This category deals with scattering and absorption of electromagnetic radiation by particles, molecules, and surfaces including multiple scattering effects (in other words, radiative transfer).
absorption cross section"The area that, when multiplied by the irradiance of electromagnetic waves incident on an object, gives the radiant flux absorbed and dissipated by the object.
Absorption The process in which radiant energy is retained by a substance.
Absorption: The process by which incident radiant energy is retained by a substance.
Advection: Horizontal transport of an atmospheric property.
Aerosols: Tiny solid or liquid particles that are suspended in the atmosphere.
Absorption - the process of retaining incident radiant energy in a substance
AC - a shorthand name for the convective outlook issued by the SPC; abbreviation for Anticipated Convection.
Absorption The process whereby a portion of the radiation incident on an object is converted to heat.
ABSORPTION The process in which incident radiant energy is retained by a substance. The absorbed radiation is then transformed into molecular energy.
ABYSSAL PLAIN The flat, gently sloping or nearly level region of the sea floor.
Absorption - permalink - collapse
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The process in which incident radiant energy is retained by a substance by conversion to some other form of energy.
NOAA National Weather Service - Cite This Source - This Definition ...
Polar Cap Absorption (PCA)
In solar-terrestrial terms, an anomalous condition of the polar ionosphere whereby HF and VHF (3 - 300 MHz) radiowaves are absorbed, and LF and VLF (3 - 300 kHz) radiowaves are reflected at lower altitudes than normal.
RadiofaxAbbreviation for radiofacsimile Radioisotope Snow GageA snow water equivalent gage based on the absorption of gamma radiation by snow; this gage can measure up to 55 inches water equivalent with a 2 to 5 percent error.
Along with absorption, scattering is a major cause of the attenuation of radiation by the atmosphere. Scattered radiation Solar radiation scattered by particles in the atmosphere.
absorption coefficient A measure of the amount of radiant energy, incident normal to a planar surface, that is absorbed per unit distance or unit mass of a substance.
H-AlphaIn solar-terrestrial terms, this absorption line of neutral hydrogen falls in the red part of the visible spectrum and is convenient for solar observations. The H-alpha line is universally used for patrol observations of solar flares.
AttenuationIt refers to the reduction of the radar beam power due to the reflection or absorption of energy when it strikes a target. The greatest attenuation occurs when the radar beam goes through very heavy rain.
In contrast to the IR channel, this wavelength undergoes strong absorption by WV in the atmosphere (i.e. this is not a 'window'), and so can be used to infer vertical distribution and concentration of WV - an important atmospheric constituent.
used in measuring this quantity and hence various types of hygrometers. These are: a) the psychrometer, which utilizes the thermodynamic method; b) the class of instruments which depends upon a change of physical dimension due to absorption of ...
These hollows are able to concentrate the sun's rays by reflection and the absorption of radiation is increased. As the hollows deepen, dewpoint and air temperature within these pockets rise, further accelerating the melting process.
Absorptivity The efficiency of radiation absorption.
Acclimatization The gradual adjustment of the body to new climatic or other environmental conditions, for example, the adjustment to low levels of oxygen at high altitudes.
band - 1. A range of wavelengths. 2. Frequency band. 3. Absorption band. 4. A range of radar frequencies, such as X band, S band.
bar - A unit of pressure equal to 106 dyne cm-2 (106 barye), 1000 millibars, 29.53 inches of mercury.
Radioisotope Snow Gage: A snow water equivalent gage based on the absorption of gamma radiation by snow; this gage can measure up to 55 inches water equivalent with a 2 to 5 percent error.
The glass in the external wall is specially coated to limit UV absorption and the southern facade also provides 40% shade. The construction design limits the suns heating penetration to only 17% through this sunny southern side.
Greenhouse Effect - The transmission of shortwave solar radiation by the atmosphere coupled with the selective absorption oflonger-wavelength terrestrial radiation, especially by water vapor and carbon dioxide, ...
precipitation attenuation—Reduction of power density because of absorption or reflection of energy by precipitation.
Atmospheric window The wavelength range between 8 and 11 micrometers in which little absorption of infrared radiation takes place.
Greenhouse Effect
Warming of the lower layers of the atmosphere due to its different absorption properties for long and short-wave radiation.
A process which occurs with the addition or loss of heat. The opposite of adiabatic. Meteorological examples include air parcels warming due to the absorption of infrared radiation or release of latent heat.
Diablo Wind ...
(or Ultraviolet Radiation) - Ultraviolet radiation from the sun plays a role in the formation of the ozone layer by acting as a catalyst for a chemical reaction that breaks apart oxygen molecules which then recombine to form ozone. The absorption ...
Atmospheric heating caused by solar radiation being readily transmitted inward through the earth's atmosphere but longwave radiation less readily transmitted outward, due to absorption by certain gases in the atmosphere.
Greenhouse Gases ...
 See also: Surface, Radiation, Air, Temperature, Atmosphere
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