Numerical drifters are deployed at the space/time location of
the dye release. The upward-pointing triangle is at the surface;
the
downward-pointing triangle is at 15m. The grey points indicate
the geographic positions of the dye observations. As the ship
occupies
the cruise track, passive particles tagged with the observed dye
concentration are injected into the model solution. At the end
of
the survey, the collection of particles represents an estimate of the
synoptic distribution of observations based on the modeled
velocities, from which the tracer distribution can be mapped.
Note
that the animation actually continues well beyond the end of the
survey.
For more information, see
Lynch, D.R, Naimie, C.E., Ip, J.T., Lewis, C.V., Werner, F.E., Luettich,
R., Blanton, B.O., Quinlan, J., McGillicuddy, D.J., Ledwell, J.R.,
Churchill, J., Kosnyrev, V.K., Davis, C.S., Gallager, S.M., Ashjian,
C.J., Lough, R.G., Manning, J., Flagg, C.N., Hannah, C.G. and R.C.
Groman. Real-time data assimilative modeling on Georges Bank.
Submitted, Oceanography.
Also see: Globec
RTDA Home Page .
Last updated:
12/12/2000
Contact: dmcgillicuddy@whoi.edu