8/15/2023 0 Comments Define valley breeze![]() Warm, dry winds that move down the east slopes of the Alps.įound in Southern California, hot, descending winds greatly increase the threat of forest fires in an already dry region. created when wen a strong pressure gradient develops in a mountainous region. Warm, dry winds that move down the east slopes of the Rockies. Rapid radiation heat loss along the mountain slopes cools the air, which drains into the valley below. this warmer air glides up along the mountain slope. ![]() ![]() the Southern hemisphere is reversed.Ī pressure belt near the equator with ascending moist, hot air and marked by abundant precipitation.ĭevelops as cooler air over the water moves onto the land.ĭuring the day, air along mountain slopes is heated more intensely than air at the same elevation over the valley floor. With your back to the wind in the northern hemisphere low pressure will be to your left and high pressure will be to your right. Swift geostrophic airsteams in the upper troposphere that meander in relatively narrow belts.Īir flow cycling around low pressure in a counterclockwise direction. The smallest scale of air motion,chaotic winds normally last for seconds or at most minutes.Įxamples include simple gusts, which hurl debris in the air and small, well developed vortices such as dust devils. less than 100 kilometers across(62 miles)Įxample thunderstorms, tornadoes, land and sea breezes and mountain and valley winds. Last for several minutes and may exist for hours. Largest wind patterns, exemplified by the westerlies and trade winds, extend around the entire globe and remain essentially unchanged for weeks at a time. Click here to study/print these flashcards.Ĭreate your own flash cards! Sign up here.
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