1. Slide: 1 R = Difference WV6.2 - WV7.3 G = Difference IR3.9 - IR10.8 B = Difference NIR1.6 - VIS0.6 RGB 05-06, 04-09, 03-01 ("Day Convective Storms") devised by: J. Kerkmann Applications: Applications:Severe Convective Storms, Hurricanes Area: Area:Full MSG Viewing Area Time: Time:Day-Time Users: Users:Italy, Czech Republic, Austria, Croatia, Israel, Finland, South Africa, Hungary...

2. Slide: 2 Recommended Range and Enhancement: BeamChannelRangeGamma RedWV6.2 - WV7.3-35 … +5 K1.0 GreenIR3.9 - IR10.8-5 … +60 K0.5 BlueNIR1.6 - VIS0.6-75 … +25%1.0 RGB 05-06, 04-09, 03-01 ("Day Convective Storms") devised by: J. Kerkmann

3. Slide: 3 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

4. Slide: 4 29 June 2006 HRV RGB 05-06,04-09,03-01 Small Ice Particles in Severe Convective Storms

5. Slide: 5 MSG-2, 3 April 2008, 12:30 UTC Cb Cloud (small ice, IR3.9r=16%) Small Ice Particles in Convective Clouds with Cold Base

6. Slide: 6 MSG-1, 22 February 2007, 12:00 UTC Thick Ice Cloud (small ice) dust outbreak Small Ice Particles in “Polluted” Clouds

7. Slide: 7 Small Ice Particles in High-level Lee Cloudiness MSG-1, 19 March 2007, 08:00 UTC RGB WV6.2-WV7.3, IR3.9-IR10.8, NIR1.6-VIS0.6 (RGB Convection) Very cold clouds (lee cloudiness) with small ice particles

8. Slide: 8 Balatonalmádi Pileus cloud 15:27 UTC André Simon, Mária Putsay, Ákos Horváth: Is the appearance of this yellow spot connected to the Pileus? Small Ice Particles in Pileus Clouds

9. Slide: 9 24-h Dust Day Microphysics Convective Storms Met-8, 22 February 2007, 12:00 UTC small ice particles (IR3.9r > 10%)... dust changes cloud microphysics!

10. Slide: 10 MSG-1, 13 June 2003, 12:00 UTC RGB 02, 04r,09 RGB 05-06, 04-09, 03-01 better identification of young, severe storms Comparison RGB 02,04r,09 vs RGB 05-06,04-09,03-01

11. Slide: 11 RGB Day Convective Storms Global View MSG-1 5 September 2004 15:00 UTC

12. Slide: 12 RGB Day Convective Storms: Interpretation of Colours Deep precipitating cloud (precip. not necessarily reaching the ground) - high-level cloud - large ice particles Ocean Land Thin Cirrus cloud (large ice particles) Thin Cirrus cloud (small 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