vapor_pressure#

metpy.calc.vapor_pressure(pressure, mixing_ratio)#

Calculate water vapor (partial) pressure.

Given total pressure and water vapor mixing_ratio, calculates the partial pressure of water vapor.

Parameters
Returns

pint.Quantity – Ambient water vapor (partial) pressure in the same units as pressure

See also

saturation_vapor_pressure, dewpoint

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 to mixing_ratio

Examples using metpy.calc.vapor_pressure#

Dewpoint and Mixing Ratio

Dewpoint and Mixing Ratio#

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