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Impact of wave breaking on upper-ocean turbulence
Wuhan Univ Technol, Sch Nav, Wuhan, Peoples R China.; Hubei Key Lab Inland Shipping Technol, Wuhan, Peoples R China.; Natl Engn Res Ctr Water Transport Safety, Wuhan, Peoples R China..
Wuhan Univ Technol, Sch Nav, Wuhan, Peoples R China.; Hubei Key Lab Inland Shipping Technol, Wuhan, Peoples R China.; Natl Engn Res Ctr Water Transport Safety, Wuhan, Peoples R China..
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
Wuhan Univ Technol, Sch Nav, Wuhan, Peoples R China.; Hubei Key Lab Inland Shipping Technol, Wuhan, Peoples R China.; Natl Engn Res Ctr Water Transport Safety, Wuhan, Peoples R China..
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2017 (English)In: Journal of Geophysical Research - Oceans, ISSN 2169-9275, E-ISSN 2169-9291, Vol. 122, no 2, 1513-1528 p.Article in journal (Refereed) Published
Abstract [en]

Previous studies have demonstrated that surface wave breaking can impact upper-ocean turbulence through wave-breaking-induced turbulence kinetic energy (TKE) flux and momentum flux. Wave-breaking-induced momentum flux decays approximately exponentially with depth, and the decay exponent depends on both the wind speed and wave age. With increasing wave age, the decay speed of wave-breaking-induced momentum flux first decreases, reaching a minimum around a wave age of 16, and then increases. In this study, a wave-breaking-induced momentum flux parameterization was proposed based on wave age and wind-speed dependence. The new proposed parameterization was introduced into a one-dimensional (1-D) ocean model along with a wave-age-dependent wave-breaking-induced TKE flux parameterization. The simulation results showed that the wave-breaking impact on the ocean mainly affected the upper-ocean layer. Adding the wave-age impact to the wave-breaking-induced TKE flux and momentum flux improved the 1-D model performance concerning the sea temperature. Moreover, the wave-breaking-induced momentum flux had a larger impact on the simulation results than the wave-breaking-induced TKE flux.

Place, publisher, year, edition, pages
2017. Vol. 122, no 2, 1513-1528 p.
National Category
Oceanography, Hydrology, Water Resources
Identifiers
URN: urn:nbn:se:uu:diva-318885DOI: 10.1002/2016JC012654ISI: 000398063100043OAI: oai:DiVA.org:uu-318885DiVA: diva2:1085542
Funder
Swedish Research Council
Available from: 2017-03-29 Created: 2017-03-29 Last updated: 2017-04-21Bibliographically approved

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