Changes between Version 22 and Version 23 of Documentation/UserGuide/PreIndSim


Ignore:
Timestamp:
2014-10-23T10:44:06+02:00 (10 years ago)
Author:
luyssaert
Comment:

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  • Documentation/UserGuide/PreIndSim

    v22 v23  
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    179 We can choose from 5 aerosol groups which aerosols we want to account for during the simulation. 6 means that all 5 groups will be used. Activating ok_ade and ok_aie implies that the model accounts for both the direct and indirect effects of aerosols. Because we run without INCA, the aerosols are coupled and aerosol_couple is set to n. For ozone it a day time climatology, a night time climatology or both (=2) can be used. cdnc stands for cloud number count. The path of the aerosol files is also specified in COMP/lmdz.card (see below).    
     179We can choose from 9 aerosol groups which aerosols we want to account for during the simulation. 6 means that all 5 groups will be used. Activating ok_ade and ok_aie implies that the model accounts for both the direct and indirect effects of aerosols. Because we run without INCA, the aerosols are coupled and aerosol_couple is set to n. For ozone it a day time climatology, a night time climatology or both (=2) can be used. cdnc stands for cloud number count. The path of the aerosol files is also specified in COMP/lmdz.card (see below). For a more detailed description of the these aerosols settings have a look at [http://forge.ipsl.jussieu.fr/igcmg_doc/wiki/DocImodelBlmdz#Informationabouttheaerosolradiativeforcing].   
    180180{{{ 
    181181flag_aerosol=6 
     
    192192}}} 
    193193 
    194 ERAI nudging files for wind (u and v) have been interpolated to the zoomed grid using the method described here : ​[https://forge.ipsl.jussieu.fr/igcmg/wiki/platform/en/documentation/I_modeles/B_LMDZ#Interpolationofnudgefiles]. If you are not using a zoomed grid that has been used previously, you will have to do this yourself. The years 1870 to 1899 and 1980 to 2011 have been prepared for the 128x118 zoomed grid and are stored at /ccc/work/cont003/dsm/p86ipsl/IGCM/BC/ATM/LMDZ/LMD128118/NUDGE_FILES/ERAI. 
     194The years 1870 to 1899 and 1980 to 2011 have been prepared for the 128x118 zoomed grid and are stored at /ccc/work/cont003/dsm/p86ipsl/IGCM/BC/ATM/LMDZ/LMD128118/NUDGE_FILES/ERAI. If you are not using a zoomed grid that has been used previously, or you want to use the 128*118 grid for different years, you will have to prepare your own nudging files.  ERAI nudging files for wind (u and v) can be interpolated to the zoomed grid using the method described here : ​[https://forge.ipsl.jussieu.fr/igcmg/wiki/platform/en/documentation/I_modeles/B_LMDZ#Interpolationofnudgefiles]. Note that you must be in the group subipsl to have the permission to access these files. Contact Anne Cozic for TGCC to be added to subipsl.  
    195195 
    196196We still need to tell the model which nudging files it should use. This requires a change to COMP/lmdz.card so that libIGCM knows to copy the files before the run. Note that here we substitute the argument ${year} by 1860 so we will use the same wind fields during the 20 years of the experiment.