nerc.ac.uk

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.; 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. 10.1016/j.dsr.2005.12.007

Full text not available from this repository.

Abstract/Summary

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: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.dsr.2005.12.007
ISSN: 0967-0637
Additional Keywords: geostrophic transport; time series; bottom pressure; density; Meridional Overturning Circulation
Date made live: 19 Feb 2007 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/144194

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...