pyrcel.thermo.es¶
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pyrcel.thermo.
es
(T_c)¶ Calculates the saturation vapor pressure over water for a given temperature.
Uses an empirical fit [Bolton1980], which is accurate to \(0.1\%\) over the temperature range \(-30^oC \leq T \leq 35^oC\),
\[\begin{equation} e_s(T) = 611.2 \exp\left(\frac{17.67T}{T + 243.5}\right) \tag{RY1989, 2.17} \end{equation}\]where \(e_s\) is in Pa and \(T\) is in degrees C.
Parameters: T_c : float
ambient air temperature, degrees C
Returns: float
\(e_s(T)\) in Pa
References
[Bolton1980] Bolton, David. “The Computation of Equivalent Potential Temperature”. Monthly Weather Review 108.8 (1980): 1046-1053 [RY1989] Rogers, R. R., and M. K. Yau. A Short Course in Cloud Physics. Burlington, MA: Butterworth Heinemann, 1989.