Changes between Version 23 and Version 24 of Doc/Models/LMDZ


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Timestamp:
07/18/16 14:37:30 (8 years ago)
Author:
acosce
Comment:

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  • Doc/Models/LMDZ

    v23 v24  
    5858Note: the ce0l program from LMDZ4_AR5 cannot be used. Instead, use the LMDZ5/trunk 1508, or later, revision 1508. Once the limit.nc files are created, LMDZ4_AR5 or LMDZ5 can be used.  
    5959 
    60 '''Step 1''' [[BR]] 
     60### which sst and sic files ? ### 
     61#### Use SST of a coupled simulation without correction of anomalies #### 
    6162Identify the time series for the simulation you want to use. Use the tsol_oce variables for the surface temperature (SST) and pourc_sic for the sea ice concentration (SIC). The variables must be monthly outputs of LMDZ. 
    6263For example, the files for the IPSLCM5A rcp4.5 simulation are located at CCRT : 
    … …  
    8384}}} 
    8485 
    85  
    86 '''Step 2'''[[BR]] 
     86#### Use SST of a coupled simulation with correction of anomalies #### 
     87SST can be corrected with the difference between an AMIP reference SST and a reference SST from a coupled simulation. These two references must be on a same period. [[BR]] 
     88 
     89For example, you can use the SST from a historical simulation and the AMIP SST for the period 1979-2005. You can compute the difference and apply it to any period of the future RCP 4.5 simulation. [[BR]] 
     90 
     91In order to do so, you can use the create_sst_anomaly.ksh script (or use it as an example) instead of Step 1 above. Afterwards continue with Step 2 from above.  
     92 
     93The script is here: [[BR]] 
     94[http://forge.ipsl.jussieu.fr/igcmg/browser/TOOLS/INTERP_NUDGE/create_sst_anomaly.ksh].  
     95 
     96#### Files already created with the IPSL coupled model outputs #### 
     97Some coupled simulations have already been used as boundary conditions for simulations in forced mode. Read more on the igcmg wiki about these files and where to find them:  
     98[https://forge.ipsl.jussieu.fr/igcmg/wiki/BoundaryFiles] 
     99 
     100### land-sea mask / o2a.nc ### 
     101You can use restart files from a IPSLCM5/6 coupled simulation to start a simulation with the forced LMDZ model. The land-sea mask must be identical in the limit.nc and in the restart files. The land-sea mask of the coupled model is stored in the o2a.nc file.This file must exist when the limit.nc files are created in order to use the restarts of a coupled simulation. To this end, the complete path for the o2a.nc file with the proper resolution must be provided in CREATE_xxx/COMP/lmdz.card (in the list "!ListNonDel" and in the section  
     102"[!BoundaryFiles]"). You need to add the appropriate line at the !ListNonDel section in lmdz.card 
     103{{{ 
     104 
     105### Optional: Add the o2a.nc file to fit with the coupled configuration for the  
     106### land-sea mask. This file is different for different versions of the coupled model and 
     107### the different resolutions. Choose between following to fit with IPSLCM6 coupled model: 
     108#       (${R_IN}/ATM/IPSLCM6/eORCA1.1xLMD144142/o2a.nc, o2a.nc) 
     109#       (${R_IN}/ATM/IPSLCM6/ORCA2.3xLMD96x95_v1/o2a.nc, o2a.nc) 
     110 
     111}}} 
     112for example  
     113{{{ 
     114 
     115ListNonDel= (${R_IN}/ATM/Albedo.nc, .), \ 
     116        (${R_IN}/ATM/ECDYN.nc.20020101, ECDYN.nc), \ 
     117        (${R_IN}/ATM/ECPHY.nc, .), \ 
     118        (${R_IN}/ATM/Relief.nc, .), \ 
     119        (${R_IN}/ATM/Rugos.nc, .), \ 
     120        (${R_IN}/ATM/landiceref.nc, .),\ 
     121        (${R_IN}/ATM/IPSLCM6/eORCA1.1xLMD144142/o2a.nc, o2a.nc) 
     122 
     123}}} 
     124 
     125### the CREATE Experiment ###  
    87126The annual files can now be used directly with the ce0l program (revision 1508 or later) LMDZ5/trunk. The files must be renamed histmth_sst.nc and histmth_sic.nc in the execution directory. The AMIP files must not be in the execution directory because they will be used first.  
    88127 
    … …  
    106145}}} 
    107146 
    108 ## Using the coupled IPSL model outputs ##  
    109 ### Creating limit.nc with the coupled IPSL model outputs anomalies ### 
    110 The SST of a coupled simulation can be used as described [https://forge.ipsl.jussieu.fr/igcmg_doc/wiki/DocImodelBlmdz#Createlimit.ncfromthedataofapreviousLMDZsimulationcoupledorforced above] or it can be corrected with the difference between an AMIP reference SST and a reference SST from a coupled simulation. These two references must be on a same period. [[BR]] 
    111  
    112 For example, you can use the SST from a historical simulation and the AMIP SST for the period 1979-2005. You can compute the difference and apply it to any period of the future RCP 4.5 simulation. [[BR]] 
    113  
    114 In order to do so, you can use the create_sst_anomaly.ksh script (or use it as an example) instead of Step 1 above. Afterwards continue with Step 2 from above.  
    115  
    116 The script is here: [[BR]] 
    117 [http://forge.ipsl.jussieu.fr/igcmg/browser/TOOLS/INTERP_NUDGE/create_sst_anomaly.ksh].  
    118  
    119 ### Files already created with the IPSL coupled model outputs ### 
    120 Some coupled simulations have already been used as boundary conditions for simulations in forced mode. Read more on the igcmg wiki about these files and where to find them:  
    121 [https://forge.ipsl.jussieu.fr/igcmg/wiki/BoundaryFiles] 
    122  
    123 ### Using restart files of a IPSLCM5/6 coupled simulation to start a forced simulation ### 
    124  
    125 You can use restart files from a IPSLCM5/6 coupled simulation to start a simulation with the forced LMDZ model. The land-sea mask must be identical in the limit.nc and in the restart files. The land-sea mask of the coupled model is stored in the o2a.nc file.This file must exist when the limit.nc files are created in order to use the restarts of a coupled simulation. To this end, the complete path for the o2a.nc file with the proper resolution must be provided in CREATE_xxx/COMP/lmdz.card (in the list "!ListNonDel" and in the section  
    126 "[!BoundaryFiles]"). You need to add the appropriate line at the !ListNonDel section in lmdz.card 
    127 {{{ 
    128  
    129 ### Optional: Add the o2a.nc file to fit with the coupled configuration for the  
    130 ### land-sea mask. This file is different for different versions of the coupled model and 
    131 ### the different resolutions. Choose between following to fit with IPSLCM6 coupled model: 
    132 #       (${R_IN}/ATM/IPSLCM6/eORCA1.1xLMD144142/o2a.nc, o2a.nc) 
    133 #       (${R_IN}/ATM/IPSLCM6/ORCA2.3xLMD96x95_v1/o2a.nc, o2a.nc) 
    134  
    135 }}} 
    136 for example  
    137 {{{ 
    138  
    139 ListNonDel= (${R_IN}/ATM/Albedo.nc, .), \ 
    140         (${R_IN}/ATM/ECDYN.nc.20020101, ECDYN.nc), \ 
    141         (${R_IN}/ATM/ECPHY.nc, .), \ 
    142         (${R_IN}/ATM/Relief.nc, .), \ 
    143         (${R_IN}/ATM/Rugos.nc, .), \ 
    144         (${R_IN}/ATM/landiceref.nc, .),\ 
    145         (${R_IN}/ATM/IPSLCM6/eORCA1.1xLMD144142/o2a.nc, o2a.nc) 
    146  
    147 }}} 
    148147 
    149148