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19990329: updating upperair station info for GARP

David,

The problem should be that Garp is finding 71896 for YXS in the gempak
file rather than 71908 since there is an entry for that station in the
upperair snworld.tbl (and snstns.tbl) files that dcuair uses to create
the file.

When Garp goes to plot YXS, it uses area=@YXS in the equivalent to snprof,
and it finds that the upperair file was created with a location for
YXS/71896- and this location is empty.

To remedy this problem, edit your snworld.tbl/snstns.tbl $GEMTBL/stns
file so that new upperair files won't have 71896 defined as YXS, eg:
YXS       71908 PRINCE GEORGE ARPT (was 71896)   BC CN  5390 -12280   601
          71896 PRINCE GEORGE ARPT               BC CN  5388 -12268   691

Now, you can use the snstns program to update the station information for
your previously decoded files using idntyp=stnm (station number).

When you update the station information by number, the YXS id for 71896 will
be overwritten by the "      " stid.

When you go to plot the upperair data in Garp now, and the table specifies
YXS, it will use the 71908 area and find the data.

Steve Chiswell
Unidata User Support


>From: David Ovens <address@hidden>
>Organization: .
>Keywords: 199903291649.JAA17225

>Hello Unidata,
>
>I was informed of a change in YXS (71908) station location by a member
>of our department, Ernie Recker.  I have been able to make changes so
>that dcuair can decode station 71908 and so that GEMPAK programs such
>as snlist and snprof work with it:
>
> GEMPAK-SNLIST>area = @yxs
> GEMPAK-SNLIST>r
>
> SNPARM = PRES;TEMP;DWPT;DRCT;SPED;HGHT                                       
>   
> STNPRM = SHOW                                                                
>   
>
> STID = YXS           STNM =    71908   TIME = 990329/1200         
> SLAT =  53.90     SLON =  -122.80   SELV =   601.0
> STIM =  1200
>
>This I accomplished by editing $GEMTBL/stns/snstns.tbl and
>snworld.tbl.  Unfortunately, I cannot seem to get GARP to work with
>this.  
>
>I tried updating $NAWIPS/garp/tables/snstns.tbl, and I can see
>that changes there do affect the menu I see under "Upper-Air Vertical
>Profile", but something is still wrong because GARP does not display
>anything for that station.  I successfully added RKJJ, Kwangju, Korea,
>to garp/tables/snstns.tbl and got it to display properly in GARP, but
>my change to YXS is unsuccessful.  Is there some other look-up table
>or some pre-compiled version of this table that I need to update?
>
>Thank you for any help on this baffling problem.
>
>David
>
>P.S. Here are some more details:
>Garp version: 2.01
>Gempak version: 5.4
>$GEMTBL/stns/snstns.tbl entry:
>YXS   71908 PRINCE GEORGE                    BC CN  5390 -12280   601  1
>$NAWIPS/garp/tables/snstns.tbl entries:
>...
>REV   72489 RENO                             NV US  3957 -11979  1515  1
>RKJJ  47158 KWANGJU (KOR-AF                     KO  3511  12682    13  1
>RIW   72672 RIVERTON                         WY US  4301 -10850  1703  1
>...
>YXE   71866 SASKATOON AIRPO                  SA CN  5217 -10668   504  1
>YXS   71908 PRINCE GEORGE                    BC CN  5390 -12280   601  1
>YXY   71964 WHITEHORSE                       YK CN  6072 -13507   703  1
>
>
>-- 
>
>David Ovens            e-mail: address@hidden
>(206) 685-8108
>Dept of Atmospheric Sciences, Box 351640
>University of Washington 
>Seattle, WA  98195
>