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Polar stratospheric cloud - Wikipedia
Polar stratospheric clouds (PSCs), also known as nacreous clouds (/ ˈ n eɪ k r i ə s /, from nacre, or mother of pearl, due to its iridescence), are clouds in the winter polar stratosphere at altitudes of 15,000–25,000 m (49,000–82,000 ft). They are best observed during civil twilight, when the Sun is between 1 and 6 degrees below the horizon, as well as in winter and in more northerly ...
Polar Stratospheric Clouds - The Ozone Hole
Polar stratospheric clouds or PSCs, also known as nacreous clouds from nacre, or mother of pearl, due to its iridescence), are clouds in the winter polar stratosphere. PSCs form at very high altitudes, between 15 and 25 km (about 50,000 to 80,000 feet). PSCs only form at very cold temperatures around -78° C (-108° F).
Polar Stratospheric Clouds | NASA
Scientists recently discovered that polar stratospheric clouds, long known to play an important role in Antarctic ozone destruction, are occurring with increasing frequency in the Arctic. These high altitude clouds form only at very low temperatures help destroy ozone in two ways.
Polar stratospheric clouds — Australian Antarctic Division
Polar stratospheric clouds (PSCs) play a central role in the formation of the ozone hole in the Antarctic and Arctic. PSCs provide surfaces upon which heterogeneous chemical reactions take place. These reactions lead to the production of free radicals of chlorine in the stratosphere which directly destroy ozone molecules.
Polar Stratospheric Clouds - Harvard John A. Paulson ...
One explanation for the decrease in the equator to pole temperature difference (EPTD) during equable climates examines the influence of polar stratospheric clouds (PSCs) on longwave radiation leaving the Earth in the high-latitudes and, as a result, on temperatures near the poles. In contrast to ...
Polar Stratospheric Clouds - scied.ucar.edu
The bright, colorful clouds towards the top of this image are Polar Stratospheric Clouds (PSCs).Notice that the PSCs are far above the darker cirrus clouds at the bottom of the picture.Also called nacreous clouds, PSCs form in the lower
Polar Stratospheric Clouds - Windows to the Universe
Polar Stratospheric Clouds The stratosphere is a layer of Earth's atmosphere. We live in the troposphere, the layer below the stratosphere. There are many different kinds of clouds in the troposphere. However, there is only one kind of cloud in the stratosphere! Those clouds are called Polar Stratospheric Clouds (PSCs).
Polar Stratospheric Clouds | Earth | EarthSky
Bottom line: Polar stratospheric clouds – also called nacreous clouds or mother-of-pearl clouds – have been putting on a show for those at latitudes near the Arctic Circle. Photos from the ...