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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
CONDUIT Data users, Just as a reminder, the GRIB2 format 40 Km NAM (awip3d) grids were added to the CONDUIT data stream beginning with the 12Z run today. The legacy GRIB1 awipak (grid 216) and grbgrd (grid 104) grids were removed at the same time. The awip3d grids will be available as both GRIB1 and GRIB2 format products on CONDUIT for 2 weeks. On Oct 30, the GRIB1 awip3d grids will be removed. Steve Chiswell Unidata User Support ----------------------------------------------------------------------------- Date: Fri, 21 Sep 2007 13:21:10 -0600 CONDUIT data users, On Tuesday Sep 25, NCEP will begin producing 10 additional fields in the GEFS ensemble data output in support of TIGGE. These fields are: - Specific humidity at 1000, 925, 850, 700, 500, 300, 250, & 200 mb - Potential vorticity at 320K theta - Dewpoint temperature at 2 m AGL These parameters will be added to the files being inserted as: data2/TIGGE/gepXX.tHHz.pgrb2cfFF The current size of these files is ~300KB, and will increase to ~800KB per perturbation (20) and forecast time (65) for a total of 650MB per run time (4x per day). After taking in to account feedback received from my message on Sep 13, 2007 regarding replacement of existing GRIB1 data sets with GRIB2 versions, a two week transition period between changes will be scheduled as follows: DATE 10/02/2007 Remove existing RUC GRIB1 data (GRIB2 data already being sent) Add NAM awipak and grbgrd GRIB2 data files 10/16/2007 Remove NAM awipak and grbgrd GRIB1 data files Add NAM awip3d GRIB2 data files 10/30/2007 Remove NAM awip3d GRIB1 data files I will be updating the CONDUIT data examples on the web page with additional patterns to reflect these changes. Steve Chiswell Unidata User Support -- Steve Chiswell <chiz@xxxxxxxxxxxxxxxx> Unidata
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