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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
Polar Stratospheric Clouds. The colorful clouds near the top of this picture are Polar Stratospheric Clouds (PSCs). The PSCs are flying high above the darker cirrus clouds at the bottom of the picture.
Glossary of Terms: P - Physical Geography
Pacific High High pressure system that develops over the central Pacific Ocean near the Hawaiian Islands. Also called the Hawaiian High. Paleoclimate Climatic conditions in the geological past reconstructed from a direct or indirect data source.
The Ozone Hole
Ozone Destruction. NASA Earth Observatory (Illustration courtesy Barbara Summey, SSAI) Understanding Stratospheric Ozone Depletion . Our understanding of stratospheric ozone depletion has been obtained through a combination of laboratory studies, computer models, and atmospheric observations.
Eocene - Wikipedia
The Eocene (/ ˈ iː ə ˌ s iː n, ˈ iː oʊ-/) Epoch, lasting from , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13 C in ...
Top 10 Unusual but Fascinating Cloud Formations - Toptenz.net
What is the sky without little fluffy clouds? Boring if you ask me. A cloudless plain sky is like a garden without flowers. Clouds can generally be
10 Amazing Rare Cloud Formations in Images - Listverse
Unlike the similar Polar Stratospheric clouds, noctilucent (or polar mesospheric clouds) occur in the polar mesosphere. These clouds are only visible when the sun is below the horizon and they are composed entirely of ice.
Rutgers University–New Brunswick
Rutgers University–New Brunswick is one of the nation's premier public research universities and a member of the Association of American Universities, the Big Ten Conference, and the Big Ten Academic Alliance.