earthkit.meteo.thermo.array.specific_humidity_from_relative_humidity¶
- earthkit.meteo.thermo.array.specific_humidity_from_relative_humidity(t, r, p)¶
Compute the specific humidity from relative_humidity.
- Parameters:
t (
array-like) – Temperature (K)r (
array-like) – Relative humidity(%)p (
array-like) – Pressure (Pa)
- Returns:
Specific humidity (kg/kg) units
- Return type:
array-like
The computation starts with determining the the vapour pressure:
\[e(q, p) = r \frac{e_{msat}(t)}{100}\]where:
\(e\) is the vapour pressure (see
vapour_pressure())\(e_{msat}\) is the
saturation_vapour_pressure()based on the “mixed” phase\(q\) is the specific humidity
Then \(q\) is computed from \(e\) using
specific_humidity_from_vapour_pressure().