Wind Shear can be defined in the horizontal plane as well as the vertical plane (True/False) Solution True Wind shear, sometimes referred to as wind gradient, is a difference in wind speed and/or direction over a relatively short distance in the atmosphere. Atmospheric wind shear is normally described as either vertical or horizontal wind shear. Horizontal Plane :Horizontal wind shear is a change in wind speed with change in lateral position for a given altitude. Vertical Plane :Vertical wind shear is a change in wind speed or direction with change in altitude..