publishing Ltd
Pages217-226
Number of pages10
ISBN (Electronic)9781118668603
ISBN (Print)9780875909851
DOIs
StatePublished - Jan 1 2001
Externally publishedYes

Publication series

NameGeophysical Monograph Series
Volume126
ISSN (Print)0065-8448
ISSN (Electronic)2328-8779

ASJC Scopus subject areas

  • Geophysics

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    Kamenkovich, I. V., & Goodman, P. J. (2001). The effects of vertical mixing on the circulation of the AABW in the atlantic. In D. Seidov, B. J. Haupt, & M. Maslin (Eds.), The Oceans and Rapid Climate Change: Past, Present, and Future, 2001 (pp. 217-226). (Geophysical Monograph Series; Vol. 126). Blackwell Publishing Ltd. https://doi.org/10.1029/GM126p0217