Cloud - Wikipedia, the free encyclopedia
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A cloud is a visible mass of droplets or frozen crystals suspended in the atmosphere above the surface of the Earth or another planetary body. A cloud is also a visible mass attracted by gravity, su...
en.wikipedia.org/wiki/Cloud
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Cumulonimbus cloud - Wikipedia, the free encyclopedia
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Cumulonimbus ( Cb ) is a type of cloud that is tall, dense, and involved in thunderstorms and other intense weather. It is a result of atmospheric instability. These clouds can form alone, in clust...
en.wikipedia.org/wiki/Cumulonimbus_cloud
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Cirrus Cloud Formation ; 9/23/2003 ... Are cirrus cloud ice crystals falling behind their source of origin due to drag in the atmosphere? ----------------- Bob I would expect that the ice crystals that form to create cirrus clouds are sublimed, changing directly from water vapor to water solid.
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www.newton.dep.anl.gov/askasci/wea00/wea00173.htm
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Although there are only three basic types of cloud – cirrus, cumulus and stratus – these can combine to produce other types, such as cumulonimbus, cirrostratus and stratocumulus. In all there are about ten different varieties, ... Cirrus Cumulus Stratus Formation Experiments...
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www.rcn27.dial.pipex.com/cloudsrus/clouds.html
www.rcn27.dial.pipex.com/cloudsrus/clouds.html
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Cumulus clouds are caused by convection, during which a parcel of warm, moist air rises and cools until the air temperature equals the dew point temperature and invisible water vapor condenses to become liquid cloud droplets or solid ice crystals.
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www.wsanford.com/~wsanford/activities/ti83/ti83ccl.html
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nvestigations of the impact of aircraft particulate emissions on cirrus cloud formation ... Only a few articles address the possible impact of soot or mixed soot/sulphate particles on cirrus cloud formation in the tropopause region.
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imk-aida.fzk.de/abstract/2000/a2c3_00.html
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Although short-lived, complexes of these small liquid cells seem to have contributed importantly to the formation of the cirrus. Freezing-point depression effects in solution droplets, apparently resulting from relatively large cloud condensation nuclei of volcanic origin, can be used to explain this rare phenomenon.
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www.sciencemag.org/cgi/content/abstract/257/5069/516
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Laboratory measurements support a cirrus cloud formation pathway involving heterogeneous ice nucleation by solid ammonium sulfate aerosols. Ice formation occurs at low ice-saturation ratios consistent with the formation of continental cirrus and an interhemispheric asymmetry observed for cloud onset.
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www.sciencemag.org/cgi/content/short/313/5794/1770
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These results suggest that air masses containing ammoniated sulfate particles will promote cirrus cloud formation at higher temperatures and lower relative humidities than will those containing pure H2SO4 particles.
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www.agu.org/pubs/crossref/2001/2000GL012568.shtml
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