Definition - What does Absolute Humidity mean?
Absolute humidity is the numerical measurement of the amount of water vapor in a given atmospheric environment, irrespective of temperature. It is measured as grams of moisture per cubic meter of air.
Corrosionpedia explains Absolute Humidity
Absolute humidity is a vital factor impacting the occurrence of corrosion in a metal. Atmospheric corrosion is a chemical reaction that requires water to take place. The absolute humidity is directly proportional to the likelihood and severity of corrosion.