Data from: Isopycnal mixing suppression by the Antarctic Circumpolar Current and the Southern Ocean Meridional Overturning Circulation ...
The meridional overturning circulation (MOC) in the Southern Ocean is investigated using hydrographic observations combined with satellite measurements of sea surface height. A three-dimensional (spatial and vertical) estimate of the isopycnal eddy diffusivity in the Southern Ocean is obtained using...
| Main Authors: | , |
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| Format: | Dataset |
| Language: | English |
| Published: |
Dryad
2017
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.55bp8 https://datadryad.org/stash/dataset/doi:10.5061/dryad.55bp8 |
| Summary: | The meridional overturning circulation (MOC) in the Southern Ocean is investigated using hydrographic observations combined with satellite measurements of sea surface height. A three-dimensional (spatial and vertical) estimate of the isopycnal eddy diffusivity in the Southern Ocean is obtained using the theory of Ferrari and Nikurashin that includes the influence of suppression of the diffusivity by the strong, time-mean flows. It is found that the eddy diffusivity is enhanced at depth, reaching a maximum at the critical layer near 1000 m. The estimate of diffusivity is used with a simple diffusive parameterization to estimate the meridional eddy volume flux. This estimate of eddy volume flux is combined with an estimate of the Ekman transport to reconstruct the time-mean overturning circulation. By comparing the reconstruction with, and without, suppression of the eddy diffusivity by the mean flow, the influence of the suppression on the overturning is illuminated. It is shown that the suppression of the ... : mapped_gamma_all_sources_2005Neutral Density (Jackett & McDougall, 1997) for the year 2005 (with annual and semi-annual harmonics) from 75S to 30S.mapped_gamma_all_sources_2006Neutral Density (Jackett & McDougall, 1997) for the year 2006 (with annual and semi-annual harmonics) from 75S to 30S.mapped_gamma_all_sources_2007Neutral Density (Jackett & McDougall, 1997) for the year 2007 (with annual and semi-annual harmonics) from 75S to 30S.mapped_gamma_all_sources_2008Neutral Density (Jackett & McDougall, 1997) for the year 2008 (with annual and semi-annual harmonics) from 75S to 30S.mapped_gamma_all_sources_2009Neutral Density (Jackett & McDougall, 1997) for the year 2009 (with annual and semi-annual harmonics) from 75S to 30S.mapped_gamma_all_sources_2010Neutral Density (Jackett & McDougall, 1997) for the year 2010 (with annual and semi-annual harmonics) from 75S to 30S.mapped_gamma_all_sources_2011Neutral Density (Jackett & McDougall, 1997) for the year 2010 (with annual and ... |
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