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:
“I thank you for your letter. I was very glad to get it; and I am glad again to write to you. However slow the steamer, no time intervenes between the writing and the reading of thoughts, but they come freshly to the most distant port.”
—Henry David Thoreau (1817–1862)
“Is constant love deemed there but want of wit?”
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