Scheduled Downtime
On Friday 21 April 2023 @ 5pm MT, this website will be down for maintenance and expected to return online the morning of 24 April 2023 at the latest

Can you run 4DVar assimilation tutorial case from User's Guide?


New member
Hello everyone. I compiled WPS, WRF, then WRFPLUS and WRFDA (last available versions) (get respectively execution in folders), set evironment variables (WPS_DIR,WRF_DIR etc.). But when I trying do 4Dvar assimilation from User's Guide case it dropped at first time step (2008-02-05 12:00) with next error: forrtl: severe (174): SIGSEGV. Before run I set ulimit -s and -c unlimited. In namelist set use_theta_m=0, force_use_old_data=true,hybrid_opt = 0. So several question: compilation wrf (and wrfplus, wrfda) with double precision need? how to set up this
2.standart namelist, which included in .tar files for this case need to edit or not? what mandatory options have to be there