pyrcel.thermo.rho_air¶
- pyrcel.thermo.rho_air(T, P, RH=1.0)¶
Density of moist air with a given relative humidity, temperature, and pressure.
Uses the traditional formula from the ideal gas law (3.41)[Petty2006].
\[\begin{equation} \rho_a = \frac{P}{R_d T_v} \end{equation}\]where \(T_v = T(1 + 0.61w)\) and \(w\) is the water vapor mixing ratio.
- Parameters:
- Tfloat
ambient air temperature, K
- Pfloat
ambient air pressure, Pa
- RHfloat, optional (default=1.0)
relative humidity, decimal
- Returns:
- float
\(\rho_{a}\) in kg m**-3
References
[Petty2006]Petty, Grant Williams. A First Course in Atmospheric Radiation. Sundog Publishing, 2006. Print.