[gradsusr] Help with CMIP5 sea ice control file

[Andrew Friedman]

Hi Joyce,

Jennifer Adams posted some scripts and instructions for working with CMIP5 output here: ftp://cola.gmu.edu/pub/jma/cmip5/

Andrew

On Mar 15, 2014, at 9:48 AM, Joyce Meyerson <hobo at atmos.ucla.edu> wrote:

> Dear GrADS user group,
> 
> Can someone help me create a control file for CMIP5 CCSM4 sea ice? I understand that I have to make a PDEF declaration but for the life of me I don't know how. I saw a promising post from 1/4/13 from Jennifer Adams titled "CMIP5 and GrADS" but no follow-up. 
> 
> Thanks in advance.
> Joyce
> 
> netcdf sic_OImon_CCSM4_historical_r1i1p1_185001-200512 {
> dimensions:
>         time = UNLIMITED ; // (1872 currently)
>         j = 384 ;
>         i = 320 ;
>         bnds = 2 ;
>         vertices = 4 ;
> variables:
>         double time(time) ;
>                 time:bounds = "time_bnds" ;
>                 time:units = "days since 0000-01-01 00:00:00" ;
>                 time:calendar = "noleap" ;
>                 time:axis = "T" ;
>                 time:long_name = "time" ;
>                 time:standard_name = "time" ;
>         double time_bnds(time, bnds) ;
>         int j(j) ;
>                 j:units = "1" ;
>                 j:long_name = "cell index along second dimension" ;
>         int i(i) ;
>                 i:units = "1" ;
>                 i:long_name = "cell index along first dimension" ;
>         float lat(j, i) ;
>                 lat:standard_name = "latitude" ;
>                 lat:long_name = "latitude coordinate" ;
>                 lat:units = "degrees_north" ;
>                 lat:bounds = "lat_vertices" ;
>         float lon(j, i) ;
>                 lon:standard_name = "longitude" ;
>                 lon:long_name = "longitude coordinate" ;
>                 lon:units = "degrees_east" ;
>                 lon:bounds = "lon_vertices" ;
>         float lat_vertices(j, i, vertices) ;
>                 lat_vertices:units = "degrees_north" ;
>         float lon_vertices(j, i, vertices) ;
>                 lon_vertices:units = "degrees_east" ;
>         float sic(time, j, i) ;
>                 sic:standard_name = "sea_ice_area_fraction" ;
>                 sic:long_name = "Sea Ice Area Fraction" ;
>                 sic:comment = "aice, CMIP5_table_comment: fraction of grid cell covered by sea ice." ;
>                 sic:units = "%" ;
>                 sic:original_name = "aice" ;
>                 sic:cell_methods = "time: mean (interval: 30 days)" ;
>                 sic:cell_measures = "area: areacello" ;
>                 sic:history = "2011-10-31T14:37:55Z altered by CMOR: replaced missing value flag (1e+30) with standard missing value (1e+20)." ;
>                 sic:missing_value = 1.e+20f ;
>                 sic:_FillValue = 1.e+20f ;
>                 sic:associated_files = "baseURL: http://cmip-pcmdi.llnl.gov/CMIP5/dataLocation gridspecFile: gridspec_seaIce_fx_CCSM4_historical_r0i0p0.nc areacello: a
> reacello_fx_CCSM4_historical_r0i0p0.nc" ;
>                 sic:coordinates = "lat lon" ;
> 
> // global attributes:
>                 :institution = "NCAR (National Center for Atmospheric Research) Boulder, CO, USA" ;
> .
> .
> .
> 
> *********************
> 
> **************************
> Joyce Meyerson
> UCLA
> Dept. of Oceanic & Atmospheric Sciences
> 7235 Math Science Bld.
> Los Angeles, CA 90095-1565
> hobo at atmos.ucla.edu
> 
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