Accession Number : AD0776302

Title :   Estimating Boundary Layer Fluxes from Shipboard Measurements of Dissipations of Turbulent Kinetic Energy and Temperature Variance.

Descriptive Note : Master's thesis,


Personal Author(s) : Johnston,William Edward

Report Date : MAR 1974

Pagination or Media Count : 130

Abstract : Velocity and temperature fluctuation measurements were made over the open ocean from instruments mounted on the R/V ACANIA. These data were examined to determine the validity of present formulations and prediction techniques. Values of momentum flux, were inferred from the rate of dissipation of turbulent kinetic energy, epsilon. Dissipation values were obtained from spectral estimates and inner scale estimates. The momentum flux, computed from spectra, supported the constant-flux assumption for neutral conditions. For periods of instability, the stability corrections applied to the vertical variation of epsilon resulted in the proper adjustments toward the predicted slope. The shape of a spectrum of temperature fluctuations was in agreement with predictions. (Modified author abstract)

Descriptors :   *Marine atmospheres, *Turbulent boundary layer, Turbulence, Kinetic energy, Momentum transfer, Air water interactions, Theses

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE