Light and Optics online meteorology guide
Graphic by: Yiqi Shao
Rainbows, sunsets and halos; a spectacular display of colors and visuals in the sky called "atmospheric optics".
lightning safety
family safety
lightning
severe storms
According to NOAA Storm Data, lightning seems to target males.
Lightning is whitish in color, having the combined spectrum of Oxygen and Nitrogen. It sometimes appears differently colored against different backgrounds and surroundings in contrast to yellowish artificial lights.
Main article: Lightning
Articles in category "Lightnings"
There are 9 articles in this section of this category.
lightning - Lightning is a transient, high-current electric discharge with pathlengths measured in kilometers. The most common source of lightning is the electric charge separated in ordinary thunderstorm clouds (cumulonimbus).
Lightning: All forms of visible electrical discharges moving through the atmosphere, usually eminating from tall cumulus and cumulonimbus clouds during thunderstorms.
Lightning - Any and all of the various forms of visible electrical discharge caused by thunderstorms. Severe thunderstorms usually have frequent -- sometimes continuous -- lightning.
lightning stroke"In a cloud-to-ground discharge, a leader plus its subsequent return stroke. In a typical case, a cloud-to-ground discharge is made up of three or four successive lightning strokes, most following the same lightning channel.
Lightning
The flash of light accompanying a sudden electrical discharge which takes place from or inside a cloud, or less often from high structures or the ground or from mountains. A large electrical spark.
LIGHTNING
A sudden and visible discharge of electricity produced in response to the build up of electrical potential between cloud and ground, between clouds, within a single cloud, or between a cloud and surrounding air.
Lightning - any visible electrical discharge produced by thunderstorms
Liquid - one of the basic three phases of matter; characterized by free movement of the constituent molecules among themselves but without the tendency to separate ...
Lightning Channel The irregular path through the air along which a lightning discharge occurs.
Light Icing: The rate of ice accumulation that may create a problem if the flight is prolonged in this environment (over one hour). Occasional use of de-icing equipment removes/prevents accumulation.
Light Bridge
In solar-terrestrial terms, it is observed in white light, a bright tongue or streaks penetra- ting or crossing sunspot umbrae. The appearance of a light bridge is frequently a sign of impending region division or dissolution ...
Lightning - a giant electrical spark jumping between clouds or between a cloud and the ground.
Mesoscale - a study of thunderstorms and similarly sized weather features. These things takes less than a day to pass, usually.
LIGHTNING: An electrical discharge from a thunderstorm.
LIKELY: In probability of precipitation statements, the equivalent of a 60 or 70 percent chance.
Lightning: A huge electric discharge that occurs between the ground and a cloud, between clouds, or within a cloud.
Lithosphere: The solid portion of planet Earth, or landcover.
Lightning- any and all forms of visible electrical discharges produced by thunderstorms.
Lightning - Generally, any and all of the various forms of visible electrical discharge produced by thunderstorms.
Low-level Jet - A region of relatively strong winds in the lower part of the atmosphere.
Light Breeze
Wind with a speed between 4 and 6 knots.
Lightning
Luminous manifestation accompanying a sudden electrical discharge which takes place from or inside a cloud, or, less often, high structures on the ground or from mountains.
Lightning A flash of light produced by an electrical discharge in response to the buildup of an electrical potential between cloud and Earth's surface, or between different portions of the same cloud.
Lightning - A sudden flash of light generated by the flow of electrons between oppositely charged parts of a cumulonimbus cloud or between the cloud and the ground.
lightning—Generally, any and all forms of visible electrical discharge produced by a thunderstorm.
lithometeor—The general term for dry particles suspended in the atmosphere such as dust, haze, smoke, and sand.
Lightning- Any form of visible electrical discharges produced by thunderstorms.
Likely- In probability of precipitation statements, the equivalent of a 60 or 70 percent chance.
Lightening A discharge of atmospheric electricity accompanied by a vivid flash of light. During thunderstorms, static electricity builds up within the clouds.
LIGHT WAVES
That part of the electromagnetic spectrum that contains visible light. The colors, from longest wave length to shortest, are red, orange, yellow, green, blue, indigo, and violet (ROY G. BIV).
Related term: visible light ...
TWILIGHT Often called dusk, it is the evening period of waning light from the time of sunset to dark. The time of increasing light in the morning is called dawn.
Twilight (including civil, nautical, and astronomical) An enquiry from my adult evening class at the University prompted this selection.
Ball lightning
A rare form of long-lived lightning that appears as a small, glowing ball. Ball lightning has been reported to pass through solid objects such as windows and walls without dissipating.
Ball lightning A rare form of lightning that may consist of a reddish, luminous ball of electricity or charged air.
Barograph A recording barometer.
White Light (WL)
Sunlight integrated over the visible portion of the spectrum (4000 - 7000 angstroms) so that all colors are blended to appear white to the eye.
White Light Flare ...
Lightning- A sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud or between a cloud and the ground.
Marine climate- The climate of some coastal regions, with relatively warm winters and cool summers.
Lightning that appears in a shape of a luminous sphere. Its formation is still not fully explained.
Banner cloud ...
LIGHTNING: All of the various forms of electrical discharge produced by thunderstorms.
Lightning- An electrical discharge produced by a thunderstorm.
Low- An area of low atmospheric pressure.
Maritime Air Mass- An air mass that forms over water. It is usually humid, and may be cold or warm.
Light air
Beaufort force 1. Sustained wind speed between 1 and 3 knots. Ripples with the appearance of scales are formed, but without foam crests.
Light breeze ...
Lightning: A visible electrical discharge produced by a thunderstorm. The discharge may occur within or between clouds, between the cloud and air, between a cloud and the ground or between the ground and a cloud.
Lightning - An enormous and very hot spark of electricity produced by thunderstorms. The lightning bolt itself can heat the air through which it travels to 54,000° F.
BALL LIGHTNING - A fireball (or plasma ball) created from a bolt of lightning. This is rare and not much is known about this type of lightning.
ULTRALIGHT - A small single place aircraft weighing less than 155 lbs if unpowered or 254 lbs if powered (U.S. FAA Regulations)
UPWIND - Into the wind, or in the direction of the prevailing wind.
Top of Page ...
Staccato Lightning - A CG lightning discharge which appears as a single very bright, short-duration stroke, often with considerable branching.
LIDAR: Light detecting and ranging. A technique used to detect atmospheric constituents or related parameters such as atmospheric extinction coefficient.
Eastern Daylight Time
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: CDT, LDT, MDT, PAC, PDT
EFCT - permalink - collapse ...
Airlight formula See Koschmieder's law. Air meter A small anemometer with flat vanes which indicates the number of linear feet or meters of air which have passed the instrument during its exposure.
ASTRONOMICAL TWILIGHT The time after nautical twilight has commenced and when the sky is dark enough, away from the sun's location, to allow astronomical work to proceed. It ends when the center of the sun is 18° below the horizon.
Radiosonde - A light-weight instrument package carried aloft by a weather balloon; radios to earth upper atmosphere data.
SNOW FLURRIES: Light snow showers, usually of an intermittent nature with no measurable accumulation.
halo: a ring of light that appears to encircle the sun or moon. This occurs when the light from the sun or moon shines through cirrus clouds.
Ball lightningA relatively rarely seen form of lightning, generally consisting of an orange or reddish ball of the order of a few cm to 30cm in diameter and of moderate luminosity, ...
RainbowA luminous arc featuring all colors of the visible light spectrum (red, orange, yellow, green, blue, indigo, and violet). It is created by refraction, total reflection, and the dispersion of light.
CGCloud-to-Ground LightningChanceA National Weather Service precipitation descriptor for 30, 40, or 50 percent chance of measurable precipitation (0.01 inch). When the precipitation is convective in nature, the term scattered is used.
In nautical use, a severe local storm considered as a whole, that is, winds and cloud mass and (if any) precipitation, thunder and lightning.
scatteringThe process in which a beam of light is diffused or deflected by collisions with particles suspended in the atmosphere.
Anvil Crawler[Slang], a lightning discharge occurring within the anvil of a thunderstorm, characterized by one or more channels that appear to crawl along the underside of the anvil.
Visible Satellite ImageryThis type of satellite imagery uses reflected sunlight (this is actually reflected solar radiation) to see things in the atmosphere and on the Earth's surface.
photoelectric Of or relating to the electrical effects of light, including the emission of electrons, the generation of a voltage, or a change in resistance.
Therefore, during the day the air over the land becomes lighter than the air over the sea, and a pressure gradient is set up that accelerates a wind from sea to land, the cool "sea breeze" of the daytime that blows perpendicularly to the coastline.
Images obtained using reflected sunlight at visible wavelengths, in the range 0.4 to 1.1 micrometres. Visible imagery is displayed in such a way that high reflectance objects, e.g. dense cirrus from CB clusters, fresh snow, nimbostratus etc.
CA - Cloud-to-Air lightning.
Cap (or Capping Inversion) - A layer of relatively warm air aloft (usually several thousand feet above the ground) which suppresses or delays the development of thunderstorms.
CA - Cloud-to-Air lightning.
Cap (or lid) - A layer of warm air, several thousand feet above the surface, which suppresses or delays the development of thunderstorms.
 See also: Weather, Air, Cloud, Temperature, Water
|
