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Optical Effects
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A contrast of high and low formations over Poland, Ohio, US.
A mixed sky at sunset, as seen from 36,000 feet above the ground, on a flight that was traversing across southern Japan
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A roll cloud, or volutus, which is a rare, low horizontal tube-shaped arcus cloud, detached from the parent storm cloud, and represents the leading edge of a thunderstorm's gust front. This example was spotted between Vinylhaven Island and the Rockland area of the Mid-Coast, near Penobscot Bay, Maine, US.
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Looking west over the Pacific Ocean, cirrus uncinus and cirrocumulus undulatus are spotted near Yachats, Oregon, US
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Cirrostratus that appears to be somewhat attributable to prior contrails, spotted over the University of Washington, Seattle, Washington, US
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A view from above the clouds, and capturing a cloud formation that looks like a 'cloud boat', spotted on a flight from Vilnius to Brussels, while over Poland
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Iridescence amidst an opening in the sky over Winchester, England
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A developing storm system over Chioggia, south of Venice, Italy
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Altocumulus lenticularis at sunset over Vermontville, Adirondacks, New York, US
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A train of cumulus clouds, puffing along the Northumberland Strait, viewed from Maximeville in the Evangeline region of Prince Edward Island, Canada
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With an ode to Joni Mitchell and 'Both Sides Now', William spotted these developing cumulonimbi near Salisbury, England
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Subtle signs of fluctus over Haidian District, Beijing, China
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Reflections of cumulus on the Sekonyer River in Tanjung Puting National Park, Borneo, Indonesia
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Crepuscular rays and shadows at sunset over Sacramento, California, US
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A vivid reflection of altocumulus over Surry, Maine, US
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Cumulus congestus spotted along the horizon, near Portland, Dorset, England
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