How to write NetCDF files in IDL.

write-netcdf-idl

;   Set up the file & handler
    n_profiles = n_elements(lat) ; just pick any of your data arrays 
    fid=ncdf_create('FILENAME-GOES-HERE'+'.nc',/CLOBBER)
    d=indgen(2,/LONG) ; number of dimensions that will be created
   
;   Set Dimensions
    d[0]=ncdf_dimdef(fid,'n_profiles',n_profiles)   ; length 'j'
    d[1]=ncdf_dimdef(fid,'n_bins',n_bins)           ; length 'i'

;   Define variables to be stored
    var_id=ncdf_vardef(fid,'Longitude',d[0],/DOUBLE)
    var_id=ncdf_vardef(fid,'Latitude',d[0],/DOUBLE)

    var_id=ncdf_vardef(fid,'Temp',[d[1],d[0]],/double)
    var_id=ncdf_vardef(fid,'Pressure',[d[1],d[0]],/double)

;   Change modes
    ncdf_control,fid,/ENDEF

;   Write the data
    ncdf_varput,fid,'Longitude',rg_lon
    ncdf_varput,fid,'Latitude',rg_lat

    ncdf_varput,fid,'Temp',temp
    ncdf_varput,fid,'Pressure',pressure
    ncdf_varput,fid,'SH',sh
   
;   Close the file & release the handler   
    ncdf_close,fid
   
    print,' > Writing complete... Closing...'