EAPS 10400 Lecture Notes - Lecture 7: Shortwave Radiation, Greenhouse Effect, Shortwave Radio
26 Jan 2019
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Water vapor: absorbs and reabsorbs radiation, accounts for 2/3 greenhouse warming, air temperature controls it, 4% more water vapor since 1970. Water vapor in the atmosphere absorbs infrared radiation, contributes 2/3 of the greenhouse effect, and acts as a positive feedback when warming occurs. Carbon dioxide: re-emits energy and then comes back to it as either heat or other greenhouse molecules, accounts for greenhouse warming, traps energy in the earth"s atmosphere, making the earth warm. Global temperature has been increasing 1 degree each year. Uncertainty has been decreasing over the years: due to technology. 2000-2010 has been the warmest years recorded. The observed 30-year average global temperature from 1970 to 2010 has increased by __. Added co2 has fingerprints caused by combustion of co2: manufacturing 1/5, residential and commercial 2/5, deforestation 1/5, transportation 1/5. Produced by decomposition of organic matter in the absence of oxygen. Methane, a greenhouse gas is produced mainly by __.
