An­abatic winds

Yachting Monthly - - PRACTICAL SEAMANSHIP -

These are in many ways the op­po­site of kata­batic winds. They oc­cur in calm weather and dur­ing day­time, per­haps where the sun is shin­ing on one side of a val­ley.

This heats the air on the slope, which then rises, often form­ing cu­mu­lus above the top of the ridge as the warm, moist air cools. The ris­ing air cre­ates low pres­sure on the slope, which drags in cooler air from the shaded part of the val­ley.

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