Meteorology: Random Listings 
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Abbreviation for Instrument Flight Rules, but commonly used to refer to the weather and/or flight conditions to which these rules apply, i.e. low visibility.
Category:Meteorology
A type of cistern barometer in which the level of mercury in the cistern is adjusted to the zero point of the scale before each reading.
Category:Meteorology
The difference between the air temperature and the dew-point. Also called dew-point deficit, dew-point depression.
Category:Meteorology
Same as an upper air observation, but commonly used to refer to a single complete radiosonde observation.
Category:Meteorology
