Time Constant

A time constant is the amount of time it takes for a meteorological sensor to respond to a rapid change in a measurand until it is measuring values within the accuracy tolerance usually expected of the sensor.

This most often applies to measurements of temperature, dewpoint temperature, humidity and air pressure. Radiosondes are especially affected due to their rapid increase in altitude.

Famous quotes containing the words time and/or constant:

    O time that cut’st down all!
    And scarce leav’st here
    Memoriall
    Of any men that were.
    Robert Herrick (1591–1674)

    Mr. Clarke played the King all evening as though under constant fear that someone else was about to play the Ace.
    Eugene Field (1850–1895)