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Page Title:
Unit 8 - Lesson 3 - Circulation patterns on upper-air charts |
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Click here to Order your Radar Equipment Online UNIT 8LESSON 3 CIRCULATION PATTERNS ON UPPER-AIR CHARTS OVERVIEW Identify atmospheric circulation
patterns and define special circulation features. Long and short waves Upper-level highs and lows Blocks Zonal and meridional flow Jet streams CIRCULATION PATTERNS ON UPPER-AIR CHARTS The patterns on constant-pressure charts are much the same as those patterns delineated by isobars on surface charts. However, the pattern becomes smoother and less complex on upper-level charts. The 850-mb chart, for example, may show many closed centers, but by the time the 200-mb level is reached, there are few, if any, closed centers. Instead, the contours present a wavelike pattern. These waves, like their ocean counterparts, have definite properties by which they can be identified. Learning Objective: Identify the circula-tion patterns of long waves, short waves, upper highs, and upper lows on upper-air charts. |
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