vapor_pressure¶
- metpy.calc.vapor_pressure(pressure, mixing_ratio)¶
Calculate water vapor (partial) pressure.
Given total
pressure
and water vapormixing_ratio
, calculates the partial pressure of water vapor.- Parameters
pressure (
pint.Quantity
) – Total atmospheric pressuremixing_ratio (
pint.Quantity
) – Dimensionless mass mixing ratio
- Returns
pint.Quantity
– Ambient water vapor (partial) pressure in the same units aspressure
See also
Notes
This function is a straightforward implementation of the equation given in many places, such as [Hobbs1977] pg.71:
\[e = p \frac{r}{r + \epsilon}\]Changed in version 1.0: Renamed
mixing
parameter tomixing_ratio