Week 3 Lecture 1 - Week 3 Lecture 1 Tropical Cyclones...

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Week 3 Lecture 1: Tropical Cyclones Hurricane Tracks and the Atlantic Hurricane Season 1) On average 80 tropicla cyclones per year a) 50-70% of which achieve hurricane strength b) Called Hurricanes when close to America c) Typhoons near Asia d) Cyclones for the rest 2) Geographically a) North latitudes- water too cold b) South latitudes – water too col c) Middles latitudes- No hurricanes(because of no Coriolis Effect) c.i) South clockwise c.ii) North counter-clockwise 3) Controlling the cycones a) Typical Track: hurricanes move form E W and then curve to the north a.i) Steered westward by the trade winds a.ii) Turned north by the Coriollis Force and the circulation around the subtropical high pressure system 4) Video notes a) Tropical cyclones go by different names depending on where they are in the world. Near the US they are called "hurricanes". Near Southeast Asia (China and Japan) they are called "Typhoons". In the Indian Ocean and South Pacific, they are called "Cyclones".

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