The LMDZORINCA configurations (LMDZORINCA and LMDZORINCA_v5) allow you to couple the LMDz atmospheric circulation model, the ORCHIDEE land model, and the INCA atmospheric chemistry model.
Person in charge: Anne Cozic
LMDZORINCA_v5 is the default configuration. It is compatible with the IPSLCM5_v5, LMDZOR_v5, IPSLCM5CHT_v5 models. It is constructed with the following models:
This configuration allows you to work with the INCA version tuned for 39 levels.
It is not yet possible to use the new LMDZ physics scheme with this configuration.
LMDZORINCA is the configuration used for CMIP5. It is constructed with the following models:
This configuration allows you to work with the INCA version tuned for 19 levels.
When you compile a model configuration which includes the INCA and ORCHIDEE models, those two models can be activated or deactivated in your simulation. In LMDZORINCA_v5 these activations are managed by the submission directory you chose (in EXPERIMENTS).
Flag | Value | Meaning |
config_inca | none | run without INCA |
config_inca | aero | coupling with INCA AER/NMHC_AER |
config_inca | chem | coupling with INCA NMHC/GES |
Flag | Value | Meaning |
veget | y | run with Orchidee |
veget | n | run without Orchidee |
When you compile the model you must choose the chemistry component and its resolution:
With LDMZORINCA_v5 we recommend to use the 39 vertical level resolution. With LMDZORINCA we recommend to use the 19 vertical levels resolution.
You can add the compilation of another resolution by copying the syntax of an existing resolution. If you do so, you will need to regrid all input files for the chosen chemistry model. documentation To regrid the inca files
With the LMDZ model you can create initial files (start.nc, startphy.nc and limit.nc) for each simulation (for this, use the experiments : EXPERIMENTS/LMDZORINCA/CREATE/). However, start.nc file only contain zero-values for tracers when the model is coupled to INCA. You must therefore work on those values or use output files from existing simulations. By default, we provide one initial state per configuration.
With
They are defined in the [InitialStateFiles] section of lmdz.card
[InitialStateFiles] List= (${R_INIT}/CHM/LMDZORINCA/INCA${RESOL_CHM}/start.nc , start.nc ) \ (${R_INIT}/CHM/LMDZORINCA/INCA${RESOL_CHM}/startphy.nc , startphy.nc )
In the EXPERIMENTS directory the available configurations are LMDZORINCA, LMDZOR, LMDZ. In LMDZORINCA you can choose among three kind of experiments:
Each of those directories contain a config.card
Files definition to read the 10-m winds
[BoundaryFiles] List= (/ccc/work/cont003/dsm/p24data/ECMWF320x160/AN${year}/165_${year}${month}.nc , u10mec.nc)\ (/ccc/work/cont003/dsm/p24data/ECMWF320x160/AN${year}/166_${year}${month}.nc , v10mec.nc)\ (/ccc/work/cont003/dsm/p24data/ECMWF${RESOL_ATM_XY}/AN${year}/u10m_ecmwf_${year}${month}.nc , u10m.nc )\ (/ccc/work/cont003/dsm/p24data/ECMWF${RESOL_ATM_XY}/AN${year}/v10m_ecmwf_${year}${month}.nc , v10m.nc )
In the INCA4 model version, the text outputs are not in the standard output files. They are redirected to a text file per processor. These files are concatenated at the end of the simulation to create only one inca.out file. This file is saved in the DEBUG/ archive. If the simulation fails, the file is saved in the Debug/ directory which is available in the experiment directory.
You will find all the information needed to understand the lmdz.card file here.
You can work in nudged mode (by forcing the winds using files read by the LMDZ model) or in climatological mode (by using the wind values computed by LMDZ). If you work in nudged mode, several forcing files are available on the p24data shared account at TGCC : /ccc/work/cont003/dsm/p24data
If you have a simulation which includes the INCA model, you must not use the adjust option which creates biases at the beginning of the simulation in particular for configurations with aerosols. If you didn't change the models you can use Bands files which are defined by default in the lmdz.card files.
AER #LMDZ_Bands_file_name=/ccc/store/cont003/dsm/p86cozic/IGCM_OUT/LMDZORINCA/AER/L5OI4_Bands/ATM/Debug/L5OI4_Bands_Bands_96x95x39_32prc.dat_1 NMHC_AER #LMDZ_Bands_file_name=/ccc/store/cont003/dsm/p86cozic/IGCM_OUT/LMDZORINCA/NMHC_AER/L4OI3NA_39_Bands/ATM/Debug/L4OI3NA_39_Bands_Bands_96x95x39_32prc.dat_1 GES not provided
If you added computations in the model, we recommend to regenerate this file by performing a 3-month pre-simulation.
LMDZORINCA allows you to activate the aerosol impact on climate. To this end, we have used Céline Déandreis' PhD results.
This coupling can be made in two different modes:
Different flags were introduced to manage these new options: aerosol_couple and flag_aerosol
(in physiq.def).
The aerosols you can use with offline or online coupling are : SO4, BC, POM, SS and DUST. If your coupling is offline, refer to the [platform/documentation/modeles/LMDZ#Informationssurleforçageradiatifparlesaérosols next] chapter.
Flag | Value | Meaning |
aerosol_couple | n | offline coupling |
aerosol_couple | y | online coupling |
LMDZ offers two flags to activate the radiative forcings: ok_ade, ok_aie
Flag | Value | Meaning |
ok_ade | y/n | computing (or not) the aerosol direct effect |
ok_aie | y/n | computing (or not) the aerosol indirect effect |
The ok_ade and ok_aie flags are managed from lmdz.card :
You can also choose to compute the radiative forcing without their climatic impacts. In this case, you must use the feedb variable in the src/INCA_SRC/radlwsw_inca.F90 routine. If the variable equals 0 the climatic impact is not activated, if the variable equals 1 the climatic impact is activated.