Lecture Week 8: Topics

Weather Observation & Analysis Project - Report writing tips

Stability and Cloud Formation - continued

Condensation and Cloud Formation

[REF: AJJ12 Ch 7 / AJJ16 Ch 7 p 180-182]

• supersaturation
• condensation nucleii
• curvature effect
• solute effect
• growth of droplets - critical radius
• relative sizes of droplets

Precipitation Formation

[REF: AJJ12 Ch 7 / AJJ16 Ch 7 p 182-186, 195-198]

• coalescence or capture
  • direct capture
  • wake capture
• Ice-Crystal or Bergeron Process
• Active Figure 7.10 (Bergeron Process)
  • distribution of ice in clouds
  • supercooled cloud water
• cloud seeding
• freezing rain formation
• precipitation types: rain, snow, ice pellets, etc.
• Active Figure 7.20 (formation of rain, snow, freezing rain, etc.)
• measuring precipitation