EESA09H3 Lecture : Lecture 1
15 Apr 2011
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Document Summary
Why study wind: human mythology, destructiveness- tornadoes, hurricanes, climatic importance- wind chill, local cooling and heating, chinooks, chinooks- mountain winds, power source- wind power, hur ricanes are not dangerous until it hits the land. The history of wind: earth is 4. 6 billion years old, wind mythology, greeks (euro-centric, aeolus designated by zeus to look after the 4 winds. Identify the metaphoric role wind plays in the movie. Geological control: wind appear 4. 6 billion years, atmospheric not static, is dynamic (changing, early earth, atmospheric composition largely the results of volcanic emissions (geological control)- co2, Ch4: life appears 3. 8 billion years ago. 2. 3 billion years of methane, co2 atmosphere: anaerobic conditions age of bacteria , abrupt change 2. 3 billion years ago. 2. 3 bya, biological control: switch from anaerobic conditions to aerobic conditions 2. 3 billion years ago because. Gaia hypothesis: solar output gradually increased and strong ghg started to increase, warming the planet, oxygen dominated life and planet started to cool down.
