BIO 1700 Lecture Notes - Lecture 20: Gulf Stream, Thermohaline Circulation, Permafrost
8 Apr 2017
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Document Summary
Natural emissions: breathing (animals), forest fires, ocean heating, this is compensated by large wells (in the forests, sediments and oceans, storage of carbon. Anthropogenic emissions: combustion of fossil fuels, certain industries (making cement creates lots of co2 emissions, deforestation, especially in tropical areas. Natural: large quantity of methane in the permafrost; with the melting of it massive amounts of methane will be released, gas from animals (cows) Anthropogenic sources: combustion of organic matter, cultivation of rice, cultivating cows, sheep, goats, etc, garbage, burning of natural gas. Ghg: increase in co2, methane and nitrous oxide throughout the past millennium. Lifeti(cid:373)e of ghg"s i(cid:374) the at(cid:373)osphere: physical phenomenon. Other important impacts on climate: decrease of the albedo (reflective power of a surface): leads to increase in temperature of the oceans. Precipitation: drought in subequatorial zones, more precipitation in higher latitudes. Gulf stream, scared it might stop the whole thing which would affect the temperature across north america.
