ice formed by reverse sublimation of water vapour on cold surfaces.
sublimation—The change of (a) ice to water vapor or (b) water vapor to ice. See latent heat.
Chinook—A warm, dry joehn wind blowing down the eastern slopes of the Rocky Mountains over the adjacent plains in the U.S. and Canada.
The phase change from a solid to a gas. The opposite of crystallisation.
Sublimation: The transition of a substance from the solid phase directly to the vapour phase without being in the liquid phase. The opposite of sublimation is deposition.
sublimation - The process of phase transition from solid directly to vapor in the absence of melting. Thus an ice crystal or icicle sublimes under low relative humidity at temperatures below 0°C. The process is analogous to evaporation of a liquid.
~ The process whereby ice changes directly into water vapor without melting.
~ The process whereby water changes phase from a solid into a vapor without first becoming liquid.
~ The change from ice (a solid) directly to water vapor (a gas) without going through the liquid water phase. It is the opposite of Deposition.
The process of a solid (ice) changing directly into a gas (water vapor), or water vapor changing directly into ice, at the same temperature, without ever going through the liquid state (water).
~- The change from ice directly to water vapor or from water vapor to ice with out going through the liquid water phase.
Subsidence- Downward moving (sinking) air over a broad area that is associated with warming air and little cloud formation.
~- the change of ice to vapor or vapor to ice without a liquid phase.
~ - Phase change from a solid to a gas, without going through the liquid phase. Ice evaporating directly to water vapor is said to be "SUBLIMING". See also DEPOSITION.
Water vapor condensing over a cup of hot tea
Whenever a water molecule leaves a surface, it is said to have evaporated. Each water molecule that becomes water vapor takes a parcel of heat with it. This process is called evaporative cooling.
The process by which solids are transformed directly to the state of vapour or vice versa, without passing through the liquid phase.
A large belt of high pressure located around 30 degrees latitude in both hemispheres, and characterized by mostly calm winds.
ablation (glacial) All processes, which include melting, evaporation (~), wind erosion, and calving (breaking off of ice masses), that remove snow or ice from a glacier or snowfield. The term also refers to the amount of snow or ice removed by these processes.
Bowen RatioFor any moist surface, the ratio of heat energy used for sensible heating (conduction and convection) to the heat energy used for latent heating (evaporation of water or ~ of snow). The Bowen ratio ranges from about 0.1 for the ocean surface to more than 2.
Examples include condensation and ~. LATITUDE The location north or south in reference to the equator, which is designated at zero (0) degrees. Parallel lines that circle the globe both north and south of the equator. The poles are at 90 degrees North and South latitude.
The rate of ice accumulation is slightly greater than the rate of ~. It is not hazardous even though de-icing/anti-icing equipment is not utilized, unless encountered for an extended period of time--over one hour.
A deposit of interlocking crystals formed by direct ~ on objects, usually those of small diameter freely exposed to the air, such as tree branches, plants, wires, poles, etc.
The covering of ice crystals that forms by direct ~ on exposed surfaces whose temperature is below freezing.
Precipitation that reaches the ground in a frozen state. Examples include snow, snow pellets, snow grains, ice crystals, ice pellets, and hail.
Alternately, frost or hoar frost describes a deposition of ice crystals on objects by direct ~ of water vapour from the air.
frost free days ...
Old snow which has become granular and dense under the action of various processes of melting and refreezing, including ~.
Latent heat of condensation (or fusion) is the amount of heat energy release to the environment when a gas changes its state to a liquid. For one gram of water, the amount of heat energy released is 540 calories at a temperature of 100 degrees Celsius. Latent heat of ~ (solid ice to ...
Frost Heaving "Frost heaving" is the lifting of a surface by the internal action of frost. It generally occurs as a result of freeze-thaw cycles. It can also occur, to a lesser extent, by ~ (ice forming from water vapor at high humidity).
Showery precipitation in the form of irregular pellets or balls of ice more than 5 mm in diameter, falling from a cumulonimbus cloud.
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Bergeron Process, Border Ice, BRD, Diamond dust, PL, Shore ice, ~ ...
latent heat of ~
water molecules absorb 680 calories per gram to change from the the solid (ice) state to the gaseous (water vapor) state
water molecules release 680 calories per gram to change from the gaseous state (water vapor) to the solid (ice) state ...
Frost Ice crystal deposits formed by ~ (conversion of water vapor directly to ice) when temperature and dew point are below freezing.
See also: What is the meaning of Snow, Water, Surface, Center, Temperature?