We acknowledge the National Science Foundation (NSF) Office of Polar Programs (OPP) and Division of Ocean Sciences (OCE) for sponsoring the ADCP and XBT observing programs on the LMG and this research through Grants OPP-9816226/-0338103, OCE-0327544, OPP-0003618, and OCE 0549225. Additional support was provided by the Office of Science, U.S Department of Energy through Research Grant DE-FG02–05ER64119. The global POP simulation was carried out by Julie McClean and Matthew Maltrud (LANL) as part of a Department of Defense High Performance Computing Modernization Program (HPCMP) grand challenge grant at the Maui High Performance Computing Center (MHPCC). We are also grateful to the captain and crew of the ARSV Laurence M. Gould and to Raytheon Polar Services Corporation for their excellent technical and logistical support on the cruises. Eric Firing, Jules Hummon, and Sharon Escher have made invaluable contributions to the ADCP data collection, processing, and editing. Conversations with Sarah Gille, Paola Cessi, Alexa Griesel, Jeff Polton, and Chris Wilson have provided helpful additional insight into the problem.
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