1. Version 0.3, 20 January 2004 Slide: 1 APPLICATIONS OF METEOSAT SECOND GENERATION (MSG) DAY-TIME CONVECTION Author:Jochen Kerkmann (EUMETSAT) (kerkmann@eumetsat.de) (kerkmann@eumetsat.de) Contributors:D. Rosenfeld (HUJ)

2. Version 0.3, 20 January 2004 Slide: 2 Note: in this Powerpoint presentation (in most cases) the SEVIRI images are not inverted, i.e. displayed as solar channels. If a channel is inverted, this is denoted by the small letter "i".

3. Version 0.3, 20 January 2004 Slide: 3 PART 1: MSG SEVIRI CHANNELS USEFUL TO MONITOR CONVECTION DAY-TIME

4. Version 0.3, 20 January 2004 Slide: 4 Recommended Channels HRVISfine-scale structures VIS0.6optical thickness of clouds NIR1.6particle size and phase IR3.9particle size and phase WV6.2upper-level moisture WV7.3mid-level moisture, early convection IR10.8top temperature

5. Version 0.3, 20 January 2004 Slide: 5 MSG-1 23 April 2003 17:00 UTC Channel 12 (HRVIS) Ghana HRVIS Fine Scale Structures Cirrus Outflow Overshooting Top

6. Version 0.3, 20 January 2004 Slide: 6 MSG-1 8 June 2003 13:00 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Cloud Streets The Channel

7. Version 0.3, 20 January 2004 Slide: 7 MSG-1 8 June 2003 15:00 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Orographic Convection Spain Orographic Convection

8. Version 0.3, 20 January 2004 Slide: 8 MSG-1 5 August 2003 16:30 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Spain Spanish Plume

9. Version 0.3, 20 January 2004 Slide: 9 MSG-1 7 August 2003 16:30 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Lac Leman ShadowMesoscale Convective System Single Cb

10. Version 0.3, 20 January 2004 Slide: 10 MSG-1 13 June 2003 12:00 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Mesoscale Convective System Po Valley Thin Cirrus Cloud Streets Coastal Convergence

11. Version 0.3, 20 January 2004 Slide: 11 MSG-1 13 June 2003 12:00 UTC Channel 12 (HRVIS) HRVIS Fine Scale Structures Cloud Streets Coastal Convergence

12. Version 0.3, 20 January 2004 Slide: 12 MSG-1 5 June 2003 14:45 UTC Channel 01 (VIS0.6) VIS0.6 Optical Thickness Thick Cb CloudThin Cirrus Anvil

13. Version 0.3, 20 January 2004 Slide: 13 MSG-1 5 June 2003 14:45 UTC Channel 03 (NIR1.6) NIR1.6 Particle Size and Phase Small Ice Particles Large Ice Particles Water Clouds

14. Version 0.3, 20 January 2004 Slide: 14 MSG-1 5 June 2003 14:45 UTC Channel 04 (IR3.9) IR3.9 Particle Size and Phase Small Ice Particles Large Ice Particles Water Clouds

15. Version 0.3, 20 January 2004 Slide: 15 MSG-1 5 June 2003 14:45 UTC Channel 06i (WV7.3) WV7.3 Mid-Level Moisture Dark Stripe High Mid-Level Moisture

16. Version 0.3, 20 January 2004 Slide: 16 MSG-1 5 June 2003 14:45 UTC Channel 09 (IR10.8) IR10.8 Top Temperature Warm Clouds Cold Clouds

17. Version 0.3, 20 January 2004 Slide: 17 PART 2: CHANNEL DIFFERENCES USEFUL TO MONITOR CONVECTION DAY-TIME

18. Version 0.3, 20 January 2004 Slide: 18 Recommended Differences NIR1.6 - VIS0.6optical thickness, phase, particle size IR3.9 - IR10.8optical thickness, phase, particle size, emissivity IR8.7 - IR10.8optical thickness IR12.0 - IR10.8optical thickness WV6.2 - IR10.8overshooting tops WV6.2 - WV7.3overshooting tops

19. Version 0.3, 20 January 2004 Slide: 19 MSG-1 5 June 2003 14:45 UTC Difference Image NIR1.6 - VIS0.6

20. Version 0.3, 20 January 2004 Slide: 20 MSG-1 5 June 2003 14:45 UTC Difference Image (NIR1.6 - VIS0.6)i Note: same as previous image, but black/white inverted (i = inverted)

21. Version 0.3, 20 January 2004 Slide: 21 MSG-1 5 June 2003 14:45 UTC Difference Image IR3.9 - IR10.8

22. Version 0.3, 20 January 2004 Slide: 22 MSG-1 5 June 2003 14:45 UTC Difference Image IR8.7 - IR10.8

23. Version 0.3, 20 January 2004 Slide: 23 MSG-1 5 June 2003 14:45 UTC Difference Image IR12.0 - IR10.8

24. Version 0.3, 20 January 2004 Slide: 24 MSG-1 5 June 2003 14:45 UTC Difference Image WV6.2 - IR10.8

25. Version 0.3, 20 January 2004 Slide: 25 MSG-1 5 June 2003 14:45 UTC Difference Image WV6.2 - WV7.3

26. Version 0.3, 20 January 2004 Slide: 26 MSG-1 5 June 2003 14:45 UTC Difference Image WV6.2 - IR10.8

27. Version 0.3, 20 January 2004 Slide: 27 MSG-1 5 June 2003 14:45 UTC Difference Image WV6.2 - WV7.3

28. Version 0.3, 20 January 2004 Slide: 28 PART 3: RECOMMENDED RED-GREEN-BLUE (RGB) COLOUR COMPOSITES FOR MONITORING CONVECTION DAY-TIME

29. Version 0.3, 20 January 2004 Slide: 29 Recommended RGBs Daytime Red: Cloud depth and amount of cloud water and ice, provided by the visible reflectance at 0.6  m. Green:Cloud particle size and phase, approximated by the 1.6  m or 3.9  m solar reflectance component. Blue:Temperature, provided by the 10.8  m channel.

30. Version 0.3, 20 January 2004 Slide: 30 Recommended RGBs Daytime - HRVIS Red: Cloud optical depth and detailed cloud top structures, provided by the HRVIS channel. Green:Cloud optical depth and detailed cloud top structures, provided by the HRVIS channel. Blue:Temperature, provided by 10.8  m, or cloud particle size and phase, provided by the NIR1.6 or IR3.9 channel.

31. Version 0.3, 20 January 2004 Slide: 31 Typical Convective Development - Daytime - VIS0.6NIR1.6IR3.9IR10.8 I. Very early stagewhitewhitewhitelight grey (low, warm water cloud)opt thickwaterwaterwarm II. First convection*whitewhitewhitedark grey (first convective towers)opt thicksupercooledsupercooledcoldwater III. First icingwhitelight greygreyblack (transformation in Cb)opt thicksmall icesmall icevery cold IV. Large icingwhitedark greyblackblack (Cb anvils)opt thicklarge icelarge icevery cold *This phase is more frequent in Africa, i.e. it is more easy to find examples for this phase in tropical convection

32. Version 0.3, 20 January 2004 Slide: 32 RedGreenBlue VIS0.6IR3.9IR10.8RGB I. Very early stage255255200white-light yellow II. First convection255255100yellow III. First icing2551500orange IV. Large icing25500red RGB 01-04-09

33. Version 0.3, 20 January 2004 Slide: 33 RGB 0.6 / 3.9 / 10.8 I. Very early stagewhite-light yellow II. First convectionyellow III. First icingorange IV. Large icingred I II III IV RGB 01-04-09

34. Version 0.3, 20 January 2004 Slide: 34 RedGreenBlue VIS0.6NIR1.6IR10.8RGB I. Very early stage255255200white-light yellow II. First convection255255100yellow III. First icing2552000orange IV. Large icing2551000red-orange RGB 01-03-09

35. Version 0.3, 20 January 2004 Slide: 35 II. First Convection (Supercooled Clouds) MSG-1, 5 June 2003, 10:00 UTC, RGB 01-03-09 Supercooled Water Clouds

36. Version 0.3, 20 January 2004 Slide: 36 III. First Icing MSG-1, 5 June 2003, 10:30 UTC, RGB 01-03-09 Cb Icing

37. Version 0.3, 20 January 2004 Slide: 37 IV. Large Icing MSG-1, 5 June 2003, 11:30 UTC, RGB 01-03-09 Large Ice Small Ice

38. Version 0.3, 20 January 2004 Slide: 38 V. Very Large Icing MSG-1, 5 June 2003, 13:30 UTC, RGB 01-03-09 Large Ice

39. Version 0.3, 20 January 2004 Slide: 39

40. Version 0.3, 20 January 2004 Slide: 40 Low red: Dark and thin clouds

41. Version 0.3, 20 January 2004 Slide: 41

42. Version 0.3, 20 January 2004 Slide: 42 RedGreenBlue NIR1.6IR3.9IR10.8RGB I. Very early stage255255200white-light yellow II. First convection255255100yellow III. First icing2001500brown IV. Large icing10000dark brown Other RGBs: 03-04-09

43. Version 0.3, 20 January 2004 Slide: 43 RedGreenBlue VIS0.6NIR1.6IR3.9RGB I. Very early stage255255255white II. First convection255255255white III. First icing255200150khaki-brown IV. Large icing2551000red-orange Other RGBs: 01-03-04

44. Version 0.3, 20 January 2004 Slide: 44 -RGB HRV - HRV - IR10.8 (12-12-09) -RGB HRV - HRV - IR3.9 (12-12-04) -RGB HRV - HRV - NIR1.6 (12-12-03) RGBs with the HRVIS Channel

45. Version 0.3, 20 January 2004 Slide: 45 MSG-1, 5 June 2003, 14:45 UTC Channel 12 (HRV) RGB HRV-HRV-IR10.8i

46. Version 0.3, 20 January 2004 Slide: 46 MSG-1, 5 June 2003, 14:45 UTC Channel 12 (HRV) RGB HRV-HRV-IR3.9i

47. Version 0.3, 20 January 2004 Slide: 47 MSG-1, 5 June 2003, 14:45 UTC Channel 12 (HRV) RGB HRV-HRV-NIR1.6

48. Version 0.3, 20 January 2004 Slide: 48 Channel 12 (HRV) RGB HRV-HRV-IR10.8i MSG-1, 8 September 2003, 15:00 UTC

49. Version 0.3, 20 January 2004 Slide: 49 Channel 12 (HRV) RGB HRV-HRV-IR3.9i MSG-1, 8 September 2003, 15:00 UTC

50. Version 0.3, 20 January 2004 Slide: 50 Channel 12 (HRV) RGB HRV-HRV-NIR1.6 MSG-1, 8 September 2003, 15:00 UTC

51. Version 0.3, 20 January 2004 Slide: 51 -RGB 01-03 04-09 06-05 RGBs with Difference Images

52. Version 0.3, 20 January 2004 Slide: 52 MSG-1 5 June 2003 14:45 UTC RGB Composite R = VIS0.6 - NIR1.6 G = IR3.9 - IR10.8 B = WV7.3 - WV6.2