[conduit] 20070913: CONDUIT GRIB1 to GRIB2 transition

[Gerry Creager]

Chiz,

What are the chances of seeing NAM AWIP grid 221 via CONDUIT?

Is this a discussion topic (again) for AMS?

Thanks, Gerry

Steve Chiswell wrote:
> CONDUIT data recipients,
> 
> Re:  GRIB1 to GRIB2 transition notification which has been provided in
> numerous formats, such as:
> 
>         All GRIB1 data currently residing on the NCEP & TOC FTP servers
>         will be removed on 28 January 2008.  The schedule for the GRIB1
>         to GRIB2 conversion for NOAAPORT data has not yet been
>         established.  A schedule will be published as soon as it becomes
>         available.  It is anticipated that no GRIB1 data will be removed
>         from NOAAORT prior to January 2008
> 
> We would like to begin a timetable to replace the remaining GRIB1 format
> data sets
> in the CONDUIT data stream with the GRIB2 versions that are available on
> the NCEP ftp servers which are the source of the CONDUIT data stream.
> 
> For the past 15 months, RUC data in both GRIB1 and GRIB2 format has been
> delived
> by CONDUIT. At this time, we would like to know if anyone still needs
> the GRIB1 format data. By removing the redundant GRIB1 RUC data, we will
> free up some room
> to alternately add GRIB2 versions of NAM data sets for a brief period of
> overlap (approximately  1 week in duration) and then remove the
> redundant GRIB1 versions.
> Current NAM data sets being delivered in GRIB1 are "awipak" grid #216,
> "awip3d" grid #212, and "grbgrd" grid #104. The 12km NAM data is already
> delivered in GRIB2 so will not be affected.
> 
> After transitioning the NAM data sets, the GFS 1.0 degree (grid #003)
> data set will
> be considered. Options for this data set are:
>    1) Transition the GRIB1 version to GRIB2
>    or
>    2) Remove this data set entirely as a lower resolution redundant data
> set of the 
>         0.5  degree GFS data already being delivered in GRIB2 for the
> same levels,
>        parameters, forecast hours.
> 
> Other pending additions to CONDUIT include additional GEFS/TIGGE
> ensemble parameter members (approximately 11GB per day).
> 
> Your feedback, as always, is welcomed!
> 

-- 
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University
Cell: 979.229.5301 Office: 979.862.3982 FAX: 979.862.3983
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