Ch1 - Ch. 1 Global Change 1. anthropogenic greenhouse...

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Ch. 1 Global Change 1. “anthropogenic greenhouse gases”: human induced changes in the environment- forests, mountains, lakes, rivers, oceans a. 3 gases increasing in Earth’s atmosphere: CO2, CH4 methane, N2O nitrous oxide 2. 4 fundamental components of Earth’s system : atmosphere, hydrosphere, biota, and solid Earth 3. Difference between global warming and greenhouse effect : greenhouse real, natural process that keeps the surfaces of Earth and other terrestrial planets warmer than they would be in the absence of an atmosphere. Global-warming increase in Earth’s surface temp brought about by a combination of industrial and agricultural activities. 4. How much has Earth’s CO2 concentration increased since 1800? 40%, 280ppm in 1800 a. How do we know this? Ice core measurements show that the preindustrial CO2 concentration was 280ppm b. Primary causes of this increase? 1850- deforestation of North America by westward-expanding settlers pioneer effect 5. 2 ways chlorofluorocarbons can affect environment:
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This note was uploaded on 10/14/2011 for the course GEO-SCI 100 taught by Professor Williammccoy during the Spring '11 term at UMass (Amherst).

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Ch1 - Ch. 1 Global Change 1. anthropogenic greenhouse...

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