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Parhelic Circle amidst the optical phenomena spotted over New York City, New York, US
A wide range of contrails and dispersement as a result of varying atmospheric conditions, such as humidity, temperature, wind shear, and atmospheric and aircraft-induced turbulence. The clouds that are formed are done so via homogenitus and are dispersed wider in conditions of high humidity and high wind shear. This expansive display was captured by Ted Burrows over Lexington, Virginia, US.
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A unique juxtaposition of Altocumulus lenticularis and Fluctus (Kelvin-Helmholtz) spotted on the lee side of the Rocky Mountains in Berthoud, Colorado, US
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Mid-morning iridescence over Lebec, California, US
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A plethora of contrails near Washington National Airport, spotted from Falls Church, Virginia, US
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A line of developing Cumulus congestus spotted over east central Ohio, US
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Circumzenithal Arc spotted over Amenia, New York, US
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A plethora of contrails spotted by Sabine at home, while her friend, Gerrit, captured this view from a nearby location, along the banks of the Lower Rhine in Arnhem, The Netherlands
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Sun Dogs (Parhelion) spotted during sunrise over East Texas Regional Airport, Longview, Texas, US
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22-degree halo spotted near Devils Tower National Monument, Wyoming, US
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A classic example of a distrail, also known as a dissipation trail, when a clear path is formed through a cloud by the passage of an airplane. It develops when the heat from an aircraft's engine warms and evaporates supercooled cloud droplets. This distrail, along with a nearby contrail, was spotted over Montmeló, Barcelona, Spain.
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Altocumulus lenticularis spotted over Black Butte, Oregon, US
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Horseshoe vortex spotted over Leuven, Belgium
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Altocumulus lenticularis during the late afternoon over Merano, Italy
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An exquisite view of cumulus with the backdrop of a blue sky, spotted over Momochi Seaside Park, Fukuoka City, Japan
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Sunset with an expansive display of undulatus over Brighton, Colorado, US
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