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Workspace Method surface_complex_refr_indexFromGriddedField5

Description

Extracts complex refractive index from a field of such data.

The method allows to obtain surface_complex_refr_index by
interpolation of a geographical field of such data. The position
for which refraction shall be extracted is given by rtp_pos.
The refractive index field is expected to be stored as:
   GriddedField5:
      Vector f_grid[N_f]
      Vector T_grid[N_T]
      ArrayOfString Complex[2]
      Vector "Latitude"  [N_lat]
      Vector "Longitude" [N_lon]
      Tensor5 data[N_f][N_T][2][N_lat][N_lon]

Definition and treatment of the three first dimensions follows
complex_refr_index, e.g. the temperature grid is allowed
to have length 1. The grids for latitude and longitude must have
a length of >= 2 (ie. no automatic expansion).

Hence, this method performs an interpolation only in the lat and
lon dimensions, to a single point. The remaining GriddedField3 is
simply returned as surface_complex_refr_index.

Authors: Patrick Eriksson

Synopsis

surface_complex_refr_indexFromGriddedField5(

surface_complex_refr_index, atmosphere_dim, lat_grid, lat_true, lon_true, rtp_pos, complex_refr_index_field )

Variables

OUT	surface_complex_refr_index	(GriddedField3)	Complex refractive index of the surface, at a single point.
IN	atmosphere_dim	(Index)	The atmospheric dimensionality (1-3).
IN	lat_grid	(Vector)	The latitude grid.
IN	lat_true	(Vector)	Latitudinal geolocation for 1D and 2D data.
IN	lon_true	(Vector)	Longitudinal geolocation for 1D and 2D data.
IN	rtp_pos	(Vector)	Position of a radiative transfer point.
GIN	complex_refr_index_field	(GriddedField5)	A field of complex refractive index.