[4954] | 1 | Simulation with double call to radiation for aerosols and GHG, |
---|
| 2 | in order to calculate IRF (present_day - preindustrial). |
---|
| 3 | |
---|
| 4 | Notes for GHG: |
---|
| 5 | ============ |
---|
| 6 | |
---|
| 7 | 1/ See config.card_preind for how to prescribe ghg_per values for the 2nd call (here preindustrial) : |
---|
| 8 | Example : |
---|
| 9 | N2O_ppb_per = 2.7302e+02 |
---|
| 10 | and not : |
---|
| 11 | N2O_ppb_per = _AUTO_: DEFAULT = 2.7302e+02 |
---|
| 12 | Using " _AUTO_ " will lead the model to crash because there is no option of "_AUTO_" values for "_per" in DRIVER/lmdz.driver, |
---|
| 13 | except for co2_ppm_per. |
---|
| 14 | co2_ppm_per is calculated as 4x varying CO2 if a CO2 file is available for reading via lmdz.card |
---|
| 15 | (typically the historical/scenario CO2 file). |
---|
| 16 | If this file is absent, the DEFAULT value defined in config.def is used |
---|
| 17 | (typically = 4xCO2_preind ; in RFMIP we use CO2_preind). |
---|
| 18 | |
---|
| 19 | 2/ Radiation variables are available for TOA and SRF, with "ghg" suffix for the 2nd call. |
---|
| 20 | The tropopause variables (t_, p_, z_tropopause) and the 3D radiation variables from 2nd call (*ghg) are also available, but not the 3D variables from the 1st call. |
---|
| 21 | So IRF for GHG can be calculated for TOA and SRF only. |
---|
| 22 | For complete IRF calculations (TOA, SRF and tropopause), see (1-year) run : |
---|
| 23 | /ccc/cont003/home/gencmip6/p25sima/RFMIPi/modipsl/config/LMDZOR_v6/CM616-LR-piClim-anthroO3-4-2RadCall-IRFtropo |
---|
| 24 | |
---|
| 25 | 3/ To set up a simulation including variables for IRF at tropopause, best is to take example from |
---|
| 26 | piClim-histall/CM619-LR-piClim-histall-3 |
---|
| 27 | See COMP/lmdz.card : |
---|
| 28 | |
---|
| 29 | note the use of PARAM/*.xml_2RadCall files, |
---|
| 30 | (key elements : new output file "histmthForIRFtropo", groups "fields_irf_aer_CMIPstyle", "fields_rad_ghg_* ", "*_tropopause" variables), |
---|
| 31 | |
---|
| 32 | and the post-processing (TS_MO) for : |
---|
| 33 | IRF variables for aerosols (with irf* names instead of the native "tospswad, topswaiâŠ") |
---|
| 34 | and for GHG 2nd call variables (with "ghg" suffix). |
---|
| 35 | |
---|