1. Cloud Formation Mechanisms

12. A little quiz…

21. Cloud Formation Mechanisms

22. Cloud Formation: In General Moist air cools to dew point. Dew Point = temp. for saturation of air. When air temp < DP, air is supersaturated. Condensation or sublimation occurs. Air must be lifted to get it to cool.

23. Methods of Lifting Orographic lifting Frontal action Convergence Convection

24. Orographic Lifting Warm Moist Air Dew Point

25. Orographic Clouds over Santa Catalina Mountains

26. Warm Frontal Action Warm Moist Air Cold Dense Air Surface of Ground Dew Point

27. Cold Front Action Surface of Ground Warm Moist Air Cold Dense Air Dew Point

28. Cold Front Clouds Forming

29. Convergence Surface of Ground Dew Point

30. ITCZ Wind Convergence & Clouds ITCZ Clouds Northeast Trades Southeast Trades

31. Cyclonic Convergence L L

32. Convection Radiation Convection

33. Convection Clouds

34. Convection Over Lake Michigan Warm Water Cold Air Warmed Air Conduction Convection

36. Methods of Lifting Orographic lifting Frontal action Convergence Convection L