mixing_ratio_from_relative_humidity

metpy.calc.mixing_ratio_from_relative_humidity(pressure, temperature, relative_humidity)[source]

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)

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)

See also

relative_humidity_from_mixing_ratio, saturation_mixing_ratio

mixing_ratio mixing_ratio_from_specific_humidity