<p><b>xinzhang</b> 2008-11-04 09:19:38 -0700 (Tue, 04 Nov 2008)</p><p> Update chapter 6<br>
</p><hr noshade><pre><font color="gray">Modified: trunk/wrf/UsersGuide/users_guide_chap6.doc
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--- trunk/wrf/UsersGuide/users_guide_chap6.doc 2008-10-27 21:39:44 UTC (rev 121)
+++ trunk/wrf/UsersGuide/users_guide_chap6.doc 2008-11-04 16:19:38 UTC (rev 122)
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It is important to include forecast differences from at least 00Z and 12Z through the period, to remove the diurnal cycle (i.e. do not run gen_be using just 00Z or 12Z model perturbations alone).
-The inputs to gen_be are NetCDF WRF forecast output ("wrfout") files at specified forecast ranges. To avoid unnecessary large single data files, it is assumed that all forecast ranges are output to separate files. For example, if we wish to calculate BE statistics using the NMC-method with (T+24)-(T+12) forecast differences (default for regional) then by setting the WRF namelist.input options history_interval=12, and frames_per_outfile=1 we get the necessary output datasets. Then the forecast output files should be arranged as follows: directory name is the forecast initial time, time info in the file name is the forecast valid time. 2007010100/wrfout_d01_2007-01-01_12:00:00 mean a 12-hour forecast valid at 2007010112 initialized at 2007010100.
+The inputs to gen_b!
e are NetCDF WRF forecast output ("wrfout") files at specified forecast ranges. To avoid unnecessary large single data files, it is assumed that all forecast ranges are output to separate files. For example, if we wish to calculate BE statistics using the NMC-method with (T+24)-(T+12) forecast differences (default for regional) then by setting the WRF namelist.input options history_interval=720, and frames_per_outfile=1 we get the necessary output datasets. Then the forecast output files should be arranged as follows: directory name is the forecast initial time, time info in the file name is the forecast valid time. 2007010100/wrfout_d01_2007-01-01_12:00:00 mean a 12-hour forecast valid at 2007010112 initialized at 2007010100.
Example directory/files structure for a CON200 domain (45 x 45 x 28 gridpoints):
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-WRF-ARW V3: Users Guide 6- PAGE 4
+WRF-ARW V3: Users Guide 6- PAGE 22
-WRF-ARW V3: Users Guide 6- PAGE 5
+WRF-ARW V3: Users Guide 6- PAGE 1
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