GEOG 131 Lecture Notes - Lecture 13: Urban Heat Island, Anabatic Wind, Katabatic Wind
Document Summary
Sea breeze- during the day, heating of the land causes air to rise, causing low pressure and wind from the sea. Land breeze- land cools more at night so air sinks, increases pressure, and blows out to sea. Valley breeze- upslope breeze: anabatic wind. Mountain breeze- downslope breeze: katabatic wind. Mountain and valley breezes determine pollution transport. Urban in uence on winds: urban heat island- warmer than the surrounding environment, resulting circulation redistributes pollution. Santa ana winds: h forms over great basin, katabatic winds sink and dry ow through narrow passes and gain speed, bring hot, dry wind to coast setting the stage for wild res. Monsoons: seasonal shift in wind direction, causing changes in rainfall and other weather, january- wind ows away from siberian h, july- land warms, wind blows toward the tibetan l, impacts.
