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Re: Extended GFS 0.5 degree data

Steve,

I am currently using the file names to key in on these files, and will
need some time to convert.

Also, I've recently noticed that the GRIB2 data sizes that I get through
CONDUIT are not the same as those on the ftp server. Some of the research
groups here have tried running the WRF using the GRIB2 data we get
via conduit, and it has failed with bad data error messages. The
exact same runs work using the data ftp'd direct from the ftp server.

I've tried cataloging some of the ftp server vs CONDUIT GRIB2 files
using wgrib2, and while wgrib2 works fine on the files ftp'd from
tgftp, it bombs many times on the CONDUIT files, error messages
like '7777 not found'.

I'd like to try to figure out what is happening here before the
GRIB1 GFS data is removed.

I can make available some example different files if you want to take
a look.

Pete

In a previous message to me, you wrote: 

 >
 >CONDUIT data users,
 >
 >We would like to increase the 0.5 degree (grid #4) GFS availability to
 >the CONDUIT data stream as discussed at the working group meeting in
 >January:
 >http://www.unidata.ucar.edu/projects/CONDUIT/Unidata_CONDUIT_Status_and_Imple
  >mentation_Update.pdf
 >
 >Currently, the CONDUIT feed provides F000 through F084 fields for the
 >GFS at the half degree resolution in GRIB2 format. We now have access to
 >the grids through F180 (an additional 1.2GB of data per model cycle)
 >and plan to add this to the data stream.
 >
 >The addition of these files will involve a change in source file names
 >of the existing and additional data files from the NWS ftp server file
 >naming convention: 
 >ftp://tgftp.nws.noaa.gov/SL.us008001/ST.opnt/MT.gfs_CY.HH/RD.YYYYMMDD/PT.grid
  >_DF.gr2/fh.FFFF_tl.press_gr.0p5deg
 >to the NCEP ftp server naming convention:
 >ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.YYYYMMDD/gfs.tHHz.p
  >grb2fFFF
 >
 >If you are currently using the 0.5 degree GFS products and the change of
 >file naming would cause problems for your use of the data, please
 >contact address@hidden as soon as possible.
 >Eventually, we would like to remove the legacy 1.0 degree GRIB1 format
 >(grid #3) products currently being sent in CONDUIT for the same
 >F000-F180 time period to allow for additional new data sets. We
 >encourage all users to transition to GRIB2 along with the NWS
 >announced changes so that new data sets can be utilized to their
 >fullest extent.
 >
 >Steve Chiswell
 >Unidata User Support
 >
 >=============================================================================
  >==
 >To unsubscribe conduit, visit:
 >http://www.unidata.ucar.edu/mailing-list-delete-form.html
 >=============================================================================
  >==
 >


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^ Systems Programmer               V Madison,         WI     53706    ^
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