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Note the white purified camphor on the cold finger, and the dark-brown crude product. Dark green crystals of nickelocene , freshly sublimed on the cold finger of the sublimation apparatus. A typical sublimation apparatus separates a mix of appropriate solid materials in a vessel in which it applies heat under a controllable atmosphere (air ...
The Wegener–Bergeron–Findeisen process (after Alfred Wegener, Tor Bergeron and Walter Findeisen []), (or "cold-rain process") is a process of ice crystal growth that occurs in mixed phase clouds (containing a mixture of supercooled water and ice) in regions where the ambient vapor pressure falls between the saturation vapor pressure over water and the lower saturation vapor pressure over ice.
The following processes have the corresponding results: smooth—deposition without wind; wavy—wind deposited snow; concave furrows—melt and sublimation; convex furrows—rain or melt; random furrows—erosion. Snow covered area (SCA) describes the extent of snow-covered ground, usually expressed as a fraction (%) of the total.
A virga, also called a dry storm, is an observable streak or shaft of precipitation that evaporates or sublimates before reaching the ground. [1] A shaft of precipitation that does not evaporate before reaching the ground is known in meteorology as a precipitation shaft.
Dark green crystals of nickelocene, sublimed and freshly deposited on a cold finger Sublimation of iodine. Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state. [1] The verb form of sublimation is sublime, or less preferably, sublimate. [2]
The "polar vortex" that plunged Canada and the U.S. into historical cold last winter is said by researchers to have occurred because melting polar ice changes weather patterns, according to a ...
That is, any snow that falls in that area is counteracted by sublimation or other losses. Such areas are known as blue-ice areas . [ 3 ] These areas have been used as blue ice runways (e.g. Wilkins Runway , Novolazarevskaya , Patriot Hills Base Camp ) due to their hard surface, which is suitable for aircraft fitted with wheels rather than skis .
"As the moist, warmer air overrides this entrenched cold air at the surfaces, there will be a threat for freezing rain and icy conditions Monday into Monday night across parts of upstate New York ...