Tasman leakage: a new route in the global ocean conveyor belt

International audience The existence of a new route that draws relatively cold waters from the Pacific Ocean to the North Atlantic via the Tasman outflow is presented. The new route materialises with comparable magnitude and characteristics in three independent numerical realisations of the global o...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Speich, Sabrina, Blanke, Bruno, De Vries, Pedro, Drijfhout, Sybren, Döös, Kristofer, Ganachaud, Alexandre, Marsh, Robert
Other Authors: Laboratoire de physique des océans (LPO), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), Royal Netherlands Meteorological Institute (KNMI), Department of Meteorology Stockholm (MISU), Stockholm University, Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Southampton Oceanographic center (SOC), University of Southampton
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2002
Subjects:
Online Access:https://hal.archives-ouvertes.fr/hal-00172866
https://hal.archives-ouvertes.fr/hal-00172866/document
https://hal.archives-ouvertes.fr/hal-00172866/file/2001GL014586.pdf
https://doi.org/10.1029/2001GL014586
Description
Summary:International audience The existence of a new route that draws relatively cold waters from the Pacific Ocean to the North Atlantic via the Tasman outflow is presented. The new route materialises with comparable magnitude and characteristics in three independent numerical realisations of the global ocean circulation. Its realism is supported by hydrographic data interpolated via an inverse model. The ''Tasman leakage'' constitutes a sizeable component of the upper branch of the global conveyor belt and represents an extension to the prevailing views that hitherto emphasised the routes via the Drake Passage and the Indonesian Throughflow [Gordon, 1986].