Passive tracers in a general circulation model of the Southern Ocean

• Main Authors: Stevens, I. G., Stevens, D. P.
• Other Authors: School of Mathematics, University of East Anglia Norwich (UEA)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 1999
• Subjects: [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere; [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; Antarctic; Southern Ocean; Antarc*; North Atlantic Deep Water; North Atlantic
• Online Access: https://hal.science/hal-00316635; https://hal.science/hal-00316635/document; https://hal.science/hal-00316635/file/angeo-17-971-1999.pdf

International audience 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.