Here is an excellent satellite imagery interpretation by Paul Nutter of the Great Falls WFO regarding the Nighttime Microphysics RGB. As Paul demonstrates with his ability to describe this image and support its value based on current imagery, training and continued experience can lead to efficient use of RGB-type imagery.
A strong early season cold front pushed through Montana from Alberta on 9 September 2014. The front produced several layers of cloud cover that appeared richly on the Nighttime Microphysics RGB imagery. This provides an excellent case for a study of capabilities we expect to have available on the GOES-R platform.
Table 1. Wavelength Band or band difference contributions to the RGB triplets and their physical interpretation used within the Nighttime Microphysics RGB composite imagery.
|Color||Band / Band Diff.||Physically Relates to:||Little contribution to composite indicates:||Large contribution to composite indicates:|
|Red||12.0 – 10.8||Optical Depth||Thin clouds||Thick clouds|
|Green||10.8 – 3.9||Particle Phase and Size||Ice particles;
Surface (i.e. cloud free)
|Water clouds with
|Blue||10.8||Temperature of surface||Cold surface||Warm surface|
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