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Main departures from the mainstream version
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.. role:: bash(code)
   :language: bash

The sources for LMDz-SACS in the CIF are in :bash:`model_sources/DISPERSION_gch/`. They are based on the sources of the off-line LMDz4 with SACS for methane oxidation chain, also used in PYVAR. Departures from this version are:
  - additions for the comparison to observations: reading and writing of relevant files
  - modular chemical scheme following the same principles as CHIMERE
  - fluxes are stored in one file per species instead of one file for all
  - for modularity and clarity, various input information is read in different files. For example, the coordinates are read in vcoord.nc instead of restart.nc, which is assumed to contain only the initial state. This has been implemented so that it is still possible to use the large restart.nc files: vcoord.nc is then simply a link to restart.nc (made by the CIF from the user's yaml). 
  - **to be continued**


The tangent-linear and adjoint codes follow the forward one.