In:
Journal of Geophysical Research: Oceans, American Geophysical Union (AGU), Vol. 98, No. C11 ( 1993-11-15), p. 20237-20248
Abstract:
A gas exchange experiment was performed on Georges Bank using deliberate tracers sulfur hexafluoride (SF 6 ) and helium 3 ( 3 He). The concentrations of the tracers were measured in the water column over a period of 10 days. During this time the patch grew from an 8‐km‐long injection streak to an area of about 500 km 2 . The gas transfer velocity was determined from the change in the ratio of the tracers over time scaled to the ratio of their Schmidt numbers. A near‐linear relationship between gas exchange and wind speed was observed based on four experimental points covering a wind speed range from 3 to 11 m/s. The results fall in the upper part of the range of gas transfer‐wind speed relationships developed to date. Wind speeds during the experiment obtained from anemometers on the ship, on a free floating drifter, and on a fixed mooring showed significant differences. With the ability to measure gas transfer velocities over the ocean on timescales of several days, accurate wind speed/stress measurements are imperative to obtain a robust relationship between gas transfer and wind speed.
Type of Medium:
Online Resource
ISSN:
0148-0227
Language:
English
Publisher:
American Geophysical Union (AGU)
Publication Date:
1993
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