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200013: 20000102: y2k problem in dcgrib?


David,

The changes up to PL12 required changes in the gemlib routines
which mean that everything has to be recompiled and relinked.
Array sizes etc were changed which throws off the common blocks,
so I felt the best solution was a complete repackaging. The addition
of those PC operating systems required enough changes so that
simply extracting patches would be a mess since every makefile 
was changed as well.

I can  extract just the $NAWIPS/unidata/ldmbridge/dcgrib tree
for you ....or make do as you already are.
Using the YYMMDDHH templates os more critical witth dchrly and dcuair
to filter out bad  wmo headers. Generally not a problem with gribs...
except you have to have that pqact patch for :yy of course.

Steve Chiswell
Unidata User Support


>From: "David J. Knight" <address@hidden>
>Organization: .
>Keywords: 200001031607.JAA02153

>Chiz,
>     I'm using gempak5.4, but not the pl12
>version (OK I'm guilty of being a little
>behind - just hate to go through effort
>of moving our local customizations to the
>newer version - we are up to patch level 6 though ;)
>Was there ever a pl7-11???
>
>I've found that (\1:yy)(\1:mm) seems to work fine.
>Not the best solution, but OK for now. Guess
>I'll go to pl12 when time allows.
>
>Thanks
>David
>
>
>> 
>> >From: "David J. Knight" <address@hidden>
>> >Organization: .
>> >Keywords: 200001021552.IAA05285
>> 
>> >Hi,
>> >     There is an apparent y2k problem with decoding hds
>> >feed into gempak files.
>> >
>> >I have entries like
>> >HRS     ^H.[I-P]... KWB. ([0-3][0-9])([0-2][0-9]).*
>> >        PIPE    /unidata/gempak5.4/bin/sol/dcgrib
>> >                -vx -d /unidata/logs/avn.dcgrib.log
>> >                -g /unidata/gempak5.4/gempak5.4/tables
>> >                -q "lin,dlat=2.5,dlon=2.5"
>> >                PACK    gempak/hds/YYMMDDHH_avn.gem
>> >
>> >in my pqact.conf gile.
>> >
>> >But I am getting files created with names like:
>> >/data1/gempak/hds/100010/1_avn.gem
>> >
>> >it seems YY is 100
>> >         MM is 01
>> >         DD is 0/1
>> >and HH is gone
>> >
>> >I'll change the filing to
>> >gempak/hds/(\1:yy)(\1:mm)\1\2_avn.gem
>> >and see if that helps put things in the right place.
>> >
>> >David
>> >
>> >
>> >David Knight
>> >Department of Earth and Atmospheric Sciences   Tel: (518)-442-4204
>> >SUNYA   ES-228                                 Fax: (518)-442-4494
>> >Albany, NY  12222                              Email: knight@atmos.albany.e
> du
>> >
>> 
>> 
>> David,
>> 
>> Are you running the pl12 distribution? I use the YYYY template
>> pattern here and don't see any problems. Harry Edmond mentioned
>> your problem, but also said that it went away once he started
>> using the pl12 version (they hadn't copied the updated decoders to
>> the LDM so they were still using very old versions).
>> 
>> Steve Chiswell
>> ****************************************************************************
>> Unidata User Support                                    UCAR Unidata Program
>> (303)497-8644                                                  P.O. Box 3000
>> address@hidden                                   Boulder, CO 80307
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>> 
>