Understanding DEW: A Key Measure of Atmospheric Moisture

DEW stands for "Dewpoint Evaporation Weight". It is a measure of the amount of water vapor in the air that would condense into liquid water if the temperature were to drop to a specific dew point temperature. The dew point temperature is the temperature at which the air becomes saturated with water vapor and can no longer hold any more moisture.

In other words, DEW is a way to express the amount of moisture in the air as a weight of water per unit of air. It is often used in meteorology and agriculture to assess the humidity levels in the atmosphere and to predict weather conditions.

For example, if the dew point temperature is 50°F (10°C), it means that the air can hold 50 grams of water per cubic meter of air at that temperature. If the actual temperature is higher than the dew point temperature, the air will be more humid, and if the actual temperature is lower than the dew point temperature, the air will be less humid.

I hope this helps! Let me know if you have any other questions.