geocat.comp.meteorology.relhum_water

geocat.comp.meteorology.relhum_water(temperature, mixing_ratio, pressure)

Calculates relative humidity with respect to water, given temperature, mixing ratio, and pressure.

Definition of mixing ratio if:

• es - is the saturation mixing ratio

• ep - is the ratio of the molecular weights of water vapor to dry air

• p - is the atmospheric pressure

• rh - is the relative humidity (given as a percent)

\[rh = 100 q / ( (ep*es)/(p-es) )\]

Parameters:

• temperature (xarray.DataArray, numpy.ndarray, list, or float) – Temperature in Kelvin

• mixing_ratio (xarray.DataArray, numpy.ndarray, list, or float) – Mixing ratio in kg/kg. Must be same type and have the same dimensions as temperature

• pressure (xarray.DataArray, numpy.ndarray, list, or float) – Pressure in Pa. Must be same type and have the same dimensions as temperature

Returns:

relative_humidity (xarray.DataArray, numpy.ndarray, list, or float) – Relative humidity. Will have the same dimensions as temperature

See also

Related GeoCAT Functions: relhum() _xrelhum() relhum_ice() relhum_water()

Related NCL Functions: relhum, relhum_ttd, relhum_ice, relhum_water