The Wind Profile Power Law is an empirical relationship between the wind speeds at one height, and those at another.
power-law profile"A formula for the variation of wind with height in the surface boundary layer.
power - The rate, often expressed in watts, at which energy is exchanged or transmitted. In radar it usually refers to the rate at which electromagnetic energy is radiated from or received at the antenna.
Power: A radar equation to describe the amount of power that a radar emits. P = I * V = V * V / R = I * I / R, where I is current (amps), V is voltage (volts), R is resistance (ohms), P is power (watts).
Power: The rate of change of energy over time, often expressed in watts.
Precession: The wobble of the Earth's axis. This alters the relationship of the solstices with the distance from the Earth to the Sun.
power density—In radar meteorology the amount of radiated energy per unit cross sectional area in the radar beam.
Peak Power The amount of power transmitted by a radar during a given pulse. Note that because these pulses are widely spaced, the average power will be much smaller.
powered by FreeFind Used the above search engine to search this site!
"Hello Welcome to our site"
The Atlantic Hurricane Season June 1, 2006 to November 30, 2006.
The Pacific Hurricane Season: May 15, 2006 to November 30, 2006 ...
POWER ON STALL - A stall which typically occurs following takeoff, or during the initial climbout.
POWER TO WEIGHT RATIO - The ratio of the weight of the aircraft divided by the engines horsepower.
POWER FLASH - A flash of light caused by a powerline or transformer as a storm knocks out power. Common in strong wind events and tornadoes, especially at night.
The powerful winds that accompany tropical cyclones and east coast lows can and do generate huge waves. If these waves are not intercepted by land areas, they may traverse hundreds, even thousands of kilometres of ocean as large, long swells.
Wave Power
The rate at which wave energy is transmitted in the direction of wave propagation. Normally expressed in kilowatts per metre of wave crest length.
Waverider Buoy ...
Unit of power in the MKS system of units; energy per unit of time, one Joule per second (1 J/s). Abbreviated W.
Wave Period
Time, in seconds for the passage of successive wave crests.
comments powered by Disqus
News Photo Galleriesview all
Thunder FanFest in Bricktown, celebrating the team making it to the NBA playoffs, in Oklahoma City, Friday, April 16, 2010. Photos by Nate Billings, The Oklahoman ...
SWITCHING POWER SUPPLY: A power supply which achieves its output regulation by means of one or more active power handling devices which are alternately placed in the "off" or "on" states.
The portion of power scattered back in the incident direction.
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Absorption, Radar, Radar Data Acquisition, Range Normalization, RCV, reflection ...
Nor'easter - A powerful low-pressure system that moves north along the Atlantic Coast. It's called a Nor'easter because the coastal winds are from the northeast. Heavy rain, snow and high surf often occur.
Candlepower Luminous intensity expressed in candelas. Capacity correction The correction applied to a mercury barometer with a nonadjustable cistern in order to compensate for the change in level of the cistern as the atmospheric pressure ...
In addition, TAFB provides support to NHC through manpower and tropical cyclone intensity estimates from the Dvorak technique.
Range NormalizationA receiver gain function in the radar which compensates for the effect of range (distance) on the received power for an equivalent reflectivity.
where I is current (amps), V is voltage (volts), R is resistance (ohms), P is power (watts).
dBZNondimensional "unit" of radar reflectivity which represents a logarithmic power ratio (in decibels, or dB) with respect to radar reflectivity factor, Z.
event or several larger radio events (10cm) per day (Class M Flares)Active Conservation StorageIn hydrologic terms, the portion of water stored in a reservoir that can be released for all useful purposes such as municipal water supply, power, ...
The Center houses the world's largest wind tunnel and the world's most powerful supercomputer system. (2) The Dryden Flight Research Center, Edwards Air Force base, California, formerly part of ARC, became a separate entity March 1994.
aerosol Angstrom coefficientOften incorrectly used synonymously with "aerosol Angstrom exponent", but should instead refer to the aerosol optical depth at the reference wavelength (1 um) in Angstrom’s power-law representation.
This may lead to dangerous walking or driving conditions and the pulling down of power lines and trees. A warning is used for winter weather conditions posing a threat to life and property.
Because the Earth is nearly a perfect radiator, the radiation from its surface varies as the fourth power of the surface's absolute temperature.
BackscatterThe portion of power scattered back in the incident direction.BacksightIn hydrologic terms, a rod reading taken on a point of known elevation, a benchmark or a turning point.
A powerful oxidizing agent that is considered a pollutant in the lower troposphere but an essential chemical in the stratosphere where it protects the earth from high-energy ultraviolet radiation from the sun.
"Reflectivity" is the amount of transmitted power returned to the radar receiver and is often designated by the symbol 'z'.
Such models require knowledge of the atmosphere and oceans that are beyond us at the moment, and computing power that can represent all the processes that are going on all the time. A rather tall order.
They do this by flying aircraft equipped with weather instruments straight into the middle of these powerful storms.
It represents a logarithmic power ratio (in decibels, or dB) with respect to radar reflectivity factor, Z. The value of Z is a function of the amount of radar beam energy that is backscattered by a target and detected as a signal (or echo).
Power failures likely.A Category 3 cyclone's strongest winds are VERY DESTRUCTIVE winds with gusts of 170 - 225 km/h.These winds correspond to the highest category on the Beaufort scale, Beaufort 12 (Hurricane).
My academic studies of the science of weather did not diminish my love for the beauty and awesome power of the weather. In fact, the more I studied the science behind the weather, the deeper my weather eyes saw into the events unfolding before me.
(Sulfur Dioxide) A strong smelling, colorless gas that is formed by the combustion of fossil fuels. Power plants, which may use coal or oil high in sulfur content, can be major sources of SO2.
10 Free Tornado VideosWhere is Tornado Alley?Free Tornado PowerPoint
Related Articles ...
Gamma radiation Electromagnetic radiation having very short wavelength and great penetrating power.
Geologic time A span of millions or billions of years in the past.
Air Pollution- The existence in the air of substances in concentrations that are determined unacceptable. Contaminants in the air we breathe come mainly from manufacturing industries, electric power plants, automobiles, buses, and trucks.
Ice Storm Warning - Issued when damaging accumulations of ice are expected during a freezing rain event. Significant ice accumulations are 1/4 of an inch or greater leading to dangerous walking or driving conditions and the pulling down of power ...
These plants generally have adapted to more arid climates in establishing powerful root systems which can lift water from great depths. The root systems of some phreatophytes have been traced to the depths of 45 feet.
which freezes on impact to form a coating of ice upon the ground and on the objects it strikes. A freezing rain warning is usually issued when slippery driving and walking conditions are expected, and/or when freezing rain may damage trees, power ...
The powerful winds can pick up a railroad locomotive, lift a water tower off the ground, drive blades of grass into walls, just like a hammer and a nail.
Hurricanes begin in a tropical low-pressure area where cumulonimbus cluster in a region of high sea surface temperature. Conditions as yet poorly understood cause this area to converge and shrink into a powerful vortex, ...
 See also: Weather, Air, Temperature, High, Water
|
