Tropical cyclones (Hurricanes)

Mind Map by lucyhacking, updated more than 1 year ago
Created by lucyhacking about 6 years ago


A Levels Geography (Unit 1- Extreme weather) Mind Map on Tropical cyclones (Hurricanes), created by lucyhacking on 11/28/2013.

Resource summary

Tropical cyclones (Hurricanes)
1 Also called typhoons/cyclones/willywillys
1.1 Develop over warm oceans, where oceans are deep and temp is greater than 26degrees
1.1.1 Located where ocean temp is at its highest (Autumn) Located where 2 Hadley Cells meet, within the trade wind belt between 5 and 20 degrees latitude North or South of the equator Once formed move Westwards (due to spin of the Earth) following unpredictable course and loose energy when they reach land
2 Form when ITCZ has moved to its most Notherly point (in that area) allowing 2 air masses to merge at low levels
2.1 Unlike depressions hurricanes occur when temperatures, pressure and humidity are uniform over a wide area
2.1.1 Intense low pressure exists at the Earths surface To enable cyclone to move must be a continuous source of heat to maintain rising air current AND large supply of moisture which creates condensation+rainfall
3 The eye of the storm
3.1 Storm has to be fully developed
3.2 Area 30-50km wide
3.3 Light winds
3.4 Clear skies
3.5 (Anomalous) High pressure
3.6 Increases warming+instability+intensity
4 Tropical cyclones referred to as hurricanes- begin in the Atlantic ocean
5 Tropical cyclones referred to as typhoons- begin in Specific ocean(near Asia)
6 Life Span
6.1 7-14 days
6.2 Loses energy as...
6.2.1 heat source is removed (cooler seas)
6.2.2 increase in friction (over land)
6.2.3 reduced supply of water (over land)
7 Cyclone's greatest point of destruction is by the coastline
8 If they remain over warm water they continue to grow in size and strength
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