pvdeg.humidity.relative

pvdeg.humidity.relative(temperature_air, dew_point)

Calculate ambient relative humidity from dry bulb air temperature and dew point.

References

Alduchov, O. A., and R. E. Eskridge, 1996: Improved Magnus’ form approximation of saturation vapor pressure. J. Appl. Meteor., 35, 601-609. August, E. F., 1828: Ueber die Berechnung der Expansivkraft des Wasserdunstes. Ann. Phys. Chem., 13, 122-137. Magnus, G., 1844: Versuche über die Spannkräfte des Wasserdampfs. Ann. Phys. Chem., 61, 225-247.

Parameters:

• temperature_air (pd.Series or float) – Series or float of ambient air temperature. [°C]

• dew_point (pd.Series or float) – Series or float of dew point temperature. [°C]

Notes

Passing NaN values in either temperature_air or dew_point at any index position will return NaN values in the output at those same position(s) in relative_humidity.

Returns:

relative_humidity (pd.Series or float) – Series or float of ambient relative humidity. [%]