Tropical Climate
- Created by: Charlie Davies
- Created on: 28-05-14 10:42
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- Tropical Climates
- all tropical climates are hot and most are wet
- they're hot because the sun is overhead(high in the sky)= lots of solar radiation reaching surface
- they're usually wet as they are affected by the ITCZ.
- In this zone, NE and SE trade winds meet and create a low pressure zone of rising air that cools and condenses= frequent heavy rainfall
- also wet because of travelling low pressure systems such as subtropical cyclones.
- these are spinning storms with a low pressure centre that form outside the tropics. They often move towards the equator bringing cooler air, winds and rain
- Tropical Savanna Climates
- Hot with a wet season and a dry season
- found between 5 and 20o north and south of the equator
- between the ITCZ and zones of subtropical high pressure
- Characteristics
- Hot temperatures all year round
- between 18 and 30oC
- Medium annual rainfall
- Rainfall is seasonal- most of rainfall is in wet season and little in dry season
- Winds are mostly trade winds
- Hot temperatures all year round
- why is climate like this?
- 1. Sun is overhead all year round
- 2. The we and dry seasons are caused by seasonal shift in position of ITCZ
- JANUARY
- the ITCZ moves south
- the northern hemisphere tropical savannas lie under the high pressure zones=little rain
- the ITCZ moves south
- JULY
- the ITCZ moves north
- this brings low pressure and heavy rainfall to tropical savannas in northern hemisphere
- the ITCZ moves north
- JANUARY
- E.G. LAGOS, NIGERIA
- temperature varies from 24.9-28.2oc
- Rainfall is 1740mm ayear and varies from 25mm December, 414mm in June
- all tropical climates are hot and most are wet
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