Skip to content
mifads edited this page Jun 14, 2022 · 2 revisions

Welcome to the genchem wiki!

Here we document mainly updates. This info will be introduced to the readthedocs side also, though integrated into the text.

UPDATES:

2022-06: Choice of GNFR_CAMS or SNAP

GenChem was originally developed when the EMEP CTM used the so-called SNAP emission sector system, which has 11 source categories. The EMEP model currently uses a 19-sector system we refer to as GNFR_CAMS. To produce EMEP-ready files with GenChem one now needs to specify "-g" in the call to emep_setup.py, e.g.

./emep_setup.py EmChem19a-vbs -g

Omission of this -g flag simply gives the 11-sector SNAP splits, though this option is now deprecated.

In more detail:

In each base and extra_mechanisms directory there should now be an emissplit file for whichever sector scheme the user wants. For example, chem/inputs has directories for default splits for both systems, and in e.g. EmChem19a there are now files for both:

EmChem19a_emissplit_gnfr_defaults_voc.csv

EmChem19a_emissplit_snap_defaults_voc.csv

Any new schemes (e.g. in extra_mechanisms) must also have whichever file is needed. Preferably both.

Clone this wiki locally