Publication Date:
2022-05-26
Description:
We have addressed the 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. An algorithm has been 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 rn 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 (106 rn3 /s), as is the
difference in total transport for the upper 800 rn 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 108 over horizontal scales of
500 krn .
Description:
Funding was provided by the Ocean Processes Branch of the National
Aeronautics and Space Administration under grant Number NAGW 1026.
Keywords:
Endeavor (Ship: 1976-) Cruise EN86
;
Endeavor (Ship: 1976-) Cruise EN88
;
Oceanography
;
Acoustic imaging
Repository Name:
Woods Hole Open Access Server
Type:
Technical Report
Format:
application/pdf
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