Meteorological optical phenomenon

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SUMMARY

The discussion centers on a meteorological optical phenomenon observed in a photograph featuring fanlike structures above a cumulus cloud. These structures are identified as shadows cast by the sun, indicating a hazy smoggy layer typical of stable high-pressure subsidence inversions. The presence of the cumulus cloud suggests atmospheric instability, raising questions about potential transient cold fronts. The phenomenon is reminiscent of crepuscular rays, which are well-documented in atmospheric optics.

PREREQUISITES
  • Understanding of meteorological terms such as "cumulus cloud" and "high-pressure subsidence inversions"
  • Familiarity with optical phenomena like "crepuscular rays"
  • Knowledge of atmospheric stability and instability concepts
  • Basic grasp of light reflection and shadow formation in meteorology
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  • Research "crepuscular rays" and their formation mechanisms
  • Explore "high-pressure subsidence inversions" and their effects on weather patterns
  • Study the relationship between cloud types and atmospheric stability
  • Investigate the role of light reflection in meteorological phenomena
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Meteorologists, atmospheric scientists, photography enthusiasts interested in weather phenomena, and educators teaching about optical effects in the atmosphere.

DaveC426913
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Snapped this pic the other day. At first, I was drawn by the subtlety of the central tip of the cloud, which is illuminated by reflected light from the sunlit mound of cloud between it and us, but I was wowed by these fanlike structures in the sky above the cloud.

Those are not digital artifacts or anything, they are naked-eye effects. They are some sort of shadow, cast over the top of the cloud by the sun. I don't quite understand what phenomenon has created them though. Any takers?
 

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That's most unusual. The cumulus cloud clearly indicates instability while the reflections and shadow indicate a hazy smoggy layer which usually only exist in stable high pressure subsidence inversions.

So, could this be a transient cold front just about to pass? Just a guess.
 

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