The relationship between ocean surface turbulence and air-sea gas transfer velocity: An in-situ evaluation

Esters, L; Landwehr, S; Sutherland, G; Bell, TG; Saltzman, ES; Christensen, KH; Miller, SD; Ward, B. 2016 The relationship between ocean surface turbulence and air-sea gas transfer velocity: An in-situ evaluation. IOP Publishing, 012005.

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Official URL: http://dx.doi.org/10.1088/1755-1315/35/1/012005

Abstract/Summary

Although the air-sea gas transfer velocity k is usually parameterized with wind speed, the so-called small-eddy model suggests a relationship between k and ocean surface dissipation of turbulent kinetic energy . Laboratory and field measurements of k and have shown that this model holds in various ecosystems. Here, field observations are presented supporting the theoretical model in the open ocean. These observations are based on measurements from the Air-Sea Interaction Profiler and eddy covariance CO2 and DMS air-sea flux data collected during the Knorr11 cruise. We show that the model results can be improved when applying a variable Schmidt number exponent compared to a commonly used constant value of 1/2. Scaling to the viscous sublayer allows us to investigate the model at different depths and to expand its applicability for more extensive data sets.

Item Type: Publication - Book
Subjects: Atmospheric Sciences
Meteorology and Climatology
Oceanography
Divisions: Plymouth Marine Laboratory > Science Areas > Marine Biochemistry and Observations
Depositing User: Dr Thomas George Bell
Date made live: 25 Nov 2016 12:23
Last Modified: 06 Jun 2017 16:17
URI: http://plymsea.ac.uk/id/eprint/7297

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