Radiation 1) Emission or transfer of energy in the form of electromagnetic waves. 2) The process by which electromagnetic radiation is propagated through free space by virtue of joint undulatory variations in the electric and magnetic fields in ...
Radiation Fog
Source: Excerpt from The Book " Weather "
Distribution: Worldwide.
Category atmospheric radiation is an umbrella term for studies of atmospheric optics, radiative transfer in the atmosphere, light scattering on hydrometeors and molecules, band models of atmospheric transmission.
Radiation Fog: Fog produced results from the air near the ground being cooled to saturation by contact with the cold ground. The cooling of the ground results from night time loss of heat from the Earth to space (terrestrial radiation).
radiational cooling"In meteorology, the result of radiative cooling of the earth's surface and adjacent air.
RADIATIONAL COOLING The cooling of the earth's surface and the adjacent air. Although it occurs primarily at night, it happens when the earth's surface suffers a net loss of heat due to outgoing radiation. Related terms: terrestrial radiation ...
Radiation - (1) the process by which radiated energy moves through space or material media; (2) energy propagated through space or through material media in the form of an advancing disturbance in electric and magnetic fields (e.g.
RADIATION FOG
Fog that is created when radiational cooling at the earth's surface lowers the temperature of the air near the ground to or below its dew point.
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Energy transport through electromagnetic waves. See shortwave radiation and longwave radiation.
NOAA National Weather Service - Cite This Source - This Definition ...
Radiation
The process by which is energy is propagated through any medium by virtue off the wave motion of that medium.
Radiation fog ...
Radiation Laws
The four physical laws which fundamentally describe the behavior of blackbody radiation: Kirchhoff's law, Planck's law, Stefan-Boltzmann law and Wien's displacement law.
Radiational Cooling ...
Radiation
A wave of energy sent across space. Examples include heat and light energy
S ...
Radiation - The emission or release of energy in the form of waves or rays.
Radiation: Energy that moves through space or a medium in the form of a wave with electric and magnetic fields. Also called radiant energy.
Radiometer: An instrument that measures radiation power.
RADIATION FOG: See ground fog.
RADIOSONDE: An instrument attached to a weather balloon that transmits pressure, humidity, temperature and winds as it ascends.
Radiational Cooling - The cooling of the lower atmosphere during the nighttime hours. This, in combination with light surface winds and relatively clear skies, will often set the stage for fog.
Radiation fog Fog produced over land when radiational cooling reduces the air temperature to or below its dew point. It is also known as ground fog and valley fog.
Radiation
Emission or transfer of energy in the form of electromagnetic waves or particles.
Radon
A gas emitted by radioactive material in the Earth's crust and forming a minute constituency of the air near the ground.
RADIATIONAL COOLING- The earth's surface cooling by emitting longwave radiation. The best radiational cooling occurs on clear nights.
Radiation fog A ground-level fog formed by nocturnal radiational cooling of a humid air layer so that its relative humidity approaches 100 %; sometimes called ground fog.
Radio waves Long-wavelength, low-frequency electromagnetic waves.
radiation fog—Fog characteristically resulting when radiational cooling of the earth's surface lowers the air temperature near the ground to or below its initial dew point on calm, clear nights.
Radiation- Energy emitted in the form of electromagnetic waves. Radiation has differing characteristics depending upon the wavelength.
Radiation Budget A measure of all the inputs and outputs of radiative energy relative to a system, such as Earth. See Earth Radiation Budget Experiment.
Fog - Radiation: A form of fog caused by the cooling of moist air to below its dew point by the process of heat radiation. Radiation fog usually forms near the surface at night under clear skies and light wind conditions. Also known as ground fog.
solar radiation: electromagnetic waves that come from the sun. Examples are UV rays, visible light, and infrared radiation.
Global radiation
Global (short wave) radiation includes both that radiation energy reaching the ground directly from the sun, and that received indirectly from the sky, scattered downwards by clouds, dust particles etc.
Gust ...
Radiation from the sun heats the earth. As the water in the oceans are heated, evaporation takes place, the process whereby water is transformed in a gas, vapor, (LATENT HEAT OF EVAPORATION).
Radiation Fog: Fog formed over land at nights characterized by light winds, clear sky and moist air in the low levels of the atmosphere.
Radiation- The transferring of energy through electromagnetic waves.
Rain- Liquid precipitation with drops larger than .02 inches in diameter.
Rainbow- An arc or circle of colored light caused by the refraction of light by water droplets in the air.
Radiation fog: a fog that forms when outgoing longwave radiation cools the near-surface air below its dew point temperature.
RADIATION - Energy or particles given off by a paticular source. The term can be used to describe the radiation, such as light, given off by the sun, or the radiation of ocean waves from a storm system. This term is very general.
Solar Radiation
The total electromagnetic radiation emitted by the sun. To a first approximation, the sun radiates as a blackbody at a temperature of about 5700 K; hence, about 99.9% of its energy output falls within the wavelength interval from 0.
Solar radiation or heating received at the earth's surface. The name is derived from INcoming SOLar radiATION.
INSTABILITY ...
Infrared radiation- A form of energy with wave-lengths that are longer than visible light.
Ionosphere- The lower part of the thermosphere, where electrically charged particles called ions are found.
Infrared radiation (energy in the wavelength interval of 3- 80 micrometer) emitted by or being propagated through the atmosphere. It consists of both upwelling and downwelling components. Compare with terrestrial radiation.
ATMP ...
Infrared Radiation - with a wavelength from 0.7 to 200 micrometers.
Microwave Radiation- electromagnetic radiation which comprises the highest frequency radio energy.
Millibar- the scientific unit used in measuring and reporting atmospheric pressure.
Visible radiation Electromagnetic radiation lying within the wavelength interval to which the human eye is sensitive, the spectral interval from approximately 0.4 to 0.7 microns (4000 to 7000 angstroms).
net radiationThe difference between upwelling and downwelling, covering longwave and shortwave radiation.
ELECTROMAGNETIC RADIATION
Also called radiation, it is waves of energy propagated though space or through a material media.
wavelength - In radiation, the distance between periodic spatial repetitions of an electromagnetic wave at a given instant of time; used extensively to classify the nature of the radiation, ...
Greenhouse effectThe warming of the atmosphere by the trapping of longwave radiation (heat) being radiated to space. The gases most responsible for this effect are water vapor and carbon dioxide.
SCATTERING The process by which small particles suspended in the air diffuse a portion of the incident radiation in all directions. This is a primary reason for colors, such as blue skies, rainbows, and orange sunsets.
TransmitterThe radar equipment used for generating and amplifying a radio frequency (RF) carrier signal, modulating the carrier signal with intelligence, and feeding the modulated carrier to an antenna for radiation into space as electromagnetic ...
Gamma RayA type of electromagnetic radiation with a very short wavelength and high energy level. Generally, emitted during radioactive decay of a substance.
MicrowaveA type of electromagnetic radiation with wavelengths between those of infrared radiation and radio waves.
However, the radiation received by the radar antenna consists of the average reflectivity across the entire beam, so the reflectivity and associated rainfall rates are underestimated.
These properties are interconnected by the various physical processes such as precipitation, evaporation, infrared radiation, convection, advection, and turbulence.
To understand why, it is necessary to consider that thermal energy during the 24 hours is radiating continually from the surface of the earth (at long wavelengths), and incoming solar (relatively short wave) radiation obviously only when the sun is ...
The climate data that NCDC receives are from a wide variety of sources, including satellites, radar, remote sensing systems, NWS cooperative observers, aircraft, ships, radiosonde, wind profiler, rocketsonde, solar radiation networks, ...
Sea and land respond differently to solar radiation. Land heats quickly, because the solar radiation is almost totally absorbed at the surface, and the heat penetrates only slowly into the earth.
Technically, albedo refers to the ratio of the amount of radiation (visible or total solar) reflected by a surface to the amount of radiation incident upon it.
Airborne Snow Water Equivalent Measurement Theory A theory based on the fact that natural terrestrial gamma radiation is emitted from the potassium, uranium, and thorium radioisotopes in the upper eight inches of the soil.
Greenhouse Effect - The atmosphere allows solar radiation to reach the earth relatively easily.
A device that can detect electromagnetic radiation with wavelengths that are in the visible portion of the electromagnetic radiation spectrum.
Different from reflection, where radiation is deflected in one direction, some particles and molecules found in the atmosphere have the ability to scatter solar radiation in all directions.
green house effect:process in which green house gases, like carbon dioxide in the Earth's atmosphere, cause thermal radiation emitted by the Earth's surface to be reflected back down, therefore causing the climate to warm.
Albedo - how much of incoming radiation, such as light, is reflected off a surface.
Anticyclone - large high pressure area.
LANGLEY: A unit of energy per unit area, equal to 1 gramcalorie/cm² and commonly employed in radiation measurement.
LEEWARD: Facing away from the wind. ...
Winds are caused by unequal heating and cooling of both the ground and atmosphere, which is affected by such things as solar radiation, the Earth's rotation, cloud formation, etc.
 See also: High, Atmosphere, Surface, Air, Center
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