You're seeing that because the model grid itself has certain projection.� It has nothing to do with how Grads is interpreting the data.� This is a WRF thing.� It doesn't look like a Lambert Conformal Conic projection, however, because I think if you do "set mproj lambert", your data should appear to be a rectangle with parallel edges and the map behind it should be altered.� Your second figure does not show that, so perhaps you have some other projection.� I am also a WRF user, but I use the ARWpost program to convert WRF netCDF files to something Grads can read.� Since I don't use the wrf2grads program, there could be something with that program that caused the PDEF line in your control file to be something other than it is in the model.� <br>
<br>Jeff Duda<br><br><div class="gmail_quote">On Tue, Feb 8, 2011 at 10:41 AM, Fu Kai <span dir="ltr"><<a href="mailto:sdfukai@gmail.com">sdfukai@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div class="gmail_quote">
<div>Dear GrADS Users, </div>
<div>�</div>
<div>I am�beginner to�wrf and GrADS,�and want�to display the output�data of wrf using GrADS,�I used the wrf2grads program to get the ctl and dat file which are�needed by GrADS. When I tried to plot the data, there seems to be�a problem, the figure does not coincide with the lat and lon lines (Fig 1). I thought it was because the case uses a lambert projection, while the default projection used by GrADS seems to be Mercator, so I tried to�use�"set mproj lambert" in GrADS, but only get a small figure (Fig 2) which also seems not properly. Which command should I use to get a right figure.</div>
<div>�</div>
<div>Any�suggestion would be greatly appreciated.� The CTL file and the figure plotted are below.� I'm a new GrADS user, so if this is a newbie problem, I apologize in advance.</div>
<div>�</div>
<div>CTL file created by wrf2grads program: </div>
<div>�</div>
<div>dset ^wrfout_d01_2000-01-24_12:00:00.dat<br>undef 1.e35<br>pdef� 73� 60 lcc� 28.171� -93.649��� 1.000��� 1.000� 60.� 30.� -98.000� 30000.� 30000.<br>xdef� 219 linear� -94.6�� 0.13513513<br>ydef� 160 linear�� 23.6�� 0.13513513<br>
zdef�� 27 levels<br>��� 0.02849<br>��� 0.09096<br>��� 0.17899<br>��� 0.29167<br>��� 0.43435<br>��� 0.61657<br>��� 0.83989<br>��� 1.17945<br>��� 1.62939<br>��� 2.10596<br>��� 2.60960<br>��� 3.34814<br>��� 4.30997<br>��� 5.27340<br>
��� 6.23490<br>��� 7.19647<br>��� 8.16307<br>��� 9.13477<br>�� 10.11029<br>�� 11.10285<br>�� 12.13382<br>�� 13.21484<br>�� 14.34895<br>�� 15.53801<br>�� 16.78960<br>�� 18.11523<br>�� 19.52641<br>tdef�������� 5 linear 12z24jan2000� 1mn<br>
vars��� 8<br>U�������������� 27 0 U Compoment of wind<br>V�������������� 27 0 V Component of wind<br>W�������������� 27 0 W Component of wind<br>THETA���������� 27 0 Theta<br>TC������������� 27 0 Temperature in C<br>P�������������� 27 0 Pressure (HPa)<br>
Z�������������� 27 0 Height (m)<br>HGT������������ 0� 0 Terrain Height<br>endvars</div>
<div>�</div>
<div>Fig. 1. </div>
<div><img src="" title="wrfout_d01_2000-01-24_12_00_00.png" alt="wrfout_d01_2000-01-24_12_00_00.png"></div>
<div>�</div>
<div>Fig. 2.</div>
<div><img src="" title="wrfout_d01_2000-01-24_12_00_00lambert.png" alt="wrfout_d01_2000-01-24_12_00_00lambert.png"></div>
<div>�</div>
<div>Thanks in advance.</div>
<div>�</div><font color="#888888">
<div>Kai Fu</div></font></div><br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Iowa State University<br>Meteorology Graduate Student<br>3134 Agronomy Hall<br><a href="http://www.meteor.iastate.edu/~jdduda">www.meteor.iastate.edu/~jdduda</a><br>