| 426 | |
| 427 | === Procédure pour faire une simu xxx-bgc === |
| 428 | |
| 429 | C'est une simu où le rayonnement voit une valeur fixe (en général préindustrielle) de CO2, mais la végétation et la biogéochimie marine voient les valeurs variables de CO2. |
| 430 | |
| 431 | COMP |
| 432 | In COMP directory you need to modify orchidee.card and set the variable as follows: |
| 433 | FORCE_CO2_VEG = y |
| 434 | The consequence of that flag is to have a CO2 concentration value in ORCHIDEE different from LMDz |
| 435 | |
| 436 | DRIVER |
| 437 | in the DRIVER directory, you need to modify |
| 438 | |
| 439 | 1/ In lmdz.driver, replace, only for CO2, |
| 440 | {{{ |
| 441 | Annee_${year} |
| 442 | }}} |
| 443 | by |
| 444 | {{{ |
| 445 | Annee_1850 |
| 446 | }}} |
| 447 | Non-CO2 forcings are unchanged (and depend on the experimental design). |
| 448 | |
| 449 | 2/ In orchidee.driver, you need to impose a CO2 concentration value different from the one of LMDz, by adding the following 4 lines. |
| 450 | {{{ |
| 451 | # CO2 forcing for the current year |
| 452 | IPCC_CO2=`grep Annee_${year} CO2.txt | awk -F= '{print $2}'` |
| 453 | echo '(ORCHIDEE) ATM_CO2='${IPCC_CO2} |
| 454 | IGCM_comp_modifyDefFile blocker orchidee.def ATM_CO2 ${IPCC_CO2} |
| 455 | }}} |
| 456 | |
| 457 | 3/ In pisces.driver, you need to impose a CO2 concentration value different from the one of LMDz, by commenting 4 lines and adding 3. |
| 458 | {{{ |
| 459 | #IGCM_debug_Print 1 'Update atcco2 in namelist_pisces_cfg with same value as for LMDZ' |
| 460 | #LMDZ_CO2=$( lmdzgrep2 co2_ppm config.def ) |
| 461 | #IGCM_debug_Print 1 "LMDZ_CO2 : ${LMDZ_CO2} " |
| 462 | #IGCM_comp_modifyNamelist force namelist_pisces_cfg atcco2 ${LMDZ_CO2} |
| 463 | IPCC_PIS_CO2=`grep Annee_${year} CO2.txt | awk -F= '{print $2}'` |
| 464 | echo '(PISCES) atcco2='${IPCC_PIS_CO2} |
| 465 | IGCM_comp_modifyNamelist blocker namelist_pisces_cfg atcco2 ${IPCC_PIS_CO2} |
| 466 | }}} |
| 467 | |
| 468 | 4/ In the PARAM directory you need to modify orechidee.def.CWRR and set the variable as follows: |
| 469 | {{{ |
| 470 | FORCE_CO2_VEG = y |
| 471 | ATM_CO2= _AUTOBLOCKER_ |
| 472 | }}} |
| 473 | |