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Optical Effects
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Altocumulus stratiformis undulatus on a cold afternoon over Cylburn Arboretum, Baltimore, Maryland, US
Altocumulus stratiformis impacted by varying winds at different layers in the atmosphere, spotted over Falls Church, Virginia, US
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Altocumulus stratiformis undulatus over Lisbon, Portugal
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On a walk, Monica described it as being wrapped in a startling smorgasbord of cloud beauty, near the San Francisco Bay, California, US
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Altocumulus stratiformis radiatus over Troy, Michigan, US
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A view from in between two layers of clouds while flying over the Midwest, US
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Altocumulus near Khancoban, New South Wales, Australia
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Altocumulus stratiformis with valley fog at sunset over Picinisco, Lazio, Italy
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Altocumulus with iridescence over Arlington, Virginia, US
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Altocumulus stratiformis undulatus, also known as a "mackerel sky", is on display above lower level cumulus fractus, over Boca Raton, Florida, US
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Altocumulus stratiformis radiatus over Aix-en-Provence, France
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Stratocumulus stratiformis radiatus spotted over Busquistar, La Alpujarra, Andalucia, Spain
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Altocumulus stratiformis over Nantwich, Cheshire, England
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Altocumulus stratiformis radiatus stretching out towards the horizon in the late afternoon sky over Folsom, California, US
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An expansive display of altocumulus in advance of a winter storm, spotted near Walburg, Texas, US
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Cirrocumulus stratiformis over Khomeynishahr, Esfahan, Iran
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