1. Radar-lidar retrievals of water cloud parameters
O. Krasnov, H. Russchenberg Delft University of Technology – IRCTR, The Netherlands

2. Radar-lidar technique
Input vars
Klett inversion
Lidar (b)
Z/a
Radar (Z)
-30
-20 -1
1.8
W.Clouds & Precipitation
Categorization
W.Cloud LWC=f1(Z)
MWRM’s LWP
L.Drizzle LWC=f2(Z)
H.Drizzle LWC=f3(Z) Z
Frisch retrievals
Validation
LWP(t)
LWC(t,H)

3. The limitation in optical extinction retrievals

4. The Histogramms for Optical Extinction and Thickness
May 19, 2003, Cabauw
July 04, 2003, Chilbolton
a < /m
a < /m

5. Optical thickness from lidar’s profile
Max optical extinction vs. Optical thickness
May 19, 2003, Cabauw
July 04, 2003, Chilbolton
Optical thickness from lidar’s profile
a < /m
a < /m

6. The cloud classification
The Reading’s «categorization» files

7. July 04, 2003, Chilbolton Reading’s classes in Z-a terms

8. July 04, 2003, Chilbolton
All obserations

9. July 04, 2003, Chilbolton
Class ICE

10. Class WATER = PRECIPITATION + WATER CLOUDS
July 04, 2003, Chilbolton
Class WATER = PRECIPITATION + WATER CLOUDS

11. July 04, 2003, Chilbolton
Class PRECIPITATION

12. July 04, 2003, Chilbolton
Class WATER CLOUDS

13. The Reading’s classification
July 04, 2003, Chilbolton

14. The Delft’s classification
July 04, 2003, Chilbolton

15. July 04, 2003, Chilbolton

16. July 05, 2003, Chilbolton

17. July 05, 2003, Chilbolton
All obserations

18. July 05, 2003, Chilbolton
Class ICE

19. Class WATER = PRECIPITATION + WATER CLOUDS
July 05, 2003, Chilbolton
Class WATER = PRECIPITATION + WATER CLOUDS

20. July 05, 2003, Chilbolton
Class PRECIPITATION

21. July 05, 2003, Chilbolton
Class WATER CLOUDS

22. The Reading’s classification
July 05, 2003, Chilbolton

23. The Delft’s classification
July 05, 2003, Chilbolton

24. July 05, 2003, Chilbolton

25. May 22, 2003, Cabauw

26. May 22, 2003, Cabauw
All observations

27. May 22, 2003, Cabauw
Class ICE

28. Class WATER = PRECIPITATION + WATER CLOUDS
May 22, 2003, Cabauw
Class WATER = PRECIPITATION + WATER CLOUDS

29. May 22, 2003, Cabauw
Class PRECIPITATION

30. May 22, 2003, Cabauw
Class WATER CLOUDS

31. The Reading’s classification
May 22, 2003, Cabauw

32. The Delft’s classification
May 22, 2003, Cabauw

33. May 22, 2003, Cabauw

34. The problem with «categorization» (?) or radiometer LWP retrievals (?)

37. LWC retrievals (Z/a)

38. May 02, 2003, Cabauw

39. May 09, 2003, Cabauw

40. May 19, 2003, Cabauw

41. May 19, 2003, UTC Cabauw

42. May 19, 2003, UTC Cabauw

43. May 21, 2003, UTC Cabauw

44. May 21, 2003, UTC Cabauw

45. July 04, 2003, Chilbolton

47. July 05, 2003, Chilbolton

49. MICCY, GKSS 95 GHz radar, Frisch method
BBC-1, , 9:42-10:42
MICCY, GKSS 95 GHz radar, Frisch method

50. Conclusions Database created
The statistical analysis of the lidar inversions shows some limitations - instruments comparison, cross-calibration (?)
The further development for clouds categorization technique is necessary (including Z/a ratio, cloud base height, water presence in ice regions)
LWC retrievals
Problems with poor water clouds still exist