Meaning of SHEAR in English
Variation in wind speed (speed shear) and/or direction (directional shear) over a short distance. Shear usually refers to vertical wind shear, i.e., the change in wind with height, but the term also is used in Doppler radar to describe changes in radial velocity over short horizontal distances.
Weather and meteorology English vocabulary. Английский словарь погоды и метеорологии . 2012