Version 2 (modified by jgipsl, 11 years ago) (diff) |
---|
Change atmospheric CO2 scalar value
For offline simulations, the scalar value for atmospheric CO2 can be set in run.def using ATM_CO2=x, default value is 350. For constant value, set directly in run.def your choice.
For a annual change in CO2, using OOL_SEC_STO and libIGCM, you can add a ascii file with annual values and the driver will update ATM_CO2. The file has to be with following syntax :
Annee_1990=352.00 Annee_1991=353.55 Annee_1992=355.09 Annee_1993=356.63 Annee_1994=358.16
The file must be added to the input files and it must be called CO2.txt. To do so, add in stomate.card section BoundaryFiles/ListNonDel :
[BoundaryFiles] ListNonDel= (../../../yourfile_CO2.txt, CO2.txt)
Files with CO2 values according to the CMIP5 and TRENDY2 protocole can be found at the shared repository. For exemple :
basedir/IGCM/BC/ATM/LMDZOR/IPCC_AR5/RCPs/RCP85/CO2_1765_2500.txt basedir/IGCM/BC/ATM/LMDZOR/IPCC_AR5/HISTORIQUE/CO2_1765_2005.txt basedir/IGCM/BC/SRF/OL2/CO2_1860_2012_TRENDY2.txt
where basedir
- at curie, basedir=/ccc/work/cont003/dsm/p86ipsl
- at ada, basedir=/workgpfs/rech/psl/rpsl035
- at obelix, basedir=/home/orchidee01/mmancip (only protocole TRENDY2 at obelix)
NB! Note that if the year you simulate is not in the file, run.def will contain an empty variable "ATM_CO2=" and the model will of course crash.