BIOL 3500 Lecture Notes - Lecture 10: Eemian, Coastal Erosion, Ocean Acidification
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 (cid:449)ill take te(cid:374)s of thousa(cid:374)ds of years to retur(cid:374) to today"s te(cid:373)p. It (cid:449)ill take hu(cid:374)dreds of thousa(cid:374)ds of years to retur(cid:374) to today"s te(cid:373)p. 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.
