mixing_ratio_from_specific_humidity

metpy.calc.mixing_ratio_from_specific_humidity(specific_humidity)

Calculate the mixing ratio from specific humidity.

Parameters

specific_humidity (pint.Quantity) – Specific humidity of air

Returns

pint.Quantity – Mixing ratio

Examples

>>> from metpy.calc import mixing_ratio_from_specific_humidity
>>> from metpy.units import units
>>> sh = [4.77, 12.14, 6.16, 15.29, 12.25] * units('g/kg')
>>> mixing_ratio_from_specific_humidity(sh).to('g/kg')
<Quantity([ 4.79286195 12.28919078  6.19818079 15.52741416 12.40192356],
'gram / kilogram')>

See also

mixing_ratio, specific_humidity_from_mixing_ratio

Notes

Formula from [Salby1996] pg. 118.

\[w = \frac{q}{1-q}\]

• \(w\) is mixing ratio

• \(q\) is the specific humidity

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