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Workspace Method abs_lookupCalc
Description
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.
Authors: Stefan Buehler
Synopsis
| abs_lookupCalc( | abs_lookup, abs_lookup_is_adapted, abs_species, abs_nls, f_grid, abs_p, abs_vmrs, abs_t, abs_t_pert, abs_nls_pert, abs_xsec_agenda ) |
Variables
| OUT | abs_lookup | (GasAbsLookup) | An absorption lookup table. |
| OUT | abs_lookup_is_adapted | (Index) | Flag to indicate whether abs_lookupAdapt has already been called. |
| IN | abs_species | (ArrayOfArrayOfSpeciesTag) | Tag groups for gas absorption. |
| IN | abs_nls | (ArrayOfArrayOfSpeciesTag) | Nonlinear species for absorption lookup table generation. |
| IN | f_grid | (Vector) | The frequency grid for monochromatic pencil beam calculations. |
| IN | abs_p | (Vector) | List of pressures to be used for the calculation of absorption coefficients. |
| IN | abs_vmrs | (Matrix) | The VMRs (unit: absolute number) on the abs_p grid. |
| IN | abs_t | (Vector) | List of temperatures to be used for the calculation of absorption coefficients. |
| IN | abs_t_pert | (Vector) | Temperature perturbations for the absorption lookup table. |
| IN | abs_nls_pert | (Vector) | Fractional perturbations for the nonlinear species in the absorption lookup table. |
| IN | abs_xsec_agenda | (Agenda) | Agenda to calculate scalar gas absorption cross sections. |