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Application of acoustic-Doppler current profiler and expendable bathythermograph measurements to the study of the velocity structure and transport of the Gulf StreamThe degree to which Acoustic-Doppler Current Profiler (ADCP) and expendable bathythermograph (XBT) data can provide quantitative measurements of the velocity structure and transport of the Gulf Stream is addressed. An algorithm is used to generate salinity from temperature and depth using an historical Temperature/Salinity relation for the NW Atlantic. Results have been simulated using CTD data and comparing real and pseudo salinity files. Errors are typically less than 2 dynamic cm for the upper 800 m out of a total signal of 80 cm (across the Gulf Stream). When combined with ADCP data for a near-surface reference velocity, transport errors in isopycnal layers are less than about 1 Sv (10 to the 6th power cu m/s), as is the difference in total transport for the upper 800 m between real and pseudo data. The method is capable of measuring the real variability of the Gulf Stream, and when combined with altimeter data, can provide estimates of the geoid slope with oceanic errors of a few parts in 10 to the 8th power over horizontal scales of 500 km.
Document ID
19880019221
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Joyce, T. M. (Woods Hole Oceanographic Inst. MA, United States)
Dunworth, J. A. (Woods Hole Oceanographic Inst. MA, United States)
Schubert, D. M. (Woods Hole Oceanographic Inst. MA, United States)
Stalcup, M. C. (Woods Hole Oceanographic Inst. MA, United States)
Barbour, R. L. (Woods Hole Oceanographic Inst. MA, United States)
Date Acquired
September 5, 2013
Publication Date
August 1, 1988
Subject Category
Oceanography
Report/Patent Number
NAS 1.26:183188
NASA-CR-183188
WHOI-88-42
Accession Number
88N28605
Funding Number(s)
CONTRACT_GRANT: NAGW-1026
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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