pioneers of climate change research svante arrhenius ralph keeling roger revelle
TRANSCRIPT
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Pioneers of Climate Change Research
Svante Arrhenius
Ralph Keeling
Roger Revelle
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GreenhouseGasses:
Water VaporCarbon Dioxide*Methane*Nitrous Oxide*
*Increasing Due To Human Activity
Water and Other Greenhouse Gasses Trap Heat to Warm the Planet
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Gaia Hypothesis – Earth is a Self-Regulating System of Feedback Loops
James Lovelock Lynn Margulis
Daisy World
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Modern Era – Oxygen is High,Carbon Dioxide Very Low
Much of Carbon Tied Up in FossilFuels (Oil, Gas, Coal, Peat) FormedIn Carboniferous Per, 300-360 MYA
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Release of Carbon Dioxide From Fossil Fuels and Deforestation Is Responsible for Global Warming
Atlantic Ocean Heat SinkIPCC Projections
Hiatus
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Radioactive carbon-isotope dating of the deep waters indicates that from the time of sinking into the deep until its return to the surface, a period of several hundred or even up to 1000 years will pass.
Ultimately Excess Carbon Will Be Absorbed into Oceans and Other Long Term Sinks
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Consequences of Global Warming Include Sea Level Rise
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Changes in Precipitation And Other WeatherPatterns
Ecological Disruptions Economic Disruptions
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Positive (Reinforcing) Feedback Effects
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Negative Feedback Loops Also Possible
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More Harmful Algae Blooms Coral Bleaching
Ocean Acidification Positive Feedback Through CO2 Release from Coccolithophore Blooms
Impacts of Climate Change on Algae in Oceans
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Melting of Methane Hydrates Failure of Gulf Stream Rapid Sea Level Rise from Melting of Ice Sheets
Runaway Greenhouse Effects Are Possible….
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Melting of IceCaps PredictedIn 1958