Final answer:
A pilot can expect a wind shear zone in a temperature inversion whenever the wind speed at 2000 to 4000 feet ASL is significant.
Step-by-step explanation:
In the context of aviation and meteorology, wind shear is a change in wind speed or direction over a short distance in the atmosphere. While the question does not specify a precise wind speed threshold for wind shear during a temperature inversion, pilots should be alert for significant changes in wind speed between surface levels and altitudes of 2000 to 4000 feet ASL.
Wind shear refers to the change in wind speed or direction over a relatively short distance in the atmosphere. For practical purposes, this question doesn't provide a specific wind speed threshold needed to anticipate wind shear in a temperature inversion, but a pilot should be vigilant for signs of wind shear when wind speeds at altitude differ significantly from those on the ground.
To provide an example of how wind can affect a plane, consider a plane flying north at 200 m/s with a headwind blowing from the north at 70 m/s. The resultant velocity of the plane would be the difference between the speed of the plane and the speed of the wind, resulting in a net speed of 130 m/s northward. If we were to consider wind shear, we would be looking not just at the wind's speed but also its sudden change in speed or direction across different altitudes.