pyrcel.thermo.es

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_cfloat

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.