EESA09H3 Lecture Notes - Mixed Layer, Anemometer, Rain Gauge
24 Oct 2012
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Destructiveness tornadoes, hurricanes: 165 tornadoes in 24 hrs, 194 dead in alabama, april 2011. Climatic importance wind chill, local cooling and heating, chinooks. Greeks: aeolus designated by zeus to look after four winds. Japanese myth: fujin was one of the earliest gods of shinto, the god of wind. North american indian: navajo (dine) wind intimately connected to their spiritual life, nilch"i holy wind. Culturally, wind has been used as a metaphor, often representing change. In hindu and buddhist religions: wind is viewed as the nature or state of a god, referred to as vayu , pavan , godai . Early earth: atmospheric composition largely results of volcanic emissions (geologic control) 2. 3b years of methane, carbon dioxide atmosphere: anaerobic conditions, age of bacteria . Abrupt change 2. 3b years ago: oxygen makes an appearance in the atmosphere and stabilizes at 21, aerobic life forms appear and flourish (biologic control, links to gaia hypothesis (james lovelock)
