The Atmosphere, the Ocean and Environmental Change (GG 140) This lecture describes how pollutants mix in the atmosphere. Three cases are considered: confined mixing, unconfined mixing, and unconfined mixing with wind. In a confined volume, the concentration of pollutant in the air depends on the volume and the mass of the air present in the volume. Unconfined mixing is also known as diffusion, in which the pollutant disperses through the air from the source over time. When wind is considered, the pollutant disperses from the source in the direction of the wind. The change in temperature with height in the atmosphere is also discussed. 00:00 - Chapter 1. Mixing in the Atmosphere: Confined Valley 07:22 - Chapter 2. Mixing in the Atmosphere: Unconfined Mixing 16:59 - Chapter 3. Mixing in the Atmosphere: Unconfined Mixing with Wind 27:10 - Chapter 4. Lapse Rate 34:52 - Chapter 5. Buoyancy Effects of Rising and Descending Air Parcels Complete course materials are available at the Open Yale Courses website: http://oyc.yale.edu This course was recorded in Fall 2011.
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