Variations
Often the more easily accessible atmospheric parameter is the mixing ratio . Through expansion upon the definition of vapor pressure in the law of partial pressures as presented above and the definition of mixing ratio:
which allows:
Algebraic expansion of that equation, ignoring higher orders of due to its typical order in Earth's atmosphere of, and substituting with its constant value yields the linear approximation:
An approximate conversion using in degrees Celsius and mixing ratio in g/kg is:
Read more about this topic: Virtual Temperature
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