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APPLICATIONS OF METEOSAT SECOND GENERATION (MSG)

APPLICATIONS OF METEOSAT SECOND GENERATION (MSG). RGB IMAGES: PART 04 RGB COMPOSITES WITH CHANNELS 01-11 AND THEIR INTERPRETATION Author: Jochen Kerkmann (EUMETSAT) jochen.kerkmann@eumetsat.int Contributors: D. Rosenfeld (HUJ), G. Bridge (EUM). PART 4:

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APPLICATIONS OF METEOSAT SECOND GENERATION (MSG)

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  1. APPLICATIONS OF METEOSAT SECOND GENERATION (MSG) RGB IMAGES: PART 04 RGB COMPOSITES WITH CHANNELS01-11 AND THEIR INTERPRETATION Author: Jochen Kerkmann (EUMETSAT) jochen.kerkmann@eumetsat.int Contributors: D. Rosenfeld (HUJ), G. Bridge (EUM)

  2. PART 4: RED-GREEN-BLUE COLOUR COMPOSITES WITH CHANNELS 01 - 11AND THEIR INTERPRETATION

  3. Recommended Schemes forRGB Image Composites RGB Composite Applications Time RGB 03,02,01: Vegetation, Snow, Smoke, Dust, Fog Day RGB 02,04r,09: Clouds, Convection, Snow, Fog, Fires Day RGB 02,03,04r: Snow, Fog Day RGB 05-06,04-09,03-01: Severe Convection Day RGB 10-09,09-04,09: Clouds, Fog, Contrails Night RGB 10-09,09-07,09: Dust, Thin Clouds, Contrails Day & Night RGB 05-06,08-09,05 Severe Cyclones, Jets, PV Analysis Day & Night 1. 2. 3. 4. 5. 6. 7.

  4. 1. RGB 03, 02, 01 ("Day Natural Colours") R = Channel 03 (NIR1.6) G = Channel 02 (VIS0.8) B = Channel 01 (VIS0.6) Applications: Vegetation, Dust, Smoke, Fog, Snow Area: Full MSG Viewing Area Time: Day-Time

  5. 1. RGB 03, 02, 01 ("Day Natural Colours") Recommended Range and Enhancement: Beam Channel Range Gamma Gamma2 Red 03 (NIR1.6) 0 …+100 % 1.0 1.0 Green 02 (VIS0.8) 0 ... +100 % 1.0 1.0 Blue 01 (VIS0.6) 0 ... +100 % 1.0 1.0

  6. Ch.03 NIR1.6 Ch.02 VIS0.8 Ch.01 VIS0.6

  7. RGB 03, 02, 01 Example: Snow NIR1.6 VIS0.8 VIS0.6 In RGB 03,02,01 images, snow appears in cyan colour ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  8. RGB 03, 02, 01 Example: Snow MSG-1, 18 February 2003, 13:00 UTC

  9. RGB 03, 02, 01 Example: Vegetation NIR1.6 VIS0.8 VIS0.6 In RGB 03,02,01 images, vegetation appears in greenish colours ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  10. RGB 03, 02, 01 Example: Vegetation MSG-1, 23 June 2003, 15:00 UTC

  11. RGB 03, 02, 01 Example: Desert NIR1.6 VIS0.8 VIS0.6 In RGB 03,02,01 images, deserts appear in reddish colours ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  12. RGB 03, 02, 01 Example: Desert MSG-1, 3 February 2004, 11:30 UTC

  13. RGB 03, 02, 01 Example: Low-level Water Clouds (St, Sc) NIR1.6 VIS0.8 VIS0.6 In RGB 03,02,01 images, low water clouds with small droplets appear in whitish-pinkish colours ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  14. RGB 03, 02, 01 Example: Low-level Water Clouds (St, Sc) MSG-1, 03 February 2004, 11:30 UTC

  15. RGB 03, 02, 01 Global View MSG-1 19 April 2005 12:00 UTC

  16. RGB 03, 02, 01:Interpretation of Colours High-level ice clouds Low-level water clouds Ocean Veg. Land Desert Snow

  17. 2. RGB 02, 04r, 09 ("Day Microphysical") R = Channel 02 (VIS0.8) G = Channel 04r (IR3.9, solar component) B = Channel 09 (IR10.8) Applications: Cloud Analysis, Convection, Fog, Snow, Fires Area: Full MSG Viewing Area Time: Day-Time

  18. 2. RGB 02, 04r, 09 ("Day Microphysical") Recommended Range and Enhancement (Summer): Beam Channel Range Gamma Gamma2 Red 02 (VIS0.8) 0 …+100 % 1.0 1.0 Green 04r (IR3.9r) 0 ... +60 % 2.5 1.0 Blue 09 (IR10.8) +203 ... +323 K 1.0 1.0

  19. 2. RGB 02, 04r, 09 ("Day Microphysical") Recommended Range and Enhancement (Winter): Beam Channel Range Gamma Gamma2 Red 02 (VIS0.8) 0 …+100 % 1.0 1.0 Green 04r (IR3.9r) 0 ... +25 % 1.5 1.0 Blue 09 (IR10.8) +203 ... +323 K 1.0 1.0

  20. Ch.02 VIS0.8 Ch.04r IR3.9r Ch.09 IR10.8 MSG-1, 8 September 2003, 12:00 UTC RGB Composite 02, 04r, 09 "winter" enhancement(see previous slide)

  21. RGB 02, 04r, 09 Example:Severe Convection VIS0.8 IR3.9r IR10.8 In RGB 02,04r,09 images, cold Cb clouds with small ice particles appear in light orange colours ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  22. RGB 02, 04r, 09 Example:Severe Convection MSG-1, 20 May 2003, 13:30 UTC ("winter" enhancement)

  23. RGB 02, 04r, 09 Example: Ship Trails VIS0.8 IR3.9r IR10.8 In RGB 02,04r,09 images, ship trails (small droplets) appear in whitish - light bluish colours ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  24. RGB 02, 04r, 09 Example: Ship Trails MSG-1, 7 September 2003, 11:45 UTC ("winter" enhancement)

  25. RGB 02, 04r, 09 Example: Fires VIS0.8 IR3.9r IR10.8 In RGB 02,04r,09 images, forest fires appear in cyan colour ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  26. RGB 02, 04r, 09 Example: Fires MSG-1, 7 September 2003, 11:45 UTC ("winter" enhancement)

  27. RGB 02, 04r, 09:Physical Interpretation for Clouds Red: Cloud depth and amount of cloud water and ice, provided by the visible reflectance at 0.8 mm. Green: Cloud particle size and phase, approximated by the 3.9 mm solar reflectance component. Blue: Temperature, provided by the 10.8 mm channel.

  28. Thin Cirrus cloud (large ice particles) Thin Cirrus cloud (small ice particles) Ocean Veg. Land Fires / Desert Snow RGB 02, 04r, 09: Interpretation of Coloursfor High-level Clouds Deep precipitating cloud (precip. not necessarily reaching the ground) - bright, thick - large ice particles - cold cloud Deep precipitating cloud (Cb cloud with strong updrafts and severe weather)* - bright, thick - small ice particles - cold cloud *or thick, high-level lee cloudiness with small ice particles

  29. Ocean Veg. Land Fires / Desert Snow RGB 02, 04r, 09: Interpretation of Coloursfor Mid-level Clouds Supercooled, thick water cloud - bright, thick - large droplets Supercooled, thick water cloud - bright, thick - small droplets Supercooled thin water cloud with large droplets Supercooled, thin water cloud with small droplets * * or, in rare occasions, thin Ci cloud with small ice particles

  30. Ocean Veg. Land Fires / Desert Snow RGB 02, 04r, 09: Interpretation of Coloursfor Low-level Clouds Thick water cloud (warm rain cloud) - bright, thick - large droplets Thick water cloud (no precipitation) - bright, thick - small droplets Thin water cloud withlarge droplets Thin water cloud with small droplets

  31. 3. RGB 02, 03, 04r ("Day Solar") R = Channel 02 (VIS0.8) G = Channel 03 (NIR1.6) B = Channel 04r (IR3.9r, solar component) Applications: Fog/Low Clouds, Snow Area: Mid-High Latitudes Time: Day-Time in Winter

  32. 3. RGB 02, 03, 04r ("Day Solar") Recommended Range and Enhancement: Beam Channel Range Gamma Gamma2 Red 02 (VIS0.8) 0 …+100 % 1.7 1.0 Green 03 (NIR1.6) 0 ... +70 % 1.7 1.0 Blue 04r (IR3.9r) 0 … +30 % 1.7 1.0

  33. Ch.02 VIS0.8 Ch.03 NIR1.6 Ch.04r IR3.9r MSG-1, 24 February 2003, 11:00 UTC RGB Composite 02, 03, 04r

  34. RGB 02, 03, 04r Example: Snow VIS0.8 NIR1.6 IR3.9r In RGB 02,03,04r images, snow appears in reddish colours ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  35. RGB 02, 03, 04r Example: Snow MSG-1, 26 January 2004, 10:00 UTC

  36. RGB 02, 03, 04r Example: Low Clouds VIS0.8 NIR1.6 IR3.9r In RGB 02,03,04r images, low-level cloudsappear in whitish colours ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  37. RGB 02, 03, 04r Example: Low Clouds MSG-1, 26 January 2004, 10:00 UTC

  38. RGB 02, 03, 04r: Interpretation of Coloursfor Thick Ice and Water Clouds Deep precipitating cloud (precip. not necessarily reaching the ground) - bright, thick - large ice particles Deep precipitating cloud* - bright, thick - small ice particles *or thick, high-level lee cloudiness with small ice particles Thick water cloud withlarge droplets Thick water cloud with small droplets Ocean Veg. Land Desert Snow

  39. 4. RGB 05-06, 04-09, 03-01 ("Convective Storms") R = Difference WV6.2 - WV7.3 G = Difference IR3.9 - IR10.8 B = Difference NIR1.6 - VIS0.6 Applications: Severe Convective Storms Area: Full MSG Viewing Area Time: Day-Time

  40. 4. RGB 05-06, 04-09, 03-01 ("Convective Storms") Recommended Range and Enhancement: Beam Channel Range Gamma Gamma2 Red WV6.2 - WV7.3 -35 … +5 1.0 1.0 Green IR3.9 - IR10.8 -5 … +60 0.5 1.0 Blue NIR1.6 - VIS0.6 -75 … +25 1.0 1.0

  41. Ch.05 -Ch.06 Ch.04 -Ch.09 Ch.03 -Ch.01 MSG-1, 8 September 2003, 12:00 UTC RGB Composite 05-06, 04-09, 03-01

  42. RGB 05-06, 04-09, 03-01 Example:Severe Convection 05 - 06 04 - 09 03 - 01 In RGB 05-06,04-09,03-01 images, cold Cb tops with small ice particles appear in yellowish colours ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  43. RGB 05-06, 04-09, 03-01 Example:Severe Convection RGB 02,04r,09 RGB 05-06,04-09,03-01 (for comparison) better identification of young, severe storms MSG-1, 20 May 2003, 13:30 UTC

  44. RGB 05-06, 04-09, 03-01 Example:Convection 05 - 06 04 - 09 03 - 01 In RGB 05-06,04-09,03-01 images, cold Cbs with large ice particles appear in reddish colours ! The values shown above (in the red box) correspond tothe location (shown by an arrow) on the next slide !

  45. RGB 05-06, 04-09, 03-01 Example:Convection RGB 02,04r,09 RGB 05-06,04-09,03-01 (for comparison) better identification of young, severe storms MSG-1, 20 May 2003, 13:30 UTC

  46. RGB 05-06, 04-09, 03-01 Example:Severe Convection RGB 02,04r,09 RGB 05-06,04-09,03-01 (for comparison) better identification of young, severe storms MSG-1, 13 June 2003, 12:00 UTC

  47. RGB 05-06, 04-09, 03-01 Example:Severe Convection RGB 02,04r,09 RGB 05-06,04-09,03-01 (for comparison) better identification of young, severe storms MSG-1, 3 February 2004, 11:30 UTC

  48. RGB 05-06, 04-09, 03-01 Global View MSG-1 5 September 2004 15:00 UTC

  49. RGB 05-06, 04-09, 03-01:Interpretation of Colours Deep precipitating cloud (precip. not necessarily reaching the ground) - high-level cloud - large ice particles Deep precipitating cloud (Cb cloud with strong updrafts and severe weather)* - high-level cloud - small ice particles *or thick, high-level lee cloudiness with small ice particles Thin Cirrus cloud (large ice particles) Thin Cirrus cloud (small ice particles) Ocean Land

  50. 5. RGB 10-09, 09-04, 09 ("Night Microphysical") R = Difference IR12.0 - IR10.8 G = Difference IR10.8 - IR3.9 B = Channel IR10.8 Applications: Cloud Analysis, Fog, Contrails Area: Full MSG Viewing Area Time: Night-Time

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