Parameter 1) A term used loosely by many meteorologists for almost any meteorological quantity or element. 2) An arbitrary constant or variable so appearing in a mathematical expression that changing it gives various cases of the phenomenon ...
The Rossby parameter is a nondimensional number used in geophysics and meteorology which arises due to the northward variation of the Coriolis force caused by the spherical shape of the Earth. It is important in the generation of Rossby waves.
parameter - 1. In general, any quantity of a problem that is not an independent variable.
Parameter
A subset of the group of evaluations that constitute each element of an observation.
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A subset of the group of evaluations that constitute each element of an observation.
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Parameters
Terms for using data resources. CD-ROM available.
Credits and Acknowledgments for WW2010.
Department of Atmospheric Sciences (DAS) at
the University of Illinois at Urbana-Champaign.
dimensionless parameter"See nondimensional parameter.
dimensions"See fundamental dimensions.
dimethyl disulfide"Naturally occurring sulfur gas, formula CH3SSCH3; minor constituent in the natural sulfur cycle.
Thresholds governing the issuance of Small Craft Advisories for Rough Bar are specific to local geographic areas, and are based upon parameters such as wave steepness, wind speed and direction, and local bathymetry.
RecurrenceUsed especially in reference to the recurrence of physical parameters every 27 days (the rotation period of the sun)Red FlagThis a fire weather program which highlights the onset of critical weather conditions conducive to extensive ...
of pressure, temperature, and humidity; a modulator for the conversion of the output of the transducers to a quantity which controls a property of the radio frequency signal; a selector switch which determines the sequence in which the parameters are ...
seasonal variation The change in a set of meteorological parameters averaged over three months. Seasonal variation is the largest climatic variation, and temperature is the most fre- quently observed meteorological parameter.
single-column modeling (SCM)An approach to the development and testing of cloud formation and parameterizations.
ADAPTATION (ADAPTABLE) PARAMETERGenerally, data related to a specific WSR-88D unit.
Parameter: Elements which make up a weather observation such as present weather/visibility/temperature/pressure, etc.
Parcel: A small volume of air.
The method is emperical and considers a number of parameters (ingredients) which cause snowfall, ...
Since both parameters are important for severe weather development, higher values generally indicate a greater potential for severe weather.
Radiosonde A balloon-borne instrument that measures meteorological parameters from the Earth's surface up to 20 miles in the atmosphere.
Weather forecasting includes the use of objective models based on certain atmospheric parameters, along with the skill and experience of a meteorologist. Also called a prediction.
DAMPING RATIO: A parameter used to describe the response of a wind vane to a sudden change in wind direction.
The temperature difference between 850 mb and 500 mb is used to parameterize the vertical temperature lapse rate. The 850 dew point provides information on the moisture content of the lower atmosphere.
Sounding - A set of data measuring the vertical structure of an atmospheric parameter (temperature, humidity, pressure, winds) at a given time.
Difluence in an upper level wind field is considered a favorable condition for severe thunderstorm development (if other parameters are also favorable). But difluence is not the same as divergence.
External processes, such as solar-irradiance variations, variations of the Earth's orbital parameters (eccentricity, precession, and inclination), lithosphere motions, and volcanic activity, are factors in climatic variation.
Composite Chart - a map constructed by overlaying critical values of atmospheric parameters analyzed to assess severe weather potential.
NORMAL- The average of a certain weather parameter over several years (commonly 30 or more years). For example, the normal yearly precipitation being 30 inches means that over a 30 year period the average is 30 inches per year.
The serial number assigned to 27-day rotation periods of solar and geophysical parameters. Rotation 1 in this sequence was assigned arbitrarily by Bartel to begin in January 1833.
Base Flood ...
This is a derived parameter which quantifies the tendency for airflow in the lower levels of the troposphere to 'corkscrew' and thus encourage the formation of storms with strong mesoscale circulations, possibly leading to tornadic activity.
gradient—In meteorology, a horizontal decrease in value per unit distance of a parameter in the direction of maximum decrease; most commonly used with pressure, temperature, and moisture.
The parameters may include temperatures (high, low, and deviation), pressure, precipitation (rain, snow, etc.), winds (speed and direction), thunderstorms, amount of clouds, percent relative humidity, etc.
Sky Condition- The state of the sky in terms of such parameters as sky cover, layers and associated heights, ceiling, and cloud types.
Sky Cover- The amount of the sky which is covered by clouds or obscurations in contact with the surface.
FORECAST A statement of expected future occurrences. Weather forecasting includes the use of objective models based on certain atmospheric parameters, along with the skill and experience of a meteorologist. Related term: prediction ...
Radiosonde - an instrument lifted into the air via balloon that measures various atmospheric parameters such as temperature, pressure wind and humidity.
Rain - The Wet Stuff.
STORM RELATIVE - Estimation of wind, moisture, and temperature parameters with storm motion taken into consideration.
Nevertheless it can be useful to look at an index to help in determining if conditions are unfavourable to undertake strenuous sporting activity. Wet Bulb Global Temperature (WBGT) is a parameter that is often used for this purpose.
Ocean currents and water temperatures have more influence on climate than do purely meteorological parameters. Whether the earth is cooling or warming has more to do with the oceans than the atmosphere and its short-term dynamics.
program (or set of programs) that is designed to systematically solve a certain kind of problem. Radars employ an algorithm to analyze radar data and determine storm motion, probability of hail, anticipated rainfall, and other storm parameters.
is designed to systematically solve a certain kind of problem. WSR-88D radars (NEXRAD) employ algorithms to analyze radar data and automatically determine storm motion, probability of hail, VIL, accumulated rainfall, and several other parameters.
 See also: Surface, Temperature, Air, Pressure, Water
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