[ncl-talk] Is there a workaround for entries not found in grib file?

[Dennis Shea]

If you have the source GRIB description file .....

Here is a PyNCL (same as NCL) response by Dave Brown:
*     https://www.pyngl.ucar.edu/User_forum/Archives/2009/0094.html*
<https://www.pyngl.ucar.edu/User_forum/Archives/2009/0094.html>

If (say)

       float VAR_2_3_203_P0_L1_GLL0 [ lat_0, lon_0 ]
          center : US National Weather Service - NCEP (WMC)
          production_status : Operational products
          *long_name : unknown variable name*
          *units : unknown*
-----------------

       fgrb = addfile("foo.grb","r")
       x = f->VAR_2_3_203_P0_L1_GLL0    ; you can name the NCL script
variable anything
                                                                   ; kren =
f->VAR_2_3_203_P0_L1_GLL0
The user will have to provide the variable name and  units

        x at longname = "Phooey"
        x at units         = "???"

=======




On Thu, Sep 23, 2021 at 12:47 PM Andrew Kren - NOAA Federal via ncl-talk <
ncl-talk at mailman.ucar.edu> wrote:

> Hi ncl-talk,
>
> Not sure if this is fixable, but when I do an ncl_filedump on one of the
> HRRR (high-res atmospheric model) grib files, I get several warnings:
>
> Copyright (C) 1995-2019 - All Rights Reserved
>
>  University Corporation for Atmospheric Research
>
>  NCAR Command Language Version 6.6.2
>
>  The use of this software is governed by a License Agreement.
>
>  See http://www.ncl.ucar.edu/ for more details.
>
> warning: Entry (204) not found in code table file
> /opt/miniconda3/envs/ncl_stable/lib/ncarg/grib2_codetables/ncep/4/4.2.0.7.table
>
> ^Mwarning: Entry (205) not found in code table file
> /opt/miniconda3/envs/ncl_stable/lib/ncarg/grib2_codetables/ncep/4/4.2.0.7.table
>
> ^Mwarning: Entry (206) not found in code table file
> /opt/miniconda3/envs/ncl_stable/lib/ncarg/grib2_codetables/ncep/4/4.2.0.7.table
>
> ^Mwarning: Entry (201) not found in code table file
> /opt/miniconda3/envs/ncl_stable/lib/ncarg/grib2_codetables/ncep/4/4.2.0.16.table
>
> ^Mwarning: Entry (231) not found in code table file
> /opt/miniconda3/envs/ncl_stable/lib/ncarg/grib2_codetables/ncep/4/4.2.2.0.table
>
> ^Mwarning: Entry (232) not found in code table file
> /opt/miniconda3/envs/ncl_stable/lib/ncarg/grib2_codetables/ncep/4/4.2.2.0.table
>
> ^Mwarning: Entry (200) not found in code table file
> /opt/miniconda3/envs/ncl_stable/lib/ncarg/grib2_codetables/ncep/4/4.2.0.7.table
>
>
> I also get several variables where it says:
>
>
> float VAR_0_7_206_P0_2L103_GLC0 ( ygrid_0, xgrid_0 )
>
>          center :       US National Weather Service - NCEP (WMC)
>
>          production_status :    Operational products
>
>          long_name :    unknown variable name
>
>          units :        unknown
>
>          _FillValue :   1e+20
>
>          coordinates :  gridlat_0 gridlon_0
>
>          grid_type :    Lambert Conformal can be secant or tangent,
> conical or bipolar
>
>          parameter_discipline_and_category :    Meteorological products,
> Thermodynamic stability indices
>
>          parameter_template_discipline_category_number :        ( 0, 0,
> 7, 206 )
>
>          level_type :   Specified height level above ground (m)
>
>          level :        (  0, 500 )
>
>          forecast_time :        6
>
>          forecast_time_units :  hours
>
>          initial_time : 09/23/2021 (00:00)
>
>
> I know what these errors mean, that the variables are not distinguishable
> by the grib tables in ncl. I was wondering if anyone has any ideas on how
> best to rectify this issue? Is there a way to figure out the variable names?
>
> Thanks much as always!
> --
>
> Andrew Kren
> Meteorologist
> NOAA's National Weather Service
> Raleigh Forecast Office
> 1005 Capability Drive, Suite 300
> Raleigh, North Carolina 27606
> voice: 919-326-1035
> mailto: andrew.kren at noaa.govhttp://www.weather.gov/rah
>
>
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