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Main Cloud Types
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Other Clouds
- Arcus
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- Cavum (Fallstreak hole)
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- Mediocris
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- Noctilucent
- Pannus
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- Pileus
- Praecipitatio
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- Silvagenitus
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- 'Supercilium' (not official classification)
- Translucidus
- Tuba / Twister
- Uncinus
- Undulatus
- Velum
- Vertebratus
- Virga
- Volutus (Roll cloud)
Optical Effects
- 22° Halo
- 46° Halo
- Circumhorizon Arc
- Circumscribed halo
- Circumzenithal Arc
- Cloudbow / Fogbow
- Corona
- Crepuscular rays & shadows
- Diffuse arcs
- Green flash
- Glory
- Halos
- Helic arc
- Infralateral arc
- Iridescence
- Lower Sun Pillar
- Lower Tangent Arc
- Moonbow
- Moondogs
- Parhelic circle
- Parry antisolar arcs
- Parry arc
- Parry infralateral arc
- Parry supralateral arc
- Rainbow
- Sub parhelion
- Sub-sun
- Suncave parry arc
- Sun dog (Parhelion)
- Sun pillar
- Supernumerary bows
- Subparhelic circle
- Supralateral arc
- Upper tangent arc
- Wegener arc
Crepuscular rays and shadows at sunset near Charlo, Montana, US
Crepuscular rays emanating like spotlights from the horizon during sunrise over Busquistar, Andalusia, Spain
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Nacreous clouds are often lenticular wave clouds which are found downwind of mountain ranges that induce gravity waves in the stratosphere. These nacreous clouds were spotted by Gary's friend, Sierra Salin, in the early morning hours over Mt. Tamalpais, Marin County, California, US.
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Stratocumulus with color from the sun, spotted over Jiangxi Province, China
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A colorful display of altocumulus over Beckley, near Oxford, England
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A vibrant sunset following an earlier thunderstorm near Brisbane, Australia
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Altocumulus undulatus at sunrise as viewed from west of the Rocky Mountain foothills, looking east, near Fort Collins, Colorado, US
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Nacreous clouds spotted just before dawn over Oakland, California, US
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A reflective view of the sunset while at a gas station in Santa Fe, New Mexico, US
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A vibrant sunrise over the Atlantic Ocean, near Boca Raton, Florida, US
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Contrails and contrail shadows present themselves in this unique atmospheric optical phenomena, wherein the shadows are created when the sun (or moon) casts a shadow of an aircraft contrail onto a lower layer of clouds or haze. The interplay of light, clouds, and ice crystals, coupled with one's viewing angle, gives rise to a captivating display in the sky, as seen here during sunset over Falls Church, Virginia, US.
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A unique view of what might be interpreted as a solar corona, reflected through particles in the atmosphere, spotted at sunset near Saint-Jean-des-Vignes, France
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Altocumulus undulatus radiatus, viewed while facing north in the early morning hours, near Charlo, Montana, US
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Sunset reflecting the contrast between the sky and the trees, as seen over Melksham, Wiltshire, England
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Undulatus over West London, England
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Colorful cumulus fractus over New Taipei City, Taiwan
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