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Climate Change Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change

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Page 1: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change

Climate ChangeGreenhouse Effect

Mechanisms Affecting the Greenhouse

Evidence for Climate Change

Page 2: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change

Myth Busters Question

http://www.youtube.com/watch?v=pPRd5GT0v0I
Page 3: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change
http://upload.wikimedia.org/wikipedia/commons/8/8e/Earth%27s_greenhouse_effect_%28US_EPA%2C_2012%29.png
Page 4: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change

NASA GREENHOUSE EFFECT

http://www.youtube.com/watch?v=ZzCA60WnoMk
http://www.youtube.com/watch?v=ZzCA60WnoMk
Page 5: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change

I. Greenhouse Effect1. Radiation from Sun enters atmosphere

a. Reflection (clouds, ice, water) b. Absorption by Surface

2. Earth’s surface creates infrared radiation a. Greenhouse gases trap infrared radiation b. CO2, H20, CH4

Page 6: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change

Greenhouse Simulator

Page 7: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change

II. Mechanisms Decreasing Greenhouse Temps

1. Increased Solar Reflection a. Volcanic ash, impact ash, glaciers b. Plate tectonics /ocean currents/ice caps

2. Less solar radiation from Sun (orbit/tilt)3. Less greenhouse gases (cycles)

Page 8: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change

Eruptions and Temperature

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&docid=4CU52wsulL1HbM&tbnid=mO7X6abRpctNHM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.goes-r.gov%2Feducation%2Fcomet%2Fbroadcastmet%2Fclimate%2Fprint.htm&ei=AGs4U8m5C6njsATNpoDwCA&bvm=bv.63808443,d.b2I&psig=AFQjCNHcwpLlW9IZBmgdjhoOzqA56DqXNg&ust=1396292674496465
Page 9: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change

II. Mechanisms Increasing Greenhouse Temps

1. More greenhouse gasesa. Changes in cycles that recycle gasesb. Burning of fossil fuelsc. Volcanic gases

2. More solar radiation a. Changes in Earth’s tilt and orbit b. Positive feedback loops

Page 10: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change
Page 11: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change
Page 12: Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change

Evidence for Climate Change

PAST PRESENTNorth America Ice

AgeGlacial material &

landforms, lakes, sea levels, extinctions

• Retreating Glaciers (melting)

• North pole ice sheet shrinking

Eocene Thermal Maximum

Sea levels, ocean core samples, extinctions

• Changing migrations • Species moving

northward

• Average global temps• Ocean temps• Sea Levels


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