The main objective of this effort is to develop a scheme for obtaining direct, physically-based estimates of the friction velocity vector at the ocean surface from space-borne scatterometer measurements, and to apply this technique under high wind conditions.  A secondary objective is to use this technique as a tool for evaluating different two-dimensional ocean wave spectral models and directional spreading functions.  

A. Geophysical Model Function Development

B. Direct Estimation of Friction Velocity

C. Wind Vector and Friction Velocity Estimation Under Wind Conditions

D. Upwind/Downwind Asymmetry