WHERE AMERICA'S CLIMATE AND WEATHER SERVICES BEGIN
AVN/GFS Renaming Project
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On 24 April 2002 the NCEP AVN
model was renamed to the GFS (Global
Forecast System). The name AVN is still used on operational NWS
FTP
servers to describe GFS model data sets. A project has begun
within
NCEP Central Operations (NCO) to rename the AVN labaled products on
these servers to GFS. This project will be accomplished in two
stages. By 15 June 2004 the FTP servers will be populated with
symbolically linked data with the GFS name which point to the currently
named AVN data sets. The scond phase of this project will remove
all
AVN named products leaving only the GFS named products behind.
This
second phase will be accomplished no earlier than (NET) 1 January
2005. The
exact date of this change will be published as soon as it is known.
The specific changes, broken down by server, are as follows: |
| NWS Operational FTP Server |
| The GFS data are currently
located under the following location: ftp://tgftp.nws.noaa.gov/SL.us008001/ST.opnl there are four sub-directories that point to the GFS data, these are: MT.avn_CY.00 MT.avn_CY.06 MT.avn_CY.12 MT.avn_CY.18 Phase 1 -- On 14 June 2004 the following sub-directories will be added which point to the data in the above locations: MT.gfs_CY.00 MT.gfs_CY.06 MT.gfs_CY.12 MT.gfs_CY.18 Phase 2 -- NET 1 January 2005, the MT.avn_CY.{CC} directories will be removed. |
| NCEP
FTP Server |
| The GFS data are currently
located under the following location: ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/avn/prod the data are stored under a sub-directory named with the current date as follows: avn.{YYYYMMDD} where YYMMDD is the current date. Under this directory are a series of files that are named: 1. gblav.t{CC}z.bf[FF} 2. gblav.t{CC}z.bufrsnd.tar.gz 3. gblav.t{CC}z.pgrb2f{FF} 4. gblav.t{CC}z.pgrbf{FFF} 5. gblav.t{CC}z.pgrbif{FFF} 6. gblav.t{CC}z.sf{FFF} 7. gblav.t{CC}z.sfluxgrbf{FFF} 8. gblav.t{CC}z.updated.status.tm00.bufr_d 9. gblav_grb211.t{CC}z.pgrbf{FFF} where CC is the model cycle time (00, 06, 12, or 18) and FF and FFF are the forecast hours. Phase 1 -- On 15 June 2004 you will also be able to access the same GFS data from the following location: ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/gfs/prod the data will be stored under a sub-directory named with the current date as follows: gfs.{YYYYMMDD} Under this directory the above files will be renamed as follows: 1. gfs.t{CC}z.bf[FF} 2. gfs.t{CC}z.bufrsnd.tar.gz 3. gfs.t{CC}z.pgrb2f{FF} 4. gfs.t{CC}z.pgrbf{FFF} 5. gfs.t{CC}z.pgrbif{FFF} 6. gfs.t{CC}z.sf{FFF} 7. gfs.t{CC}z.sfluxgrbf{FFF} 8. gfs.t{CC}z.updated.status.tm00.bufr_d 9. gfs_grb211.t{CC}z.pgrbf{FFF} User should begin to migrate their processing to point to these data at this time. Phase 2 -- NET 1 January 2005 GFS data in the following directories: ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/avn/prod/avn.{YYYYMMDD} will no longer be available. Users should have mirgrated their processing to point to the following directories: ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.{YYYYMMDD} |
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