how to get weights file to map ne120 to 0.23 resolution?

[rakeshtejak@gmail_com]

Hi,I intend to use AMWG diagnostic package to analyse CAM data at ne120 resolution. In the map_files directory of AMWG package there is no source, destination and weights file for this resolution, which AMWG uses to regrid from ne120 CAM-SE to 0.23 rectangular grid. How to get these files? Any help regarding this query will be higly appreciated.Thank you. With regards. 

 

[hannay]

The AMWG package should automatically created the map files if they don't exist. At ne120, it will take a long time but the map files should be created automatically.

 

[rakeshtejak@gmail_com]

Hi,I have tried it. But it is unable to map from ne120 to 0.23 CAM-FV and ends with following error:  Regridding Test case REMAP /Users/MASTER/raki/NCAR/diag_amwg//f1850_ne120tx01/out/f1850_ne120tx01_01_climo.nc from CAM-SE grid to RECTILINEAR 0.23x0.31 (0)Regridding: (0)SRC:/Users/MASTER/raki/NCAR/diag_amwg//f1850_ne120tx01/out/f1850_ne120tx01_01_climo_SE.nc(0)DST:/Users/MASTER/raki/NCAR/diag_amwg//f1850_ne120tx01/out/f1850_ne120tx01_01_climo.nc(0)Creating srcGrid description /Users/MASTER/raki/NCAR/cam//map_files/ne120.ncfatal:Could not create (/Users/MASTER/raki/NCAR/cam//map_files/ne120.nc)fatal:["Execute.c":8128]:Execute: Error occurred at or near line 954 in file $NCARG_ROOT/lib/ncarg/nclscripts/esmf/ESMF_regridding.nclfatal:["Execute.c":8126]:Execute: Error occurred at or near line 177  Is there any other way to get it done? Thank you.With Regards.

 

[hannay]

You need to have permissions to write into:
/Users/MASTER/raki/NCAR/cam//map_files/Please make sure that you have permission to write into that directory. Otherwsie you can create the mapping into your own directory.ALso, when the permission problem is solved, you are likely to hit another problem with file size if you remap from ne120->FV0.23To solve this issue, use the option:

<strong>setfileoption</strong>("nc","Format","LargeFile")<br /><br />in your script before the addfile statement..

See Example 4 at:http://www.ncl.ucar.edu/Document/Functions/Built-in/setfileoption.shtml