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[Datastream #YGP-795011]: synop question

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.



Gustavo,

The raw synop report is stored along with the decoded information.
You can view this in SFLIST using SFPARM=TEXT
or by adding TEXT to your list of parameters in SFPARM.

Steve Chiswell
Unidata User Support



> Dear Steve Chiswell,
> 
> Thank you for your answer. Could you tell me, using gempak,  if there is a
> way to get or view a whole synop as it’s. I mean without decoding it?
> 
> Thank you, again!
> 
> 
> Gustavo
> 
> 
> 
> >
> > The packing file for dclsfc ($GEMTBL/pack/lsfc.pack)
> > stores Daily max and min (TDXC and TDNC). The WMO region III
> > reports only decode 12 hour max/min, so they are not written to the
> > decoded file.
> > The section 333 is region specific.
> >
> > Steve Chiswell
> > Unidata User Support
> >
> >> Dear Unidata’support staff;
> >>
> >>
> >> When reading a  Surface data file (this is a synop file) variables like
> >>
> >> T6XC - Maximum 6-hour temperature in Celsius
> >> T6NC - Minimum 6-hour temperature in Celsius
> >> T6XF - Maximum 6-hour temperature in Fahrenheit
> >>
> >> It seems there is a problem. See for instance:
> >>
> >> SFFILE    Surface data file
> >> /data/ldm/gempak/syn/20061129_syn.gem
> >> AREA      Data area                         SAEZ **
> >> DATTIM    Date/time                         ALL
> >> SFPARM    Surface parameter list            T6XF
> >> OUTPUT    Output device/filename
> >> IDNTYP    STNM or STID                      STID
> >> GEMPAK-SFLIST>
> >> GEMPAK-SFLIST>
> >> GEMPAK-SFLIST>r
> >> [SFLIST 1]  Parameter T6XF is not computable.
> >> [SFLIST -4]  No valid computable parameters.
> >> Parameters requested: SFFILE,AREA,DATTIM,SFPARM,OUTPUT,IDNTYP.
> >>
> >> It can be there is a problem when reading maximum and minimum
> >> temperatures?
> >>
> >> Thank you!
> >>
> >> Gustavo Pittaluga
> >>
> >>
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: YGP-795011
> > Department: Support GEMPAK
> > Priority: Normal
> > Status: Closed
> >
> >
> > --
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> >
> >
> 
> 


Ticket Details
===================
Ticket ID: YGP-795011
Department: Support GEMPAK
Priority: Normal
Status: Closed