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Jennifer et al --<br>
<br>
That makes perfect sense. At 12 UTC on 18 October 2011, the NAM
went from the rotated Arakawa E-grid to the Arakawa B-grid. So LLCR
would not be appropriate to use anymore. It's still lambert
conformal, so the LLC is correct.<br>
<br>
Bill<br>
<br>
On 10/27/2011 7:53 PM, Jennifer Adams wrote:
<blockquote
cite="mid:3C3703C1-4AF7-4BBC-AE14-4439026E7758@cola.iges.org"
type="cite">I think you need to change "lccr" to "lcc" in your
PDEF entry. --Jennifer
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<div>On Oct 27, 2011, at 6:33 PM, Donald Van Dyke wrote:</div>
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<div>Hello,<br>
<br>
I'm not sure if this is a grib2 file problem or a GrADS
problem, but if I try to plot the winds from the attached
NAM grib2 file from NCEP, the wind is plotted incorrectly.
I am using g2ctl.pl with no flags and gribmap -i to
create the .ctl and .idx files. In the GrADS script, I am
using simple commands such as<br>
<br>
"set lev 250"<br>
"d mag(ugrdprs,vgrdprs)*1.943844449"<br>
"d
skip(ugrdprs*1.943844449,2,2);skip(vgrdprs*1.943844449,2,2)"<br>
<br>
The image created is attached along with an image from
NCEP showing what the winds should have looked like over
my area in the Florida Panhandle. They're obviously not
northerly. I am currently using grads.2.0.a9. I have
also attached the grib2 file as well as the .ctl file and
.idx file I created with g2ctl.pl and gribmap. Thanks.<br>
<br>
-Don<br>
<br>
<br>
<br>
<span><nam_namer_000_250_wnd_ht.gif></span><span><0.ctl></span><span><nam.t00z.awip3200.tm00.grib2></span><span><nam.t00z.awip3200.tm00.grib2.idx></span><span><nam250wind-0.png></span>_______________________________________________<br>
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<div>--</div>
<div>Jennifer M. Adams</div>
<div>IGES/COLA</div>
<div>4041 Powder Mill Road, Suite 302</div>
<div>Calverton, MD 20705</div>
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