Articles | Volume 13, issue 4
https://doi.org/10.5194/gmd-13-2031-2020
https://doi.org/10.5194/gmd-13-2031-2020
Development and technical paper
 | 
22 Apr 2020
Development and technical paper |  | 22 Apr 2020

Tracking water masses using passive-tracer transport in NEMO v3.4 with NEMOTAM: application to North Atlantic Deep Water and North Atlantic Subtropical Mode Water

Dafydd Stephenson, Simon A. Müller, and Florian Sévellec

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Cited articles

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Banks, H. T. and Gregory, J. M.: Mechanisms of ocean heat uptake in a coupled climate model and the implications for tracer based predictions of ocean heat uptake, Geophys. Res. Lett., 33, L07608, https://doi.org/10.1029/2005GL0253522006. a
Blanke, B. and Raynaud, S.: Kinematics of the Pacific equatorial undercurrent: An Eulerian and Lagrangian approach from GCM results, J. Phys. Oceanogr., 27, 1038–1053, 1997. a
Bower, A., Lozier, S., and Gary, S.: Export of Labrador Sea water from the subpolar North Atlantic: a Lagrangian perspective, Deep-Sea Res. Pt. II, 58, 1798–1818, 2011. a, b
Bower, A., Lozier, S., Biastoch, A., Drouin, K., Foukal, N., Furey, H., Lankhorst, M., Rühs, S., and Zou, S.: Lagrangian Views of the Pathways of the Atlantic Meridional Overturning Circulation, J. Geophys. Res.-Oceans, 124, 5313–5335, https://doi.org/10.1029/2019JC015014, 2019. a
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Different water types are created at the sea surface with a signature based on the local conditions of the atmosphere. They then take these conditions with them into the deeper ocean, and so their journey is an important climate process to understand. In this study, we modify and repurpose a specialised model which simulates the ocean forward and backward in time to determine where new ocean water goes, where at the surface existing water comes from, and how old it is, by tracking it as a dye.