The tropics are defined as the geographical area lying between 23.5deg. N and 23.5deg.S latitude, while the temperate regions are found above these parallels. Climatologically, the tropics are characterized by high year-round temperatures and weather is controlled by equatorial and tropical air masses. Tropical precipitation is primarily convective. In the more humid tropical regions, annual rainfall is often above 2000 mm and falls in almost all months of the year. In the drier tropics, rainfall can fall below 50 mm, and be very seasonal. The remainder of the region lies between these precipitation regimes, with distinct wet and dry seasons. Agriculture is frequently limited by the seasonality and magnitude of moisture availability.
Evergreen equatorial forest, which occurs in countries with wet climates (2,0007,000 mm per year) and high, fairly even air temperature (around 27°C). It is characterized by a very dense canopy.
In the Amazonic basin Oceanic evaporation from the Atlantic sums to the rainforest evaporation and precipitation exceeds local evaporation throughout the year and there is a continuous growing period.
2006-08-26 05:00:18
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answer #1
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answered by Anonymous
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Not all the regions lying between the 20°N and 20°S are like that.
North of Australia, South of Sahara Desert, South of the Middle East and the Altiplain (Peru and Bolivia) are between those latitudes and are deserted areas.
But for the rest of the areas who receive a high amount of precipitation, the reason is that they usually receive convective rains.
Convective rains are those who occur at dusk, product of the temperature change. This happens in many days of the year.
The result is that the soils are weatherized, converting them in not usable for agriculture, just for grazing.
2006-08-28 20:56:11
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answer #2
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answered by Transgénico 7
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the part is near the sun meaning there is a great evaporation over there which means greater moisture and creating precipitation which makes a lush vegetation
some precipitations probably are brought about by mosoons coming from the horse latitudes
2006-08-29 06:38:18
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answer #3
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answered by johnny_ceasar 1
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The trade winds advect in moisture from outside of the equatorial region.
2006-08-26 19:48:40
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answer #4
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answered by tbom_01 4
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