ATOC 1050 chapter 9 notes

ATOC 1050 chapter 9 notes - Chapter 9 Extratropical...

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Chapter 9 – Extratropical Cyclones Forming East of the Rocky Mountains I. Extratropical cyclones A. An extratropical cyclone (area of low pressure) is one that forms outside (“extra” = “outside”) of the tropical latitudes (tropical latitudes are those that run from roughly 30 ° N to 30 ° S). B. The extratropical latitudes (or mid- latitudes) discussed in this chapter are those from roughly 30 ° - 70 ° N. C. These cyclones are formed by divergence at the jet stream level (cold core lows) and are NOT the semi-permanent thermal lows (warm core lows). D. Mid-latitude cyclones (extratropical cyclones) usually are synoptic in scale which 1
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means they average 500 – 2000km in diameter and last from approximately 1 day to 1 week. E. The “purpose” of a mid-latitude cyclone is to help facilitate the sensible heat (heat you can feel) energy exchange. 1. Cold fronts attached to mid-latitude cyclones bring colder air south and warm fronts attached to mid-latitude cyclones bring warmer
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This note was uploaded on 05/03/2008 for the course ATOC 1050 taught by Professor Forrest,be during the Spring '06 term at Colorado.

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ATOC 1050 chapter 9 notes - Chapter 9 Extratropical...

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