ECOL 3505H Lecture Notes - Lecture 21: Intertropical Convergence Zone, Ecological Niche, Rain Shadow

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Consequences of variation in solar radiation across latitude. As warm moist air rises, it expands because of decreasing density. As it expands, it cools and can hold less water which leads to rain and convection. That"s why there are rai(cid:374)forests near the equator, where the warm and moist air is. Around 30 deg latitude, the warm air cools, holding onto water and creating areas of desert. *convection cells create wind patterns which drive circulation in waters. Intertropical convergence zone (the place of a lot of water which leads to rainforests) moves up and down along the earth. This leads to monsoons and bimodal rainfalls along the equator. Wind direction from the pacific ocean moves clouds to the side of the mountain side which leads to desert. The rain almost exclusively on one side of the mountain, leading to a rain shadow on the other.

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