<p>Hi<br>   I&#39;ve try use auxhist to output some vars. First, I edited the Registry.EM file like this:<br> <br>state    real   u              ikjb     dyn_em      2         X     \<br>     i0rh05usdf=(bdy_interp:dt)       &quot;U&quot;                      &quot;x-wind component&quot;   &quot;m s-1&quot;<br>
state    real   v              ikjb     dyn_em      2         Y     \<br>     i0rh05usdf=(bdy_interp:dt)        &quot;V&quot;                     &quot;y-wind component&quot;   &quot;m s-1&quot;<br>state    real   w              ikjb     dyn_em      2         Z     \<br>
        irh05usdf=(bdy_interp:dt)  &quot;w&quot;                          &quot;z-wind component&quot;   &quot;m s-1&quot;<br> <br>I modified rh to rh05 and recompiled the wrf (./compile em_real) successfully. <br>Then the namelist.input was edited like this:<br>
 <br>&amp;time_control<br> run_days                            = 4,<br> run_hours                           = 00,<br> run_minutes                         = 0,<br> run_seconds                         = 0,<br> start_year                          = 2001, 2001, 2001, 2001,<br>
 start_month                         = 07,   07,   07, 07,<br> start_day                           = 23,   23,   23, 23,<br> start_hour                          = 18,   18,   18, 18,<br> start_minute                        = 00,   00,   00, 00,<br>
 start_second                        = 00,   00,   00, 00,<br> end_year                            = 2001, 2001, 2001, 2001,<br> end_month                           = 07,   07,   07, 07,<br> end_day                             = 27,   27,   27, 27,<br>
 end_hour                            = 18,   18,   18, 18,<br> end_minute                          = 00,   00,   00, 00,<br> end_second                          = 00,   00,   00, 00,<br> interval_seconds                    = 21600<br>
 input_from_file                     = .true.,.false.,.false.,.false.,<br> history_interval                    = 10,  10,   10, 10,<br> frames_per_outfile                  = 1000, 1000, 1000, 1000,<br> restart                             = .false.,<br>
 restart_interval                    = 5000,<br> io_form_history                     = 2<br> io_form_restart                     = 2<br> io_form_input                       = 2<br> io_form_boundary                    = 2<br>
 auxhist5_interval                   = 10,  5,  5,  1,<br> io_form_auxhist5                    = 2<br> auxhist5_begin_y                    = 2001, 2001, 2001, 2001,<br> auxhist5_begin_m                    = 07,   07,   07, 07,<br>
 auxhist5_begin_d                    = 23,   23,   23, 23,<br> auxhist5_begin_h                    = 18,   18,   18, 18,<br> auxhist5_end_y                      = 2001, 2001, 2001, 2001,<br> auxhist5_end_m                      = 07,   07,   07, 07,<br>
 auxhist5_end_d                      = 27,   27,   27, 27,<br> auxhist5_end_h                      = 18,   18,   18, 18,<br> frames_per_auxhist5                 = 9000, 9000, 9000, 9000,<br> debug_level                         = 0<br>
 /<br> &amp;domains<br> time_step                           = 324,<br> time_step_fract_num                 = 0,<br> time_step_fract_den                 = 1,<br> max_dom                             = 4,<br> e_we                                = 44,       76,      142,      199,<br>
 e_sn                                = 33,       55,       97,      124,<br> e_vert                              = 35,       35,       35,       35,<br> p_top_requested                     = 5000,<br> num_metgrid_levels                  = 27,<br>
 num_metgrid_soil_levels             = 2,<br> dx                                  = 54000, 18000,  6000, 2000,<br> dy                                  = 54000, 18000,  6000, 2000,<br> grid_id                             = 1,     2,     3,   4,<br>
 parent_id                           = 1,     1,     2,   3,<br> i_parent_start                      = 1,     10,    15,  40,<br> j_parent_start                      = 1,     8,    12,   29,<br> parent_grid_ratio                   = 1,     3,     3,    3,<br>
 parent_time_step_ratio              = 1,     3,     3,    3,<br> feedback                            = 1,<br> smooth_option                       = 0<br> /<br> &amp;physics<br> mp_physics                          = 4,     4,     8,   8,<br>
 ra_lw_physics                       = 4,     4,     4,   4,<br> ra_sw_physics                       = 4,     4,     4,   4,<br> radt                                = 60,    60,    60,   60,<br> sf_sfclay_physics                   = 2,     2,     2,   2,<br>
 sf_surface_physics                  = 2,     2,     2,   2,<br> bl_pbl_physics                      = 2,     2,     2,   2,<br> bldt                                = 0,     0,     0,   0,<br> cu_physics                          = 1,     1,     0,   0,<br>
 cudt                                = 0,     0,     0,   0,<br> isfflx                              = 1,<br> ifsnow                              = 0,<br> icloud                              = 1,<br> surface_input_source                = 1,<br>
 num_soil_layers                     = 4,<br> sf_urban_physics                    = 0,     0,     0,   0,<br> maxiens                             = 1,<br> maxens                              = 3,<br> maxens2                             = 3,<br>
 maxens3                             = 16,<br> ensdim                              = 144,<br> /<br> &amp;fdda<br> /<br> &amp;dynamics<br> w_damping                           = 0,<br> diff_opt                            = 1,<br>
 km_opt                              = 4,<br> diff_6th_opt                        = 0,      0,      0,  0,<br> diff_6th_factor                     = 0.12,   0.12,   0.12, 0.12,<br> base_temp                           = 290.<br>
 damp_opt                            = 0,<br> zdamp                               = 5000.,  5000.,  5000., 5000.,<br> dampcoef                            = 0.2,    0.2,    0.2,  0.2,<br> khdif                               = 0,      0,      0,  0,<br>
 kvdif                               = 0,      0,      0,  0,<br> non_hydrostatic                     = .true., .true., .true., .true.,<br> moist_adv_opt                       = 1,      1,      1,     1,<br> scalar_adv_opt                      = 1,      1,      1,     1,<br>
 /<br> &amp;bdy_control<br> spec_bdy_width                      = 5,<br> spec_zone                           = 1,<br> relax_zone                          = 4,<br> specified                           = .true., .false.,.false.,.false.,<br>
 nested                              = .false., .true., .true.,.true.,<br> /<br> &amp;grib2<br> /<br> &amp;namelist_quilt<br> nio_tasks_per_group = 0,<br> nio_groups = 1,<br> /</p>
<p>I hope get a file like auxhist5_d4_2001-07-23_18:00:00, which contain u,v,w but there nothing. <br>I mean the wrf couldn&#39;t generate any auxhist files! <br>I want know how to solve this problem. <br>Besides, I can complete wrf with the namelist.input and get wrfout_d04_2001-07-23_18:00:00 successfully.<br>
My system is centos5 with PGI FORTRAN 9.0 and Openmpi 1.4, the wrf version is 3.2<br>Thanks!<br> <br>Yu Zhang</p>