The role of freshwater fluxes in the thermohaline circulation: Insights from a laboratory analogue

Deep-Sea Research Part I: Oceanographic Research Papers

Volumn 54, Issue 1, 2007, Pages 1-21

  Mullarney, Julia C ^a   Griffiths, Ross W ^b   Hughes, Graham O ^b  

^a DALHOUSIE UNIVERSITY   (Canada)

^b AUSTRALIAN NATIONAL UNIVERSITY   (Australia)

Author keywords

Freshwater flux; Halocline catastrophe; Horizontal convection; Meridional overturning; Oscillations; Thermohaline circulation

Indexed keywords

BOUNDARY LAYERS; BUOYANCY; COOLING; FLUXES; GEOLOGIC MODELS; HEATING; HYDROLOGY;

FRESHWATER FLUX; HORIZONTAL CONVECTION; MERIDIONAL OVERTURNING; THERMOHALINE CIRCULATION;

OCEANOGRAPHY;

BOTTOM WATER; BUOYANCY FORCING; DEEP WATER; LABORATORY METHOD; MERIDIONAL CIRCULATION; SALINE INTRUSION; THERMOHALINE CIRCULATION;

EID: 33845434945     PISSN: 09670637     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.dsr.2006.10.001     Document Type: Article

References (44)

1. Broecker W.S. Massive iceberg discharges as triggers for global climate-change. Nature 372 (1994) 421-424
2. Broecker W.S., Peteet D.M., and Rind D. Does the ocean-atmosphere system have more than one stable mode of operation?. Nature 315 (1985) 21-26
3. Broecker W.S., Peng T.-H., Jouzel J., and Russell G. The magnitude of global fresh-water transports of importance to ocean circulation. Climate Dynamics 4 (1990) 73-79
4. Bryan F. High-latitude salinity effects and interhemispheric thermohaline circulations. Nature 323 (1986) 301-304
5. Cenedese, C., Dalziel, S.B., 1998. Concentration and depth field determined by the light transmitted through a dyed solution. In: Carlomagno, Grant (Eds.), Eighth International Symposium on Flow Visualization, Sorrento, p. 61.
6. Colin De Verdiére, A.C., Jelloul, B.M., Sévellec, F., 2006. On the bifurcation structure of thermohaline millennial oscillations. Journal of Climate, in press.
7. Dansgaard W., Johnsen S.J., Clausen H.B., Dahljensen D., Gundestrup N.S., Hammer C.U., Hvidberg C.S., Steffensen J.P., Sveinbjornsdottir A.E., Jouzel J., and Bond G. Evidence for general instability of past climate from a 250-kyr ice-core record. Nature 364 (1993) 218-220
8. Ganachaud A., and Wunsch C. Large-scale ocean heat and freshwater transports during the world ocean circulation experiment. Journal of Climate 16 4 (2003) 696-705
9. Ganopolski A., and Rahmstorf S. Rapid changes of glacial climate simulated in a coupled climate model. Nature 409 (2001) 153-158
10. Gill A.E. Atmosphere-Ocean Dynamics. International Geophysics Series vol. 30 (1982), Academic Press, New York
11. Houghton J.T., Meira Filho L.G., Callander B.A., Harris N., Kattenberg A., and Maskell K. Climate Change 1995: the Science of Climate Change (1996), Cambridge University Press, Cambridge
12. Huck T., Colin De Verdiére A.C., and Weaver A.J. Interdecadal variability of the thermohaline circulation in box-ocean models forced by fixed surface fluxes. Journal of Physical Oceanography 29 (1999) 865-892
13. Hughes G.O., and Griffiths R.W. A simple convective model of the global overturning circulation, including effects of entrainment into sinking regions. Ocean Modelling 12 (2006) 46-79 10.1016/j.ocemod.2005.04.001
14. Hughes, G.O., Griffiths, R.W., Mullarney, J.C., Peterson, W., 2006. A theoretical model for horizontal convection at large Rayleigh number. Journal of Fluid Mechanics, in press.
15. Macdonald A.M. The global ocean circulation: a hydrographic estimate and regional analysis. Progress in Oceanography 41 (1998) 281-382
16. Manabe S., and Stouffer R.J. Simulation of abrupt climate change induced by freshwater input to the North Atlantic Ocean. Nature 378 (1995) 165-167
17. Marotzke J., and Willebrand J. Multiple equilibria of the global thermohaline circulation. Journal of Physical Oceanography 21 (1991) 1372-1385
18. Mullarney, J.C., 2004. Thermal and thermohaline convection models for the meridional overturning circulation of the oceans. Ph.D. Thesis, Australian National University.
19. Mullarney J.C., Griffiths R.W., and Hughes G.O. Convection driven by differential heating at a horizontal boundary. Journal of Fluid Mechanics 516 (2004) 181-209
20. Open University Oceanography Course Team. Ocean Circulation. first ed (1989), Pergamon Press, The Open University, Oxford
21. Rahmstorf S. Bifurcations of the Atlantic thermohaline circulation in response to changes in the hydrological cycle. Nature 378 (1995) 145-149
22. Rahmstorf S. On the freshwater forcing and transport of the Atlantic thermohaline circulation. Climate Dynamics 12 (1996) 799-811
23. Rooth C. Hydrology and ocean circulation. Progress in Oceanography 11 (1982) 131-149
24. Rossby H.T. On thermal convection driven by non-uniform heating from below: an experimental study. Deep-Sea Research 12 (1965) 9-16
25. Rossby T. Numerical experiments with a fluid heated non-uniformly from below. Tellus A 50A (1998) 242-257
26. Stocker T.F. Past and future reorganizations in the climate system. Quaternary Science Reviews 19 (2000) 301-319
27. Stocker T.F., and Wright D.G. Rapid transitions of the oceans deep circulation induced by changes in surface-water fluxes. Nature 351 (1991) 729-732
28. Stommel H. Thermohaline convection with two stable regimes of flow. Tellus 13 (1961) 224-230
29. Stommel H. On the smallness of sinking regions in the ocean. Proceedings of the National Academy of Sciences, Washington 48 (1962) 766-772
30. Taylor J. The fluxes across a diffusive interface at low values of the density ratio. Deep-Sea Research 35 (1988) 555-567
31. Te Raa L.A., and Dijkstra H.A. Instability of the thermohaline ocean circulation on interdecadal timescales. Journal of Physical Oceanography 32 (2002) 138-160
32. Turner J.S. The coupled turbulent transports of salt and heat across a sharp density interface. International Journal of Heat and Mass Transfer 8 (1965) 759-767
33. Tziperman E. Inherently unstable climate behaviour due to weak thermohaline ocean circulation. Nature 386 (1997) 592-595
34. Tziperman E. Proximity of the present-day thermohaline circulation to an instability threshold. Journal of Physical Oceanography 30 (2000) 90-104
35. Tziperman E., Toggweiler J.R., Feliks Y., and Bryan K. Instability of the thermohaline circulation with respect to mixed boundary-conditions-is it really a problem for realistic models?. Journal of Physical Oceanography 24 (1994) 217-232
36. Walin G. The thermohaline circulation and the control of ice ages. Palaeogeography, Palaeoclimatology, Palaeoecology 50 (1985) 323-332
37. Weaver A.J., and Sarachik E.S. The role of mixed boundary-conditions in numerical-models of the oceans climate. Journal of Physical Oceanography 21 (1991) 1470-1493
38. Weaver A.J., Sarachik E.S., and Marotze J. Fresh-water flux forcing of decadal and interdecadal oceanic variability. Nature 353 (1991) 836-838
39. Weijer W., and Dijkstra H.A. Multiple oscillatory modes of the global ocean circulation. Journal of Physical Oceanography 33 (2003) 2197-2213
40. Whitehead J.A. Multiple states in doubly driven flow. Physica D 97 (1996) 311-321
41. Whitehead J.A., and Bradley K. Laboratory studies of stratified convection with multiple states. Ocean Modelling 11 (2006)
42. Whitehead J.A., Timmermans M.L.E., Lawson W.G., Bulgakov S.N., Zatarain A.M., Medina J.F.A., and Salzig J. Laboratory studies of thermally and/or salinity driven flows with partial mixing-1. Stommel transitions and multiple flow states. Journal of Geophysical Research Oceans 108 (2003) 10.1029/2001JC/000902
43. Whitehead J.A., TeRaa L., Tozuka T., Keller J., and Bradley K. Laboratory observations and simple models of slow oscillations in cooled salt-stratified bodies. Tellus A 57 (2005)
44. Winton M., and Sarachik E.S. Thermohaline oscillations induced by strong steady salinity forcing of ocean general-circulation models. Journal of Physical Oceanography 23 (1993) 1389-1410