Re: Surface Divergence

• To: chiz@xxxxxxxx, Gembud <gembud@xxxxxxxxxxxxxxxx>
• Subject: Re: Surface Divergence
• From: Chris Lander <clander@xxxxxxxxxxxxx>
• Date: Tue, 17 Apr 2007 20:31:11 -0230

Thanks to everyone who responded,

Chris


Steve Chiswell wrote:

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

• References:
  • Surface Divergence
    • From: Chris Lander
  • Re: Surface Divergence
    • From: Steve Chiswell