3.4 The tropical climate

3.4 The tropical climate
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AardrijkskundeMiddelbare schoolhavo, vwoLeerjaar 3

This lesson contains 15 slides, with text slides and 3 videos.

time-iconLesson duration is: 30 min

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3.4 The tropical climate

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Learning objectives:
After studying this section, you will be able to:
  • Describe the two types of tropical climate;
  • Explain how the sun causes the wet and dry seasons in the savannah climate.

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The tropics, the subtropics and other geographical zones on Earth.

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Slide 4 - Video

Climate graph for Bandung, Indonesia (Af).
Climate graph for Kinshasa, Democratic Republic of the Congo (Aw).

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 The savannah landscape in Tanzania.
Tropical rainforest in Australia.

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Slide 7 - Video

Monsoon climate = Climate zone with high temperatures and a specific dry period and also very high precipitation events during the wet season.

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Slide 10 - Video

Convectional rainfall
High levels of solar radiation in the tropics lead to convectional rainfall.

How it is formed:
  1. Energy from the sun heats up the land and the air above;
  2. A high rate of evaporation;
  3. The warm and humid air rises;
  4. Warm wet air rises and cools down;
  5. Clouds are formed and rain will fall.

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Three types of rainfall
There are three types of rainfall:
  1. Precipitation caused by incoming solar radiation = Convectional rainfall.
  2. Rainfall caused by the collision of a warm and cold front = Frontal rainfall.
  3. Rainfall caused by air that is pushed up by a mountain ridge = orographic or relief rainfall.

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Hadley cell circulation
Hadley cell
Tropical atmospheric circulation.

Trade winds
Prevailing winds in the tropics, blowing from east to west.

Intertropical convergence zone (ITCZ)
Area where the northern and southern trade winds come together, causing rising air and thunderstorms.

ITCZ

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The location of the ITCZ (a low pressure area in the tropics) in January and July.

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Look at the planner in Teams for the homework!

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