Which condition is necessary for the occurrence of low-level temperature inversion wind shear?

The condition necessary for the occurrence of low-level temperature inversion wind shear involves having a calm or light wind near the surface combined with a relatively strong wind just above the inversion layer. This situation is significant because, during a temperature inversion, a layer of warmer air traps cooler air at the surface. When light winds exist at the surface, the stable air can remain undisturbed, while a stronger wind aloft creates a significant shear layer. This wind shear can lead to variations in airspeed and direction, which poses challenges for aviation, particularly during takeoff and landing phases.

The presence of a strong wind above this stable layer means that as an aircraft ascends or descends through the inversion, it can encounter sudden changes in wind speed and direction. Understanding this phenomenon is critical for safely managing aircraft operations in conditions where such inversions occur.