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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 17, issue 7
Ann. Geophys., 17, 971–982, 1999
https://doi.org/10.1007/s00585-999-0971-y
© European Geosciences Union 1999
Ann. Geophys., 17, 971–982, 1999
https://doi.org/10.1007/s00585-999-0971-y
© European Geosciences Union 1999

  31 Jul 1999

31 Jul 1999

Passive tracers in a general circulation model of the Southern Ocean

I. G. Stevens and D. P. Stevens I. G. Stevens and D. P. Stevens
  • School of Mathematics, University of East Anglia, Norwich, NR4 7TJ, UK

Abstract. Passive tracers are used in an off-line version of the United Kingdom Fine Resolution Antarctic Model (FRAM) to highlight features of the circulation and provide information on the inter-ocean exchange of water masses. The use of passive tracers allows a picture to be built up of the deep circulation which is not readily apparent from examination of the velocity or density fields. Comparison of observations with FRAM results gives good agreement for many features of the Southern Ocean circulation. Tracer distributions are consistent with the concept of a global "conveyor belt" with a return path via the Agulhas retroflection region for the replenishment of North Atlantic Deep Water.

Key words. Oceanography: general (numerical modeling; water masses) · Oceanography: physical (general circulation)

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