relative_humidity_from_mixing_ratio

metpy.calc.relative_humidity_from_mixing_ratio(mixing_ratio, temperature, pressure)

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

Parameters:

• mixing_ratio (pint.Quantity) – Dimensionless mass mixing ratio
• temperature (pint.Quantity) – Air temperature
• pressure (pint.Quantity) – Total atmospheric pressure

Returns:

pint.Quantity – Relative humidity

Notes

Formula from [Hobbs1977] pg. 74.

$$RH = 100 \frac{w}{w_s}$$

• $RH$ is relative humidity
• $w$ is mxing ratio
• $w_s$ is the saturation mixing ratio

See also

saturation_mixing_ratio()