Nacreous Clouds
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nacreous clouds [′nā·krē·əs ′klau̇dz]

(meteorology)

Clouds of unknown composition, whose form resembles that of cirrus or altocumulus lenticularis, and which show very strong irisation similar to that of mother-of-pearl, especially when the sun is several degrees below the horizon; they occur at heights of about 12 or 18 miles (20 or 30 kilometers). Also known as mother-of-pearl clouds.

Nacreous Clouds

thin, translucent clouds that occur at high elevations (about 22–30 km). They are observed rather infrequently, usually at latitudes of 55°-60° just before sunrise or just after sunset (against the daytime background of diffused light they are invisible).

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No references found			Extreme cold temperatures there produce polar stratospheric clouds. Saving the ozone layer: thirty years ago, scientists fought to stop ... by Crane, Cody / Science World Potential feedback mechanisms include polar stratospheric clouds (Sloan and Pollard 1998) and hurricane-induced ocean mixing (Emanuel et al. Geoscience of climate and energy 4. Rapid carbon injection and ... by Sluijs, Appy / Geoscience Canada Key chemical reactions that lead to ozone depletion happen on the surface of rare polar stratospheric clouds (PSCs), which form high up in the atmosphere. Mountains in Antarctica can help destroy ozone layer by Asian News International			polar line polar low polar maritime air polar meteorology polar migration polar modulation polar molecule polar mutations polar navigation Polar Night polar normal polar nucleus polar orbit polar outbreak Polar Plateau polar plumes polar projection polar radiation pattern polar reciprocal convex bodies polar regions polar relay polar resolution polar sequence polar solvent Polar Stations Polar stratospheric cloud polar subnormal polar subtangent polar symmetry polar tangent polar telescope polar timing diagram polar transmission polar triangle polar trough Polar Tube Polar Urals polar variation polar vector polar vortex polar wandering polar westerlies polar-cap absorption polar-cap ice polar-class icebreaker polar-coordinate navigation system polar-easterlies index polar-front theory polar-reciprocal curves polar-reciprocal triangles Polarimeter			Polar Regions Outer Magnetosphere International Study polar relay Polar Remote Interactive Marine Observatory Polar Research Institute of China Polar Research Institute of Marine Fisheries and Oceanography polar resolution Polar reversal Polar reversal Polar Satellite Launch Vehicle Polar Science Center polar sequence polar sequence Polar solvent Polar solvent Polar solvent Polar solvent Polar solvent Polar Space Launch Vehicle Polar Spatial Query Polar spherical triangle polar spongioblastoma polar spongioblastoma polar spongioblastoma polar star polar star polar star polar stars polar stars Polar Stations Polar Stereographic Polar stratospheric cloud Polar stratospheric clouds Polar Submembranous Aggregate of Spectrin polar subnormal Polar Subsurface Sounder polar subtangent Polar Sun Synchronous Launching Vehicle Polar sun synchronous orbit Polar sun synchronous orbit Polar surface area Polar Surface Layer polar symmetry Polar system polar tangent polar telescope polar timing diagram Polar topology polar transmission polar triangle polar trough Polar Tube Polar Tube Protein 1 Polar Tuberculoid Polar Urals polar variation Polar vector

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Nacreous Clouds (redirected from Polar stratospheric cloud)

Nacreous Clouds
(redirected from Polar stratospheric cloud)