Please enable JavaScript.
Coggle requires JavaScript to display documents.
WEAKNESS - Coggle Diagram
WEAKNESS
GLOBAL CIRCULATION
-
-
-
Without this the Earth would be at high temperatures towards the equator and low temperatures across the poles
POLAR CELL
-
-
Air sinks at high latitudes like 90 degree and when it flows towards mid-latitudes like the edge of the ferrel cell the air starts to rise
FERREL CELL
Middle cell, it occurs from the edge of the hadley cell at 30 degree to 60 degree in the north and south
-
air joins the sinking air at the edge of the hadley cell and it travels across the mid-latitude regions until the air rises along the border of cold air with the polar cell. As warm and cold air cannot mix it creates depressions on the Earth's surface
HADLEY CELL
large cell, which extends from the equator to 30 degree north and south of the Earth
winds meet near the equator and warm air rises creating a low pressure system and creating thunderstorms
-
TROPICAL ZONES = at the equator 0 degrees, a region of low pressure system where the both Hadley cells meet . this results in regular heavy rainfall and thunderstorms in places in South East Asia and South America.
TEMPERATE ZONES= mid-latitudes between 50 and 60 degrees. When two cells meet ; the polar and the ferrel cell meet. low pressure is created as the warm air from the equator meets the cold air from the poles creating a weather front. This brings frequent rainfall and UK is located at this zone.
SUBTROPICAL ZONE= high pressure as a result of sinking air where hadley and ferrel cell meet. This creates a belt of deserts like the Sahara in Northern Africa and Namib in Southern Africa. in daytime temperatures can exceed 40 degree Celsius.
POLAR ZONES= at the poles at 90 degree north and south of the equator. Cold air from the polar cell sinks producing high pressure system. Due to the Coriolis effect the Earth creates dry, icy winds. In some parts of Antarctica the average wind speed is 50 mph.
-
-
-