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:

    Future. That period of time in which our affairs prosper, our friends are true and our happiness is assured.
    Ambrose Bierce (1842–1914)

    I am constant as the northern star,
    Of whose true-fixed and resting quality
    There is no fellow in the firmament.
    William Shakespeare (1564–1616)