Function metfor::specific_humidity

pub fn specific_humidity<DP, P>(dew_point: DP, pressure: P) -> Option<f64> where
    DP: Temperature,
    P: Pressure,
    Celsius: From<DP>,
    HectoPascal: From<P>, 

Calculate the specific humidity.

Eqs 5.11 and 5.12 from “Weather Analysis” by Dušan Dujrić

• dew_point - the dew point, if this is the same as the temperature then this calculates the saturation specific humidity.
• pressure - the pressure in hPa.

Returns the specific humidity. (no units)