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Workspace Method iyInterpCloudboxField

Description

Interpolates the intensity field of the cloud box.

This is the standard method to put in iy_cloudbox_agenda if the
the scattering inside the cloud box is handled by the DOIT method.

The intensity field is interpolated to the position (specified by
*rte_gp_p/lat/lon*) and direction (specified by *scat_za/aa_grid*)
given. A linear interpolation is used for all dimensions.

The intensity field on the cloux box boundaries is provided by
*scat_i_p/lat/lon* and these variables are interpolated if the
given position is at any boundary.

Interpolation of the internal field is not yet possible.

Further, iy_aux is set to the transmission to the boundary of the
cloudbox. iy_error is so far set to a constant value of
[0.5 0.1 0.1 0.1] K (the RJBT for each Stokes element). These
values are valid at the cloudbox boundary, and weighted with the
transmission to the sensor. iy_error_type is set to 2.

Authors: Claudia Emde

Synopsis

iyInterpCloudboxField(

iy, iy_error, iy_error_type, iy_aux, diy_dx, iy_transmission, scat_i_p, scat_i_lat, scat_i_lon, doit_i_field1D_spectrum, rte_gp_p, rte_gp_lat, rte_gp_lon, rte_los, jacobian_do, cloudbox_on, cloudbox_limits, atmosphere_dim, stokes_dim, scat_za_grid, scat_aa_grid, f_grid )

Variables

OUT	iy	(Matrix)	Monochromatic pencil beam radiance spectrum.
OUT	iy_error	(Matrix)	Estimation of calculation errors in iy.
OUT	iy_error_type	(Index)	Characteristics of error values in iy_error.
OUT	iy_aux	(Matrix)	Data auxilary to iy.
OUT	diy_dx	(ArrayOfTensor3)	Derivative of iy with respect to retrieval quantities.
IN	iy_error	(Matrix)	Estimation of calculation errors in iy.
IN	iy_error_type	(Index)	Characteristics of error values in iy_error.
IN	iy_aux	(Matrix)	Data auxilary to iy.
IN	diy_dx	(ArrayOfTensor3)	Derivative of iy with respect to retrieval quantities.
IN	iy_transmission	(Tensor3)	Transmission to be included in iy.
IN	scat_i_p	(Tensor7)	Intensity field on cloudbox boundary (equal pressure slice).
IN	scat_i_lat	(Tensor7)	Intensity field on cloudbox boundary (constant latitude slice).
IN	scat_i_lon	(Tensor7)	Intensity field on cloudbox boundary (equal longitude slice).
IN	doit_i_field1D_spectrum	(Tensor4)	Radiation field for the whole frequency spectrum.
IN	rte_gp_p	(GridPos)	The pressure grid position of rte_pos.
IN	rte_gp_lat	(GridPos)	The latitude grid position of rte_pos.
IN	rte_gp_lon	(GridPos)	The longitude grid position of rte_pos.
IN	rte_los	(Vector)	A line-of-sight for radiative transfer calculations.
IN	jacobian_do	(Index)	Flag to activate jacobian calculations.
IN	cloudbox_on	(Index)	Flag to activate the cloud box.
IN	cloudbox_limits	(ArrayOfIndex)	The limits of the cloud box.
IN	atmosphere_dim	(Index)	The atmospheric dimensionality (1-3).
IN	stokes_dim	(Index)	The dimensionality of the Stokes vector (1-4).
IN	scat_za_grid	(Vector)	Zenith angle grid.
IN	scat_aa_grid	(Vector)	Azimuthal angle grid.
IN	f_grid	(Vector)	The frequency grid for monochromatic pencil beam calculations.