Climate of Cameroon

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The climate of Cameroon is very diverse. Cameroon is generally referred to as the Africa in miniature because it has the major climates and vegetation of the continent. The country is separated in two mains climatic zones: the equatorial climate in the south and the tropical climate in the northern part. [1]

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Types of climate

A Koppen climate classification map of Cameroon. Cameroon map of Koppen climate classification.svg
A Köppen climate classification map of Cameroon.

The equatorial climate

The equatorial zone in Cameroon stretches from 2 to 5° N, covering the southern and the mountainous western part of the country. The equatorial zone has 4 seasons 2 dry and 2 wet. [2] The equatorial zone It is characterized by abundant rainfall (more than 1,000 mm of rainfall per year) and especially by the absence of a dry season: we speak here of "dry seasons" for the periods when it rains less (December–January, then July–August, with local variations). The atmosphere is humid all year round: The temperature ranges from 20 to 25 °C and the wettest regions receive more than 400 mm of rainfall per month. [3]

This climate has many nuances, classified differently according to the studies, but which all depend on the relief and the proximity of the Atlantic coast. The coastal plain around Douala experiences a so-called “hyperhumid” climate with a total absence of a dry season. Douala is regularly flooded in the rainy season. At the foot of Mount Cameroon, rainfall is at record levels: more than 7,500 mm per year in Limbé. The equatorial climate of the western highlands is “mountain facies” (the relief creates strong variations in rainfall and lowers temperatures).

The coastal belt includes some of the wettest places on earth. The coast near Mount Cameroon experiences the most abundant rainfall in the country. The locality of Debundscha for example, has an average annual rainfall of 10,299 mm. [4]

The southern Cameroon plateaux and the southern coastal plain experience the so-called Guinean-type climate that characterizes the Congo Basin forest.

The Tropical climate

From south to north, depending on the latitude with variations due to the relief, the tropical climate has three very different types:

Climate change

The average annual temperature of Cameroon has increased over the past decades going up by 0.86 °C over 46 years, from 24.28 °C in 1974 to 25.14 °C in 2020. On the other hand, the average annual precipitation has decreased by 2.9 millimeters per decade since 1960, with a particularly low average rainfall in 2015. [5]

In the northern part the violent winds, floods, landslides, erosion, and increased incidences of drought and desert advancement have scorched large expanses of land, causing

Climate change is an imminent threat to Cameroon's development due the country's dependence on natural resources and Cameroonians’ dependence on agriculture. With its heavy rainfall that alternates with a six- to seven-month dry season, the Northern Cameroon seems to be the most vulnerable to climate change.

In December 2009, the Cameroonian government created the National Observatory on Climate Change (NOCC), an organisation under the supervision of the Ministry of environment, in charge of monitoring and evaluating the socio- economic and environmental impact of climate change in Cameroon. [6] The NOCC collect climate data and publishes regular reports on the effects of climate change in Cameroon. [7]

Extreme weather and hazards

Between 1980 and 2020, floods and droughts were the second and third most frequently recurring natural hazard in Cameroon on average, or 32.1 percent and 7.5 percent of total natural hazards. [3]

Floods

Flood in Douala. Inondation a Bonamoussadi.jpg
Flood in Douala.

Droughts

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References

  1. Pouokam, Guy (9 September 2012). "Cameroon Climate Compatible Developement [sic]: Cameroon case study".{{cite journal}}: Cite journal requires |journal= (help)
  2. Molua, Ernest (26 April 2006). "Climatic trends in Cameroon". Climate Research. 30 (3): 255–262 via JSTOR.
  3. 1 2 "World Bank Climate Change Knowledge Portal". climateknowledgeportal.worldbank.org. Retrieved 2023-05-01.
  4. "The 5 Wettest Places On Earth". WorldAtlas. 2022-10-27. Retrieved 2023-05-01.
  5. World Bank (2022). Cameroon Country Climate and Development Report 2022. Washington: The World Bank Group. p. 15.
  6. "ONACC | Observatoire Nationalsur les Changements climatiques". www.onacc.cm. Retrieved 2023-05-02.
  7. Nkiaka, Elias; Lovett, Jon C. (2019-04-01). "Strengthening the science-policy interface for climate adaptation: stakeholder perceptions in Cameroon". Regional Environmental Change. 19 (4): 1047–1057. doi: 10.1007/s10113-018-1441-4 . ISSN   1436-378X.