eradiate.thermoprops.util.volume_mixing_ratio_at_surface# eradiate.thermoprops.util.volume_mixing_ratio_at_surface(ds, species)[source]# Compute the volume mixing ratio at the surface of a given species in an atmospheric profile. Parameters: ds (Dataset) – Atmosphere thermophysical properties data set. species (str) – Species. Returns: quantity – Volume mixing ratio at the surface.