Geographic information of West Africa

The climate of West African countries is dominated by tropical rainforests for three reasons:

1) West Africa is located near the equator and is controlled by the equatorial low pressure belt all year round, causing updrafts. When it's cold, it's easy to turn into clouds or rain. The temperature is the highest at 2:00 p.m., and a lot of water vapor evaporates into the sky. When it's cold, it condenses. This takes a period of accumulation, so it usually starts around 4:00 p.m. Convective rain.

2) Topographic factors are also a reason for the rainforest climate. Since most of West Africa is located in the Congo Basin, it is well known that the basin terrain does not easily dissipate heat, which further intensifies the characteristics of the rainforest climate. .

3) The Guinea Warm Current passes along the coast (it is a compensatory current according to its nature). The warm current has the functions of increasing temperature, humidity and salt, which also contributes to the formation of the rain forest climate. .

The geographical location of West Africa is approximately (equator latitude, 15 degrees east longitude)

Because West Africa is located near the equator, the sun shines directly twice a year, on March 21 and On September 23, there are no four seasons in West Africa. There are two situations here:

1) Africa is quite special. Originally, it should have a rainforest climate near the equator, but with the existence of the East African Plateau, The rainforest climate is limited to the west of Lake Victoria (near 30 degrees east longitude). In other words, the rainforest climate here is incomplete. Tropical rainforest and savanna climates coexist, and the grassland climate has two obvious dry and wet seasons.

2) As just mentioned, tropical rainforests have no obvious seasonal changes.

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