R = Channel 02 (VIS0.8) G = Channel 04r (IR3.9, solar component) B = Channel 09 (IR10.8) Day Microphysics RGB devised by: D. Rosenfeld Applications: Applications:Cloud.

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Presentation transcript:

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

Recommended Range and Enhancement: BeamChannelRangeGamma Red02 (VIS0.8)0 …+100 %1.0 Green04r (IR3.9r) %2.5 Blue09 (IR10.8) K1.0 Day Microphysics RGB devised by: D. Rosenfeld

R = Difference VIS0.8 Optical Thickness, Viewing Geometry G = Difference IR3.9r Optical Thickness, Phase, Particle Size, Viewing Geometry B = Channel IR10.8 Top Temperature Physical Interpretation (for dust/ash/water/ice clouds)

Interpretation of Colours for 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 Thin Cirrus cloud (large ice particles) Thin Cirrus cloud (small ice particles) Ocean Veg. Land Fires / Desert Snow

Interpretation of Colours for 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 Ocean Veg. Land Fires / Desert Snow

Interpretation of Colours for 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 with large droplets Thin water cloud with small droplets Ocean Veg. Land Fires / Desert Snow

Example 1: Severe Convection MSG-1, 13 June 2003, 12:00 UTC

Example 2: Ship Trails MSG-1, 17 January 2006, 13:00 UTC

Example 3: Fires MSG-1, 27 April 2004, 14:15 UTC

MSG-1, 8 October 2003, 12:00 UTC ice mixed water ice Example 4: Ice vs Water Clouds

MSG-1, 26 August 2005, 12:00 UTC ice water Example 5: Ice vs Water Clouds

0.8  m 3.9r  m 10.8  m Cb -32C Fog St AC Snow 10.8  m Cb -32C Fog St AC Snow Ci 10.8  m Cb -32C Fog St AC Snow 10.8  m Cb -32C Fog St AC Snow Ci 10.8  m Cb -32C Fog St AC Snow 10.8  m Cb -32C Fog St AC Snow Ci Example 6: Cloud Analysis

Maputo MSG-1, 6 November 2004, 12:00 UTC Thin Ice Cloud (small ice) Thick Ice Cloud (small ice) Thick Ice Cloud (large ice) Thin Ice Cloud (large ice) Example 7: Small vs Large Ice Particles

MSG-1, 19 March 2007, 08:00 UTC Very cold clouds (lee cloudiness) with small ice particles Example 8: Lee Cloudiness

MSG-1, 8 November 2005, 12:00 UTC Example 9: Frontal Clouds

Example 9: Comparison with Dust RGB MSG-1, 8 November 2005, 12:00 UTC

MSG-1, 26 May 2007, 16:29 UTC Example 10: Low Light Conditions