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- Another combination of local winds that undergoes a daily reversal consists of the mountain and valley breezes.
- On a warm sunny day the mountain slopes are heated more than the valley floor.
- Hence, the pressure is low over the slopes while it is comparatively high in the valleys below.
- As a result gentle wind begins to blow from valley towards slopes and it assumes the name of valley breeze (see fig.).
- After sunset, the rapid radiation takes place on the mountain slopes. Here, high pressure develops more rapidly than on the valley floor.
- Cold arid heavy air of mountain slopes starts moving down towards the valley floor. This is known as the mountain breeze (see fig).
- The valley and mountain breezes are also named as anabatic and katabatic breezes respectively.
See Also
Mountain and Valley Breeze