1. Version 0.2, 16 January 2004 Slide: 1 APPLICATIONS OF METEOSAT SECOND GENERATION (MSG) SQUALL LINES Author:Jochen Kerkmann (EUMETSAT) (kerkmann@eumetsat.de) (kerkmann@eumetsat.de) Contributors:D. Rosenfeld (HUJ)

2. Version 0.2, 16 January 2004 Slide: 2 Squall Line over Western Africa 14 July 2003

3. Version 0.2, 16 January 2004 Slide: 3 MSG-1, 14 July 2003, 10:00 UTC Squall Line over Western Africa causing violent rainfall and sandstorms RGB NIR1.6-VIS0.8-VIS0.6 RGB VIS0.6-IR3.9-IR10.8

4. Version 0.2, 16 January 2004 Slide: 4 MSG-1, 14 July 2003, 02:00-08:45 UTC, IR10.8 Click on the image to see the animation ! Warm Cold

5. Version 0.2, 16 January 2004 Slide: 5 MSG-1, 14 July 2003, 02:00 UTC difference IR6.2 - IR 10.8 [K] difference IR7.3 - IR10.8 [K] Squall Line Global View

6. Version 0.2, 16 January 2004 Slide: 6 difference IR6.2 - IR 10.8 [K] difference IR7.3 - IR10.8 [K] MSG-1, 14 July 2003, 02:00 UTC Zoom on Western Africa Very high (overshooting) Tops

7. Version 0.2, 16 January 2004 Slide: 7 MSG-1 14 July 2003 02:00 UTC Difference Image IR6.2 - IR 7.3 Highest Tops

8. Version 0.2, 16 January 2004 Slide: 8 difference IR8.7 - IR 10.8 [K] difference IR3.9 - IR10.8 [K] MSG-1, 14 July 2003, 02:00 UTC Sand Storm Squall Line Global View

9. Version 0.2, 16 January 2004 Slide: 9 difference IR8.7 - IR 10.8 [K] difference IR3.9 - IR10.8 [K] MSG-1, 14 July 2003, 02:00 UTC Zoom on Western Africa Sand Storm Thin Cirrus Noise in Channel 04 Thick Ice Clouds

10. Version 0.2, 16 January 2004 Slide: 10 MSG-1, 14 July 2003, 02:00-08:30 UTC, difference IR8.7 - IR10.8 [K] Click on the image to see the animation !

11. Version 0.2, 16 January 2004 Slide: 11 MSG-1 14 July 2003 10:00 UTC RGB Composite R = WV6.2 - WV7.3 G = IR3.9 - IR10.8 B = NIR1.6 - VIS0.6 1=Very high, cold ice clouds with small ice particles (developing stage, intense precipitation) 2=very high, cold ice clouds with large ice particles (decaying stage) 3=Thin Cirrus 4=Altocumulus with thin borders 5= Sand storm 1 1 1 1 2 2 2 1 4 3 3 3 3 5

12. Version 0.2, 16 January 2004 Slide: 12 MSG-1 14 July 2003 10:00 UTC Channel 01 (VIS0.6) 1 1 1 1 2 2 1 2 3 3 3 3 4 5 1=Very high, cold ice clouds with small ice particles (developing stage, intense precipitation) 2=very high, cold ice clouds with large ice particles (decaying stage) 3=Thin Cirrus 4=Altocumulus with thin borders 5= Sand storm

13. Version 0.2, 16 January 2004 Slide: 13 MSG-1 14 July 2003 10:00 UTC Channel 09 (IR10.8) 1 1 1 1 2 2 1 2 3 3 3 3 4 5 1=Very high, cold ice clouds with small ice particles (developing stage, intense precipitation) 2=very high, cold ice clouds with large ice particles (decaying stage) 3=Thin Cirrus 4=Altocumulus with thin borders 5= Sand storm

14. Version 0.2, 16 January 2004 Slide: 14 MSG-1 14 July 2003 10:00 UTC Difference Image WV6.2 - WV7.3 1 1 1 1 1 2 2 2 3 3 3 3 4 5 1=Very high, cold ice clouds with small ice particles (developing stage, intense precipitation) 2=very high, cold ice clouds with large ice particles (decaying stage) 3=Thin Cirrus 4=Altocumulus with thin borders 5= Sand storm

15. Version 0.2, 16 January 2004 Slide: 15 MSG-1 14 July 2003 10:00 UTC Difference Image IR3.9 - IR10.8 1 1 1 1 1 2 2 2 3 3 3 3 4 5 1=Very high, cold ice clouds with small ice particles (developing stage, intense precipitation) 2=very high, cold ice clouds with large ice particles (decaying stage) 3=Thin Cirrus 4=Altocumulus with thin borders 5= Sand storm

16. Version 0.2, 16 January 2004 Slide: 16 MSG-1 14 July 2003 10:00 UTC Difference Image NIR1.6 - VIS0.6 1 1 1 1 1 2 2 2 3 3 3 3 4 5 1=Very high, cold ice clouds with small ice particles (developing stage, intense precipitation) 2=very high, cold ice clouds with large ice particles (decaying stage) 3=Thin Cirrus 4=Altocumulus with thin borders 5= Sand storm

17. Version 0.2, 16 January 2004 Slide: 17 MSG-1 14 July 2003 10:00 UTC Difference Image IR12.0 - IR10.8 1 1 1 1 1 2 2 2 3 3 3 3 4 5 1=Very high, cold ice clouds with small ice particles (developing stage, intense precipitation) 2=very high, cold ice clouds with large ice particles (decaying stage) 3=Thin Cirrus 4=Altocumulus with thin borders 5= Sand storm

18. Version 0.2, 16 January 2004 Slide: 18 MSG-1 14 July 2003 10:00 UTC Difference Image IR8.7 - IR10.8 1 1 1 1 1 2 2 2 3 3 3 3 4 5 1=Very high, cold ice clouds with small ice particles (developing stage, intense precipitation) 2=very high, cold ice clouds with large ice particles (decaying stage) 3=Thin Cirrus 4=Altocumulus with thin borders 5= Sand storm

19. Version 0.2, 16 January 2004 Slide: 19 MSG-1 14 July 2003 10:00 UTC Difference Image IR8.7 - IR10.8 1 1 1 1 1 2 2 2 3 3 3 3 4 5 1=Very high, cold ice clouds with small ice particles (developing stage, intense precipitation) 2=very high, cold ice clouds with large ice particles (decaying stage) 3=Thin Cirrus 4=Altocumulus with thin borders 5= Sand storm

20. Version 0.2, 16 January 2004 Slide: 20 MSG-1 14 July 2003 10:00 UTC RGB Composite R = IR12.0 - IR10.8 G = IR10.8 - IR3.9 B = WV7.3 - WV6.2 1 1 1 1 1 2 2 2 3 3 3 3 4 5 1=Very high, cold ice clouds with small ice particles (developing stage, intense precipitation) 2=very high, cold ice clouds with large ice particles (decaying stage) 3=Thin Cirrus 4=Altocumulus with thin borders 5= Sand storm

21. Version 0.2, 16 January 2004 Slide: 21 Squall Line over Central Africa 20 May 2003

22. Version 0.2, 16 January 2004 Slide: 22 MSG-1, 20 May 2003, 14:00 UTC, RGB VIS0.6 / IR3.9i / IR12.0i Effect of different enhancements Central African Republic Chad Dem. Republic of the Kongo Congo Sudan Squall Line Cameroon

23. Version 0.2, 16 January 2004 Slide: 23 MSG-1 20 May 2003 12:00 - 14:30 UTC RGB Composite R = VIS0.6 G = NIR1.6 B = IR3.9i Click on the image to see the animation !

24. Version 0.2, 16 January 2004 Slide: 24 SUMMARY

25. Version 0.2, 16 January 2004 Slide: 25 IR10.8 to get info on cloud top temperature/height WV6.2-IR10.8 and WV6.2-WV7.3 to identify highest tops HRVIS to see detailed structures NIR1.6 and IR3.9 (solar component) to get information on phase and particle size IR3.9 - IR10.8 to find areas with most intense development/precipitation RGBs to monitor cloud types and convective development: – RGB 01/03/09 (Day) or RGB 01/04/09 (Day) – RGB 05-06/04-09/03-01 (Day) – RGB 10-09/09-04/09 (Day & Night) – RGB 10-09/09-04/06-05 (Day & Night) Monitoring of Squall Lines