It does seem like, ultimately, that is the point, after all. Is there some setting I don't know about?
PS: The only way I've found so far is to nest a global run, but EMS has trouble with more than one nest in a global run, so I am resolution limited (I can't make enough nests to get fine resolution):
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patti@OS121:~/00_GCMs/EMS_WRF/wrfems/runs/Global005> csh patti@OS121-> ls -l grib total 50920 -rw-r--r-- 1 patti users 52140194 Feb 8 19:04 gfsanl_4_20120707_0000_000.grb2 patti@OS121-> source ../../EMS.cshrc patti@OS121-> ems_prep --dset fnl --local --date 20120707 --cycle 00 --length 72 --analysis && ems_run WRF EMS Program ems_prep (V18.104.22.168.45.beta) started on OS121 at Sat Feb 9 03:07:05 2013 UTC The WRF EMS Says: "Who's Awesome? You're Awesome!" I. WRF EMS ems_prep Model Initialization Summary Initialization Start Time : Sat Jul 7 00:00:00 2012 UTC Initialization End Time : Tue Jul 10 00:00:00 2012 UTC Initialization Data Set : fnl Static Surface Data Sets : None Land Surface Data Sets : None This is a GLOBAL simulation - Going global! II. Search out requested files for WRF model initialization * Locating fnl files for model initial conditions * All requested fnl files are available for model initialization Excellent! - Your master plan is working! III. Create the WPS ARW intermediate format files * Processing fnl files for use as model initial conditions - Excellent!! ARW core intermediate file processing completed in 12.5 seconds IV. Horizontal interpolation of the intermediate files to the computational domain * Metgrid processed files are located in /home/patti/00_GCMs/EMS_WRF/wrfems/runs/Global005/wpsprd Horizontal interpolation to computational domain completed in 7.99 seconds WRF EMS Program ems_prep completed at Sat Feb 9 03:07:26 2013 UTC Use of qw(...) as parentheses is deprecated at /home/patti/00_GCMs/EMS_WRF/wrfems/strc/ems_run/Run_cfgarw.pm line 431. Use of qw(...) as parentheses is deprecated at /home/patti/00_GCMs/EMS_WRF/wrfems/strc/ems_run/Run_cfgnmm.pm line 350. WRF EMS Program ems_run (V22.214.171.124.45.beta) started on OS121 at Sat Feb 9 03:07:27 2013 UTC The WRF EMS Says: "Who's Awesome? You're Awesome!" I. Preforming configuration in preparation for your EMS experience * You are running the WRF ARW core global domain. Hey Ho! Let's go - GLOBAL model'n! * Simulation start and end times: Domain Start End 1 2012-07-07_00:00:00 2012-07-10_00:00:00 * Simulation length will be 72 hours * Large timestep to be used for this simulation is 196.3 seconds II. Creating the initial and boundary condition files for the user domain(s) * The WRF REAL program shall be run on the following systems and processors: 6 processors on OS121 (8 tiles per processor) * Creating the WRF global initial condition file * WRF initial and boundary conditions successfully created in 32 seconds Moving on to bigger and better delusions of grandeur III. Running ARW WRF while thinking happy thoughts * The WRF ARW core shall be run on the following systems and processors: 6 processors on OS121 (8 tiles per processor) * Run Output Frequency Primary wrfout Aux File 1 --------------------------------------------------- Domain 01 : 1 hour Off * Runnning your simulation with enthusiasm! You can sing along to the progress of the simulation while watching: % tail -f /home/patti/00_GCMs/EMS_WRF/wrfems/runs/Global005/rsl.out.0000 Unless you have something better to do with your time