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[GEMPAK #QEJ-861814]: GEMPAK - Date/Time Ranges in GDGRIB
- Subject: [GEMPAK #QEJ-861814]: GEMPAK - Date/Time Ranges in GDGRIB
- Date: Fri, 21 Sep 2007 16:14:10 -0600
Christopher,
What version are you running? It sounds like a GDDIAG bug in creating the name
since it should be TMXK.
I ran it here and got TMXK and nothing like " E", so I think you are there
if we
can get this knocked out.
Steve Chiswell
Unidata User Support
> Steve,
>
> I feel like I am ever so close. Here is what I have for GDDIAG and GDGRIB for
> my NARR-A files.
>
> GDDIAG:
>
> GDFILE Grid file
> stat_north_sector_1000_tmpk_t0.grid
> GDOUTF Output grid file
> time_north_sector_1000_tmpk_t0.grid
> GFUNC Scalar grid MAXTMPK
> GDATTIM Grid date/time 971116/1200F000:060224/1200F000
> GLEVEL Grid level 1000
> GVCORD Grid vertical coordinate PRES
> GRDNAM Grid parameter name tmxk^060224/1200
> GRDTYP Diagnostic grid type (Scalar/Vec S
> GPACK Packing type/number of bits none
> GRDHDR Grid Header Flags
> PROJ Map projection/angles/margins|dr LCC
> GRDAREA Area covered by grid
> KXKY Number of grid points in x;y
> MAXGRD Maximum number of grids
> CPYFIL Grid file whose navigation is to narra_221_20001230_1800.grid
> ANLYSS Grid analysis block 4/2;2;2;2
> Parameters requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GRDTYP,GPACK,GRDHDR,PROJ,GRDAREA,KXKY,MAXGRD,CPYFIL,ANLYSS.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
> GEMPAK-GDDIAG> GEMPAK-GDDIAG>
> TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
> 060224/1200 1000 PRES TMXK
> Enter a new grid parameter name, <cr> to accept or type EXIT: Parameters
> requested: GDFILE,GDOUTF,GFUNC,GDATTIM,GLEVEL,GVCORD,GRDNAM,
> GRDTYP,GPACK,GRDHDR,PROJ,GRDAREA,KXKY,MAXGRD,CPYFIL,ANLYSS.
> GEMPAK-GDDIAG> GEMPAK-GDDIAG>Creating process: gplt for queue 1422032896
>
>
> GDGRIB:
>
> GDFILE Grid file
> time_north_sector_1000_tmpk_t0.grid
> GFUNC Scalar grid TMXK
> GDATTIM Grid date/time 060224/1200
> GLEVEL Grid level 1000
> GVCORD Grid vertical coordinate PRES
> GBTBLS Input GRIB decoding tables wmogrib131.tbl
> GBFILE GRIB data file name finished.grb
> VERCEN PDS byte_4/byte_5/byte_6/byte_26
> PDSVAL GRIB PDS grid identifier overrid tmxk^20060224/1200
> PRECSN Packing precision
> WMOHDR WMO_ID/Origin_ID/DDHHMM
> CPYFIL Grid file whose navigation is to narra_221_20001230_1800.grid
> PROJ Map projection/angles/margins|dr LCC
> GRDAREA Area covered by grid
> KXKY Number of grid points in x;y
> Parameters requested: GDFILE,GFUNC,GDATTIM,GLEVEL,GVCORD,GBTBLS,GBFILE,
> VERCEN,PDSVAL,PRECSN,WMOHDR,CPYFIL,PROJ,GRDAREA,KXKY.
> GEMPAK-GDGRIB> GEMPAK-GDGRIB> GEMPAK-GDGRIB> GEMPAK-GDGRIB> GEMPAK-GDGRIB>
> GEMPAK-GDGRIB> GEMPAK-GDGRIB> GEMPAK-GDGRIB> GEMPAK-GDGRIB> GEMPAK-GDGRIB>
> GEMPAK-GDGRIB> [DG -7] Input grid TMXK ^060224/1200 @1000 %PRES cannot be
> found.
> Parameters requested: GDFILE,GFUNC,GDATTIM,GLEVEL,GVCORD,GBTBLS,GBFILE,
> VERCEN,PDSVAL,PRECSN,WMOHDR,CPYFIL,PROJ,GRDAREA,KXKY.
>
> I have used GDINFO to look at the grid file after running GDDIAG and it
> produces this result:
>
> GDINFO:
>
> Number of grids in file: 1
>
> Maximum number of grids in file: 400
>
> NUM TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
> 1 060224/1200 1000 PRES E
> Parameters requested: GDFILE,LSTALL,OUTPUT,GDATTIM,GLEVEL,GVCORD,GFUNC.
>
>
> If you notice, the PARM does not seem to show up correctly and instead had
> "four spaces" then E. When I replace gdfunc in GDGRIB from TMXK to "four
> spaces" and E a grib file is produced, however it contains no data. Am I
> defining something incorrectly or using GDDIAG incorrectly? If you have a
> chance let me know. Thanks.
>
> --Chris
>
>
> ----- Original Message -----
> From: "Unidata GEMPAK Support" <address@hidden>
> To: address@hidden
> Cc: address@hidden
> Sent: Wednesday, September 19, 2007 4:19:04 PM (GMT-0500) America/New_York
> Subject: [GEMPAK #QEJ-861814]: GEMPAK - Date/Time Ranges in GDGRIB
>
> > Steve,
> >
> > I have managed to convert individual NARR-A GEMPAK grid files to grib
> > format and it loads perfectly in IDV. However, my goal is to convert GEMPAK
> > grids that have been averaged using GDSTAT and convert those files to
> > gribs. These averaged files as you know have a date/time range to them
> > indead of a single data/time period. Here are the two approaches I have
> > used to define the date/time:
> >
> > GDATTIM= 971116/1200F000-060224/1200F000
> >
> > GDATTIM= 971116/1200F000:060224/1200F000
> >
> >
> > Here is my output from GDINFO showing the times.
> >
> > NUM TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
> > 1 971116/1200F000 060224/1200F000 1000 PRES MAXTMPK
> > 2 971116/1200F000 060224/1200F000 1000 PRES MINTMPK
> > 3 971116/1200F000 060224/1200F000 1000 PRES AVETMPK
> > 4 971116/1200F000 060224/1200F000 1000 PRES SDVTMPK
> > 5 971116/1200F000 060224/1200F000 1000 PRES CNTTMPK
> > Parameters requested: GDFILE,LSTALL,OUTPUT,GDATTIM,GLEVEL,GVCORD,GFUNC.
> >
> >
> > Is there another way of listing date/time ranges for GDGRIB?
> >
> >
> > --Chris Warren
> >
> >
> > Christopher Warren
> > Graduate Research Assistant
> > Plymouth State University
> > Plymouth, NH 03264
> > Email: cjwarren1@mail.plymouth
> >
> >
> Chris,
>
> The PDSVAL parameter can be used to set the parameter name, level, time to be
> used,
> however, the time interval for your average if much largetr than an hourly
> value
> like P06M for example.
>
> The easiest solution to get the parameter to grib would be to use GDDIAG and
> convert the MAXTMPK for that time interval to the TMXK parameter
> (as defined in $GEMTBL/grid/wmogrib2.tbl parameter #15) such as:
> GFUNC = maxtmpk
> GDATTIM = 971116/1200f000:060224/1200f000
> GLEVEL = 1000
> GVCORD = pres
> GRDNAM = tmxk^060224/1200
> GRDTYP = s
> GPACK = none
> GRDHDR =
>
>
> Then use GDGRIB to convert the TMXK to grib.
>
> I don't have a good way to encode the time period of gdtat into the grib
> without doing some direct bit writing in the PDS block. The above use of
> the single time in GRDNAM in gddiag gets around having to work
> with the time ranges.
>
> Steve Chiswell
> Unidata User Support
>
>
> Ticket Details
> ===================
> Ticket ID: QEJ-861814
> Department: Support GEMPAK
> Priority: Normal
> Status: Closed
>
>
>
Ticket Details
===================
Ticket ID: QEJ-861814
Department: Support GEMPAK
Priority: Normal
Status: Closed