pyrcel.thermo.rho_air¶
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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: T : float
ambient air temperature, K
P : float
ambient air pressure, Pa
RH : float, 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.