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Other Clouds
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Optical Effects
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- Wegener arc
Nacreous over Alta, Norway
Cumulus fractus near Khomeynishahr, Esfahan, Iran
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Crepuscular rays over New Taipei City, Taiwan
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A primary rainbow and a subtle secondary rainbow near Green Island, Taiwan
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Altocumulus over Willimantic, Connecticut, US
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Fluctus (Kelvin-Helmholtz), which Lars described as the biggest surf ever seen in Denmark, spotted over the Copenhagen airport, Denmark
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Mammatus at sunset over Siler City, North Carolina, US
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Cirrocumulus floccus spotted over Santa Fe, New Mexico, US
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Iridescence over Lochbuie, United States
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Sand dunes that appear to almost meet the clouds above, spotted at Parque Nacional dos Lencois Maranhenses, Brazil
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Stratocumulus undulatus over Estrella Foothills, Arizona, US
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Virga over Glossop, England
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Cumulus clouds over Mahajeran, Iran
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Early dawn near Lienden, Netherlands
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A purple hue over Raleigh, North Carolina, US
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