Pegasus FlyAway Kit
47
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Columbia Weather Systems, Inc.
Reference
Glossary
Aspirating Radiation Shield
A device used to shield a sensor such as a temperature probe from
direct and indirect radiation and rain while providing access for
ventilation.
Barometric Pressure
The pressure exerted by the atmosphere as a consequence of
gravitational attraction exerted upon the “column” of air lying
directly above the point in question.
Celsius Temperature Scale
A temperature scale with the ice point at 0 degrees and the boiling
point of water at 100 degrees.
Dew Point
The temperature to which a given parcel of air must be cooled at
constant pressure and constant water-vapor content in order for
saturation to occur. When this temperature is below 0°C or 32°F, it
is sometimes called the frost point.
Fahrenheit Temperature Scale
A temperature scale with the ice point at 32 degrees and the boiling
point of water at 212 degrees.
Heat Index
The heat index or apparent temperature is a measure of discomfort
due to the combination of heat and high humidity. It was developed
in 1979 and is based on studies of evaporative skin cooling for
combinations of temperature and humidity.
