Ray:

I ran the tiegcm station processor for the Ed Sz study, plotting
un,vn,ui,vi,wi (as in the timesgcm run), calculating the ion drifts
from the electric potiential on the tiegcm histories TETWS1-3 (hourly).
We were planning to send these plots to Ed along with the timesgcm
drifts, calculated with and without efield for comparison between the
two models.

The neutral winds are comparable, however, the two sets
of drifts are not very comparable: the tiegcm drifts (calculated from
electric potential) have very little vertical variation, i.e., the
contours are mostly vertical lines, whereas the timesgcm drifts
(both with and without efield) show much more structure, especially
below about 120-150km. After showing the codes and plots to Art
we realized that the neutral winds are being used in the calculation
of the timesgcm drifts, whereas in tiegcm proc the drifts are essentially
ExB (approx the electron drifts?). In the tiegcm proc, no neutral winds
are used in the drift calculation. 

For now I will send the timesgcm results to Ed Sz (with and without efield),
since I have corrected the bug (BTW, the plots are quite different after
fixing that bug at many of the locations other than the one I chose to
test). But I will wait to here from you before I send the tiegcm results 
to him. Do you want an option to add unmag and vnmag to the calculation 
of ion drifts in the tiegcm processor? Art said he could probably help
me with that if you want.

--Ben