Difference between revisions of "Building Opacity Tables"

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

describe the tools we used :

describe the tools we used:

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)

Explain strategies to calculate continuum opacities

@@ Line 1: / Line 1: @@
-How to build opacity tables?
+This page describes the main steps required to build new opacity tables for the Generic PCM.
-''This page comes mainly from the LMD Generic GCM user manual (https://trac.lmd.jussieu.fr/Planeto/browser/trunk/LMDZ.GENERIC/ManualGCM_GENERIC.pdf). It is still in development and needs further improvements''
+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
-== What is parallelism? ==
+== Calculation of high-resolution spectra ==
+describe the tools we used :
+* k-spectrum
+* home-made scripts
+== 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:
+* 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
 [[Category:Generic-Model]]