GPHY 314 Lecture Notes - Lecture 7: Thermostat, Gaia Hypothesis, Weathering
31 Oct 2017
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Document Summary
We are close/far enough from the sun sun"s strength has increased something that could have worked as a thermostat what could be the thermostat. 2 types of climate to consider: greenhouse era icehouse era. Greenhouse worlds: venus vs. earth venus has acid fog on top reflects about 80% of incoming solar radiation, only 20% Evidence of life and running water on earth. Sediments and rocks (highest concentration of carbon) If it has a huge reservoir of carbon slow rate of carbon exchange: each reservoir has the potential to warm/cold the system, tectonic time scale = which reservoir is the main source of co2 in the atmosphere. 0. 2gt 1 year: store 0. 2 gt in rocks every year. No physical mechanism too deep a heat source: chemical weather hydrolysis, dissolution, most important coming from hydrolysis, hydrolysis = major weathering process for removal of co2.
