lec24 - ES 2 W 09 Lec #24 Climate Change & CO2...

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1 ES 2 W 09 Lec #24 2 Emissions Review: Approaching CO 2 Stabilization Thomas Friedman lecture Impacts: ice, sea level, extreme weather events Conclusions The Major Policy Options Ethical Issues of Intentional climate change (ICC) CRISIS DANGER OPPORTUNITY
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2 ICE MELT The loss of glaciers are the “canaries in the coal mine” for the Earth’s climate system
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3 . Freshwater coverage of Greenland in summers 1992 and 2002
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6 SEA LEVEL RISE
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8 CAUSES OF SEA LEVEL RISE 1. THERMAL EXPANSION 2. GLACIER MELT 3. MECHANICAL Warming the Ocean • The oceans are a huge thermal mass that equilibrates slowly with the atmosphere. • As the atmosphere warms, surface waters also warm. • Warmed water flows along lines of constant density. Source: Hegerl and Bindoff, Science 309, 254-255, 2005
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10 EXTERME WEATHER EVENTS
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From: Webster et al. 2005. Science 309: 1844-1846 Climate changes: extreme events Will warmer oceans create more and bigger hurricanes? Costs of climate change:
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lec24 - ES 2 W 09 Lec #24 Climate Change & CO2...

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