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:
“It is a truer truth, it is better and fairer news, and no time will ever shame it, or prove it false.”
—Henry David Thoreau (1817–1862)
“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)
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