status of climate change 2013 catee conference san antonio 2013
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Status of Climate Change 2013
CaTee ConferenceSan Antonio
2013
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Menu for Today
• IPCC 2013: Assessment Report #5• Facts about Climate Change• Who will Win, Who will Lose• What Needs to be Done
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IPCC #5
• No great surprises - Sharper language• Uncertainties are still large• Essentially no change in Projections
except Sea Level Change expected higher than #4
• No Change for Hurricanes, Severe Weather – still very uncertain
• Ocean Acidification more certain, probably more serious
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Facts about Climate Change
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About 0.8o C pe
r century
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Ten Year Climatology from Tropical Rainfall Measuring Mission
Climate Change: The
arid subtropics will expand
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IPCC #5 future Climate Change
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Oceans become More Acidic due to Dissolving CO2
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Winners & Losers
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Managed vs. Unmanaged Systems
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Which sectors are growing?
From: The Climate Casino by William Nordhaus, 2013
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From: The Climate Casino by William Nordhaus, 2013
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What Needs to be Done
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Sources of the CO2
From: The Climate Casino by William Nordhaus, 2013
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From: The Climate Casino by William Nordhaus, 2013
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From: The Climate Casino by William Nordhaus, 2013
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Conclusions•Climate is changing, no doubt• It will get warmer, more arid in most
subtropical areas: water problems• Ocean will get more acidic:
extinctions•Mitigation is imperative, but adaptation must play a role•Coal burning is the main emitter of CO2 world-wide• We need market mechanisms to
curb it•Poor countries will suffer most because of vulnerabilities: migration, war•The really difficult problem is with problems that involve values we cherish, but cannot be quantified.