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.
A comprehensive English glossary of weather. Полный английский глоссарий погоды. 2012