Convection: a neglected pathway for downward transfer of wind energy in the oceanic mixed layer

Yu ZHANG; Wei WANG

doi:10.1007/s00343-018-7081-1

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Convection: a neglected pathway for downward transfer of wind energy in the oceanic mixed layer

Physics | Updated：2023-05-19

- Convection: a neglected pathway for downward transfer of wind energy in the oceanic mixed layer
- Chinese Journal of Oceanology and Limnology Vol. 36, Issue 4, Pages: 1189-1197(2018)
- Affiliations：
  
  Physical Oceanography Laboratory/CIMST, Ocean University of China and Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
- Author bio：
  
  ZHANG Yu, yuz@ouc.edu.cn
- Funds：
- DOI：10.1007/s00343-018-7081-1
  CLC：
- Received：18 March 2017，
  
  Accepted：12 May 2017，
  
  Online First：19 June 2017，
  
  Published：2018-07
- Accepted：
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Yu ZHANG, Wei WANG. Convection: a neglected pathway for downward transfer of wind energy in the oceanic mixed layer[J]. Chinese Journal of Oceanology and Limnology, 2018, 36(4): 1189-1197.
DOI：

Yu ZHANG, Wei WANG. Convection: a neglected pathway for downward transfer of wind energy in the oceanic mixed layer[J]. Chinese Journal of Oceanology and Limnology, 2018, 36(4): 1189-1197. DOI： 10.1007/s00343-018-7081-1.

摘要

Abstract

Upper-ocean turbulent mixing plays a vital role in mediating air-sea fluxes and determining mixed-layer properties

but its energy source

especially that near the base of the mixed layer

remains unclear. Here we report a potentially significant yet rarely discussed pathway to turbulent mixing in the convective mixed layer. During convection

as surface fluid drops rapidly in the form of convective plumes

intense turbulence kinetic energy (TKE) generated via surface processes such as wave breaking is advected downward

enhancing TKE and mixing through the layer. The related power

when integrated over the global ocean except near the surface where the direct effect of breaking waves dominates

is estimated at

(1)TW

comparable to that required by maintaining the Meridional Overturning Circulation (MOC). The mechanism in question therefore deserves greater research attention

especially in view of the potential significance of its proper representation in climate models.

关键词

Keywords

references

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