Absolute geostrophic crosstrack speed on nearly-parallel tracks Gizo-Tagula

Plots on along-track distance along the two nearly-parallel tracks Gizo-Tagula.

Top: ug(rel 700m);
Middle: vertical-average relative ug (black),
            absolute crosstrack speed from glider motion (red),
            implied reference level speed (green);
Bottom: absolute crosstrack geostrophic speed.

Mission 6 (red arrows at right, left plot below) was launched on 4 July 2008;
Mission 7 (purple arrows at right, right plot below) on 10 Nov 2008.

The sign convention is that positive speeds are to the right of the track.
For these SSW tracks out of Gizo, positive values (red) are to the west.

For best viewing, open the browser to the width of both plots below.