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:
“...we avoid hospitals because ... they’ll kill you there. They overtreat you. And when they see how old you are, and that you still have a mind, they treat you like a curiosity: like “Exhibit A” and “Exhibit B.” Like, “Hey. nurse, come on over here and looky-here at this old woman, she’s in such good shape....” . Most of the time they don’t even treat you like a person, just an object.”
—Annie Elizabeth Delany (b. 1891)
“Liberalism, austere in political trifles, has learned ever more artfully to unite a constant protest against the government with a constant submission to it.”
—Alexander Herzen (1812–1870)