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Optical Effects
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Signs of supercilium spotted over Mt. Ventoux, near Mirabelles-aux-Baronnies, France
An 'eye in the sky' during a view of the sunset from above the clouds, spotted over the North Atlantic Ocean
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A view of Altocumulus stratiformis undulatus, also known as a 'mackerel sky', from above Onondaga County, New York, US
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Altocumulus stratiformis radiatus spotted over Littleton, Colorado, US
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Altocumulus undulatus spotted over Upland, California, US
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A plethora of Altocumulus stratiformis spotted over Hood River, Oregon, US
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Undulatus within a dissipating altocumulus lenticularis formation, spotted over Brighton, Colorado, US
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A classic example of a fallstreak hole (cavum) within a layer of altocumulus, with signs of iridescence near the leading edge of the descending ice crystals, spotted over Lyons, Oregon, US
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A stunning display of Altocumulus stratiformis undulatus spotted at sunset over Bend, Oregon, US
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Stratocumulus undulatus spotted over Penrith, Cumbria, England
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Waves of altocumulus spotted in the morning over Madison, Wisconsin, US
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A layer of altocumulus over Imola, Italy
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Corona spotted over Mission Hill, Boston, Massachusetts, US
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Asperitas and lacunosus spotted following a morning thunderstorm over El Paso, Texas, US
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Sunrise view from the University of King's College and Dalhousie University campus buildings in Halifax, Nova Scotia, Canada
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Cirrocumulus spotted over Northwest Iran
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