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METEOSAT SECOND GENERATION (MSG)

METEOSAT SECOND GENERATION (MSG). DUST DETECTION Author: Jochen Kerkmann kerkmann@eumetsat.de Contributors: H.-J. Lutz (EUMETSAT). Dust Storm over the Red Sea 25 June 2003. Channel 01 (0.6  m) Channel 02 (0.8  m) Channel 03 (1.6  m).

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METEOSAT SECOND GENERATION (MSG)

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  1. METEOSAT SECOND GENERATION (MSG) DUST DETECTION Author: Jochen Kerkmann kerkmann@eumetsat.de Contributors: H.-J. Lutz (EUMETSAT)

  2. Dust Storm over the Red Sea 25 June 2003

  3. Channel 01 (0.6 m) Channel 02 (0.8 m) Channel 03 (1.6 m) MSG VIS imagery on 25 June 2003 at 10:00 UTC showing major duststorms over the Red Sea and the Arabian Peninsula.

  4. Channel 04 (3.9 m) Channel 07 (8.7 m) Channel 09 (10.8 m) MSG IR imagery on 25 June 2003 at 10:00 UTC showing major duststorms over the Red Sea and the Arabian Peninsula.

  5. Mali Guinea MSG-1 25 June 2003 10:00 UTC RGB Composite R = NIR1.6 G = VIS0.8 B = VIS0.6

  6. Mali Guinea MSG-1 25 June 2003 10:00 UTC RGB Composite R = VIS0.6 G = NIR1.6 B = IR3.9

  7. MSG-1 25 June 2003 10:00 UTC Channel 12 (HRVIS)

  8. Mali MSG-1 25 June 2003 10:00 UTC Difference Image Channels NIR1.6 - VIS0.6 Monitoring of thick ice clouds (like Cb and Ns). Thin Cirrus and dust over desert are not detected. Guinea

  9. Mali MSG-1 25 June 2003 10:00 UTC Difference Image Channels IR3.9 - IR10.8 Monitoring of fires and fog, but also useful for the detection of dust storms over deserts. Guinea

  10. Mali MSG-1 25 June 2003 10:00 UTC Difference Image Channels IR8.7 - IR10.8 Monitoring of thin Cirrus clouds, but also useful for detecting dust storms over deserts (day and night). Guinea

  11. Dust Storm over Niger 7 July 2003

  12. MSG imagery showing a duststorm over Niger MSG-1 7 July 2003 11:00 UTC Channel 01 (0.6 m)

  13. Channel 01 (0.6 m) Channel 02 (0.8 m) Channel 03 (1.6 m) MSG VIS imagery on 7 July 2003 at 11:00 UTC showing a duststorm over Niger

  14. Channel 07 (8.7 m) Channel 08 (9.7 m) Channel 09 (10.8 m) MSG IR imagery on 7 July 2003 at 11:00 UTC showing a duststorm over Niger

  15. Diff. 3.9 m - 10.8 m Diff. 8.7 m - 10.8 m Diff. 12.0 m - 10.8 m MSG imagery on 7 July 2003 at 11:00 UTC showing a duststorm over Niger

  16. Diff. 8.7 m - 10.8 m Diff. 12.0 m - 10.8 m MSG enhanced imagery on 7 July 2003 at 11:00 UTC showing a duststorm over Niger

  17. MSG imagery showing a duststorm over Niger MSG-1 7 July 2003 11:00 UTC Channel 12 (HRVIS)

  18. Dust Storm over Algeria 14 July 2003

  19. MSG imagery showing a duststorm over Algeria, which was triggered by a major convetive storm (squall line) MSG-1 14 July 2003 08:45 UTC Channel 01 (0.6 m)

  20. Channel 01 (0.6 m) Channel 02 (0.8 m) Channel 03 (1.6 m) MSG VIS imagery on 14 July 2003 at 08:45 UTC showing a duststorm over Algeria

  21. Channel 07 (8.7 m) Channel 08 (9.7 m) Channel 09 (10.8 m) MSG IR imagery on 14 July 2003 at 08:45 UTC showing a duststorm over Algeria

  22. Diff. 3.9 m - 10.8 m Diff. 8.7 m - 10.8 m Diff. 12.0 m - 10.8 m MSG imagery on 14 July 2003 at 08:45 UTC showing a duststorm over Algeria

  23. Diff. 3.9 m - 10.8 m Diff. 8.7 m - 10.8 m Diff. 12.0 m - 10.8 m MSG enhanced imagery on 14 July 2003 at 08:45 UTC showing a duststorm over Algeria

  24. MSG-1 14 July 2003 08:45 UTC RGB Composite R = IR12.0 - IR10.8 G = IR8.7 - IR10.8 B = IR3.9 - IR10.8

  25. Channel 07 (8.7 m) Channel 08 (9.7 m) Channel 09 (10.8 m) MSG IR imagery on 14 July 2003 at 02:00 UTC showing a duststorm over Algeria

  26. Diff. 3.9 m - 10.8 m Diff. 8.7 m - 10.8 m Diff. 12.0 m - 10.8 m MSG imagery on 14 July 2003 at 02:00 UTC showing a duststorm over Algeria

  27. Diff. 3.9 m - 10.8 m Diff. 8.7 m - 10.8 m Diff. 12.0 m - 10.8 m MSG enhanced imagery on 14 July 2003 at 02:00 UTC showing a duststorm over Algeria

  28. MSG-1 14 July 2003 02:00-08:30 UTC Animation of Difference Images IR8.7 - IR10.8 Monitoring of thin Cirrus clouds, but also very useful for detecting dust storms over deserts. Click on the image to see the animation !

  29. MSG-1 14 July 2003 02:00-08:30 UTC Animation of Difference Images IR8.7 - IR10.8 Click on the image to see the animation !

  30. SUMMARY

  31. Detection of Dust Storms over Deserts during Day-time • dust storms over deserts can be detectedin VIS and IR • VIS0.6 better than VIS0.8 • NIR1.6 not useful (desert dust “transparent” at1.6-2.0 µm) • IR10.8 best single IR channel (thermal IR technique) • IR9.7 also useful !!! • Diff. 8.7-10.8 and 3.9-10.8 give the best results • Diff. 12.0-10.8 (used for GOES) also good, but not during night

  32. Detection of Dust Storms over Deserts during Night-time • dust storms difficult to detect in IR (only in animation) • IR8.7 best IR channel (different emission coefficients) • Diff. 8.7-10.8 gives the best results and detects dust very well (over deserts) • Diff. 3.9-10.8 and 12.0-10.8 less useful

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