EVSC 1080 Study Guide - Midterm Guide: Dimethyl Sulfide, Nitric Acid, Nitrification
21 May 2016
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3 fates of co2 in atmosphere: absorbs in ocean, stays in atmosphere, land sink. Fossil fuel combustion is about ten times more than that of deforestation for emitting co2 into the atmosphere. Acidity of rain has decreased by a factor of 10 due to the clean air act. Major source of sulfur oxide to the atmosphere is volcanic eruption. Sulfur oxides gases with short residence times that are removed by chemical conversion, wet deposition, or dry deposition (just like nitrogen oxides) Both of the above are produced by bacteria. Humans put so2 in atmosphere primarily from fossil fuel combustion, has the same impact as natural emissions. Humans cannot put so2 in the stratosphere, the residence time is too short for that. Nitrogen cycle is how nitrogen moves between different reservoirs. Nitrogen cascade is how different things can affect others.
