The origin of Intermediate and Subpolar Mode Waters crossing the Atlantic equator in OCCAM
Article first published online: 17 MAR 2005
Copyright 2005 by the American Geophysical Union.
Geophysical Research Letters
Volume 32, Issue 6, March 2005
How to Cite
2005), The origin of Intermediate and Subpolar Mode Waters crossing the Atlantic equator in OCCAM, Geophys. Res. Lett., 32, L06602, doi:10.1029/2004GL021851., , and (
- Issue published online: 17 MAR 2005
- Article first published online: 17 MAR 2005
- Manuscript Accepted: 23 FEB 2005
- Manuscript Received: 27 OCT 2004
 The origin of the intermediate waters that cross the equatorial Atlantic as part of the return flow for North Atlantic Deep Water was studied in a high resolution global ocean model using a Lagrangian particle following technique. Most of these waters are subducted in the southeast Indian Ocean. Less than twenty percent comes directly from Drake Passage without looping into the Indian Ocean; the majority being provided by Agulhas leakage. Most of the intermediate waters that subduct in the South Atlantic do not follow the South Atlantic/Indian Ocean supergyre, but remain within the Antarctic Circumpolar Current, and gradually transform into Circumpolar Deep Water by diapycnal mixing.