Research Projects: Past and Present

Dr. Mark A. Bourassa, COAPS/FSU, Tallahassee FL 32306-3041

Calibration/Validation of the Scatterometer wind algorithms. In-situ ship-board wind observations are compared to SeaWinds, NSCAT and ERS winds.

Examination of the Influence of Hurricane Marco on Gap flow through the Chivela Pass . Typically, the gap flow turns to the right as would be expected for inertial flows. Hurricane Marko causes the winds to turn to the left, through the Gulf of Papagayo, over Nicaragua's Lake District, and into the Caribbean Sea.

Vertical transport of momentum in the aqueous boundary-layer. The current profile in the upper two meters of water is found to be well characeterized by a Charnock-like profile. This result indicates that the dominant mechanism for the vertical transport of horizontal momentum is related to gravity waves.

A flux parameterization including the effects of capillary waves and sea state. A model for significant wave height is coupled with a surface flux model to demonstrate the importance of capillary waves on fluxes and wave age.

A sea state parameterization for low winds and a non-arbitrary wave age. A model for significant wave height is coupled with a surface flux model to remove the (common) assumption of local equilibrium.

The use of significant wave height to improve the accuracy of wind derived stress. Satellite derived wave heights can be used in conjunction with observed winds to remove the assumption of wind-wave local equilibrium.

Wind and Flux Fields for Air-Sea Interaction. Accurate and internally consistent forcing fields are needed for studies on a wide range of temporal and spatial scales. Various techniques and observation sets are used in developing these fields. We are in process of improving our variational technique.

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Last Updated May 5, 1998