Mountain breeze and valley breeze
In
Cause
Mountain and valley breezes form through a process similar to sea and land breezes. During the day, the sun heats up mountain air rapidly while the valley remains relatively cooler. Convection causes it to rise, causing a valley breeze. At night, the process is reversed. During the night the slopes get cooled and the dense air descends into the valley as the mountain wind.[4] These breezes occur mostly during calm and clear weather. Mountain and valley breezes are other examples of local winds caused by an area's geography. Campers in mountainous areas may feel a warm afternoon quickly change into a cold night soon after the sun sets. During the day, the sun warms the air along the mountain slopes. This warm air rises up the mountain slopes, creating a valley breeze. At nightfall, the air along the mountain slopes cools. This cool air moves down the slopes into the valley, producing a mountain breeze.
References
- ^ "katabatic wind, on AMS Glossary of Meteorology". American Meteorological Society.
- ^ "Valley breeze". Glossary. American Meteorological Society.
- ^ "Mountain breeze". Glossary. American Meteorological Society.
- ISBN 0-02-322443-6.