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Workspace Method iyTransmissionStandard


Standard method for handling transmission measurements.

Designed to be part of iy_main_agenda. Treatment of the cloudbox
is incorporated (that is, no need to define iy_cloudbox_agenda).

The transmitter is assumed to be placed at the end of provided ppath.
The transmitted signal is taken from iy_transmitter. This
signal is propagated along the path, considering attenuation alone.
That is, the result of the method (iy) is the output of
iy_transmitter multiplied with the transmittance along the
propagation path.

As mentioned, the given ppath determines the position of the
transmitter. For clear-sky and no modification of ppath, this
means that the transitter will either be found at the surface or
at the top-of-the-atmosphere. If you want to maintain this even with
an active cloudbox, calculate ppath as
     ppathCalc( cloudbox_on=0 )
Without setting cloudbox_on=0, the transmitter will end up inside or
at the boundary of the cloudbox.

Some auxiliary radiative transfer quantities can be obtained. Auxiliary
quantities are selected by iy_aux_vars and returned by iy_aux.
Valid choices for auxiliary data are:
 "Radiative background": Index value flagging the radiative
    background. The following coding is used: 0=space, 1=surface
    and 2=cloudbox. The value is added to each column.
 "Optical depth": Scalar optical depth between the observation point
    and the end of the present propagation path. Calculated based on
    the (1,1)-element of the transmittance matrix (1-based indexing),
    i.e. only fully valid for scalar RT. The value is added to each

IMPORTANT: No jacobian calculation is supported when gas scattering is
 included! This will be implemented in a future version.

Authors: Patrick Eriksson, Richard Larsson


iyTransmissionStandard( iy, iy_aux, diy_dx, ppvar_p, ppvar_t, ppvar_nlte, ppvar_vmr, ppvar_wind, ppvar_mag, ppvar_pnd, ppvar_f, ppvar_iy, ppvar_trans_cumulat, ppvar_trans_partial, stokes_dim, f_grid, atmosphere_dim, p_grid, t_field, nlte_field, vmr_field, abs_species, wind_u_field, wind_v_field, wind_w_field, mag_u_field, mag_v_field, mag_w_field, cloudbox_on, cloudbox_limits, gas_scattering_do, pnd_field, dpnd_field_dx, scat_species, scat_data, iy_aux_vars, jacobian_do, jacobian_quantities, ppath, iy_transmitter, propmat_clearsky_agenda, water_p_eq_agenda, gas_scattering_agenda, iy_agenda_call1, iy_transmittance, rte_alonglos_v )


OUTiy(Matrix)Monochromatic pencil beam radiance spectrum.
OUTiy_aux(ArrayOfMatrix)Data auxiliary to iy.
OUT+INdiy_dx(ArrayOfTensor3)Derivative of iy with respect to retrieval quantities.
OUTppvar_p(Vector)Pressure along the propagation path.
OUTppvar_t(Vector)Temperature along the propagation path.
OUTppvar_nlte(EnergyLevelMap)Non-LTE temperatures/ratios along the propagation path.
OUTppvar_vmr(Matrix)VMR values along the propagation path.
OUTppvar_wind(Matrix)Winds along the propagation path.
OUTppvar_mag(Matrix)Magnetic field along the propagation path.
OUTppvar_pnd(Matrix)PND values along the propagation path.
OUTppvar_f(Matrix)Doppler adjusted frequencies along the propagation path.
OUTppvar_iy(Tensor3)iy-values along the propagation path.
OUTppvar_trans_cumulat(Tensor4)The transmittance between the sensor and each point of the propagation path.
OUTppvar_trans_partial(Tensor4)The transmittance between the points along the propagation path.
INstokes_dim(Index)The dimensionality of the Stokes vector (1-4).
INf_grid(Vector)The frequency grid for monochromatic pencil beam calculations.
INatmosphere_dim(Index)The atmospheric dimensionality (1-3).
INp_grid(Vector)The pressure grid.
INt_field(Tensor3)The field of atmospheric temperatures.
INnlte_field(EnergyLevelMap)The field of NLTE temperatures and/or ratios.
INvmr_field(Tensor4)VMR field.
INabs_species(ArrayOfArrayOfSpeciesTag)Tag groups for gas absorption.
INwind_u_field(Tensor3)Zonal component of the wind field.
INwind_v_field(Tensor3)Meridional component of the magnetic field.
INwind_w_field(Tensor3)Vertical wind component field.
INmag_u_field(Tensor3)Zonal component of the magnetic field.
INmag_v_field(Tensor3)Meridional component of the magnetic field.
INmag_w_field(Tensor3)Vertical component of the magnetic field.
INcloudbox_on(Index)Flag to activate the cloud box.
INcloudbox_limits(ArrayOfIndex)The limits of the cloud box.
INgas_scattering_do(Index)Flag to activate gas scattering.
INpnd_field(Tensor4)Particle number density field.
INdpnd_field_dx(ArrayOfTensor4)Partial derivatives of pnd_field.
INscat_species(ArrayOfString)Array of Strings defining the scattering species to consider.
INscat_data(ArrayOfArrayOfSingleScatteringData)Array of single scattering data.
INiy_aux_vars(ArrayOfString)Selection of quantities for iy_aux and when applicable also y_aux.
INjacobian_do(Index)Flag to activate (clear-sky) Jacobian calculations.
INjacobian_quantities(ArrayOfRetrievalQuantity)The retrieval quantities in the Jacobian matrix.
INppath(Ppath)The propagation path for one line-of-sight.
INiy_transmitter(Matrix)Monochromatic pencil beam radiance spectrum of transmitter signal.
INpropmat_clearsky_agenda(Agenda)Agenda calculating the absorption coefficient matrices.
INwater_p_eq_agenda(Agenda)Agenda to calculate the saturation pressure of water.
INgas_scattering_agenda(Agenda)Agenda calculating gas scattering extinction and phase matrix.
INiy_agenda_call1(Index)Flag to handle recursive calls of iy_main_agenda The agenda iy_main_agenda can be used recursively and this flag is used to tell the methods inside the agenda which is the primary call.
INiy_transmittance(Tensor3)Transmittance to be included in iy.
INrte_alonglos_v(Numeric)Velocity along the line-of-sight to consider for a RT calculation.