LIFESCI 2H03 Study Guide - Climate Change Feedback, Biogeochemistry, Climate Sensitivity
16 Apr 2013
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Life science 2h03- short answer review: milankovitch theory (lecture 9: long term climate change) Ice growth in the northern hemisphere occurs when: summer insolation is low. Isolation would need to persist over thousands of years to see an effect: leads to less melting. Aphelion= far from the sun perihelion= close to the sun. Ice sheets at the poles leads to cooling of the oceans, and the solubility of co2 is affected. More co2 and less in atmosphere, which increases photosynthesis. Milankovitch"s theory predicts that the gravitational influences of the moon and the other planets, combined with. Earth"s slightly nonspherical shape, induce small but important variations in earth"s orbital parameters. These variations affect the amount of summertime insolation at high northern latitudes, triggering the onset and end of glacial intervals. The forcings from eccentricity changes at this periodicity are too small. Ls2h03- 2013 final exam short answer review: chemical weathering and climate feedbacks (lecture 9)
