Geosci 105 - the way-cyclones-tropical cyclones occur in...

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-nightime: warm air ascends off of warmer sea, cool air descends onto cooler land -Monsoons are wind and weather patterns that change with the seasons -climate system where during the warmest months of the year, there is a period of huge rainfalls -monsoons develop for similar reasons as the daily sea breezes, but seasonally. -locations where monsoons occur typically have wet summers and dry winters -well-developed where large mountain ranges lie near warm surface waters -seasonal pattern of wind circulation: -very wet summers, moist air drawn in from indian ocean -dry winters: dry air sinks off Himalayan mountains and Tibetan plateau -Storms -Storms are variations in large-scale atmospheric circulation -cyclones are rotating masses of low pressure air -generally require ocean to fuel them -form both between or within air masses -a large body of air with uniform properties (density) -boundaries of air masses are called fronts -low pressure and high pressure air masses push one another out of
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Unformatted text preview: the way-cyclones-tropical cyclones occur in tropical regions. Biggest ones are hurricanes, typhoons- different names for the same thing-Giant heat engines, fueled by the storage and release of oceanic latent heat by evaporation and condensation-formed by moving heat in the ocean around by condensation and evaporation and are self sustainging as long as they are over warm areas in ocean, loose strength if not over warm water in ocean-Masses of humid, warm rotating air-form within one air mass over ocean between 10 degrees and 25 degrees latitude-born as tropical depressions, low pressure zones in trade winds (winds from Africa to middle latitudes)-must move over water of >26 degrees c, 79 degrees F= pretty warm water-circular winds begin as warm air rises-wind speed <61 km/hr-in Hadley cells-never on equator-become tropical storms if wind speed < 120 km/hr-become hurricanes, typhoons, tropical cyclones if wind speed exceeds 120 km/hr...
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