Hello,
The person in charge of wind and exchanges with atmosphere will be back in January, but I have looked at the implementation and, yes, it seems that old keywords are obsolete. There is now a:
OPTION FOR WIND with default value 0 (no wind) and options 1, 2 and 3 (you can see them in the file telemac3d.dico in the telemac-3D sources. The components of the wind velocity are no longer used and you have now a keyword :
SPEED AND DIRECTION OF WIND : two numbers separated by a semi-colon, speed in m/s and angle in degrees from 0 to 360.
It is indeed difficult to know what to do without the new documentation but you can look at what is done in subroutine meteo.f (library telemac-2d). The SPEED AND DIRECTION OF WIND is here WIND_SPD(1) and WIND_SPD(2). You can see the formulas implemented depending on the OPTION FOR WIND.
I hope this helps, with best regards,
Jean-Michel Hervouet