EPS 201L - HUMANS AND GLOBAL CLIMATE

EPS 201L - HUMANS AND GLOBAL CLIMATE - EPS 201L Humans...

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EPS 201L Humans Altering Global Climate Quetions 1. During the last 3 million years, are the ice ages (glacial stages) longer, or shorter, than the intervening interglacial stages? 2. How thick is the Antarctica Vostok ice core? 3. Approximately how old is the Vostok ice core? 4. How do paleoclimatologists determine ancient concentrations of atmpospheric CO 2 and methane over the last several 100,000 years? 5. Describe what processes cause the concentration of atmospheric CH 4 to increase. 6. What is different about the atmospheric CH 4 concentrations during our present interglacial period than in past interglacial periods? 7. What is different about the atmospheric CO 2 concentrations during our present interglacial period than in past interglacial periods? (Hint: loot at the figure on page 50) 8. How have other investigators explained these differences in greenhouse gases in our interglacial versus previous interglacial periods? 9. Why are these explanations unsatisfactory? 10. Where and when did agriculture (farming) originate? The ice ages are longer than the intervening interglacial stages. The Antarctica Vostok ice core is three kilometers long. The Vostok ice core records temperature variations over a 400,000 year period.
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This note was uploaded on 02/02/2011 for the course EPS 201 taught by Professor Mayaelrick during the Spring '09 term at New Mexico.

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EPS 201L - HUMANS AND GLOBAL CLIMATE - EPS 201L Humans...

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