GEOG 2505 Lecture Notes - Lecture 10: Lapse Rate, Buoyancy, Vorticity
17 Sep 2018
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Quiz i is due sunday, september 30 at 11:59 p. m. Problem set i is due sunday, september 30 at 11:59 p. m. Buoyancy: positively buoyant air rises, negatively buoyant air sinks. Dalr = 5. 5 f per 1000 feet. Walr = 3. 3 f per 1000 feet. Walr exam question ~ condensation warms the atmosphere by the release of latent heat; condensation slows cooling. 850 mb (5,000 feet asl) = caa & waa + derived surface temp, t-storm win potential. 700 mb (10,000 feet asl) = upward motion through cloud layer. 500 mb (18,000 feet asl) = vorticity (is maximized) for shortwave id; steering level for storms exam question ~ where will the low pressure system go. 300 mb (30,000 feet asl) = jetstream level. If you know the parcel temperature at the surface and the lcl, the parcel temperature can be calculated for any height. The point where a rising parcel changes from dalr to walr = lcl.
