What is the term for low-level wind shear that is not convectively produced?

The term for low-level wind shear that is not convectively produced is commonly referred to as Low Level Wind Shear (LLWS). LLWS is a significant phenomenon in aviation, particularly because it can lead to sudden changes in wind speed and direction at altitudes close to the ground, which can impact aircraft during takeoff and landing.

LLWS occurs primarily due to variations in temperature and surface friction, which can lead to differences in wind speed and direction over short distances. This form of shear is not related to convective currents (which are typically associated with thunderstorms or severe weather) but instead is often encountered in stable atmospheric conditions.

While other terms such as vertical shear or horizontal wind shear describe changes in wind properties with altitude or across distances, they do not specifically refer to the low-level wind conditions that are characteristic of LLWS. Jet stream shear refers to the strong winds aloft associated with the jet stream, typically found at much higher altitudes, and therefore is not relevant to this question.