ESS102H1 Lecture 7: Lecture 7

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30 Oct 2010
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In steady-state conditions, for each reservoir the inflow = the outflow. If x1 = x2 then you have steady-state conditions. E. g. more carbon dioxide being put into the atmosphere that it can remove. *be able to describe and mention relationship of short-term, medium-term, and long-term cycles. The most important reservoir for carbon is in sedimentary rocks: also relatively more carbon than other elements in all reservoirs. Carbon flux into oceans from atmosphere and back(fast [1-10years]) On land, carbon used in photosynthesis for plant growth (very quick process between biosphere. Some into sedimentary rocks(very slow) and atmosphere: some stored in plants and soil, decomposition of dead organic matter emits carbon dioxide, some carbon released into rivers from land. Subduction- medium-term: melting and release of carbon previously stored in rocks and released in volcanos. Stored oil, gas, coal, and kerogen j long-term. Organisms use carbon from atmosphere and oceans to construct their shells: when they die, it goes back into the sediment.

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