Wind shear

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. Vertical wind shear is a change in wind speed or direction with a change in altitude.

Horizontal wind shear is a change in wind speed with a change in lateral position for a given altitude.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0

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