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AIR PRESSURE |
The pressure exerted by the air |
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ATMOSPHERIC PRESSURE |
The pressure exerted on an object as a result of the weight of the column of air above the object |
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BAROMETRIC PRESSURE |
the same as Atmospheric Pressure |
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DEW POINT TEMPERATURE
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The temperature to which air must be cooled for saturation to occur (given a constant pressure and constant water-vapor content) |
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ENERGY |
the capacity for doing work and overcoming resistance |
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GRAVITY |
the force imparted by the earth which tends to draw all bodies in the earth's sphere of influence toward the center of the earth |
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HEAT |
a form of energy transferred between objects or systems as a result of a difference in temperature; not the same as temperature |
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HUMIDITY |
some measure of the air's water-vapor content |
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INFRARED RADIATION : |
radiation which is less energetic than visible radiation and more energetic than microwave radiation; typically, the radiation emitted by the earth's surface or that emitted in an oven or on a range |
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LONGWAVE RADIATION |
radiation having a wavelength greater than that of visible light |
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MEAN ANNUAL TEMPERATURE |
the average temperature for the entire year at any given location |
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MEAN DAILY TEMPERATURE |
the average of the highest and lowest temperatures during a 24-hour period |
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RELATIVE HUMIDITY |
a measure of the water vapor content of the air at a given temperature; the amount that the air could contain at the same temperature, expressed as a percentage |
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SHORTWAVE RADIATION |
radiation having a length equal to or less than that of visible light |
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SOLAR RADIATION |
the radiation emitted by the sun |
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STANDARD ATMOSPHERIC PRESSURE |
the pressure exerted by a 760 millimeter column of mercury at sea level at a temperature of 0 degrees Celsius; equal to 1013.25 millibars (mb),29.92 inches of mercury (in of Hg),or 14,7 per square inch (lb/in2) |
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STATION PRESSURE
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the actual pressure measured at a given station location after being corrected for temperature, gravity, and instrument error |
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TEMPERATURE
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the degree of hotness or coldness as measured an some definite temperature scale |
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TERRESTRIAL RADIATION :
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the total amount of infrared radiation which is emitted from the earth's surface |
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TRANSPIRATION |
the process by which plants transfer water within to water vapor in the atmosphere |
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ULTRAVIOLET RADIATION |
radiation having a wavelength shorter than wavelengths of visible light and longer than those of X rays and, in meteorology, typically refers to a portion of the radiation given off by the sun |
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VAPOR PRESSURE |
in meteorology, the pressure exerted only by molecules of water vapor in the air |
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WIND DIRECTION |
the direction from which the wind is blowing |
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WIND SHEAR |
the local variation of the wind speed and/or direction in a given direction |