mixing_ratio_from_relative_humidity#

metpy.calc.mixing_ratio_from_relative_humidity(pressure, temperature, relative_humidity)#

Calculate the mixing ratio from relative humidity, temperature, and pressure.

Parameters

  • pressure (pint.Quantity) – Total atmospheric pressure

  • temperature (pint.Quantity) – Air temperature

  • relative_humidity (array-like) – The relative humidity expressed as a unitless ratio in the range [0, 1]. Can also pass a percentage if proper units are attached.

Returns

pint.Quantity – Mixing ratio (dimensionless)

Examples

>>> from metpy.calc import mixing_ratio_from_relative_humidity
>>> from metpy.units import units
>>> p = 1000. * units.hPa
>>> T = 28.1 * units.degC
>>> rh = .65
>>> mixing_ratio_from_relative_humidity(p, T, rh).to('g/kg')
<Quantity(15.9828362, 'gram / kilogram')>

See also

relative_humidity_from_mixing_ratio, saturation_mixing_ratio

Notes

Formula adapted from [Hobbs1977] pg. 74.

\[w = (rh)(w_s)\]

  • \(w\) is mixing ratio

  • \(rh\) is relative humidity as a unitless ratio

  • \(w_s\) is the saturation mixing ratio

Changed in version 1.0: Changed signature from (relative_humidity, temperature, pressure)

Examples using metpy.calc.mixing_ratio_from_relative_humidity#

Hydrostatic Thickness

Hydrostatic Thickness

Hydrostatic Thickness

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