GEOG 131 Lecture 22: Geog 131 Lecture 22
Document Summary
Other types of windstorms: water sprout. Weaker vortices that form over water: less instability. Can travel invisibly; can make landfall: haboob and dust devil. Haboob: downdraft related dust storm, arabic for blasting. Dust devil: extremely unstable air causes a rising vortex, not associated with thunderstorms. Northern hemisphere cyclone: low pressure, counterclockwise rotation, convergence, rising air. Low pressure in tropical ocean: fueled by warm ocean water, turns with coriolis effect. Tropical cyclone: large rapidly rotating low pressure system with strong winds and heavy rain. !1: rising air cools to dew point temperature, vapor condenses and releases heat (more fuel) Friday, october 20, 2017: warm, humid air rises from the ocean, as tall as the troposphere and can be 1000km wide, extremely low pressure, dry, sinking air forms the eye. Names for tropical cyclones: hurricanes (atlantic, typhoons (western paci c, cyclones (indian, willy willy (australia, called tropical depression until 45mph, named as a tropical storm.
