Accession Number : ADA331896

Title :   The Impact of Sea-Spray Droplets on the Surface Energy Budget Under High Wind Speeds Over Waves

Descriptive Note : Final rept. 15 Oct 94-14 Oct 96

Corporate Author : WOODS HOLE OCEANOGRAPHIC INSTITUTION MA DEPT OF APPLIED OCEAN PHYSICS AND ENGINEERING

Personal Author(s) : Edson, James B.

PDF Url : ADA331896

Report Date : 01 NOV 1997

Pagination or Media Count : 37

Abstract : The project involved an investigation of the effects of evaporating sea-spray under high wind conditions. These investigations were accomplished using a interactive Eulerian-Lagrangian model developed by the PI. The interactive model was validated using data collected during the 1988 CLUSE program. This work has demonstrated that the combined model accurately simulates the turbulent transport of evaporating droplets. In additions, this paper advanced the state-of-the-art in droplet research by demonstrating that the potential for substantial modification of the surface energy budget exists if the presence of waves acts to eject the droplets higher and/or disperse the droplets more efficiently. The model predicted that the contribution of the sea spray on the latent heat flux is at least 10% of the total under high wind speed conditions. The second part of this investigation has involved modifications to the Eulerian portion of the code to include a wavy lower boundary. The validation of this model is being accomplished through comparisons with an open ocean data set collected aboard the R/P FLIP during the 1995 Marine Boundary Layers Experiment. These observations are now being used to improve the boundary conditions and closure schemes to simulate the flow over waves as realistically as possible.

Descriptors :   *SURFACE ENERGY, ATMOSPHERIC MOTION, LATENT HEAT, DROPS, WIND VELOCITY, EULER EQUATIONS, AIR WATER INTERACTIONS, HEAT FLUX, BOUNDARY LAYER FLOW, LAGRANGIAN FUNCTIONS.

Subject Categories : Meteorology
      Physical and Dynamic Oceanography
      Numerical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE