Picture of the Day: Iridescent Antarctica





Polar stratospheric clouds nacreous clouds antarctica by deven stross (1)

Photograph by DEVEN STROSS
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In this phenomenal capture by Deven Stross, we see beautiful and rare Nacreous clouds over the NASA Radome at McMurdo Station on Ross Island in Antarctica. The photo was taken on August 20th, 2013.

Nacreous clouds (from nacre, or mother of pearl, due to its iridescence), which are also known as polar stratospheric clouds or PSCs; are clouds in the winter polar stratosphere at altitudes of 15,000–25,000 meters (49,000–82,000 ft).

Due to their high altitude and the curvature of the surface of the Earth, these clouds will receive sunlight from below the horizon and reflect it to the ground, shining brightly well before dawn or after dusk. [Source]

Though stunning in their beauty they are implicated in the formation of the ozone holes over Antarctica. The effects on ozone depletion arise…

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