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Clouds

Clouds. CLOUDS. CLOUDS ARE FORMED IN TWO WAYS: air is cooled to its saturation point and condensation occurs OR Air absorbs additional water vapour until saturation is reached. LIFTING AGENTS Convection Orographic lift Frontal Lift Convergence Mechanical turbulence.

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Clouds

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  1. Clouds

  2. CLOUDS CLOUDS ARE FORMED IN TWO WAYS: air is cooled to its saturation point and condensation occurs OR Air absorbs additional water vapour until saturation is reached. LIFTING AGENTS Convection Orographic lift Frontal Lift Convergence Mechanical turbulence

  3. Condensation Nuclei • In order for water vapor to condense into clouds, condensation nuclei must be present. • Small particles of dust, smoke, sea salt on the order of .0001 millimeters. • If nuclei are not present, air will become up to 400% supersaturated before condensing.

  4. Precipitation . Pg 8-17 • Any precipitation, in order to form, requires condensation nuclei (small particles on which to collect). - Temperature to dew point spread must be small

  5. CLOUD CLASSIFICATION • Turbulence related – stable or unstable • Rain - showers vs. steady • Four families of cloud as below

  6. Cirrus (CI)

  7. Cirrocumulus (CC)

  8. Cirrostratus (CS)

  9. Altostratus (AS)

  10. Altocumulus (AC)

  11. Altocumulus Castellanus (ACC)

  12. Stratus (ST)

  13. Nimbostratus (NS)

  14. Stratus Fractus (SF)

  15. Cumulus Fractus (CF)

  16. Stratocumulus (SC)

  17. Cumulus (Cu)

  18. Towering Cumulus (TCU)

  19. Cumulonimbus (CB)

  20. CLOUD CLASSIFICATIONS

  21. Other Clouds:Altocumulus Lenticularis

  22. Rapid pressure drop associated over crest of hill Mountain Waves Lenticular Clouds L Roll Clouds Cap clouds

  23. Mammatus Clouds

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