1. Version 0.3, 28 January 2004 Slide: 1 APPLICATIONS OF METEOSAT SECOND GENERATION (MSG) DETECTION OF CONTRAILS Author:Jochen Kerkmann (EUMETSAT) (kerkmann@eumetsat.de) (kerkmann@eumetsat.de) Contributors:D. Rosenfeld (HUJ), HP Roesli (MeteoSwiss)

2. Version 0.3, 28 January 2004 Slide: 2 Contrails over Southern Germany 26 September 2003

3. Version 0.3, 28 January 2004 Slide: 3 Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image 03-02-01 NIR1.6 / VIS0.8 / VIS0.6 Contrails

4. Version 0.3, 28 January 2004 Slide: 4 Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image 01-03-09 VIS0.6 / NIR1.6 / IR10.8 Contrails

5. Version 0.3, 28 January 2004 Slide: 5 Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image 01-04-09 VIS0.6 / IR3.9 / IR10.8 Contrails

6. Version 0.3, 28 January 2004 Slide: 6 Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image 02-03-04 VIS0.8 / NIR1.6 / IR3.9 Contrails

7. Version 0.3, 28 January 2004 Slide: 7 Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image 03-04-09 NIR1.6 / IR3.9 / IR10.8 Contrails

8. Version 0.3, 28 January 2004 Slide: 8 Contrails over Southern Germany MSG-1, 26 September 2003, 08:00 UTC Channel 01 (VIS0.6) Channel 02 (VIS0.8) Contrails

9. Version 0.3, 28 January 2004 Slide: 9 Contrails over Southern Germany MSG-1, 26 September 2003, 08:00 UTC Channel 03 (NIR1.6) Channel 04 (IR3.9) Contrails

10. Version 0.3, 28 January 2004 Slide: 10 Contrails over Southern Germany MSG-1, 26 September 2003, 08:00 UTC Channel 05 (WV6.2) Channel 06 (WV7.3) Contrails

11. Version 0.3, 28 January 2004 Slide: 11 Contrails over Southern Germany MSG-1, 26 September 2003, 08:00 UTC Channel 07 (IR8.7) Channel 08 (IR9.7) Contrails

12. Version 0.3, 28 January 2004 Slide: 12 Contrails over Southern Germany MSG-1, 26 September 2003, 08:00 UTC Channel 09 (IR10.8) Channel 10 (IR12.0) Contrails

13. Version 0.3, 28 January 2004 Slide: 13 Contrails over Southern Germany MSG-1, 26 September 2003, 08:00 UTC Channel 11 (IR13.4) Channel 12 (HRVIS) Contrails

14. Version 0.3, 28 January 2004 Slide: 14 MSG-1 26 September 2003 08:00-12:00 UTC HRV Channel Click on the image to see the animation ! Contrails over Southern Germany

15. Version 0.3, 28 January 2004 Slide: 15 Contrails over Southern Germany MSG-1 26 September 2003 09:00 - 12:00 UTC Channel NIR1.6 Click on the image to see the animation !

16. Version 0.3, 28 January 2004 Slide: 16 Contrails over Southern Germany MSG-1 26 September 2003 09:00 - 12:00 UTC Channel IR3.9 Click on the image to see the animation !

17. Version 0.3, 28 January 2004 Slide: 17 Contrails over Southern Germany 26 September 2003, 08:00 UTC Difference IR3.9 - IR10.8 Difference IR8.7 - IR10.8

18. Version 0.3, 28 January 2004 Slide: 18 Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC Difference Image IR12.0 - IR10.8 Contrails

19. Version 0.3, 28 January 2004 Slide: 19 Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC Difference Image IR12.0 - IR10.8 Contrails

20. Version 0.3, 28 January 2004 Slide: 20 Contrails over Southern Germany MSG-1 26 September 2003 08:00 UTC RGB Image HRV / HRV / IR12.0 - IR10.8 Contrails

21. Version 0.3, 28 January 2004 Slide: 21 Contrails over Southern Germany MSG-1 26 September 2003 09:30 UTC RGB Image NIR1.6 /VIS0.8 / VIS0.6

22. Version 0.3, 28 January 2004 Slide: 22 Contrails over Italy 13 June 2003

23. Version 0.3, 28 January 2004 Slide: 23 Contrails over the Thyrrhenian Sea MSG-1 13 June 2003 12:00 UTC Channel 12 (HRVIS) Contrails

24. Version 0.3, 28 January 2004 Slide: 24 Contrails over the Thyrrhenian Sea MSG-1 13 June 2003 12:00 UTC Difference Image IR12.0 - IR 10.8 Contrails

25. Version 0.3, 28 January 2004 Slide: 25 MSG-1, 13 June 2003, 12:00 UTC, RGB Composite HRV-HRV-IR 10.8i Contrails

26. Version 0.3, 28 January 2004 Slide: 26 Contrails over Northern Italy 19 November 2003

27. Version 0.3, 28 January 2004 Slide: 27 Shallow Fog and Contrails Comparison MSG-1 vs NOAA-16 Fog boundaries and contrails look very similar MSG HRV has very similar characteristic to NOAA VIS channels Contrails Fog

28. Version 0.3, 28 January 2004 Slide: 28 Contrails Comparison MSG-1 vs NOAA-16 In some cases, the MSG IR channels do not resolve thin contrails MSG IR10.8-IR12.0 NOAA AVHRR ch04-ch05 Contrails

29. Version 0.3, 28 January 2004 Slide: 29 SUMMARY

30. Version 0.3, 28 January 2004 Slide: 30 Detection of Contrails HRVIS: straight white lines (if no low-level clouds) or dark lines (shadow on lower clouds) IR12.0-IR10.8: dark lines RGB HRV/HRV/IR12.0-IR10.8: straight yellow lines over blueish clear ground Large contrails can be detected in VIS, IR and WV channels, and also in differences like IR3.9-IR10.8 and IR8.7-IR10.8, but they appear most clearly in: Contrails can be best observed from MSG in the early morning or late afternoon in the visible channels (low sun angle and shadows help)