20010706: gempak max/min decoding

>From: "Arthur A. Person" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200107062036.f66Ka5102477

>Hi...
>
>Can you tell me what max/min temperatures the gempak decoders decode?  It
>looks like only the 24-hour 4-group max/mins are decoded... are the 1 and
>2 groups (6-hourly) not decoded?
>
>                                         Thanks.
>
>                                           Art.
>
>Arthur A. Person
>Research Assistant, System Administrator
>Penn State Department of Meteorology
>email:  address@hidden, phone:  814-863-1563
>

Art,

Dcmetr does decode the 1 & 2 groups into T6XC and T6NC 
(the $GEMPAK/source/bridge/mt/mtmmt6.f routine). The daily
max/min are TDXC and TDNC respectively. The parameters 
stored by dcmetr are in $GEMTBL/pack/metar.pack

For example:
 SFFILE   = metar
 AREA     = @cos
 DATTIM   = all
 SFPARM   = tdxc;tdnc;t6xc;t6nc
 OUTPUT   = t
 IDNTYP   = stid
 GEMPAK-SFLIST>r
 PARM = TDXC;TDNC;T6XC;T6NC                                                     
 

    STN    YYMMDD/HHMM      TDXC     TDNC     T6XC     T6NC
    COS    010706/0000  -9999.00 -9999.00    34.40    27.80
    COS    010706/0100  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/0200  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/0300  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/0400  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/0500  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/0600  -9999.00 -9999.00    31.10    22.20
    COS    010706/0700     34.40    16.10 -9999.00 -9999.00
    COS    010706/0800  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/0900  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/1000  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/1100  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/1200  -9999.00 -9999.00    22.80    16.10
    COS    010706/1300  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/1400  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/1500  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/1600  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/1700  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/1800  -9999.00 -9999.00    32.80    17.20
    COS    010706/1900  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/2000  -9999.00 -9999.00 -9999.00 -9999.00
    COS    010706/2100  -9999.00 -9999.00 -9999.00 -9999.00

Steve Chiswell
Unidata User Support
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