Surface Divergence

[Steve Chiswell]

Chris,

Try setting SCALE=999 to let GEMPAK scale the data rather than
trying to plot values on the order of E-10 (or set SCALE to
an appropriate order of magnitude once you have a feeling of the typical
data range).

With CINT = blank as you have, the package will try to create around 16
contour
levels, but in a loop of times, consistent scaling and contour intervals
is best.

Steve Chiswell
Unidata User Support 


On Tue, 2007-04-17 at 19:23 -0230, Chris Lander wrote:
> I'm trying to display surface divergence and convergence (technically 
> speaking it is at 10m) from the CMC Regional model. Can someone look at 
> my restore file and tell me what I am doing wrong?  All I get when it 
> plots is a lot contours with a value of -2.9E-10.  What I am looking for 
> is a contour plot highlighting areas of maximum convergence and 
> divergence at the surface.
> 
> Regards
> Chris
> 
> 
> plain text document attachment (sfc_div)
> !
> ! Restore File : sfc_div
> !                Surface divergence for the CMC Regional model
> !
> ! Log:
> ! J.W. Carr/HPC 	 4/98	Initial creation
> !
> GDATTIM fall
> GLEVEL  10
> GVCORD  hght
> PANEL   0                                                                       
> SKIP    0
> SCALE   0
> GDPFUN  div(wnd)
> TYPE    c
> CONTUR  1      
> CINT    
> LINE    4/1/1         
> FINT    
> FLINE   
> HILO                                                                            
> HLSYM                                                                           
> CLRBAR                                                                         
> WIND    18/1/1
> REFVEC                                                                          
> TITLE   32/-1/~ @ Surface Divergence!
> TEXT    1/21//hw                                                                
> CLEAR   yes                                                                     
> STNPLT                                                                          
> SATFIL                                                                          
> RADFIL                                                                          
> STREAM                                                                          
> POSN    4                                                                       
> COLORS  2                                                                       
> MARKER  2                                                                       
> GRDLBL  5                                                                       
> LUTFIL  none
> FILTER  yes
-- 
Steve Chiswell <chiz at unidata.ucar.edu>
Unidata