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UPPER AIR MAPS

UPPER AIR MAPS. Change of Air Pressure with Height. Pressure = 500 mb. Warm air is less dense ( “ thicker ” ) than cold air. Strongest Winds. Three-Dimensional Depiction of an Upper Air Constant Height Surface. Ridge. Surface Low. Surface High. Cold. Cold. L. H. Trough. Warm.

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UPPER AIR MAPS

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  1. UPPER AIR MAPS

  2. Change of Air Pressure with Height

  3. Pressure = 500 mb Warm air is less dense (“thicker”) than cold air.

  4. Strongest Winds

  5. Three-Dimensional Depiction of an Upper Air Constant Height Surface

  6. Ridge SurfaceLow SurfaceHigh Cold Cold L H Trough Warm Surface lows form downstream of upper air troughs. Surface highs form downstream of upper air ridges.

  7. Jet Streams COLD WARM WARM WARM (Chap. 8, pp. 206–210)

  8. CLOUD CLASSIFICATION

  9. Basic Cloud Types

  10. CIRRUS

  11. CIRROCUMULUS

  12. CIRROSTRATUS

  13. ALTOCUMULUS

  14. ALTOCUMULUS

  15. ALTOSTRATUS

  16. STRATOCUMULUS

  17. STRATUS

  18. NIMBOSTRATUS

  19. CUMULUS HUMILIS (FAIR WEATHER CUMULUS)

  20. CUMULUS HUMILIS

  21. CUMULUS CONGESTUS (IN BACKGROUND) CUMULUS HUMILIS (IN FOREGROUND)

  22. CUMULUS CONGESTUS

  23. CUMULONIMBUS

  24. CUMULONIMBUS

  25. The same type of cloud will typically be at a lower altitude in the polar regions and higher in the tropics. (Chap. 5, pp. 127–135)

  26. Nerdy Cloud Classification Details Just like animals and plants, clouds are classified according to their genus, species, and variety. 1. Genera: e.g., stratus, cumulonimbus (the types discussed today) 2. Species: e.g., humilis, congestus, castellanus, lenticularis (later) 3. Variety: e.g., undulatus, translucidus, opacus So a cloud might be classified as altocumulus castellanusopacus. (For examples, see Table 5.4 (page 133) and https://cloudatlas.wmo.int/principles-of-cloud-classification.html )

  27. ALTOSTRATUS

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