444slides.23.021907

444slides.23.021907 - Parker's perspective Glossary of...

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Parker’s perspective Glossary of Meteorology: “Front : the interface or transition zone between two air masses of different density” - must use a density variable Lackmann’s perspective H. Bluestein, Synoptic-Dynamic Meteorology in Midlatitudes, V. II: “In the broadest sense, the front is a boundary between two air masses .” (Bluestein’s italics) - equiv. pot. temp. quite useful
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Thought experiment 1 If there is no density gradient… Question 1: Does the boundary imply a thermal wind? Question 2: What is the nature (and response) to frontogenesis/lysis by the horizontal wind? (is there frontogenesis/lysis by the geostrophic wind?) Question 3: Will there be solenoidal circulations?
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Thought experiment 2 Consider a cold front moving across the east-central U.S. in late spring. The air ahead of the front is warm, humid, and cloudy. The air mass behind the front is cooler and dry, and characterized by clear skies. During the afternoon hours, solar heating warms the post-frontal air to the point where
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444slides.23.021907 - Parker's perspective Glossary of...

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