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Create the new grids with GDVINT

% gdvint

GEMPAK-GDVINT>l                   
 GDFILE   = $HDS/96030312_eta.gem
 GDOUTF   = eta_theta.grd
 GDATTIM  = f000
 GVCORD   = pres/thta
 GLEVEL   = 280-350-5             
 MAXGRD   = 2000
 GAREA    = @1;1;93;65
 VCOORD   = pres;none;trop;maxw;sgma
 GEMPAK-GDVINT>r                  
       
Creating process: gplt for queue 102
 PRES         found. 
 TMPK         found. 
 HGHT         found. 
 OMEGA        found. 
 UREL         found. 
 VREL         found. 
 RELH         found. 
 AVOR         found. 
  Interpolation is done.  No errors. 
 Parameters requested: GDFILE,GDOUTF,GDATTIM,GVCORD,GLEVEL,MAXGRD,GAREA,
 VCOORD.
 GEMPAK-GDVINT>e

Now use GDINFO to look at the grids on the 300K surface

  NUM       TIME1              TIME2           LEVL1 LEVL2  VCORD PARM
   80     960303/1200F000                        300         THTA PRES        
   81     960303/1200F000                        300         THTA PSYM        
   82     960303/1200F000                        300         THTA OMEGA       
   83     960303/1200F000                        300         THTA UREL        
   84     960303/1200F000                        300         THTA VREL        
   85     960303/1200F000                        300         THTA SPFH        
   86     960303/1200F000                        300         THTA AVOR        





There are some new parameters in our grid file.
PSYM is Montgomery stream function divided by 100, SPFH is specific humidity.



 




    

     

      

         
      
     
     

      

         
      
     
     

      

         
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