BIOL 2Q04 Lecture Notes - Lecture 2: Greenhouse Gas, Tropical Climate, Transpiration
27 Sep 2018
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Sun: march-september=northern hemisphere receives more sun-longer days: solar equator- the latitude receiving the most direct rays of the sun temporal variation of the solar equator from 23. 5degrees n (tropic of cancer) to 23. 5 degrees s (tropic of capricorn). 11/09/2018: the unequal heating of earth drives air currents in the atmosphere, atmospheric convection currents the circulator of air between the surface of earth and the atmosphere. As air temp increases it can hold more water vapor: saturation the limit of the amount of water vapor that air can contain. Exceed sat- water vapor condenses to liquid or ice. Increased density increases the rate of molecule collisions and increases air temperature. Looki(cid:374)g at the ea(cid:396)th, the e(cid:395)uato(cid:396) is (cid:858)sa(cid:374)dwi(cid:272)hed(cid:859) (cid:271)etwee(cid:374) the itcz. Su(cid:374) heats the moist tropical air, causes it to rise and the air experiences adiabatic cooling and forms colds and the water vapor is released via precipitation.
