[ncl-talk] metadata for netCDF file

[Mark Chan]

Dear NCL users,
In the below is about the metadata of a netCDF file, generated by using NCL script. I would like to do some modification about the metadata. Can one give any suggestion how to do it?
(1) modifying the coordinates from (tas:coordinates = "lon lat") to (tas:coordinates = "lon lat height")(2) the rotated_pole is avariable without a dimension, because it is a variable without anydata. How can I improve it here?(3) what is the meaning of ncl3 and ncl5? how to remove them from the metadata?
Thanks so much in advance.
Cheers,Mark


===metadata below=========
ncdump -h tas_AFR-44_NCC-NorESM1-M_historical_r1i1p1_BCCR-WRF331C_v1_mon_195001-195012.nc 

netcdf tas_AFR-44_NCC-NorESM1-M_historical_r1i1p1_BCCR-WRF331C_v1_mon_195001-195012 {
dimensions:
    time = UNLIMITED ; // (12 currently)
    rlon = 213 ;
    rlat = 220 ;
    ncl3 = 9 ;
    bnds = 2 ;
    ncl5 = 1 ;
variables:
    double time(time) ;
        time:long_name = "time" ;
        time:standard_name = "time" ;
        time:units = "days since 1949-12-01 00:00:00" ;
        time:calendar = "standard" ;
        time:axis = "T" ;
        time:bounds = "time_bnds" ;
    double rlon(rlon) ;
        rlon:long_name = "longitude in rotated pole grid" ;
        rlon:standard_name = "grid_longitude" ;
        rlon:units = "degrees" ;
        rlon:axis = "X" ;
    double rlat(rlat) ;
        rlat:long_name = "latitude in rotated pole grid" ;
        rlat:standard_name = "grid_latitude" ;
        rlat:units = "degrees" ;
        rlat:axis = "Y" ;
    char rotated_pole(ncl3) ;
        rotated_pole:grid_mapping_name = "rotated_latitude_longitude" ;
        rotated_pole:grid_north_pole_latitude = 90.f ;
        rotated_pole:grid_north_pole_longitude = -180.f ;
    float tas(time, rlat, rlon) ;
        tas:long_name = "Near-Surface Air Temperature" ;
        tas:standard_name = "air_temperature" ;
        tas:units = "K" ;
        tas:cell_methods = "time: mean" ;
        tas:_FillValue = 1.e+20f ;
        tas:missing_value = 1.e+20f ;
        tas:coordinates = "lon lat" ;
    double time_bnds(time, bnds) ;
        time_bnds:long_name = "Time Bounds" ;
        time_bnds:standard_name = "time bounds" ;
        time_bnds:coordinates = "time bnds" ;
    double height(ncl5) ;
        height:long_name = "height" ;
        height:standard_name = "height" ;
        height:units = "m" ;
        height:positive = "up" ;
        height:axis = "Z" ;
    double lon(rlat, rlon) ;
        lon:long_name = "longitude" ;
        lon:standard_name = "longitude" ;
        lon:units = "degrees_east" ;
        lon:bounds = "lon_bnds" ;
        lon:coordinates = "lon lat" ;
    double lat(rlat, rlon) ;
        lat:long_name = "latitude" ;
        lat:standard_name = "latitude" ;
        lat:units = "degrees_north" ;
        lat:bounds = "lat_bnds" ;
        lat:coordinates = "lon lat" ;
    double lon_bnds(rlat, rlon, bnds) ;
        lon_bnds:long_name = "Longitude Bounds" ;
        lon_bnds:standard_name = "longitude bounds" ;
        lon_bnds:coordinates = "lon lat bnds" ;
    double lat_bnds(rlat, rlon, bnds) ;
        lat_bnds:long_name = "Latitude Bounds" ;
        lat_bnds:standard_name = "latitude bounds" ;
        lat_bnds:coordinates = "lon lat bnds" ;


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20141204/05b64fdd/attachment.html