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Workspace Method refr_indexThayer

Description

Calculates the microwave refractive index due to gases in the
Earth's atmosphere.

The refractivity of dry air and water vapour is summed. All
other gases are assumed to have a negligible contribution. 

The parameterisation of Thayer (Radio Science, 9, 803-807, 1974)
is used. See also Eq. 3 and 5 of Solheim et al. (JGR, 104,
pp. 9664).

Authors: Patrick Eriksson

Synopsis

refr_indexThayer( refr_index, rte_pressure, rte_temperature, rte_vmr_list, abs_species )

Variables

OUTrefr_index(Numeric)Refractive index of air (only real part).
INrte_pressure(Numeric)A pressure for radiative transfer calculations.
INrte_temperature(Numeric)A temperature for radiative transfer calculations.
INrte_vmr_list(Vector)A list of VMR values for radiative transfer calculations.
INabs_species(ArrayOfArrayOfSpeciesTag)Tag groups for scalar gas absorption.