[ncl-talk] grib2 file read

[Debasish Hazra]

The link updated grib2 table is here :

http://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_table4-233.shtml

Thanks
Debasish

On Tue, Jul 26, 2016 at 1:33 PM, Dennis Shea <shea at ucar.edu> wrote:

> The issue is that the NGAC grib tables are not publicly available.
> If you know of where they are located, they can be included within NCL
>
> In fact, there is a JIRA ticket on this:
> [JIRA] (NCL-2442) GRIB-2: warning: Entry (not found in code table file
> .../grib2_codetables/ncep/4/4.3.tableJust yesterday, a comment was made
> on this ticket:
>
> ---------
>
> Unfortunately the "not found in code table file" errors
> that Dennis reported in this ticket cannot be corrected
> because the entries for that were not found are not documented
> by the NCEP GRIB2 web pages. Table 4.3 contains the generating process
> mapping. The values found in the file, all in the range 62000 to 62016,
> probably refer to local "generating processes" related to the NGAC model.
> If documentation can be found to describe these I would be happy to add
> them to the tables.
>
> The other option to get rid of these admittedly annoying
> messages might be to just not print the warnings for this piece of metadata
> since it is not usually of that much interest to the data consumer. I would
> be happy to consider this.
>
> ---------
> Note: the *values* returned by NCL are correct. The meta data is not
> because the
> NCEP GRIB2 web pages are not available.
>
> --------
>
> Again, if you know where the appropriate tables are located, please send
> to ncl-talk.
>
> THX
>
> On Tue, Jul 26, 2016 at 11:21 AM, Debasish Hazra <
> debasish.hazra5 at gmail.com> wrote:
>
>> Hi,
>>
>> I am trying to read grib2 file with ncl (v6.3) and it shows the following
>> error while trying to open it:
>>
>> fatal:An internal error has occurred. The file format requested does not
>> appear to be supported, could not open (ngac.t00z.aerf24.grib2)
>> Variable: f
>> Type: file
>> (0) File Missing Value : -1
>>
>> I kept the data file in ftp. Any help on this is appreciated.
>>
>> Thanks.
>> Debasish
>>
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