[Cosmic_announce] Edition 4 BUFR files expected soon!

[Doug Hunt]

Hi Dave, all:  I think Dave is right--we should not mix up two changes: 
One to BUFR edition 4 and one to the proposed center ID 175.  So, I'm 
attaching two *new* proposed BUFR files, this time with edition 4 and 
center ID 60.  We can make the change (if necessary) to center ID 175 when 
that ID is finalized.

Please let me know if *these* files would work for you!

Take care,

   Doug

dhunt at ucar.edu
Software Engineer
UCAR - COSMIC, Tel. (303) 497-2611

On Mon, 26 Nov 2012, Offiler, Dave wrote:

> Hi Doug,
>
> I would suggest sticking with 60 until the new code is formalised and
> published in the WMO
> 'red book' (WMO-306), when everyone will update their local operational
> tables. Right now,
> 175 is (at best) a proposal, and could, in principle, change before
> being formally agreed by WMO.
>
> Dave
>
> === Please note that I now work part-time, Mon-Wed only ===
> --
> David Offiler   Head Satellite Active Sensing Group
> Met Office   FitzRoy Road   Exeter   EX1 3PB   United Kingdom
> Tel: +44 (0)1392 88 6298    Fax: +44 (0)1392 88 5681
> E-mail: dave.offiler at metoffice.gov.uk   http://www.metoffice.gov.uk
>
> -----Original Message-----
> From: cosmic_announce-bounces at ucar.edu
> [mailto:cosmic_announce-bounces at ucar.edu] On Behalf Of Doug Hunt
> Sent: 21 November 2012 16:42
> To: Harald Anlauf
> Cc: Announcements about the COSMIC mission
> Subject: Re: [Cosmic_announce] Edition 4 BUFR files expected soon!
>
> Hi Harald:  I did notice a few small differences in the data values.
> These are due to the fact that I am using a different BUFR library that
> uses double precision rather than single precision.  So, if anything the
> new values ought to be more accurate.
>
> As to the 175 'originating center' value, we have contacted NOAA to
> apply to the WMO about getting 175 reserved for 'UCAR' rather than using
> 60 ('NCAR').
>
> Regards,
>
>   Doug
>
> dhunt at ucar.edu
> Software Engineer
> UCAR - COSMIC, Tel. (303) 497-2611
>
> On Wed, 21 Nov 2012, Harald Anlauf wrote:
>
>> Hi Doug!
>>
>> On Tuesday, 20. November 2012 21:06:28 Doug Hunt wrote:
>>> Greetings:
>>>
>>> The current version of BUFR files available from CDAAC and the GTS is
>
>>> edition 3.  By the end of November, the WMO wants all edition 3 files
>
>>> to be phased out in favor of the more recent edition 4 BUFR files.
>>>
>>> The change is only a small difference in the header--all the values
>>> remain the same.  Attached are sample edition 4 BUFR files from the
>>> COSMIC and C/NOFS missions.
>>
>> the attached data actually do show small differences to the data
>> disseminated via GTS (usually a few meters in impact parameter, and
>> also small differences in the bending angles), but the obs-model check
>
>> shows that the effective differences are much smaller than the
>> observation errors we apply operationally.
>>
>> While running these data through our assimilation system, I noticed
>> that the field "originating center" is set to 175 (i.e. reserved for
>> other centers).  Is there a reason that you do not use the value 60
>> there, or is it an oversight?
>>
>>> Next week we plan to start delivering these files.  Note that the
>>> version will change from the current '0001.0006' to '0001.0007'.
>>>
>>> Please let me (dhunt at ucar.edu) know if you see a problem with
>>> these files or need extra time!
>>
>> Cheers,
>> Harald
>>
>> --
>> Dr. Harald Anlauf
>> Deutscher Wetterdienst (DWD)           | Phone:  +49 69 8062 4941
>> FE12 / Datenassimilation               | Fax:    +49 69 8062 3721
>> Frankfurter Str. 135                   | e-Mail: harald.anlauf at dwd.de
>> 63067 Offenbach                        | Web:    http://www.dwd.de
>>
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