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Unformatted text preview: Over the last 150 years the activities of humans have had a profound affect on the composition of the atmosphere and it is believed that the changes in atmospheric composition might result in a change in climate. Discuss the evidence for changes in the atmospheric concentrations of various gases and for climate change. Explain how those changes in atmospheric composition can lead to change in climate. With this background, discuss the role human activity has had in the change in atmospheric composition, and how we might reduce the effect humans are having. I n answering the last question, discuss the positive and negative aspects of the various approaches you propose to reduce the effect of humans. Evidence for changes in atmospheric composition • Relationship between CO2 and temperature. Strong correlation. Increase in CO2, increase in temp. • Radiative forcing- change in outgoing infrared radiation flux caused by a change in concentration of a particular greenhouse gas • Vostok ice core can measure past compositions of atmosphere and compare...
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This note was uploaded on 02/13/2010 for the course BIOL BIOL 350 taught by Professor Garydunphy during the Fall '09 term at McGill.
- Fall '09