Oceanography The Official Magazine of
The Oceanography Society
Volume 25 Issue 03

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Volume 25, No. 3
Pages 134 - 135

SIDEBAR • cDrake: Dynamics and Transport of the Antarctic Circumpolar Current in Drake Passage

Teresa K. Chereskin Kathleen A. DonohueD. Randolph Watts
First Paragraph

The Southern Ocean is especially sensitive to climate change, responding to winds that have increased over the past 30 years (Thompson and Solomon, 2002) and warming at about one degree per century in the core of the Antarctic Circumpolar Current (ACC; Gille, 2002). Drake Passage is a major control point of the ACC. It is a region of high mesoscale variability and complex topography. Eddies are thought to be essential for transferring momentum from the circumpolar winds that drive the ACC down to the seafloor where topographic form stresses regulate its transport. The cDrake experiment was designed to address fundamental dynamics not yet understood regarding wind forcing, eddy-mean momentum, and heat exchange, as well as form-drag interaction with bathymetry (Chereskin et al., 2009; http://cDrake.org).

Citation

Chereskin, T.K., K.A. Donohue, and D.R. Watts. 2012. cDrake: Dynamics and transport of the Antarctic Circumpolar Current in Drake Passage. Oceanography 25(3):134–135, https://doi.org/10.5670/oceanog.2012.86.

References

Chereskin, T.K., K.A. Donohue, D.R. Watts, K.L. Tracey, Y.L. Firing, and A.L. Cutting. 2009. Strong bottom currents and cyclogenesis in Drake Passage. Geophysical Research Letters 36, L23602, https://doi.org/10.1029/2009GL040940.

Gille, S.T. 2002. Warming of the Southern Ocean since the 1950s. Science 295:1,275–1,277, https://doi.org/10.1126/science.1065863.

Mazloff, M.R., P. Heimbach, and C. Wunsch. 2010. An eddy permitting Southern Ocean state estimate. Journal of Physical Oceanography 40:880–899, https://doi.org/10.1175/2009JPO4236.1.

Meredith, M.P., P.L. Woodworth, T.K. Chereskin, D.P. Marshall, L.C. Allison, G.R. Bigg, K.A. Donohue, K.J. Heywood, C.W. Hughes, A. Hibbert, and others. 2011. Sustained monitoring of the Southern Ocean at Drake Passage: Past achievements and future priorities. Reviews of Geophysics 49, RG4005, https://doi.org/10.1029/2010RG000348.

Thompson, D.W.J., and S. Solomon. 2002. Interpretation of recent Southern Hemisphere climate change. Science 296:895–899, https://doi.org/10.1126/science.1069270.

Rintoul, S.R., K. Speer, M. Sparrow, M. Meredith, E. Hofmann, E. Fahrbach, C. Summerhayes, A. Worby, M. England, R. Bellerby, and others. 2010. Southern Ocean Observing System (SOOS): Rationale and strategy for sustained observations of the Southern Ocean. In Proceedings of OceanObs ‘09: Sustained Ocean Observations and Information for Society (Vol. 2), Venice, Italy, September 21–25, 2009. J. Hall, D.E. Harrison, and D. Stammer, eds. European Space Agency Publication WPP-306, https://doi.org/10.5270/OceanObs09.cwp.74.

Watts, D.R., C. Sun, and S. Rintoul. 2001. A two-dimensional gravest empirical mode determined from hydrographic observations in the Subantarctic Front. Journal of Physical Oceanography 31:2,186–2,209, https://doi.org/10.1175/1520-0485(2001)031<2186:ATDGEM>2.0.CO;2.