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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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> Thanks for the quick reply! > > Does this mean the files from LDM do not require "stitching" together? > (that is, no concatenation needed?) > > -Donna Donna, The GFS 0.5 degree are on GRID #4, which is a single global grid. No tiles. You can find out more about the various grids in use at: http://www.nco.ncep.noaa.gov/pmb/docs/on388/tableb.html The GFS grids in the HRS data stream called the quasi thinned grids numbers 37-44 are 8 1.25 degree tiles that have to be stitched together for a global data set. The CONDUIT grids are a higher temporal and spatial resolution, with many more parameters than the HRS grids. Steve Chiswell Unidata User Support > > Unidata CONDUIT Support wrote: > >> With a pair of tropical storms bearing down on us, I've now forgotten > >> how to snag all the GFS 0.5 deg products and concatenate them into a > >> consistent grib2 3-hourly file. Could I beg for some help? > >> > >> Thanks gerry > >> > >> > >> > > > > Gerry, > > > > The cannonical naming is provided on the conduit web page: > > http://www.unidata.ucar.edu/data/conduit/ldm_idd/gfs_files.html > > > > To file individual times into separate grib files, something like: > > > > CONDUIT <tab> (gfs)\.(..........)/.*(pgrb2)(.*) !.*! > > <tab> FILE <tab> data/\1/\2\4.\3 > > > > Note that the forecast time matched by field 4 above can be either > > "anl", "fxx", or "fxxx" so you have both 2 and 3 digit hour possibilities > > as well as the string "anl". The important part above is to use the "pgrb2" > > string in the pattern which will only match the 0.5 degree files in grib2 > > as the 1.0 degree and 2.5 degree files are "pgrb" without the version 2. > > > > The decoding in GEMPAK is as simple as sending gfs.*pgrb2 to dcgrib2 > > as shown in the $NAWIPS/ldm/etc/templates/pqact.gempak_decoders.in file. > > > > Steve Chiswell > > Unidata User Support > > > > Ticket Details > > =================== > > Ticket ID: WGH-452695 > > Department: Support CONDUIT > > Priority: Normal > > Status: Closed > > > -- > Donna Cote > Senior Research Associate > The Academy for Advanced Telecommunications and Learning Technologies > Texas A&M University > 3139 TAMU > College Station, Texas 77843-3139 > Office: (979) 862-3982 > Cell: (979) 324-3549 > Fax: (979) 862-3983 > > Ticket Details =================== Ticket ID: WGH-452695 Department: Support CONDUIT Priority: Normal Status: Closed