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(WW2010) - Introduces high, middle and low level clouds, vertically developed clouds, plus lifting mechanisms and processes responsible for producing clouds and precipitation. ... Cloud Types; High, middle and low-level clouds, vertically developed clouds, plus some less common cloud types.
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ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cld/home.rxml
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The high cloud group consists of Cirrus, Cirrostratus, and Cirrocumulus clouds. High clouds are made of ice crystals due to the cold air in the upper sky. The base of a high cloud above the surface can be anywhere from 6000-18000m in the tropics to 3000-8000m in the polar regions.
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www.windows.ucar.edu/tour/link=/earth/Atmosphere/clouds...
www.windows.ucar.edu/tour/link=/earth/Atmosphere/clouds/high_cloud.html
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Clouds form by the condensation of water into extremely small droplets of liquid or ice. Clouds are classified according to the height at which they form and their structure. High clouds form above 7,000 m (23,000 ft) and are primarily composed of ice crystals.
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www.uwsp.edu/geo/faculty/ritter/geog101/textbook/atmosp...
www.uwsp.edu/geo/faculty/ritter/geog101/textbook/atmospheric_moisture/clouds_1.html
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These clouds form between 5 and 14 km (16,500-45,000 ft) high. They are thin and wispy, with names all beginning with "cirro-", because they resemble hair. They are made as water vapour changes into ice crystals at high altitudes.
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library.thinkquest.org/15525/high-level.html
library.thinkquest.org/15525/high-level.html
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Like clear air, cirrus clouds absorb the Earth's radiation and then emit longwave, infrared radiation both out to space and back to the Earth's surface. Because cirrus clouds are high, and therefore cold, the energy radiated to outer space is lower than it would be without the cloud (the cloud greenhouse forcing is large).
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earthobservatory.nasa.gov/Library/Clouds/clouds3.html
earthobservatory.nasa.gov/Library/Clouds/clouds3.html
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The clouds will allow scientists to monitor winds in the ionosphere, explains Gregory Earle from the University of Texas in Dallas, the lead researcher for the project. "They will act as a tracer and allow us to view the winds at various altitudes over a period of time."
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science.nasa.gov/headlines/y2003/20jun_TMAclouds.htm
science.nasa.gov/headlines/y2003/20jun_TMAclouds.htm
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Kiara Johnson, a senior, waits across Centre Avenue after finding out summer classes at Schenley High School were canceled yesterday after a ceiling collapsed in the second level of a stairwell. Kiara was taking Algebra II.;
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www.post-gazette.com/pg/07192/800787-53.stm
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These clouds have bases between 16,500 and 45,000 feet in the mid latitudes. At this level they are composed of primarily of ice crystals. Some clouds at this level are cirrus, cirrocumulus, and cirrostratus...
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www.weather.gov/glossary/index.php?word=HIGH%20CLOUDS
www.weather.gov/glossary/index.php?word=HIGH%20CLOUDS
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The most common form of high-level clouds are thin and often wispy cirrus clouds. Typically found at heights greater than 20,000 feet (6,000 meters), cirrus clouds are composed of ice crystals that originate from the freezing of supercooled water droplets.
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ww2010.atmos.uiuc.edu/(Gh)/wwhlpr/cirrus.rxml?hret=/gui...
ww2010.atmos.uiuc.edu/(Gh)/wwhlpr/cirrus.rxml?hret=/guides/mtr/opt/ice/halo/22.rxml
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