Fast northward energy transfer in the atlantic due to Agulhas rings

Journal of Physical Oceanography

Volumn 37, Issue 9, 2007, Pages 2305-2315

  van Sebille, Erik ^a   van Leeuwen, Peter Jan ^a  

^a UTRECHT UNIVERSITY   (Netherlands)

Author keywords

[No Author keywords available]

Indexed keywords

APPROXIMATION THEORY; ENERGY TRANSFER; MATHEMATICAL MODELS; PARAMETERIZATION; PRESSURE; SURFACE TOPOGRAPHY; TEMPERATURE; WATER WAVES;

BAROCLINIC ENERGY; TOPOGRAPHIC WAVES; WAVE ENERGY;

OCEANOGRAPHY;

BAROCLINIC WAVE; BAROTROPIC WAVE; MERIDIONAL CIRCULATION; OCEANIC CIRCULATION; OVERTURN; WAVE ENERGY; WAVE GENERATION;

AGULHAS RIDGE; ATLANTIC OCEAN; MID-ATLANTIC RIDGE;

EID: 35148822740     PISSN: 00223670     EISSN: None     Source Type: Journal    
DOI: 10.1175/JPO3108.1     Document Type: Article

References (39)

1. Anderson, D., and P. Rowlands, 1976: The role of inertia-gravity and planetary waves in the response of a tropical ocean to the incidence of an equatorial Kelvin wave on a meridional boundary. J. Mar. Res., 34, 295-312.
2. Andersson, H., and G. Veronis, 2004: Thermohaline circulation in a two-layer model with sloping boundaries and a mid-ocean ridge. Deep-Sea Res. I, 51, 93-106.
3. Barnier, B., 1988: A numerical study of the Mid-Atlantic Ridge on nonlinear first-mode baroclinic Rossby waves generated by seasonal winds. J. Phys. Oceanogr., 18, 417-433.
4. Beismann, J., R. Käse, and J. Lutjeharms, 1999: On the influence of submarine ridges on translation and stability of Agulhas rings. J. Geophys. Res., 104, 7897-7906.
5. Boebel, O., J. Lutjeharms, C. Schmid, W. Zenk, T. Rossby, and C. Barron, 2003: The Cape Cauldron, a regime of turbulent inter-ocean exchange. Deep-Sea Res. II, 50, 57-86.
6. 2 upset the current balance. Science, 278, 1582-1588.
7. Bryden, H., H. Longworth, and S. Cunningham, 2005: Slowing of the Atlantic meridional overturning circulation at 25°N. Nature, 438, 655-657.
8. Cessi, P., and P. Otheguy, 2003: Oceanic teleconnections: Remote response to decadal wind forcing. J. Phys. Oceanogr., 33, 1604-1617.
9. Clark, P., N. Pisias, T. Stocker, and A. Weaver, 2002: The role of the thermohaline circulation in abrupt climate change. Nature, 415, 863-869.
10. De Ruijter, W., A. Biastoch, S. Drijfhout, J. Lutjeharms, R. Matano, T. Pichevin, P. J. Van Leeuwen, and W. Weijer, 1999: Indian-Atlantic interocean exchange: Dynamics, estimation and impact. J. Geophys. Res., 104, 20 885-20 910.
11. De Ruijter, W., H. Ridderinkhof, and M. Schouten, 2005: Variability of the southwest Indian Ocean. Philos. Trans. Roy. Soc. London A, 363, 63-76.
12. De Steur, L., P. J. Van Leeuwen, and S. Drijfhout, 2004: Tracer leakage from modelled Agulhas rings. J. Phys. Oceanogr., 34, 1387-1399.
13. Drijfhout, S., C. Katsman, L. De Steur, P. Van der Vaart, P. J. Van Leeuwen, and C. Verb, 2003: Modeling the initial, fast sea-surface height decay of Agulhas Ring "Astrid." Deep-Sea Res. II, 50, 299-319.
14. Ganachaud, A., and C. Wunsch, 2000: Improved estimates of global ocean circulation, heat transport and mixing from hydrographic data. Nature, 408, 453-456.
15. Gordon, A., 1986: Interocean exchange of thermocline water. J. Geophys. Res., 91, 5037-5046.
16. Johnson, H., and D. Marshall, 2002a: Localization of abrupt change in the North Atlantic thermohaline circulation. Geophys. Res. Lett., 29, 1083, doi:10.1029/2001GL014140.
17. Johnson, H., and D. Marshall, 2002b: A theory for the surface Atlantic response to thermohaline variability. J. Phys. Oceanogr., 32, 1121-1132.
18. Kamenkovitch, V., Y. Leonov, D. Nechaev, D. Byrne, and A. Gordon, 1996: On the influence of bottom topography on the Agulhas eddy. J. Phys. Oceanogr., 26, 892-912.
19. Knorr, G., and G. Lohmann, 2003: Southern Ocean origin for the resumption of Atlantic thermohaline circulation during deglaciation. Nature, 424, 532-536.
20. Kowalik, Z., and T. Murty, 1993: Numerical Modelling of Ocean Dynamics. Advanced Series on Ocean Engineering, Vol. 5, World Scientific, 496 pp.
21. Liu, Z., L. Wa, and E. Baler, 1999: Rossby wave-coastal Kelvin wave interaction in the extratropics. Part I: Low-frequency adjustment in a closed basin. J. Phys. Oceanogr., 29, 2382-2404.
22. Longuet-Higgins, M., 1965: The response of a stratified ocean to stationary or moving wind-systems. Deep-Sea Res., 12, 923-973.
23. Lutjeharms, J., 1996: The exchange of water between the South Indian and South Atlantic Oceans. The South Atlantic: Present and Past Circulation, G. Wefer et al., Eds., Springer-Verlag, 125-162.
24. Mesinger, F., and A. Arakawa, 1976: Numerical methods used in atmospheric models. GARP Publications, World Meteorological Organization, 71 pp.
25. Nof, D., 1983: On the migration of isolated eddies with application to Gulf Stream rings. J. Mar. Res., 41, 399-425.
26. Peeters, F., R. Acheson, G. Brummer, W. De Ruijer, R. Schneider, G. Ganssen, E. Ufkes, and D, Kroon, 2004: Vigorous exchange between the Indian and Atlantic Oceans at the end of the past five glacial periods. Nature, 430, 661-665.
27. Primeau, F., 2002: Long Rossby wave basin-crossing time and the resonance of low-frequency basin modes. J. Phys. Oceanogr., 32, 2652-2665.
28. Rahmstorf, S., 1996: On the freshwater forcing and transport of the Atlantic thermohaline circulation. Climate Dyn., 12, 799-811.
29. Rahmstorf, S., and A. Ganopolsky, 1999: Long-term global warming scenarios computed with an efficient coupled climate model. Climatic Change, 43, 353-367.
30. Saenko, O., J. Gregory, A. Weaver, and M. Eby, 2002: Distinguishing the influence of beat, freshwater, and momentum fluxes on ocean circulation and climate. J. Climate, 15, 3686-3697.
31. Schmitz, W., Jr., 1995: On the interbasin-scale thermohaline circulation. Rev. Geophys., 33, 151-173.
32. Schouten, M., W. De Ruijter, P. J. Van Leeuwen, and J. Lutjeharms, 2000: Translation, decay and splitting of Agulhas rings in the southeastern Atlantic Ocean. J. Geophys. Res., 105, 21 913-21 925.
33. Tailleux, R., 2004: A WKB analysis of the surface signature and vertical structure of long extratropical baroclinic Rossby waves over topography. Ocean Modell., 6, 191-219.
34. Tailleux, R., and J. McWilliams, 2000: Acceleration, creation, and depletion of wind-driven, baroclinic Rossby waves over an ocean ridge. J. Phys. Oceanogr., 30, 2186-2213.
35. Tang, C., 1979: Development of radiation fields and baroclinic eddies in a β-plane. J. Fluid Mech., 93, 379-400.
36. Van Aken, H., A. Van Veldhoven, C. Veth, W. De Ruijter, P. J. Van Leeuwen, S. Drijfhout, C. Whittle, and M. Rouault, 2003: Observations of a young Agulhas ring, Astrid, during MARE in March 2000. Deep-Sea Res. II, 50, 167-195.
37. Wang, L., and C. Koblinsky, 1994: Influence of mid-ocean ridges on Rossby waves. J. Geophys. Res., 99, 25 143-25 153.
38. Weijer, W., W. De Ruijter, H. Dijkstra, and P. J. Van Leeuwen, 1999: Impact of interbasin exchange on the Atlantic overturning circulation. J. Phys. Oceanogr., 29, 2266-2284.
39. Weijer, W., W. De Ruijter, A. Sterl, and S. Drijfhout, 2002: Response of the Atlantic overturning circulation to South Atlantic sources of buoyancy. Global Planet. Change, 34, 293-311.