Journal
JOURNAL OF PHYSICAL OCEANOGRAPHY
Volume 45, Issue 1, Pages 84-103Publisher
AMER METEOROLOGICAL SOC
DOI: 10.1175/JPO-D-14-0046.1
Keywords
-
Categories
Funding
- National Science Foundation [OCE0850551, OCE0934580]
- Office of Naval Research [N00014-08-1-0575]
- HPC resources from the Department of Defense High Performance Computing Modernization Program
- Directorate For Geosciences [0934737] Funding Source: National Science Foundation
- Division Of Ocean Sciences [0934580] Funding Source: National Science Foundation
Ask authors/readers for more resources
A prior second-moment closure (SMC) model of Langmuir turbulence in the upper ocean is modified by introduction of inhomogeneous pressure-strain rate and pressure-scalar gradient closures that are similar to the high Reynolds number, near-wall treatments for solid wall boundaries. This repairs several near-surface defects in the algebraic Reynolds stress model (ARSM) of the prior SMC by redirecting Craik-Leibovich (CL) vortex force production of turbulent kinetic energy out of the surface-normal vertical component and into a horizontal one, with an associated reduction in near-surface CL production of vertical momentum flux. A surface-proximity function introduces a new closure parameter that is tuned to previous results from large-eddy simulations (LES), and a numerical SMC model based on stability functions from the new ARSM produces improved comparisons with mean profiles of momentum and TKE components from steady-state LES results forced by aligned wind and waves. An examination of higher-order quasi-homogeneous closures and a numerical simulation of Langmuir turbulence away from the boundaries both show the near-surface inhomogeneous closure to be both necessary for consistency and preferable for simplicity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available