Polar stratospheric cloud - Wikipedia
Polar stratospheric clouds (PSCs) 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 …
Polar Stratospheric Clouds - NASA
2008年3月23日 · 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 …
Polar Stratospheric clouds - Vajiram & Ravi
2023年12月21日 · About Polar Stratospheric clouds (PSC) These are also known as nacreous clouds or mother of pearl, due to their iridescence. These are formed in very cold conditions over Polar Regions and within the stratosphere, around 12 …
Polar Stratospheric Clouds: Satellite Observations, Processes ...
Key Points. We provide a new vortex-wide climatology of polar stratospheric cloud occurrence and composition based on 21st century satellite data. We review advances in understanding cloud formation, the role of dynamical processes, and heterogeneous chlorine activation.
Polar stratospheric clouds - Australian Antarctic Program
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.
Polar Stratospheric Clouds - Harvard University
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.
Ultra-rare 'rainbow clouds' light up the Arctic Circle like ...
2023年1月31日 · Rare clouds that give off bright, multi-colored light like an aurora were recently spotted at multiple locations in the Arctic. But what causes them?