* Noctilucent * by NekhbetSun

2D • Atmosphere/Mood • posted on Oct 30, 2008

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Description

Mornin' All *S* Heard this word (Noctilucent) on the weather report and thought it was so cool :o)....in Latin, it roughly means "night shining" and I'm applying that meaning to this pic Weather-wise, it describes a certain type of cloud. Noctilucent clouds, also known as polar mesospheric clouds, are cloud-like phenomena in the upper atmosphere, visible in a deep twilight. They are made of crystals of water ice. They are most commonly observed in the summer months at latitudes between 50° and 70° north and south of the equator. They are the highest clouds in the Earth's atmosphere, located in the mesosphere at altitudes of around 76 to 85 kilometers (47 to 53 mi). They are normally too faint to be seen, and are visible only when illuminated by sunlight from below the horizon while the lower layers of the atmosphere are in the Earth's shadow. Noctilucent clouds are not fully understood and are a recently discovered meteorological phenomenon; there is no evidence that they were observed before 1885. ~Wikipedia Thanks for all the great comments and faves and y'all have a great day ! ~ Love & Hugs ~ * Mina * Credits: www.mizz-d.deviantart.com www.prettybrush.deviantart.com