Difference between revisions of "Building Opacity Tables"
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| − | This page describes the main steps required to build new opacity tables. | + | This page describes the main steps required to build new opacity tables for the Generic PCM. |
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| + | There are three important steps to consider: | ||
| + | * (1) calculate high-resolution spectra for a grid of pressures, temperatures and mixing ratios. | ||
| + | * (2) convert these high-resolution spectra into correlated-k tables | ||
| + | * (3) add continuum opacity tables | ||
== Calculation of high-resolution spectra == | == Calculation of high-resolution spectra == | ||
| Line 10: | Line 15: | ||
== Building correlated-k tables == | == Building correlated-k tables == | ||
| + | describe the tools we used: | ||
| + | * home-made scripts | ||
| + | * exo-k (http://perso.astrophy.u-bordeaux.fr/~jleconte/exo_k-doc/index.html) | ||
Several important notes: | Several important notes: | ||
Latest revision as of 19:47, 24 October 2023
This page describes the main steps required to build new opacity tables for the Generic PCM.
There are three important steps to consider:
- (1) calculate high-resolution spectra for a grid of pressures, temperatures and mixing ratios.
- (2) convert these high-resolution spectra into correlated-k tables
- (3) add continuum opacity tables
Calculation of high-resolution spectra
describe the tools we used :
- k-spectrum
- home-made scripts
describe the tools we used:
- home-made scripts
- exo-k (http://perso.astrophy.u-bordeaux.fr/~jleconte/exo_k-doc/index.html)
Several important notes:
- The units of correlated-k tables is cm^2/molec.
- The format of correlated-k tables is (n_temperature, n_pressure, n_vmr, n_band, n_gauss)
Adding continuum opacities
Explain strategies to calculate continuum opacities
- Usually the continuum units used as input in the GCM is cm-1 amagat-2
