Aurora Luminous phenomena, in the form of arcs, bands, draperies, or curtains in the high atmosphere over high latitudes. Auroras are related to magnetic storms and the influx of charged particles from the Sun.
auroral zone"An approximately circular region around the two geomagnetic poles within which there is a maximum of auroral activity. It lies about ten to fifteen degrees of geomagnetic latitudes from the geomagnetic poles.
aurora: appears as greenish-white and sometimes pink light in the night sky over the middle and high latitudes. Called the aurora borealis in the Northern Hemisphere and the aurora australis in the Southern Hemisphere.
Aurora Borealis - also known as the northern lights - The luminous, radiant emission from the upper atmosphere over middle and high latitudes, and centred around the earth's magnetic poles.
Aurora - A bright and ever changing display of light caused by solar radiation interacting with the upper atmosphere in the region of the poles.
Aurora Glowing light display in the nighttime sky caused by excited gases in the upper atmosphere giving off light.
Aurora borealis A luminous phenomenon in the night sky consisting of overlapping curtains of greenish-white light, sometimes fringed with pink, appearing in the ionosphere of high latitudes.
aurora—A luminous, radiant emission over middle and high latitudes confined to the thin air of high altitudes and centered over the earth's magnetic poles.
Aurora - a luminous phenomenon in the night sky which results from a radiation emission in the upper atmosphere over middle and high latitudes
Aurora Australis - the name for the aurora of the southern latitudes ...
AURORA
It is created by the radiant energy emission from the sun and its interaction with the earth's upper atmosphere over the middle and high latitudes.
Auroras See solar wind.
Automatic Picture Transmission (APT) System developed to make real-time reception of satellite images possible whenever an APTequipped satellite passes within range of an environmental satellite ground station.
Aurora
A faint visual phenomenon associated with geomagnetic activity, which occurs mainly in the high-latitude night sky; typical auroras are 100 to 250 km above the ground
Aurora Australis ...
Aurora Borealis - It's often called the "northern lights". It occurs 50 to 100 miles above the earth, when energetic particles from a solar storm cause the gases in the upper atmosphere to glow. Auroras can last between a few minutes to several hours.
Aurora borealis- A colorful, glowing display in the sky caused when particles from the sun strike oxygen and nitrogen atoms in the ionosphere; also called the Northern Lights.
Barometer- An instrument used to measure changes in air pressure.
Aurora Australis: Southern Lights.
Aurora Borealis: Northern Lights.
Automated Weather Report: A weather observation (REPORT) taken by an automatic weather station.
Autumn Equinox: Occurs on or about September 21.
Aurora Borealis
Main article: Space weather
Weather is not limited to planetary bodies. A star's corona is constantly being lost to space, creating what is essentially a very thin atmosphere throughout the Solar System.
What is an Aurora?NASA Weather Satellites
Tornadoes
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Unusual atmospheric phenomena such as sun dogs, halos, rainbows, aurora borealis, lenticular clouds, and stories about a long-term dry/cold/wet/warm spell, ...
This may include: unusual atmospheric phenomena such as sun dogs, halos, rainbows, aurora borealis, lenticular clouds, and stories about a long-term dry/cold/wet/warm spell. 2) Public educational information and activities, ...
Light Show Of The Heavens
The Aurora
Space Weather
The Fire of St Elmo
The American Monsoon
Drought: The Silent Disaster
Dust In The Wind
Blowing Dust: Gone with the Wind ...
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Anticyclonic Rotation, Aurora Australis, Aurora Borealis, Coriolis force, Northern Lights, NRN
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Extremely thin air at these altitudes is exited by the solar radiation causing the gas to become ionized. AURORAS occur when these ions are affected by the earth's magnetic field near the poles. The NORTHERN LIGHTS are an example of an aurora.
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INFORMATION
CLASSIC SUPERCELL DIAGRAM ...
1) A current or expected nonhazardous event of general interest to the public that can usually be covered with a single message (e.g., unusual atmospheric phenomena such as sun dogs, halos, rainbows, aurora borealis, lenticular clouds, ...
Northern LightsCommon name for Aurora Borealis; the luminous, radiant emission from the upper atmosphere over middle and high latitudes, and centred around the earth's magnetic poles.
 See also: Surface, Light, Air, Weather, High
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