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Main Cloud Types
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- Cumulonimbus
Other Clouds
- Arcus
- Asperitas
- Cap / banner clouds
- Capillatus
- Castellanus
- Cataractagenitus
- Cauda (Tail cloud)
- Cavum (Fallstreak hole)
- Congestus
- Contrail (homogenitus)
- Duplicatus
- Diamond dust
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- Fibratus
- Flammagenitus (Pyrocumulus)
- Floccus
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- Fractus
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- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
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- Noctilucent
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- 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
Lenticularis over Canyon View Mobile Home Park, United States
A reflective view of the sunset while at a gas station in Santa Fe, New Mexico, US
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Multiple fallstreak holes (cavum) spotted over Sebastopol, California, US
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A vibrant sunrise over the Atlantic Ocean, near Boca Raton, Florida, US
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Contrail over Downsview-Roding-CFB, Canada
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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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Cirrus spissatus over Island Bay, Wellington, New Zealand
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Moon dog, analogous to a sun dog (parhelion), but with the light from the moon that is interacting with ice crystals in the atmosphere, spotted here over The Villages, Florida, US
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A "big bird" is spotted overhead in the midst of the cirrus clouds over Goodyear, Arizona, 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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A blue landscape wherein the water appears to meet the sky, near Taitung, Taiwan
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Altocumulus lenticularis spotted over the Sierra Nevada mountains, as viewed from Granada, Spain
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Altocumulus and cumulus fractus spotted over Sanxia District, New Taipei City, Taiwan
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Iridescence over Lochbuie, United States
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Sunset reflecting the contrast between the sky and the trees, as seen over Melksham, Wiltshire, England
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