Confit,
I think you are wrong to argue that the wind was calm, if only for the reasons HN39 has pointed out.
Also, if you look again at the Andre Karsenty video, you will see a large balloon in the backround about 7 seconds before the a/c reaches the treeline. It is leaning slightly towards the south, suggesting some kind of headwind component for the A320.
And, as you and any pilot of any size of a/c know well, the proximity of trees is always associated with some degree of wind-shear.
Wind components (W/Cs) can, of course, be estimated from a comparison between the TAS and the GS. (Any error in the GS readings from the IRS are likely to remain constant for the short period of the straight-line flypast. In this case, allowing for pressure altitude and temperature, adding 3 kt to each IAS value gives the approximate TAS.)
Starting from level-off at TGEN 321 and finishing with TGEN 334, the estimated W/Cs at one-second intervals are as follows:
-7, -4, -8, -9, -7, -7, -6, -4, -6, -5, -7, -7, -3, -3.
The above variations are consistent with small gusts of a light headwind.
Last edited by Chris Scott; 13th Mar 2014 at 15:27.
Reason: Last 3 paragraphs added.