Monitoring the integrated deep meridional flow in the tropical North Atlantic: long-term performance of a geostrophic array
Kanzow, T., Send, U., Zenk, W., Chave, A.D. and Rhein, M. (2006) Monitoring the integrated deep meridional flow in the tropical North Atlantic: long-term performance of a geostrophic array. Deep-Sea Research I, 53, (3), 528-546. (doi:10.1016/j.dsr.2005.12.007).
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Description/Abstract
As a component of the meridional overturning variability experiment in the tropical North Atlantic, a four-year-long time series of meridional transport of North Atlantic deep water has been obtained from moored end point measurements of density and bottom pressure. This study presents a quality assessment of the measurement elements. Rigorous pre- and post- deployment in situ calibration of the density sensors and subsequent data processing establish an accuracy of O(1.5 Sv) in internal transport in the 1200–5000 dbar range at subinertial time scales. A similar accuracy is reached in the bottom pressure-derived external transport fluctuations. However, for pressure, variability with periods longer than a deployment's duration (presently about one year) is not measurable. This effect is demonstrated using numerical simulations and a possible solution for detecting long-term external transport changes is presented.
| Item Type: | Article |
|---|---|
| ISSNs: | 0967-0637 (print) |
| Related URLs: | |
| Keywords: | geostrophic transport; time series; bottom pressure; density; Meridional Overturning Circulation |
| Subjects: | G Geography. Anthropology. Recreation > GC Oceanography |
| Divisions: | University Structure - Pre August 2011 > National Oceanography Centre (NERC) |
| Item ID: | 44194 |
| Date Deposited: | 19 Feb 2007 |
| Last Modified: | 12 Jul 2012 12:31 |
| Contributors: | Kanzow, T. (Author) Send, U. (Author) Zenk, W. (Author) Chave, A.D. (Author) Rhein, M. (Author) |
| Date: | 2006 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/44194 |
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