Lowpass Vector Field

Surface Divergence of the Lowpass Velocity Field

The surface divergence is a measure of water motion toward or away from a particular point on the ocean surface. Positive values represent divergence and negative values represent convergence.

Surface Vorticity of the Lowpass Velocity Field

Surface vorticity is the "spin" the ocean surface feels based on the surrounding currents. Counterclockwise rotation is positive and clockwise rotation is negative.