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Optical Effects
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A lunar halo spotted over Poelkapelle, Belgium
Sunset over Wufeng District, Taichung City, Taiwan
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Shortly after sunrise, the view from above, sandwiched between layers of clouds during a flight from Glasgow to Stansted, spotted near Dilhorne, England
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22-degree halo spotted over Sacramento, California, US
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Circumzenithal Arc spotted over Amenia, New York, US
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An 'e' out of the remnants of contrails, spotted at sunrise over Klein-Linden, Gießen, Germany
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted over Mount Shasta, California, US
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22-degree halo spotted over Twisp, Washington, US
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Cirrocumulus with some limited signs of lacunosus, spotted over Taiwan
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Birds flying beneath cirrostratus, spotted over Esfahan, Iran
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A gap in cloud cover just beyond the edge of cumulus congestus, spotted over San Juan, Puerto Rico
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A display of cirrus at sunset over Vermontville, Adirondacks, New York, US
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22-degree halo spotted near Birling Gap, Seven Sisters, East Sussex, England
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Cumulus spotted beyond the hillside over Taiwan
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A set of trees reaching upwards towards the sky, with cirrocumulus undulates spotted over Somerset, England
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An intricate web of undulatus, accompanied by signs of lacunosus, spotted over Lake Stevens, Washington, US
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