geocat.comp.meteorology.relhum¶

geocat.comp.meteorology.relhum(temperature, mixing_ratio, pressure)¶

This function calculates the relative humidity given temperature, mixing ratio, and pressure.

“Improved Magnus’ Form Approx. of Saturation Vapor pressure” Oleg A. Alduchov and Robert E. Eskridge https://www.osti.gov/scitech/servlets/purl/548871/ https://doi.org/10.2172/548871

Parameters

temperature (numpy.ndarray, xarray.DataArray, list, or float) – Temperature in Kelvin
mixing_ratio (numpy.ndarray, xarray.DataArray, list, or float) – Mixing ratio in kg/kg. Must have the same dimensions as temperature
pressure (numpy.ndarray, xarray.DataArray, list, or float) – Pressure in Pa. Must have the same dimensions as temperature

Returns

relative_humidity – Relative humidity. Will have the same dimensions as temperature

Return type

numpy.ndarray or xarray.DataArray