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20000131: dcreanal, pmsl grids

Emily,

The one field in your output that doesn't show up is the vertical
coordinate name "NONE". This should be found in the
$GEMTBL/grid/vcrdgrib1.tbl table.
But, for some reason, it doesn't appear that you are getting this value.
You might try looking in $GEMTBL/grid/vcrdgrib1.tbl to make sure that 
the file doesn't have the coordinate commented out. 

The Netcdf level_desc for this grie is Sea Level which should get mapped
to vertical coordinate number 0, which should be the first entry
in the coordinate table:
000 Reserved grid level                                    NONE     0

If this line starts with a "!" or doesn't exist then that would explain your 
trouble.

Steve Chiswell
Unidata User Support


>From: Emily K Grover <address@hidden>
>Organization: .
>Keywords: 200002011849.LAA22132

>Hi Steve,
>
>You're right, I wasn't decoding into monthly files. I was able to run the
>programs that I need on the files you sent me. However, I wanted to make
>sure that I could reproduce the monthly files you sent me. I used the
>exact same command (dcreanal slp.1948.nc YYYYMM_slp.gem), but got
>different output. When I run the above command I get the following:
>
>ventisca% dcreanal slp.1948.nc 194801_slp.gem
> Changing center table to cntrgrib1.tbl
> Changing vertical coord table to vcrdgrib1.tbl
> Changing WMO parameter table to ncarncep1.tbl
> Changing center parameter table to ncarncep1.tbl
>opening 194801_slp.gem 480101/0000
> 480101/0000         PMSL                     0 -1
> 480102/0000         PMSL                     0 -1
> 480103/0000         PMSL                     0 -1
> 480104/0000         PMSL                     0 -1
> 480105/0000         PMSL                     0 -1
>
>
>When you ran dcreanal, it produced:
>
>>  Changing center table to cntrgrib1.tbl
>>  Changing vertical coord table to vcrdgrib1.tbl
>>  Changing WMO parameter table to ncarncep1.tbl
>>  Changing center parameter table to ncarncep1.tbl
>> opening 194801_slp.gem 480101/0000
>>  480101/0000         PMSL        NONE                   0          -1  
>>  480102/0000         PMSL        NONE                   0          -1
>>  480103/0000         PMSL        NONE                   0          -1
>>  480104/0000         PMSL        NONE                   0          -1
>>  480105/0000         PMSL        NONE                   0          -1
>> ...etc.
>>
>
>I ran gdinfo om the files that I created and again, I get different output
>than when run on your files. GDINFO on my monthly files gives me:
>  NUM       TIME1              TIME2           LEVL1 LEVL2  VCORD PARM
>    1     480101/0000                         ******              PMSL        
>    2     480102/0000                         ******              PMSL        
>    3     480103/0000                         ******              PMSL        
>    4     480104/0000                         ******              PMSL        
>
>GDINFO on your monthly files gives me:
>  NUM       TIME1              TIME2           LEVL1 LEVL2  VCORD PARM
>    1     480101/0000                              0         NONE PMSL        
>    2     480102/0000                              0         NONE PMSL        
>    3     480103/0000                              0         NONE PMSL        
>    4     480104/0000                              0         NONE PMSL        
>    5     480105/0000                              0         NONE PMSL        
>  
>The monthly files I create are not even the same size as the ones you
>created- they are smaller by approx 300K. Again, I am using the same
>source data and command. Do you know why this is happening?
>
>Thank you,
>Emily
>
>_________________________________________________________________________
>Emily K. Grover                                        MMMMMM     MMMMMM
>University of Michigan                           MMMMM     MMMMM
>Atmospheric, Oceanic, and Space Sciences         MMMMMM   MMMMMM
>Mesoscale Meteorology Laboratory                 MMMMMMM MMMMMMM 
>734.764.0564                                     MMMM MMMMM MMMM
>                                                 MMMM  MMM  MMMM
>                                                MMMM       MMMM
>                                               MMMMMM     MMMMMM
>_________________________________________________________________________
>
>
>On Mon, 31 Jan 2000, Unidata Support wrote:
>
>> 
>> Emily,
>> 
>> I ran dcreanal on your data as follows to create monthly files:
>> dcreanal slp.1948.nc YYYYMM_slp.gem
>> 
>> This produced:
>>  Changing center table to cntrgrib1.tbl
>>  Changing vertical coord table to vcrdgrib1.tbl
>>  Changing WMO parameter table to ncarncep1.tbl
>>  Changing center parameter table to ncarncep1.tbl
>> opening 194801_slp.gem 480101/0000
>>  480101/0000         PMSL        NONE                   0          -1
>>  480102/0000         PMSL        NONE                   0          -1
>>  480103/0000         PMSL        NONE                   0          -1
>>  480104/0000         PMSL        NONE                   0          -1
>>  480105/0000         PMSL        NONE                   0          -1
>> ...etc.
>> 
>> 
>> I was able to display these files normally.
>> 
>> At this point, I don't know why your were unsucessful. Is
>the
>above output
>> what your received? Did you decode into monthly files? Since there are 366
>> times in the file (and you can only have 200 times in a GEMPAK file), you
>> have to split it up somehow- so monthly is the easiest choice. If you have a
> ny more
>> information on how you decoded the file, let me know.
>> 
>> I'll attach the tarfile of decoded files in a separate message.
>> You can unpack the tarfile with "zcat tarfile.Z | tar xvf -"
>> 
>> Steve Chiswell
>> Unidata User SUpport
>> 
>> 
>> 
>> 
>