[ncl-talk] Manage netCDF metadata

[Dennis Shea]

http://www.ncl.ucar.edu/Document/Manuals/language_man.pdf

See the section:    Writing scalars to netCDF

=========
height   = ...
height!0 = "ncl_scalar"    ; <=== 'special' name

rotated_pole    = ...
rotated_pole!0 = "ncl_scalar"

On Wed, Dec 10, 2014 at 7:23 AM, Mark Chan <cym263 at yahoo.com> wrote:

> Dear NCL group,
>
> In the below is about the metadata of a netCDF file, in which each of the
> variables has the dimension info such as "bnds = 2". Is it any possible in
> NCL scripts that some dimension info could be omitted such as "skip" and
> "ncl5", so the variable "rotated_pole" would be as: ("ncl5" and "skip"
> won't show up)
>
>     char rotated_pole ;
>         rotated_pole:grid_mapping_name = "rotated_latitude_longitude" ;
>         rotated_pole:grid_north_pole_latitude = 90.f ;
>         rotated_pole:grid_north_pole_longitude = -180.f ;
>
> Thanks very much in advance!
>
> Best regards,
> Mark
>
> ===netCDF metadata generated by NCL===
> dimensions:
>     time = UNLIMITED ; // (12 currently)
>     rlon = 213 ;
>     rlat = 220 ;
>     skip = 1 ;
>     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(skip) ;
>         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 height" ;
>     double time_bnds(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" ;
>     double lat(rlat, rlon) ;
>         lat:long_name = "latitude" ;
>         lat:standard_name = "latitude" ;
>         lat:units = "degrees_north" ;
>
>
>
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