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Greenhouse Gas: Carbon Dioxide Thuan, Marko. Carbon Dioxide (CO 2 ) Colorless & odorless gas Ice Age (400 kyBCE) - 185 ppm Preindustrial (1700s) - 278.

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Presentation on theme: "Greenhouse Gas: Carbon Dioxide Thuan, Marko. Carbon Dioxide (CO 2 ) Colorless & odorless gas Ice Age (400 kyBCE) - 185 ppm Preindustrial (1700s) - 278."— Presentation transcript:

1 Greenhouse Gas: Carbon Dioxide Thuan, Marko

2 Carbon Dioxide (CO 2 ) Colorless & odorless gas Ice Age (400 kyBCE) - 185 ppm Preindustrial (1700s) - 278 ppm Global average (June ‘11) - 391 ppm Natural state of CO 2 ?

3 Natural Variations of CO 2 Sinks Photosynthesis Ice The World’s Oceans Sources Combustion Volcanoes, Forest Fires Carbonate Rocks Increase of CO2 associated with seasonal cycles Positive feedback

4 Anthropogenic Changes Ice core sampling 228 ppm to 391 ppm Rapid climate change Over short period CO 2 Levels expected to increase

5 Vostok Ice Core Data 391ppm (2011)


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