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20001017: first guess field

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  • Subject: 20001017: first guess field
  • Date: Tue, 17 Oct 2000 10:53:37 -0600
Walker,
Your problem occurs with defining multiple levels, eg LEVELS=man.
You can work around this limitation using the csh:

%csh prompt--> foreach level ("1000" "925" "850" "700" "500" "300" "200")
oabsnd << EOF
LEVELS = $level
r

e
EOF
end


The above will loop through each of the levels, running oabsnd each time.

Steve Chiswell
Unidata User Support


On Mon, 16 Oct 2000, Walker Ashley wrote:

> Hey Chiz...
> 
> I am trying to perform a first guess in oabsnd and can't get it to work. I 
> have 
> done it before but for some reason it is not working now. Here are the 
> details.
> 
> I have created a grid 1998053000_eta211.gem. I used a ruc grid to create the 
> grid for the data. Don't mind the eta211 extension ... it has that extension 
> so 
> I can use the eta211 macros in garp. So ... I want to perform oabsnd with a 
> ruc 
> grid for a first guess. I did the following.
> 
>  GEMPAK-OABSND>l
>  SNFILE   = /cdrom/cdrom0/upperair/980530_upa.gem
>  GDFILE   = /wx/washley/surface/1998053000_eta211.gem
>  SNPARM   = hght
>  STNDEX   = 
>  LEVELS   = man
>  VCOORD   = PRES
>  DATTIM   = 980530/1200
>  DTAAREA  = data
>  GUESS    = /cdrom/cdrom0/grids/98053012_ruc.gem*980530/1200F000
>  GAMMA    = .1
>  SEARCH   = 50/EX
>  NPASS    = 2
>  
>  I run it and get:
>   OABSND PARAMETERS: 
> 
>  Output grid file:        /wx/washley/surface/1998053000_eta211.gem
>  Number of x, y points:    93    65
>  Grid bnds:     12.19  -133.46    57.29   -49.38 Grid xtnd:    0   0   0   0
>  Station spacing:           4.00
>  Guess grid file:  /cdrom/cdrom0/grids/98053012_ruc.gem
>  Guess time:  980530/1200F000
>  Sounding file:           /cdrom/cdrom0/upperair/980530_upa.gem
>  Data area:               11.00;-154.00;62.00;-48.00
>  Level parameters:        HGHT
>  Levels:                     0    1000     925     850     700     500     
> 400   
>   300
>      250     200     150     100
>  Vertical coordinate:     PRES                                                
>                     
>  Station parameters:    
>  Time:                   980530/1200         
>  GAMMA: 0.10   SEARCH:  50.00  NPASS:  2
>  Data extrapolation may occur. 
> Enter <cr> to accept parameters or type EXIT:
> 
>  Processing data at time 980530/1200         
>  [DG -7]  Input grid  cannot be found.
>  [OA -5]  Guess grid could not be found.
>  Parameters requested: SNFILE,GDFILE,SNPARM,STNDEX,LEVELS,VCOORD,DATTIM,
>  DTAAREA,GUESS,GAMMA,SEARCH,NPASS.
> 
> 
> If I run it without the first guess it works. Is there something stupid I am 
> doing wrong? Any help would be great.
> 
> Walker
>  
> 
>