# Material Based on Chapter 5 - PowerPoint PPT Presentation

Material Based on Chapter 5

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Material Based on Chapter 5

## Material Based on Chapter 5

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1. Material Based on Chapter 5 The Planetary Boundary Layer MT 454

2. The Planetary Boundary Layer Class Slide MT 454

3. Class Slide MT 454

4. Class Slide MT 454

5. Class Slide MT 454

6. Class Slide MT 454

7. Class Slide MT 454

8. Class Slide MT 454

9. Class Slide MT 454

10. Red = w’(t) Blue = q’(t) Class Slide MT 454

11. Class Slide MT 454

12. Class Slide MT 454

13. Class Slide MT 454

14. Class Slide MT 454

15. Class Slide is the radiative heating rate. Note: MT 454

16. Class Slide MT 454

17. Class Slide MT 454

18. Class Slide MT 454

19. Class Slide MT 454

20. Class Slide MT 454

21. Class Slide MT 454

22. Class Slide MT 454

23. Derive TKE Equation Similarly for v’ and w’

24. Class Slide MT 454

25. Class Slide • = Frictional dissipation (molecular diffusion) • > 0 TR = Redistribution by transport & pressure forces (no new TKE created) MT 454

26. Class Slide MT 454

27. Class Slide MT 454

28. Analogue in large-scale flow: Class Slide How does this circulation lower center of mass? MT 454

29. If PBL heated from below, then (z): BPL - TKE increase for unstable PBL BPL > 0 Primary energy source for unstable PBL (In stable PBL, BPL term gives energy loss) w’ < 0 ’ < 0 w’ > 0 ’ > 0 z 

30. More precise (z) when well-mixed PBL is fully developed. Homogeneous, well-mixed layer Unstable layer maintained near surface by surface heating BPL - Side Note z 

31. Class Slide MT 454

32. Class Slide MT 454

33. Class Slide MT 454

34. Class Slide MT 454

35. Class Slide MT 454

36. Class Slide MT 454

37. Class Slide MT 454

38. Class Slide MT 454

39. Class Slide MT 454

40. Class Slide MT 454

41. Class Slide MT 454

42. Class Slide (See figures) MT 454

43. Class Slide MT 454

44. Class Slide MT 454

45. Class Slide MT 454

46. Class Slide MT 454

47. Class Slide MT 454

48. Class Slide MT 454

49. Class Slide MT 454

50. Class Slide (Add friction? See Figure 5.3 in Holton.) MT 454