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Mysterious clouds produced when aircraft inadvertently cause rain or snow
Turboprop and jet aircraft can create hole-punch clouds, which have long fascinated the public.
- Weather
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The hole story
They’ve been called “crop circles in the sky.” Across the world, sightings of oddly circular holes within cloud layers—dubbed hole-punch clouds by scientists—have triggered bemusement and speculation.
- Weather
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A closer look at cirrus clouds
Cirrus clouds—thin strands or sheets usually composed of ice crystals—form high in the atmosphere. A new study led by NCAR scientist Steve Massie employs satellite technology to observe the clouds in greater detail than before.
- Weather