GEOG 3500 Lecture Notes - Lecture 10: Eemian, Coastal Erosion, Ocean Acidification
6 Apr 2019
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Document Summary
Most climate models only forecast to 2050-2100: as a result, the decision we make on climate now will influence climate for the next 100,000 years. Two models: moderate emissions, 550-600 ppm co2 peak, extreme emissions, 2000 ppm co2 peak. Moderate emissions scenario: co2 emissions peak at 550-600 ppm by 2050, oceans will absorb the co2 and make carbonic acid (ocean acidification, corals, shellfish, crustaceans suffer greatly, temperature will peak in 2200-2300, 2-4 c higher than today. It will take tens of thousands of years to return to today"s temp. It will take hundreds of thousands of years to return to today"s temp. Both of these scenarios see increased temperature and increased increased sea levels and increased ocean acidification: rising sea levels will lead to more storms, coastal erosion. The last great thaw, eemian interglacial saw species altering their ranges to adapt: however, it is not as easy today because we are in the way.
