Changes between Version 3 and Version 4 of LMDZOR_v4


Ignore:
Timestamp:
04/29/11 15:05:26 (13 years ago)
Author:
jgipsl
Comment:

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  • LMDZOR_v4

    v3 v4  
    3838}}} 
    3939 
    40 '''Step 1 bis''' 
    41 If you want to create anomaly SST instead of direct model output SST : do it now. Description to come. 
    42  
    4340'''Step 2'''[[BR]] 
    4441The yearly files are now directly usable with the ce0l program revision 1508 LMDZ5/trunk or later. They should be renamed as histmth_sst.nc and histmth_sic.nc before running. The AMIP files must not be in the same run directory, in that case they will be used instead of the model output files. Use the CREATE interannual experience to create the boundary conditions for the interval of years needed. Change in lmdz.card_Interannual AMIP yearly files towards yearly time series : 
    … …  
    5754Modify the period in config.card_Interannual. Don't forget to copy or link the lmdz.card_Interannal into lmdz.card and config.card_Interannual into config.card. Submit the experience. 
    5855 
     56=== SST anomaly === 
     57The SST from the coupled model can be used directly as above or corrected with the difference between a reference SST from AMIP and a reference SST from the coupled model output. These two references should be at the same period for example for the years 1979-2005. For example for the simulation RCP 4.5, use SST from historical simulation as reference compare to AMIP SST.  
     58 
     59To do this, use the script CREATE/SCRIPT/create_sst_anomly.ksh instead of step 1 above. See the script [http://forge.ipsl.jussieu.fr/igcmg/browser/CONFIG/LMDZOR/branches/LMDZOR_v4/CREATE/SCRIPT/create_sst_anomaly.ksh, here]. 
     60 
    5961 
    6062== Interpolation of nudge files == 
    61 The files that will be used for the nudging (''fr'' guidage) must be interpolated to the model grid before running the gcm. Scripts to do this are stored in directory CREATE/SCRIPT. To interpolate ERA-Interim use the script interp_from_era.ksh. You must first modify the beginning of this script. To interpolate LMDZ model output files use the script interp_from_TS.ksh. Both scripts depend on the script era2gcm.ksh. These script access the archive directory with a use in ferret. Therefore it is not possible to use them from vargas or brodie. These scripts are tested at mercure and ulam. Follow step 1 to 3 :  
     63The files that will be used for the nudging (''fr'' guidage) must be interpolated to the model grid before running the gcm. Scripts to do this are stored in directory CREATE/SCRIPT. To interpolate ERA-Interim use the script [http://forge.ipsl.jussieu.fr/igcmg/browser/CONFIG/LMDZOR/branches/LMDZOR_v4/CREATE/SCRIPT/interp_from_era.ksh, interp_from_era.ksh]. You must first modify the beginning of this script. To interpolate LMDZ model output files use the script [http://forge.ipsl.jussieu.fr/igcmg/browser/CONFIG/LMDZOR/branches/LMDZOR_v4/CREATE/SCRIPT/interp_from_TS.ksh, interp_from_TS.ksh]. Both scripts depend on the script [http://forge.ipsl.jussieu.fr/igcmg/browser/CONFIG/LMDZOR/branches/LMDZOR_v4/CREATE/SCRIPT/era2gcm.ksh, era2gcm.ksh]. These script access the archive directory with a use in ferret. Therefore it is not possible to use them from vargas or brodie. These scripts are tested at mercure and ulam. Follow step 1 to 3 :  
    6264 
    63651) Create file grilles_gcm.nc[[BR]] 
    … …  
    8587 
    8688== Nudged run == 
    87 Follow 3 steps to activate nudging in LMDZ. [[BR]] 
     89Follow 3 steps to activate nudging in LMDZ : [[BR]] 
    8890 
    89 1) Set parameter ok_guide=y in lmdz.card. [[BR]] 
     911) Set parameter ok_guide=y in lmdz.card. The lmdz.driver will then put ok_guide=y in the guide.def file.[[BR]] 
    9092 
    91 2) Modify parameter file guide.def containing specifications for the nudging according to the experience.[[BR]] 
     932) Add files containing the nudging variables in lmdz.card (''_Climat'' or ''_AMIP'') in section !BoundaryFiles. These files have to be interpolated previously to the model horizontal grid.  
    9294 
    93 3) Add files containing the nudging variables in lmdz.card (''_Climat'' or ''_AMIP'') in section !BoundaryFiles. These files have to be interpolated previously to the model horizontal grid.  
     953) Most probably you have to modify parameter file guide.def containing specifications for the nudging according to your experience.[[BR]] 
    9496 
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