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Pg tp-class23-clouds, fog, buoyancy

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Pg tp-class23-clouds, fog, buoyancy

  1. 1. Lecture 23 Buoyancy, Stability, Clouds and Fog
  2. 2.  A visible collection of microscopic liquid water droplets and/or ice crystals
  3. 3.  Adiabatic Cooling of Rising Air  Condensation and/or Deposition  Need something to condense or deposit upon: ◦ Condensation Nuclei ◦ Freezing Nuclei
  4. 4. ◦ Stratus clouds ◦ Cumulus clouds 4 Figure 6-15b Figure 6-15c
  5. 5. ◦ High clouds (> 6 km) ◦ Middle clouds (2 - 6 km) ◦ Low clouds (<2 km) ◦ Clouds of vertical development  Can grow up from low bases to>15 km 6 Figure 6-16
  6. 6. 23

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