Calculate the virtual temperature of moist air, which is the temperature dry air would have to achieve the same density as moist air.
Atmospheric Parameters
Virtual Temperature
About this calculator
Overview
Moist air is less dense than dry air at the same temperature and pressure. Virtual temperature allows meteorologists to treat moist air as if it were dry but warmer.
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Pro Tips
Formula: Tv = T * (1 + 0.61 * r)
T: Temperature in Kelvin
r: Mixing ratio (mass of water vapor / mass of dry air) in kg/kg
Always convert Celsius to Kelvin first (K = °C + 273.15).
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Fun Facts
"Water vapor molecules (H2O, mass 18) are lighter than Nitrogen (N2, mass 28) and Oxygen (O2, mass 32), which is why humid air is lighter than dry air."
"Virtual temperature is crucial for atmospheric buoyancy calculations and weather prediction models."
"In hot and humid conditions, Tv can be several degrees higher than the actual temperature T."
