Gembuds,
I have converted some sigma level data (from MM5 output) into pressure
level data using gdvint as follows:
GDFILE = outfile2
GDOUTF = outfile2
GDATTIM = LAST
GLEVEL = 1000-900-10
GVCORD = sgma:100/pres
MAXGRD = 600
GAREA = grid
VCOORD = pres;none
$respond=yes
run
GLEVEL = 875-750-25
run
GLEVEL = 700-100-50
run
GLEVEL = 1050-1010-10
run
exit
This mostly works great with SPFH (specific humidity) appearing as the
moisture value -- the original sigma levels had TMPK and DWPK at all
levels and had both of those at level 0 %NONE.
In gdprof, I can plot TMPK (UWND, VWND, PRES, etc.) all the way down
below 1000 mb using
GVCORD = pres
YAXIS = 1050/400/50/;1
The text output snippet for TMPK is
PRES TMPK
1020.28 278.679
1000.00 277.595
990.00 277.818
but for DWPK, it stops at 1000 mb
PRES DWPK
1000.00 270.792
990.00 269.367
I think there is some problem in calculating DWPK from TMPK and SPFH
below 1000 mb and that is why gdprof does not want to display this. I
think this is probably a failing in gdvint since I do not see
DWPK@0%PRES -- I only see TMPK, HGHT, PRES, UWND, UREL, SPFH, WWND
@0 %PRES -- even though I had TMPK and DWPK at 0%NONE.
Has anyone figured out how to work around this either in gdvint or
gdprof?
David
--
David Ovens e-mail: ovens@xxxxxxxxxxxxxxxxxxxx
Research Meteorologist phone: (206) 685-8108
Dept of Atm. Sciences plan: Real-time MM5 forecasting for the
Box 351640 Pacific Northwest
University of Washington http://www.atmos.washington.edu/mm5rt
Seattle, WA 98195 Weather Graphics and Loops
http://www.atmos.washington.edu/~ovens/loops
