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Workspace Method iyFOS

Description

Method in development. Don't use without contacting Patrick.

Regarding radiance unit, works exactly as iyEmissionStandard.

The *fos_n* argument determines the maximum scattering order that
will be considered. For example, 1 corresponds to that only single
scattering is considered. The value 0 is accepted and results
in calculations of clear-sky type. In the later case, particle
absorption/emission is considered if cloudbox is active. If
cloudbox is not active,clear-sky results are returned for all
values of *fos_n*.

The following auxiliary data can be obtained:
  "Pressure": The pressure along the propagation path.
     Size: [1,1,1,np].
  "Temperature": The temperature along the propagation path.
     Size: [1,1,1,np].
  "VMR, species X": VMR of the species with index X (zero based).
     For example, adding the string "VMR, species 0" extracts the
     VMR of the first species. Size: [1,1,1,np].
  "Absorption, summed": The total absorption matrix along the
     path. Size: [nf,ns,ns,np].
  "Absorption, species X": The absorption matrix along the path
     for an individual species (X works as for VMR).
     Size: [nf,ns,ns,np].
  "PND, type X": The particle number density for particle type X
       (ie. corresponds to book X in pnd_field). Size: [1,1,1,np].
  "Mass content, X": The particle content for mass category X.
       This corresponds to column X in particle_masses (zero-
       based indexing). Size: [1,1,1,np].
* "Radiative background": Index value flagging the radiative
     background. The following coding is used: 0=space and
     and 1=surface. Size: [nf,1,1,1].
  "iy": The radiance at each point along the path (iy_unit is.
     considered). Size: [nf,ns,1,np].
* "Optical depth": The scalar optical depth between the
     observation point and the end of the primary propagation path
     (ie. the optical depth to the surface or space.). Calculated
     in a pure scalar manner, and not dependent on direction.
     Size: [nf,1,1,1].
where
  nf: Number of frequencies.
  ns: Number of Stokes elements.
  np: Number of propagation path points.

The auxiliary data are returned in iy_aux with quantities
selected by iy_aux_vars. Most variables require that the method
is called directly or by iyCalc. For calculations using yCalc,
the selection is restricted to the variables marked with *.

Authors: Patrick Eriksson

Synopsis

Variables