1 / 44

METEOSAT SECOND GENERATION (MSG)

METEOSAT SECOND GENERATION (MSG). DUST DETECTION Author: Jochen Kerkmann kerkmann@eumetsat.de Contributors: H.-J. Lutz (EUMETSAT), HP. Roesli (MeteoSwiss) D. Rosenfeld (HUJ). Day-time Dust Storms over the Red Sea and the Middle East 25 June 2003. Dust Storms.

von
Download Presentation

METEOSAT SECOND GENERATION (MSG)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. METEOSAT SECOND GENERATION (MSG) DUST DETECTION Author: Jochen Kerkmann kerkmann@eumetsat.de Contributors: H.-J. Lutz (EUMETSAT), HP. Roesli (MeteoSwiss) D. Rosenfeld (HUJ)

  2. Day-time Dust Storms over the Red Sea and the Middle East 25 June 2003

  3. Dust Storms 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 a major dust storm over the Red Sea. The dust storm over theArabian Peninsula is not visible in VIS imagery.

  4. Dust Storms 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 a dust storm over the Arabian Peninsula.

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

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

  9. Dust Storms 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.

  10. Sulfur Plant Fire 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). Dust Storms

  11. Day-time 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 (HRV)

  18. Day-time Dust Storm over Algeria 14 July 2003

  19. MSG imagery showing a dust storm over Algeria, which was triggered by a major convetive storm (squall line) MSG-1 14 July 2003 08:45 UTC Channel 01 (VIS0.6)

  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 dust storm 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 dust storm 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 dust storm 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 dust storm over Algeria

  24. 3 Recommended RGBfor Monitoring ofDust Storms (day & night) 3 1= dust storm 2= clear ground 3 = low-level clouds 4 = thin high-level clouds 5 = thick high-level clouds 2 2 1 1 1 MSG-1 14 July 2003 10:00 UTC RGB Composite R = IR12.0 - IR10.8 G = IR10.8 - IR8.7 B = IR10.8 4 4 5

  25. Night-time Dust Storm over Algeria 14 July 2003

  26. 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 dust storm 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 imagery on 14 July 2003 at 02:00 UTC showing a dust storm over Algeria

  28. 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 dust storm over Algeria

  29. Click on the icon tosee the animation(02:00 - 08:30 UTC,AVI, 5475 KB) ! MSG-1 14 July 2003 02:00 UTC Difference Image IR8.7 - IR10.8 Monitoring of ice clouds, but also very useful for detecting dust storms over deserts (day and night).

  30. Click on the icon tosee the animation(02:00 - 08:30 UTC,AVI, 3305 KB) ! MSG-1 14 July 2003 02:00 UTC Difference Image IR8.7 - IR10.8 Same as previous slide, but different colour bar !

  31. Day-time Dust Storm overthe Mediterranean Sea 21 February 2004

  32. Click on the icon tosee the animation(07:00 - 12:00 UTC,GIF, 6134 KB) ! Dust MSG-1 21 February 2004 12:00 UTC RGB Composite R = HRV G = HRV B = IR10.8i

  33. Recommended RGB for Monitoring of Dust Storms (day & night) Thick high-level ice clouds Dust Thin high-level ice clouds Dust MSG-1 21 February 2004 13:00 UTC RGB Composite R = IR12.0-IR10.8 G = IR10.8-IR8.7 B = IR10.8

  34. Day & Night-time Dust Storm overWestern Africa and the Canary Islands 02-04 March 2004

  35. Click on the icon tosee the animation(reduced resolution,02-03 March 2004,12:00 - 12:00 UTC,AVI, 21097 KB) ! Contrails MSG-1 03 March 2004 12:00 UTC RGB Composite R = IR12.0-IR10.8 G = IR10.8-IR8.7 B = IR10.8 Dust

  36. Click on the icon tosee the animation(12:00 - 18:00 UTC,AVI, 9846 KB) ! Gravity waves in the lee of Fuerteventura MSG-1 3 March 2004 17:00 UTC Channel 12 (HRV) Dust flows around Gran Canaria and Tenerife

  37. Click on the icon tosee the animation(12:45 - 19:00 UTC,AVI, 9144 KB) ! Snow MSG-1 3 March 2004 17:00 UTC RGB Composite R = NIR1.6 G = VIS0.8 B = VIS0.6 Dust flows around Gran Canaria and Tenerife

  38. Sahara Dust Outbreak across the Atlantic Ocean 04-10 March 2004

  39. Click for full res. (JPG, 3305 KB) Click for full res. (JPG, 3971 KB) RGB IR12.0-IR10.8, IR10.8-IR8.7, IR10.8 RGB NIR1.6, VIS0.8, VIS0.6 "Dust RGB" "Natural Colours RGB" MSG-1, 04 March 2004, 12:00 UTC

  40. Click for full res. (JPG, 3327 KB) Click for full res. (JPG, 3992 KB) RGB IR12.0-IR10.8, IR10.8-IR8.7, IR10.8 RGB NIR1.6, VIS0.8, VIS0.6 "Dust RGB" "Natural Colours RGB" MSG-1, 06 March 2004, 12:00 UTC

  41. Click for full res. (JPG, 3170 KB) Click for full res. (JPG, 3865 KB) RGB IR12.0-IR10.8, IR10.8-IR8.7, IR10.8 RGB NIR1.6, VIS0.8, VIS0.6 "Dust RGB" "Natural Colours RGB" MSG-1, 08 March 2004, 12:00 UTC

  42. SUMMARY

  43. Detection of Dust Storms over Deserts during Day-time • dust storms over deserts can be detected in 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 • Recommended RGB: IR12.0-IR10.8, IR10.8-IR8.7, IR10.8

  44. 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. 12.0-10.8 also useful • Diff. 3.9-10.8 less useful • Recommended RGB: IR12.0-IR10.8, IR10.8-IR8.7, IR10.8

More Related