Article
 

Surface stress in offshore flow and quasi-frictional decoupling

Public Deposited

Contenu téléchargeable

Télécharger le fichier PDF
https://ir.library.oregonstate.edu/concern/articles/8w32r697s

Descriptions

Attribute NameValues
Creator
Abstract
  • Aircraft data collected at approximately 15 m above the sea surface in the coastal zone are analyzed to examine the spatial distribution of surface stress. Advection of stronger turbulence from land dominates the near-surface turbulence for the first few kilometers offshore. With offshore flow of warm air over cold water, strong stratification leads to very small surface stress. Because the stability restricts the momentum transfer to the waves, the aerodynamic surface roughness decreases to very small values, which in turn decreases atmospheric mixing. The redevelopment of the boundary layer farther downstream is examined. Computation of fluxes from observations for stable cases is difficult due to a variety of errors including large random flux errors, possible instrumental loss of small-scale flux, difference between the surface flux and that at the observational level, and inadvertent capture of mesoscale motions in the computed turbulent fluctuations. Although the errors appear to be substantial, the aircraft momentum fluxes compare favorably with those from sonic anemometers on two buoys and a tower at the end of a 570-m pier, even with near collapse of the turbulence
Resource Type
DOI
Date Available
Date Issued
Citation
  • Mahrt, L., Vickers, D., Sun, J., Crawford, T. L., Crescenti, G., & Frederickson, P. (2001). Surface stress in offshore flow and quasi-frictional decoupling. Journal of Geophysical Research, 106(D18), 20629-20639.
Journal Title
Journal Volume
  • 106
Déclaration de droits
Publisher
Language
Replaces

Des relations

Parents:

This work has no parents.

Articles

La vignette Titre Date de téléchargement Visibilité actes
file details Mahrt_et_al_JGR_2001.pdf 2017-07-24 Public Télécharger