Our intuitive notion of "wind speed" is that it is the speed at which air molecules are moving at point.
Consider two situations where the velocity of the air molecules are the same but the densities are different.
Will an anemometer indicate the same wind speed in both situations?
How about when using a ribbon (using how it droops as an indication of wind speed)?
How about other air speed measuring devices -- such as a pitot-static system?
And what's the formal definition of "wind speed"? Is it:
- the momentum density divided by a standard value for the density of air
- the momentum density divided by the actual density of air at a point
- something else???
What definition do meteorologists use?