Tropical rainforest climate

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Worldwide zones of Tropical rainforest climate (Af).

A tropical rainforest climate is a tropical climate usually found within 10 to 15 degrees latitude of the equator, and has at least 60 millimetres (2.4 in) of rainfall every month of the year. Regions with this climate are typically designated Af by the Köppen climate classification. A tropical rainforest climate is typically hot, very humid, and wet.

Description[edit]

Tropical rain forests have a type of tropical climate in which there is no dry season—all months have an average precipitation value of at least 60 mm (2.4 in). In rainforest climates the dry season is very short, and rainfall is normally heavy throughout the year. One day in a tropical rainforest climate can be very similar to the next, while the change in temperature between day and night may be larger than the average change in temperature during the year.[1]

When tropical rain forest climates are more dominated by the Intertropical Convergence Zone (ITCZ) than the trade winds (and with no or rare cyclones), so usually located near the equator, they are also called equatorial climates. Otherwise, when they are more dominated by the trade winds than the ITCZ, they are called tropical trade-wind climates. In pure equatorial climates, the atmospheric pressure is low, almost constant so the (horizontal) pressure gradient is low. Consequently the winds are rare and usually weak (except sea and land breezes in coastal areas) while in tropical trade-wind climates, often located at higher latitudes than the equatorial climates, wind is almost permanent which incidentally explains why rainforest formations are impoverished compared to those of equatorial climates due to their necessary resistance to strong winds accompanying tropical disturbances.[2]

Distribution[edit]

Upland rain forest in Borneo. Sabah, Malaysia

A tropical rain forest climate is usually found at latitudes within 15 degrees North and South of the equator, which are dominated by the Intertropical Convergence Zone (ITCZ). The climate is most commonly found in South America, Central Africa, Southeast Asia and Oceania. These rain forests are uniformly and monotonously wet throughout the year. Locations in Oceania, areas along the coast of South and Central America, from Ecuador to Belize, parts of Central Africa, and much of Indonesia have this type of hot and humid climate.

Notable cities with tropical rain forest climates[edit]


Paramaribo, Suriname
Climate chart (explanation)
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M
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200
 
 
30
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140
 
 
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210
 
 
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170
 
 
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90
 
 
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90
 
 
33
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120
 
 
32
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180
 
 
30
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Average max. and min. temperatures in °C
Precipitation totals in mm
Source: [1]
Mbandaka, DR Congo
Climate chart (explanation)
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80
 
 
31
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140
 
 
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31
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100
 
 
29
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200
 
 
30
19
 
 
210
 
 
30
19
 
 
190
 
 
30
19
 
 
120
 
 
30
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Average max. and min. temperatures in °C
Precipitation totals in mm
Source: [2]
Biak, Indonesia
Climate chart (explanation)
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M
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250
 
 
29
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240
 
 
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250
 
 
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200
 
 
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250
 
 
29
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230
 
 
29
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250
 
 
28
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240
 
 
29
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220
 
 
29
25
 
 
180
 
 
29
25
 
 
190
 
 
30
25
 
 
230
 
 
29
25
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: [3]
Kuching, Malaysia
Climate chart (explanation)
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M
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M
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466
 
 
30
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445
 
 
29
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251
 
 
32
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347
 
 
33
24
 
 
310
 
 
32
23
 
 
184
 
 
31
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326
 
 
32
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208
 
 
32
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307
 
 
32
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482
 
 
32
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516
 
 
30
23
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: Monthly Statistical Bulletin Sarawak
Quibdó, Colombia
Climate chart (explanation)
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M
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579
 
 
30
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505
 
 
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655
 
 
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776
 
 
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762
 
 
31
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803
 
 
31
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852
 
 
31
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702
 
 
31
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654
 
 
30
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728
 
 
30
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589
 
 
30
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Average max. and min. temperatures in °C
Precipitation totals in mm
Source: [4]

See also[edit]

References[edit]

  1. ^ McKnight, Tom L; Hess, Darrel (2000). "Climate Zones and Types". Physical Geography: A Landscape Appreciation. Upper Saddle River, NJ: Prentice Hall. pp. 205–8. ISBN 978-0-13-020263-5.
  2. ^ Climatologie Pierre Estienne Alain Godard, pages 309 and 316