I submit, if I can get them to load, two videos I just took of my three RMYoungs, one each Texas Wx Instruments and Peet Bro wind sensors. The Davis is too far out of the field of view to see all the time.
And I apologize for this less than Cecil B. DeMill footage, I was zoomed all the way in with my old phone camera, and the dogs were insisting that rather than watch some blue sky, that I should throw their frisbees for them, and the end result was a pretty unsteady shot.
Nonetheless, the important thing is to see how much these sensors vary from moment to moment, and that the prop type Youngs don't even agree, although admittedly they are a few feet apart in vertical placement on the tower. But the Peet and the TWI are very close and they sway back and forth more than one might think.
All worth watching when the temperatures are mild and a few moments to contemplate how the very local conditions vary.
It's not like landing in a 30 degree gusty crosswind, but it gives some idea how the variations pretty much negate the few degrees off one might be with setting up the sensor when mounting it. I admit, I have used the north star, the compass (corrected), the gps and tried the sun method when I was looking for a north-point removed from the tower so I could just sight it towards the point and be happy it was within 5 degrees or so. They all ended up pointing at a spot that a big rock just to the west of a nice birch tree, and I think that it was within a few feet of one another, and about 100' away from the tower as a reference point.
I guess a .mp4 file cannot be uploaded, or at least I can figure out. Anyone know how to do that?