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:

    The last time we used battleships was in the Spanish-American War. And what did we get out of that? Cuba. And we gave that back.
    Robert Riskin (1897–1955)

    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)