Methods related to absorption, lookup table, etc. More...

#include <algorithm>
#include <map>
#include <limits>
#include "auto_md.h"
#include "arts.h"
#include "messages.h"
#include "gas_abs_lookup.h"
#include "agenda_class.h"
#include "check_input.h"
#include "matpackV.h"
#include "physics_funcs.h"
#include "math_funcs.h"
#include "make_vector.h"
#include "arts_omp.h"
#include "interpolation_poly.h"
#include "rng.h"

Functions
void	abs_lookupInit (GasAbsLookup &, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_lookupInit. More...

void	abs_lookupCreate (GasAbsLookup &abs_lookup, Index &abs_lookup_is_adapted, const ArrayOfArrayOfSpeciesTag &abs_species, const ArrayOfArrayOfLineRecord &abs_lines_per_species, const ArrayOfLineshapeSpec &abs_lineshape, const ArrayOfArrayOfSpeciesTag &abs_nls, const Vector &f_grid, const Vector &abs_p, const Matrix &abs_vmrs, const Vector &abs_t, const Vector &abs_t_pert, const Vector &abs_nls_pert, const Vector &abs_n2, const ArrayOfString &abs_cont_names, const ArrayOfString &abs_cont_models, const ArrayOfVector &abs_cont_parameters, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_lookupCreate. More...

void	find_nonlinear_continua (ArrayOfIndex &cont, const ArrayOfArrayOfSpeciesTag &abs_species, const Verbosity &verbosity)
	Find continuum species in abs_species. More...

void	choose_abs_nls (ArrayOfArrayOfSpeciesTag &abs_nls, const ArrayOfArrayOfSpeciesTag &abs_species, const Verbosity &verbosity)
	Choose species for abs_nls. More...

void	choose_abs_t_pert (Vector &abs_t_pert, ConstVectorView abs_t, ConstVectorView tmin, ConstVectorView tmax, const Numeric &step, const Index &p_interp_order, const Index &t_interp_order, const Verbosity &verbosity)
	Chose the temperature perturbations abs_t_pert. More...

void	choose_abs_nls_pert (Vector &abs_nls_pert, ConstVectorView refprof, ConstVectorView minprof, ConstVectorView maxprof, const Numeric &step, const Index &p_interp_order, const Index &nls_interp_order, const Verbosity &verbosity)
	Chose the H2O perturbations abs_nls_pert. More...

void	abs_lookupSetup (Vector &abs_p, Vector &abs_t, Vector &abs_t_pert, Matrix &abs_vmrs, ArrayOfArrayOfSpeciesTag &abs_nls, Vector &abs_nls_pert, const Index &atmosphere_dim, const Vector &p_grid, const Vector &lat_grid, const Vector &lon_grid, const Tensor3 &t_field, const Tensor4 &vmr_field, const ArrayOfArrayOfSpeciesTag &abs_species, const Index &abs_p_interp_order, const Index &abs_t_interp_order, const Index &abs_nls_interp_order, const Numeric &p_step10, const Numeric &t_step, const Numeric &h2o_step, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_lookupSetup. More...

void	abs_lookupSetupBatch (Vector &abs_p, Vector &abs_t, Vector &abs_t_pert, Matrix &abs_vmrs, ArrayOfArrayOfSpeciesTag &abs_nls, Vector &abs_nls_pert, const ArrayOfArrayOfSpeciesTag &abs_species, const ArrayOfGriddedField4 &batch_fields, const Index &abs_p_interp_order, const Index &abs_t_interp_order, const Index &abs_nls_interp_order, const Numeric &p_step10, const Numeric &t_step, const Numeric &h2o_step, const Vector &extremes, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_lookupSetupBatch. More...

void	abs_lookupSetupWide (Vector &abs_p, Vector &abs_t, Vector &abs_t_pert, Matrix &abs_vmrs, ArrayOfArrayOfSpeciesTag &abs_nls, Vector &abs_nls_pert, const ArrayOfArrayOfSpeciesTag &abs_species, const Index &abs_p_interp_order, const Index &abs_t_interp_order, const Index &abs_nls_interp_order, const Numeric &p_min, const Numeric &p_max, const Numeric &p_step10, const Numeric &t_min, const Numeric &t_max, const Numeric &h2o_min, const Numeric &h2o_max, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_lookupSetupWide. More...

void	abs_speciesAdd (ArrayOfArrayOfSpeciesTag &abs_species, const ArrayOfString &names, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_speciesAdd. More...

void	abs_speciesAdd2 (Workspace &ws, ArrayOfArrayOfSpeciesTag &abs_species, ArrayOfRetrievalQuantity &jq, Agenda &jacobian_agenda, const Index &atmosphere_dim, const Vector &p_grid, const Vector &lat_grid, const Vector &lon_grid, const Vector &rq_p_grid, const Vector &rq_lat_grid, const Vector &rq_lon_grid, const String &species, const String &method, const String &mode, const Numeric &dx, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_speciesAdd2. More...

void	abs_speciesInit (ArrayOfArrayOfSpeciesTag &abs_species, const Verbosity &)
	WORKSPACE METHOD: abs_speciesInit. More...

void	SpeciesSet (ArrayOfArrayOfSpeciesTag &abs_species, const ArrayOfString &names, const Verbosity &verbosity)
	WORKSPACE METHOD: SpeciesSet. More...

void	abs_lookupAdapt (GasAbsLookup &abs_lookup, Index &abs_lookup_is_adapted, const ArrayOfArrayOfSpeciesTag &abs_species, const Vector &f_grid, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_lookupAdapt. More...

void	abs_scalar_gasExtractFromLookup (Matrix &abs_scalar_gas, const GasAbsLookup &abs_lookup, const Index &abs_lookup_is_adapted, const Index &abs_p_interp_order, const Index &abs_t_interp_order, const Index &abs_nls_interp_order, const Index &f_index, const Numeric &a_pressure, const Numeric &a_temperature, const Vector &a_vmr_list, const Numeric &a_doppler, const Numeric &extpolfac, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_scalar_gasExtractFromLookup. More...

void	abs_fieldCalc (Workspace &ws, Tensor5 &asg_field, const Agenda &sga_agenda, const Index &f_index, const Vector &f_grid, const Index &atmosphere_dim, const Vector &p_grid, const Vector &lat_grid, const Vector &lon_grid, const Tensor3 &t_field, const Tensor4 &vmr_field, const Vector &doppler, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_fieldCalc. More...

void	f_gridFromGasAbsLookup (Vector &f_grid, const GasAbsLookup &abs_lookup, const Verbosity &)
	WORKSPACE METHOD: f_gridFromGasAbsLookup. More...

void	p_gridFromGasAbsLookup (Vector &p_grid, const GasAbsLookup &abs_lookup, const Verbosity &)
	WORKSPACE METHOD: p_gridFromGasAbsLookup. More...

Numeric	calc_lookup_error (const GasAbsLookup &al, const Index &abs_p_interp_order, const Index &abs_t_interp_order, const Index &abs_nls_interp_order, const bool ignore_errors, const Vector &abs_n2, const ArrayOfArrayOfLineRecord &abs_lines_per_species, const ArrayOfLineshapeSpec &abs_lineshape, const ArrayOfString &abs_cont_names, const ArrayOfString &abs_cont_models, const ArrayOfVector &abs_cont_parameters, const Numeric &local_p, const Numeric &local_t, const Vector &local_vmrs, const Verbosity &verbosity)
	Compare lookup and LBL calculation. More...

void	abs_lookupTestAccuracy (const GasAbsLookup &abs_lookup, const Index &abs_lookup_is_adapted, const Index &abs_p_interp_order, const Index &abs_t_interp_order, const Index &abs_nls_interp_order, const Vector &abs_n2, const ArrayOfArrayOfLineRecord &abs_lines_per_species, const ArrayOfLineshapeSpec &abs_lineshape, const ArrayOfString &abs_cont_names, const ArrayOfString &abs_cont_models, const ArrayOfVector &abs_cont_parameters, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_lookupTestAccuracy. More...

void	abs_lookupTestAccMC (const GasAbsLookup &abs_lookup, const Index &abs_lookup_is_adapted, const Index &abs_p_interp_order, const Index &abs_t_interp_order, const Index &abs_nls_interp_order, const Vector &abs_n2, const ArrayOfArrayOfLineRecord &abs_lines_per_species, const ArrayOfLineshapeSpec &abs_lineshape, const ArrayOfString &abs_cont_names, const ArrayOfString &abs_cont_models, const ArrayOfVector &abs_cont_parameters, const Index &mc_seed, const Verbosity &verbosity)
	WORKSPACE METHOD: abs_lookupTestAccMC. More...

Variables
const Index	GFIELD4_FIELD_NAMES

const Index	GFIELD4_P_GRID

Detailed Description

Methods related to absorption, lookup table, etc.

Author: Stefan Buehler sbueh.nosp@m.ler@.nosp@m.ltu.s.nosp@m.e

Date: Wed Nov 20 18:04:20 2002

Definition in file m_abs_lookup.cc.

Function Documentation

◆ abs_fieldCalc()

void abs_fieldCalc	(	Workspace &	ws,
		Tensor5 &	abs_field,
		const Agenda &	abs_scalar_gas_agenda,
		const Index &	f_index,
		const Vector &	f_grid,
		const Index &	atmosphere_dim,
		const Vector &	p_grid,
		const Vector &	lat_grid,
		const Vector &	lon_grid,
		const Tensor3 &	t_field,
		const Tensor4 &	vmr_field,
		const Vector &	doppler,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_fieldCalc.

Calculate scalar gas absorption for all points in the atmosphere.

This is useful in two different contexts:

For testing and plotting gas absorption. (For RT calculations, gas absorption is calculated or extracted locally, therefore there is no need to calculate a global field. But this method is handy for easy plotting of absorption vs. pressure, for example.)
Inside the scattering region, monochromatic absorption is pre-calculated for the entire atmospheric field.

Because of the different contexts, the method can calculate absorption either for all frequencies in the frequency grid (f_index<0), or just for the frequency indicated by f_index (f_index>=0).

The calculation itself is performed by the abs_scalar_gas_agenda*.

Author: Stefan Buehler

Parameters

[in,out]	ws	Workspace
[out]	abs_field	WS Output
[in]	abs_scalar_gas_agenda	WS Input
[in]	f_index	WS Input
[in]	f_grid	WS Input
[in]	atmosphere_dim	WS Input
[in]	p_grid	WS Input
[in]	lat_grid	WS Input
[in]	lon_grid	WS Input
[in]	t_field	WS Input
[in]	vmr_field	WS Input
[in]	doppler	Generic Input (Default: "[]")

Definition at line 2102 of file m_abs_lookup.cc.

References abs_scalar_gas_agendaExecute(), chk_atm_field(), chk_atm_grids(), CREATE_OUT0, CREATE_OUT2, CREATE_OUT3, exit_or_rethrow(), joker, max, ConstTensor4View::nbooks(), ConstVectorView::nelem(), Tensor5::resize(), and transpose().

Referenced by abs_fieldCalc_g().

◆ abs_lookupAdapt()

void abs_lookupAdapt	(	GasAbsLookup &	abs_lookup,
		Index &	abs_lookup_is_adapted,
		const ArrayOfArrayOfSpeciesTag &	abs_species,
		const Vector &	f_grid,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_lookupAdapt.

Adapts a gas absorption lookup table to the current calculation.

The lookup table can contain more species and more frequencies than are needed for the current calculation. This method cuts down the table in memory, so that it contains just what is needed. Also, the species in the table are brought in the same order as the species in the current calculation.

Of course, the method also performs quite a lot of checks on the table. If something is not ok, a runtime error is thrown.

The method sets a flag abs_lookup_is_adapted to indicate that the table has been checked and that it is ok. Never set this by hand, always use this method to set it!

Author: Stefan Buehler

Parameters

[out]	abs_lookup	WS Output
[out]	abs_lookup_is_adapted	WS Output
[in]	abs_species	WS Input
[in]	f_grid	WS Input

Definition at line 1979 of file m_abs_lookup.cc.

References GasAbsLookup::Adapt().

Referenced by abs_lookupAdapt_g().

◆ abs_lookupCreate()

void abs_lookupCreate	(	GasAbsLookup &	abs_lookup,
		Index &	abs_lookup_is_adapted,
		const ArrayOfArrayOfSpeciesTag &	abs_species,
		const ArrayOfArrayOfLineRecord &	abs_lines_per_species,
		const ArrayOfLineshapeSpec &	abs_lineshape,
		const ArrayOfArrayOfSpeciesTag &	abs_nls,
		const Vector &	f_grid,
		const Vector &	abs_p,
		const Matrix &	abs_vmrs,
		const Vector &	abs_t,
		const Vector &	abs_t_pert,
		const Vector &	abs_nls_pert,
		const Vector &	abs_n2,
		const ArrayOfString &	abs_cont_names,
		const ArrayOfString &	abs_cont_models,
		const ArrayOfVector &	abs_cont_parameters,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_lookupCreate.

Creates a gas absorption lookup table.

The lookup table stores absorption cross-sections as a function of pressure. Additionally, absorption can be stored as a function of temperature for temperature perturbations from a reference profile.

Additionally, absorption can be stored as a function of water vapor VMR perturbations from a reference profile. The variable abs_nls specifies, for which species water vapor perturbations should be generated.

Note, that the absorbing gas can be any gas, but the perturbing gas is always H2O.

In contrast to other absorption functions, this method does not use the input variable abs_h2o. This is because abs_h2o has to be set interally to allow perturbations. If there are more than one H2O species, the first is assumed to be the main one.

Author: Stefan Buehler

Parameters

[out]	abs_lookup	WS Output
[out]	abs_lookup_is_adapted	WS Output
[in]	abs_species	WS Input
[in]	abs_lines_per_species	WS Input
[in]	abs_lineshape	WS Input
[in]	abs_nls	WS Input
[in]	f_grid	WS Input
[in]	abs_p	WS Input
[in]	abs_vmrs	WS Input
[in]	abs_t	WS Input
[in]	abs_t_pert	WS Input
[in]	abs_nls_pert	WS Input
[in]	abs_n2	WS Input
[in]	abs_cont_names	WS Input
[in]	abs_cont_models	WS Input
[in]	abs_cont_parameters	WS Input

Definition at line 60 of file m_abs_lookup.cc.

References arts_omp_get_nested(), CREATE_OUT2, and CREATE_OUT3.

Referenced by abs_lookupCreate_g().

◆ abs_lookupInit()

void abs_lookupInit	(	GasAbsLookup &	abs_lookup,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_lookupInit.

Creates an empty gas absorption lookup table.

This is mainly there to help developers. For example, you can write the empty table to an XML file, to see the file format.

Author: Stefan Buehler

Parameters

[out] abs_lookup WS Output

Definition at line 49 of file m_abs_lookup.cc.

Referenced by abs_lookupInit_g().

◆ abs_lookupSetup()

void abs_lookupSetup	(	Vector &	abs_p,
		Vector &	abs_t,
		Vector &	abs_t_pert,
		Matrix &	abs_vmrs,
		ArrayOfArrayOfSpeciesTag &	abs_nls,
		Vector &	abs_nls_pert,
		const Index &	atmosphere_dim,
		const Vector &	p_grid,
		const Vector &	lat_grid,
		const Vector &	lon_grid,
		const Tensor3 &	t_field,
		const Tensor4 &	vmr_field,
		const ArrayOfArrayOfSpeciesTag &	abs_species,
		const Index &	abs_p_interp_order,
		const Index &	abs_t_interp_order,
		const Index &	abs_nls_interp_order,
		const Numeric &	p_step,
		const Numeric &	t_step,
		const Numeric &	h2o_step,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_lookupSetup.

Set up input parameters for abs_lookupCreate.

More information can be found in the documentation for method abs_lookupSetupBatch*

Max and min values of H2O and temperature are adjusted to allow for numerical perturbations in Jacobian calculation.

The input variables abs_nls_interp_order and abs_t_interp_order are used to make sure that there are enough points in abs_nls_pert and abs_t_pert for the chosen interpolation order.

◆ abs_lookupSetupBatch()

void abs_lookupSetupBatch	(	Vector &	abs_p,
		Vector &	abs_t,
		Vector &	abs_t_pert,
		Matrix &	abs_vmrs,
		ArrayOfArrayOfSpeciesTag &	abs_nls,
		Vector &	abs_nls_pert,
		const ArrayOfArrayOfSpeciesTag &	abs_species,
		const ArrayOfGriddedField4 &	batch_atm_fields_compact,
		const Index &	abs_p_interp_order,
		const Index &	abs_t_interp_order,
		const Index &	abs_nls_interp_order,
		const Numeric &	p_step,
		const Numeric &	t_step,
		const Numeric &	h2o_step,
		const Vector &	extremes,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_lookupSetupBatch.

Set up input parameters for abs_lookupCreate for batch calculations.

This method performs a similar task as abs_lookupSetup, with the difference, that the lookup table setup is not for a single atmospheric state, but for a whole batch of them, stored in batch_atm_fields_compact*.

The method checks abs_species to decide, which species depend on abs_h2o*, and hence require nonlinear treatment in the lookup table.

The method also checks which range of pressures, temperatures, and VMRs occurs, and sets abs_p, abs_t, abs_t_pert, and abs_vmrs accordingly.

If nonlinear species are present, abs_nls and abs_nls_pert are also generated.

Max and min values of H2O and temperature are adjusted to allow for numerical perturbations in Jacobian calculation.

The input variables abs_nls_interp_order and abs_t_interp_order are used to make sure that there are enough points in abs_nls_pert and abs_t_pert for the chosen interpolation order.

◆ abs_lookupSetupWide()

void abs_lookupSetupWide	(	Vector &	abs_p,
		Vector &	abs_t,
		Vector &	abs_t_pert,
		Matrix &	abs_vmrs,
		ArrayOfArrayOfSpeciesTag &	abs_nls,
		Vector &	abs_nls_pert,
		const ArrayOfArrayOfSpeciesTag &	abs_species,
		const Index &	abs_p_interp_order,
		const Index &	abs_t_interp_order,
		const Index &	abs_nls_interp_order,
		const Numeric &	p_min,
		const Numeric &	p_max,
		const Numeric &	p_step,
		const Numeric &	t_min,
		const Numeric &	t_max,
		const Numeric &	h2o_min,
		const Numeric &	h2o_max,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_lookupSetupWide.

Set up input parameters for abs_lookupCalc for a wide range of atmospheric conditions.

This method can be used to set up parameters for a lookup table that really covers all reasonable atmospheric conditions.

Reference profiles of T and H2O will be constant, so that the different dimensions in the lookup table are actually "orthogonal", unlike the traditional case where we have pressure dependent reference profiles. This makes the table numerically somewhat more robust then the traditional ones, and it makes it straightforward to calculate the accuracy for the different interpolations with abs_lookupTestAccuracy.

You can give min an max values for the atmospheric conditions. The default values are chosen such that they cover all Chevallier data set cases, and a bit more. The statistics of the Chevallier data are:

min(p) / max(p) [Pa]: 1 / 104960 min(T) / max(T) [K]: 158.21 / 320.39 min(H2O) / max(H2O) [VMR]: -5.52e-07 / 0.049

Author: Stefan Buehler

Parameters

[out]	abs_p	WS Output
[out]	abs_t	WS Output
[out]	abs_t_pert	WS Output
[out]	abs_vmrs	WS Output
[out]	abs_nls	WS Output
[out]	abs_nls_pert	WS Output
[in]	abs_species	WS Input
[in]	abs_p_interp_order	WS Input
[in]	abs_t_interp_order	WS Input
[in]	abs_nls_interp_order	WS Input
[in]	p_min	Generic Input (Default: "0.5")
[in]	p_max	Generic Input (Default: "110000")
[in]	p_step	Generic Input (Default: "0.05")
[in]	t_min	Generic Input (Default: "100")
[in]	t_max	Generic Input (Default: "400")
[in]	h2o_min	Generic Input (Default: "0")
[in]	h2o_max	Generic Input (Default: "0.05")

Definition at line 1690 of file m_abs_lookup.cc.

References choose_abs_nls(), choose_abs_nls_pert(), choose_abs_t_pert(), CREATE_OUT1, CREATE_OUT2, find_first_species_tg(), joker, Array< base >::nelem(), Vector::resize(), Matrix::resize(), species_index_from_species_name(), and transform().

Referenced by abs_lookupSetupWide_g().

◆ abs_lookupTestAccMC()

void abs_lookupTestAccMC	(	const GasAbsLookup &	abs_lookup,
		const Index &	abs_lookup_is_adapted,
		const Index &	abs_p_interp_order,
		const Index &	abs_t_interp_order,
		const Index &	abs_nls_interp_order,
		const Vector &	abs_n2,
		const ArrayOfArrayOfLineRecord &	abs_lines_per_species,
		const ArrayOfLineshapeSpec &	abs_lineshape,
		const ArrayOfString &	abs_cont_names,
		const ArrayOfString &	abs_cont_models,
		const ArrayOfVector &	abs_cont_parameters,
		const Index &	mc_seed,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_lookupTestAccMC.

Test accuracy of absorption lookup table with Monte Carlo Algorithm.

Explicitly compare absorption from the lookup table with line-by-line calculations for random conditions.

The quantities returned are the mean value and standard deviation of the absolute value of the relative error in percent. The relative error itself is computed for a large number of cases (pressure, temperature, and H2O VMR combinations). In the frequency dimension the maximum value is taken for each case.

Produces no workspace output, only output to the output streams.

Author: Stefan Buehler

Parameters

[in]	abs_lookup	WS Input
[in]	abs_lookup_is_adapted	WS Input
[in]	abs_p_interp_order	WS Input
[in]	abs_t_interp_order	WS Input
[in]	abs_nls_interp_order	WS Input
[in]	abs_n2	WS Input
[in]	abs_lines_per_species	WS Input
[in]	abs_lineshape	WS Input
[in]	abs_cont_names	WS Input
[in]	abs_cont_models	WS Input
[in]	abs_cont_parameters	WS Input
[in]	mc_seed	WS Input

Definition at line 2858 of file m_abs_lookup.cc.

References abs, calc_lookup_error(), CREATE_OUT2, CREATE_OUT3, Rng::draw(), find_first_species_tg(), gridpos_poly(), interp(), interpweights(), joker, mean(), N, Vector::resize(), Rng::seed(), and species_index_from_species_name().

Referenced by abs_lookupTestAccMC_g().

◆ abs_lookupTestAccuracy()

void abs_lookupTestAccuracy	(	const GasAbsLookup &	abs_lookup,
		const Index &	abs_lookup_is_adapted,
		const Index &	abs_p_interp_order,
		const Index &	abs_t_interp_order,
		const Index &	abs_nls_interp_order,
		const Vector &	abs_n2,
		const ArrayOfArrayOfLineRecord &	abs_lines_per_species,
		const ArrayOfLineshapeSpec &	abs_lineshape,
		const ArrayOfString &	abs_cont_names,
		const ArrayOfString &	abs_cont_models,
		const ArrayOfVector &	abs_cont_parameters,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_lookupTestAccuracy.

Test accuracy of absorption lookup table.

Explicitly compare absorption from the lookup table with line-by-line calculations for strategically selected conditions (in-between the lookup table grid points).

For error units see abs_lookupTestAccMC

Produces no workspace output, only output to the output streams.

Author: Stefan Buehler

Parameters

[in]	abs_lookup	WS Input
[in]	abs_lookup_is_adapted	WS Input
[in]	abs_p_interp_order	WS Input
[in]	abs_t_interp_order	WS Input
[in]	abs_nls_interp_order	WS Input
[in]	abs_n2	WS Input
[in]	abs_lines_per_species	WS Input
[in]	abs_lineshape	WS Input
[in]	abs_cont_names	WS Input
[in]	abs_cont_models	WS Input
[in]	abs_cont_parameters	WS Input

Definition at line 2472 of file m_abs_lookup.cc.

References calc_lookup_error(), CREATE_OUT2, find_first_species_tg(), joker, ConstVectorView::nelem(), and species_index_from_species_name().

Referenced by abs_lookupTestAccuracy_g().

◆ abs_scalar_gasExtractFromLookup()

void abs_scalar_gasExtractFromLookup	(	Matrix &	abs_scalar_gas,
		const GasAbsLookup &	abs_lookup,
		const Index &	abs_lookup_is_adapted,
		const Index &	abs_p_interp_order,
		const Index &	abs_t_interp_order,
		const Index &	abs_nls_interp_order,
		const Index &	f_index,
		const Numeric &	rte_pressure,
		const Numeric &	rte_temperature,
		const Vector &	rte_vmr_list,
		const Numeric &	rte_doppler,
		const Numeric &	extpolfac,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_scalar_gasExtractFromLookup.

Extract scalar gas absorption coefficients from lookup table.

This extracts the absorption coefficient for all species in the current calculation from the lookup table. Extraction is for one specific atmospheric condition, i.e., a set of pressure, temperature, VMR values, and Doppler shift.

Extraction can be either for a single frequency (f_index>=0), or for all frequencies (f_index<0). The dimension of the output abs_scalar_gas is adjusted accordingly.

The interpolation order in T and H2O is given by abs_t_interp_order and abs_nls_interp_order, respectively.

Note that the treatment of the Doppler-shift here is approximate, since there is a linear interpolation of absorption to a shifted frequency grid. Due to this, with Doppler shift there will be an extrapolation on one edge of the grid, where the spectrum is pushed out of the calculated range. Use extpolfac to control how much extrapolation to tolerate before throwing a runtime error. Default is to allow ten times the outermost grid distance.

◆ abs_speciesAdd()

void abs_speciesAdd	(	ArrayOfArrayOfSpeciesTag &	abs_species,
		const ArrayOfString &	species,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_speciesAdd.

Adds species tag groups to the list of absorption species.

This WSM is similar to SpeciesSet, the only difference is that this method appends species to an existing list of absorption species instead of creating the whole list.

See SpeciesSet for details on how tags are defined and examples of how to input them in the control file.

Author: Stefan Buehler

Parameters

[out]	abs_species	WS Output
[in]	species	Generic Input

Definition at line 1852 of file m_abs_lookup.cc.

References array_species_tag_from_string(), CREATE_OUT3, Array< base >::nelem(), and temp.

Referenced by abs_speciesAdd_g().

◆ abs_speciesAdd2()

void abs_speciesAdd2	(	Workspace &	ws,
		ArrayOfArrayOfSpeciesTag &	abs_species,
		ArrayOfRetrievalQuantity &	jacobian_quantities,
		Agenda &	jacobian_agenda,
		const Index &	atmosphere_dim,
		const Vector &	p_grid,
		const Vector &	lat_grid,
		const Vector &	lon_grid,
		const Vector &	gin1,
		const Vector &	gin2,
		const Vector &	gin3,
		const String &	species,
		const String &	method,
		const String &	unit,
		const Numeric &	dx,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_speciesAdd2.

Adds a species tag group to the list of absorption species and jacobian quantities.

The method is basically a combined call of abs_speciesAdd and jacobianAddAbsSpecies*. In this way it is not needed to specify a tag group in two different places.

Arguments exactly as for jacobianAddAbsSpecies. Note that this method only handles a single tag group, in contrast to abs_speciesAdd*

Author: Patrick Eriksson

Parameters

[in,out]	ws	Workspace
[out]	abs_species	WS Output
[out]	jacobian_quantities	WS Output
[out]	jacobian_agenda	WS Output
[in]	atmosphere_dim	WS Input
[in]	p_grid	WS Input
[in]	lat_grid	WS Input
[in]	lon_grid	WS Input
[in]	gin1	Generic Input
[in]	gin2	Generic Input
[in]	gin3	Generic Input
[in]	species	Generic Input
[in]	method	Generic Input
[in]	unit	Generic Input
[in]	dx	Generic Input

Definition at line 1889 of file m_abs_lookup.cc.

References array_species_tag_from_string(), CREATE_OUT3, dx, jacobianAddAbsSpecies(), and Array< base >::nelem().

Referenced by abs_speciesAdd2_g().

◆ abs_speciesInit()

void abs_speciesInit	(	ArrayOfArrayOfSpeciesTag &	abs_species,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: abs_speciesInit.

Sets abs_species to be empty.

Author: Stefan Buehler

Parameters

[out] abs_species WS Output

Definition at line 1935 of file m_abs_lookup.cc.

Referenced by abs_speciesInit_g().

◆ calc_lookup_error()

Numeric calc_lookup_error	(	const GasAbsLookup &	al,
		const Index &	abs_p_interp_order,
		const Index &	abs_t_interp_order,
		const Index &	abs_nls_interp_order,
		const bool	ignore_errors,
		const Vector &	abs_n2,
		const ArrayOfArrayOfLineRecord &	abs_lines_per_species,
		const ArrayOfLineshapeSpec &	abs_lineshape,
		const ArrayOfString &	abs_cont_names,
		const ArrayOfString &	abs_cont_models,
		const ArrayOfVector &	abs_cont_parameters,
		const Numeric &	local_p,
		const Numeric &	local_t,
		const Vector &	local_vmrs,
		const Verbosity &	verbosity
	)

Compare lookup and LBL calculation.

This is a helper function used by abs_lookupTestAccuracy. It takes local p, T, and VMR conditions, performs lookup table extraction and line by line absorption calculation, and compares the difference.

Parameters

al	Lookup table
abs_p_interp_order	Pressure interpolation order.
abs_t_interp_order	Temperature interpolation order.
abs_nls_interp_order	H2O interpolation order.
ignore_errors	If true, we ignore runtime errors in lookup table extraction. This is handy, because in some cases it is not easy to make sure that all local conditions are inside the valid range for the lookup table.
local_p
local_t
local_vmrs

Returns: The maximum of the absolute value of the relative difference between lookup and LBL, in percent. Or -1 if the case should be ignored according to the "ignore_errors" flag.

Definition at line 2358 of file m_abs_lookup.cc.

References abs_scalar_gasCalcLBL(), GasAbsLookup::Extract(), GasAbsLookup::f_grid, joker, max, ConstVectorView::nelem(), ConstMatrixView::nrows(), and GasAbsLookup::species.

Referenced by abs_lookupTestAccMC(), and abs_lookupTestAccuracy().

◆ choose_abs_nls()

void choose_abs_nls	(	ArrayOfArrayOfSpeciesTag &	abs_nls,
		const ArrayOfArrayOfSpeciesTag &	abs_species,
		const Verbosity &	verbosity
	)

Choose species for abs_nls.

Make an intelligent choice for abs_nls, based on abs_species.

Author: Stefan Buehler

Parameters

[out]	abs_nls	The list of nonlinear species.
[in]	abs_species	Absorption species.

Definition at line 607 of file m_abs_lookup.cc.

References CREATE_OUT2, find_next_species_tg(), find_nonlinear_continua(), Array< base >::nelem(), and species_index_from_species_name().

Referenced by abs_lookupSetup(), abs_lookupSetupBatch(), and abs_lookupSetupWide().

◆ choose_abs_nls_pert()

void choose_abs_nls_pert	(	Vector &	abs_nls_pert,
		ConstVectorView	refprof,
		ConstVectorView	minprof,
		ConstVectorView	maxprof,
		const Numeric &	step,
		const Index &	p_interp_order,
		const Index &	nls_interp_order,
		const Verbosity &	verbosity
	)

Chose the H2O perturbations abs_nls_pert.

This simple function creates a vector of fractional H2O VMR perturbations, relative to the reference H2O profile, that covers the minimum and maximum profile.

Author: Stefan Buehler

Parameters

[out]	abs_nls_pert	H2O VMR perturbations
[in]	refprof	Reference profile
[in]	minprof	Minimum profile
[in]	maxprof	Maximum profile
[in]	step	Fractional perturbation step

Definition at line 745 of file m_abs_lookup.cc.

References CREATE_OUT2, CREATE_OUT3, gridpos_poly(), GridPosPoly::idx, Array< base >::nelem(), ConstVectorView::nelem(), and VectorInsertGridPoints().

Referenced by abs_lookupSetup(), abs_lookupSetupBatch(), and abs_lookupSetupWide().

◆ choose_abs_t_pert()

void choose_abs_t_pert	(	Vector &	abs_t_pert,
		ConstVectorView	abs_t,
		ConstVectorView	tmin,
		ConstVectorView	tmax,
		const Numeric &	step,
		const Index &	p_interp_order,
		const Index &	t_interp_order,
		const Verbosity &	verbosity
	)

Chose the temperature perturbations abs_t_pert.

This simple function creates a vector of temperature perturbations, relative to the reference temperature profile, that covers the minimum and maximum temperature profile.

Author: Stefan Buehler

Parameters

[out]	abs_t_pert	Temperature perturbations
[in]	abs_t	Reference temperature profile
[in]	tmin	Minimum temperature profile
[in]	tmax	Maximum temperature profile
[in]	t_step	Temperature perturbation step

Definition at line 665 of file m_abs_lookup.cc.

References CREATE_OUT2, CREATE_OUT3, gridpos_poly(), GridPosPoly::idx, Array< base >::nelem(), and ConstVectorView::nelem().

Referenced by abs_lookupSetup(), abs_lookupSetupBatch(), and abs_lookupSetupWide().

◆ f_gridFromGasAbsLookup()

void f_gridFromGasAbsLookup	(	Vector &	f_grid,
		const GasAbsLookup &	abs_lookup,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: f_gridFromGasAbsLookup.

Sets f_grid to the frequency grid of abs_lookup.

Must be called between importing/creating raw absorption table and call of abs_lookupAdapt.

Author: Stefan Buehler

Parameters

[out]	f_grid	WS Output
[in]	abs_lookup	WS Input

Definition at line 2313 of file m_abs_lookup.cc.

References GasAbsLookup::GetFgrid(), ConstVectorView::nelem(), and Vector::resize().

Referenced by f_gridFromGasAbsLookup_g().

◆ find_nonlinear_continua()

void find_nonlinear_continua	(	ArrayOfIndex &	cont,
		const ArrayOfArrayOfSpeciesTag &	abs_species,
		const Verbosity &	verbosity
	)

Find continuum species in abs_species.

Returns an index array with indexes of those species in abs_species that have continuum tags that require h2o_abs, and hence require nonlinear treatment in the absorption lookup table.

H2O itself is ignored here since that is treated separately.

We are a bit conservative here, it is possible that some of the continua do not really require H2O. Check yourself, if you want, and improve the guessing here.

Return values

cont	indices of those species with continua.

Parameters

abs_species list of absorption species.

Author: Stefan Buehler

Date: 2007-11-16

Definition at line 519 of file m_abs_lookup.cc.

References CREATE_OUT3, Array< base >::nelem(), species_data, and species_index_from_species_name().

Referenced by choose_abs_nls().

◆ p_gridFromGasAbsLookup()

void p_gridFromGasAbsLookup	(	Vector &	p_grid,
		const GasAbsLookup &	abs_lookup,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: p_gridFromGasAbsLookup.

Sets p_grid to the frequency grid of abs_lookup.

Author: Patrick Eriksson

Parameters

[out]	p_grid	WS Output
[in]	abs_lookup	WS Input

Definition at line 2325 of file m_abs_lookup.cc.

References GasAbsLookup::GetPgrid(), ConstVectorView::nelem(), and Vector::resize().

Referenced by p_gridFromGasAbsLookup_g().

◆ SpeciesSet()

void SpeciesSet	(	ArrayOfArrayOfSpeciesTag &	gout1,
		const ArrayOfString &	species,
		const Verbosity &	verbosity
	)

WORKSPACE METHOD: SpeciesSet.

Set up a list of absorption species tag groups.

Workspace variables like abs_species contain several tag groups. Each tag group contains one or more tags. This method converts descriptions of tag groups given in the keyword to the ARTS internal representation (an ArrayOfArrayOfSpeciesTag). A tag group selects spectral features which belong to the same species.

A tag is defined in terms of the name of the species, isotope, and a range of frequencies. Species are named after the standard chemical names, e.g., "O3". Isotopes are given by the last digit of the atomic weight, i.g., "O3-668" for the asymmetric ozone molecule including an oxygen 18 atom. Groups of transitions are specified by giving a lower and upper limit of a frequency range, e.g., "O3-666-500e9-501e9".

The symbol "*" acts as a wild card. Furthermore, frequency range or frequency range and isotope may be omitted.

Finally, instead of the isotope the special letter "nl" may be given, e.g., "H2O-nl". This means that no absorption at all is associated with this tag. (It is not quite clear if this feature is useful for anything right now.)

This method used to be a specific method for abs_species. Now it is generic, so that it can also be used to set abs_nls and abs_pts.

Example:

species = [ "O3-666-500e9-501e9, O3-686", "O3", "H2O-PWR98" ]

The first tag group selects all O3-666 lines between 500 and 501 GHz plus all O3-686 lines.

The second tag group selects all remaining O3 transitions.

The third tag group selects H2O, with one of the complete absorption models (Rosenkranz 98). No spectrocopic line catalogue data will be used for that third tag group.

Author: Stefan Buehler

Parameters

[out]	gout1	Generic output
[in]	species	Generic Input

Definition at line 1943 of file m_abs_lookup.cc.

References array_species_tag_from_string(), CREATE_OUT3, and Array< base >::nelem().

Referenced by get_tagindex_for_Strings(), and SpeciesSet_g().

Variable Documentation

◆ GFIELD4_FIELD_NAMES

const Index GFIELD4_FIELD_NAMES

extern

Referenced by abs_lookupSetupBatch().

◆ GFIELD4_P_GRID

const Index GFIELD4_P_GRID

extern

Referenced by abs_lookupSetupBatch().

[out]	abs_scalar_gas	WS Output
[in]	abs_lookup	WS Input
[in]	abs_lookup_is_adapted	WS Input
[in]	abs_p_interp_order	WS Input
[in]	abs_t_interp_order	WS Input
[in]	abs_nls_interp_order	WS Input
[in]	f_index	WS Input
[in]	rte_pressure	WS Input
[in]	rte_temperature	WS Input
[in]	rte_vmr_list	WS Input
[in]	rte_doppler	WS Input
[in]	extpolfac	Generic Input (Default: "10")

Functions

Variables

Detailed Description

Function Documentation

◆ abs_fieldCalc()

◆ abs_lookupAdapt()

◆ abs_lookupCreate()

◆ abs_lookupInit()

◆ abs_lookupSetup()

◆ abs_lookupSetupBatch()

◆ abs_lookupSetupWide()

◆ abs_lookupTestAccMC()

◆ abs_lookupTestAccuracy()

◆ abs_scalar_gasExtractFromLookup()

◆ abs_speciesAdd()

◆ abs_speciesAdd2()

◆ abs_speciesInit()

◆ calc_lookup_error()

◆ choose_abs_nls()

◆ choose_abs_nls_pert()

◆ choose_abs_t_pert()

◆ f_gridFromGasAbsLookup()

◆ find_nonlinear_continua()

◆ p_gridFromGasAbsLookup()

◆ SpeciesSet()

Variable Documentation

◆ GFIELD4_FIELD_NAMES

◆ GFIELD4_P_GRID