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Optical Effects
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Crepuscular rays being seen above and below cumulus congestus at sunset near the airport on Grand Cayman of the Cayman Islands
Reflections of the sky near St Ives, Cornwall, England
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Crepuscular rays over Zagreb, Croatia
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Crepuscular rays finding their way through a layer of stratocumulus clouds over Alexandria, Virginia, US
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Similar to other clouds, contrails can cast shadows, in that an aircraft and its contrail are actually high up in the sky, while the shadow is cast downwards onto the cirrus haze layer by the sun or the moon. The thin layer acts as a canvas upon which the shadow is projected. In the end, contrail shadows are a captivating atmospheric optical phenomena that sometimes appears counter-intuitive. This example of such a contrail and its shadow was spotted over Columbus, Ohio, US.
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Crepuscular rays over Esfahan, Iran
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Crepuscular rays over St. Ives Bay, near Godrevy, Cornwall, England
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Crepuscular rays spotted by Sue's husband, Clarke, from their back veranda, near the Swan River, Perth, Western Australia
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Crepuscular rays over Pitman, New Jersey, US
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Altocumulus lenticularis spotted near Taormina, Sicily, Italy
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A colorful sunrise over the Atlantic Ocean, as viewed from Boca Raton, Florida, US
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Crepuscular rays and shadows at sunset near Charlo, Montana, US
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Crepuscular rays emanating like spotlights from the horizon during sunrise over Busquistar, Andalusia, Spain
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Crepuscular rays over Khomeyni Shahr, Esfahan, Iran
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Contrails and contrail shadows present themselves in this unique atmospheric optical phenomena, wherein the shadows are created when the sun (or moon) casts a shadow of an aircraft contrail onto a lower layer of clouds or haze. The interplay of light, clouds, and ice crystals, coupled with one's viewing angle, gives rise to a captivating display in the sky, as seen here during sunset over Falls Church, Virginia, US.
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Crepuscular rays shining over a line of cumulus congestus, accompanied by its reflection in the water, spotted by Tanja on a meaningful trip to Newfoundland, Canada
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