ocean currents, distance from the ocean, altitude, amount of sun, and distance from the equator affect tropical rainforest
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The equator is the warmest place on earth. Warm air rises and that causes a lowering of the atmospheric pressure. As that air rises, it cools down by adiabatic effect of a lesser pressure aloft and moisture condenses into clouds, then rain.
The air rising in that region called, the inter-tropical convergence zone (ITCZ) comes down at roughly latitudes 30 N and 30 S and that is where we find most deserts on earth since sinking air warms up by the same adiabatic effect and clouds evaporate.
The tropical rain forest is the result of the ITCZ. However, the closer to an ocean, the greater the chance to see a lot of moisture in the air and, therefore, the most abundant rain. Mountain ranges have also an influence on the weather because its orographic effect makes the air rise on the weather side of the mountain range, and cause precipitation on that side. On the lee side of the prevailing wind, the weather will be much dryer since most of the moisture didn't made over the top of the mountain range.
The air rising in that region called, the inter-tropical convergence zone (ITCZ) comes down at roughly latitudes 30 N and 30 S and that is where we find most deserts on earth since sinking air warms up by the same adiabatic effect and clouds evaporate.
The tropical rain forest is the result of the ITCZ. However, the closer to an ocean, the greater the chance to see a lot of moisture in the air and, therefore, the most abundant rain. Mountain ranges have also an influence on the weather because its orographic effect makes the air rise on the weather side of the mountain range, and cause precipitation on that side. On the lee side of the prevailing wind, the weather will be much dryer since most of the moisture didn't made over the top of the mountain range.