Himidity is the amount of water vapor present in the air. Relative humidity is a measure of the amount of water vapor present in the air compared to the amount needed for saturation at a specific...
Relative Humidity (RH), is how much water vapor is in the air at a certain time. Humidity, in my opinion, is just another way of saying how much water vapor is in the air.
I'm assuming you're asking for the difference between specific humidity and relative humidty. If so... Relative humidity is exactly that: it is relative to the temperature. Warmer air can hold more...
One can calculate the absolute humidity (AH) from the relative humidity (r) using three equations: (1) the equation for mixing ratio, (2) an equation for relative humidity expressed in terms of...