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Proceedings of OceanObs'09: Sustained Ocean Observations and Information for Society

COMMUNITY WHITE PAPER10.5270/OceanObs09.cwp.37

Interocean Exchange of Thermocline Water: Indonesian Throughflow; "Tassie" Leakage; Agulhas Leakage

A.L. Gordon(1), J. Sprintall(2), S Wijffels(3), Dwi Susanto(1), R. Molcard(4), H. M. van Aken(5), A.L. Ffield(6), W. P. R. de Ruijter(7), J. R. E. Lutjeharms(8), S. Speich(9), L. Beal(10)

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Interocean exchange of thermocline water is of central importance to the mass, heat and freshwater budgets of the major ocean basins. Fluctuations of interocean exchange may be expected to affect the global climate system by altering sea-air heat flux and associated large scale ocean overturning. Interocean exchange of thermocline waters include: Agulhas leakage which injects Indian Ocean water into the Atlantic Ocean; and the transfer of Pacific water into the Indian Ocean by way of the Indonesian Throughflow and along a route south of Australia, the Tassie Leakage. Observations and modeling work of the last few decades have informed us of the nature these key interocean exchanges and offer concepts for cost-effective approaches for sustained observing systems.

1Lamont-Doherty Earth Observatory, PO Box 1000; Palisades, New York 10964 USA
2Scripps Institute of Oceanography, 9500 Gilman Drive, San Diego, La Jolla, CA 92093, USA
3CSIRO (Commonwealth Scientific and Industrial Research Organisation), Locked Bag 10, Clayton South VIC 3169, Australia
4LOCEAN-IPSL (Laboratoire d'Océanographie et du Climat: Expérimentations Et Approches Numériques - Institut Pierre Simon Laplace), 4, place Jussieu, 75252 Paris, Cedex 05, France
5NIOZ (National Oceanographic Institute of the Netherlands/Koninklijk Nederlands Instituut voor Zeeonderzoek), Landsdiep 4, 1797 SZ 't Horntje (Texel), The Netherlands
6Earth Space Research, 2101 Fourth Ave., Suite 1310, Seattle WA 98121 USA
7Institute for Marine and Atmospheric research Utrecht (IMAU), Utrecht University, Princetonplein 5, 3584 CC Utrecht, P.O. Box 80.005,3508 TA Utrecht, The Netherlands
8University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
9Laboratoire de Physique des Océans (LPO), 6, avenue le Gorgeu, CS 93837, 29285 Brest Cedex, France
10RSMAS-UM (Rosenstiel School of Marine and Atmospheric Science0University of Miami), 4600 Rickenbacker Causeway, Miami, FL 33149 USA

Correspondence should be addressed to E-mail: agordon@ldeo.columbia.edu

This paper shall be cited as:

Gordon, A. & Co-Authors (2010). "Interocean Exchange of Thermocline Water: Indonesian Throughflow; "Tassie" Leakage; Agulhas Leakage" in Proceedings of OceanObs’09: Sustained Ocean Observations and Information for Society (Vol. 2), Venice, Italy, 21-25 September 2009, Hall, J., Harrison, D.E. & Stammer, D., Eds., ESA Publication WPP-306, doi:10.5270/OceanObs09.cwp.37

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