<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">hi,<div>You set feedback to one, hence the inner nests feed back to the outer nest, and results in strange precip patterns where the grids intersect.</div><div>See the doc on 2-way nesting. Unless you have a good reason, feedback should be set to zero. At least that's my opinion!</div><div><div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><span class="Apple-style-span" style="font-family: Calibri, sans-serif; font-size: 14px; "><div>cheers,</div><div>Jatin.</div></span></div></div></div></span></span>
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<br><div><div>On 26/02/2013, at 1:18 PM, <a href="mailto:mmkamal@uwaterloo.ca">mmkamal@uwaterloo.ca</a> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi,<br><br>I run two simulation January 2002 and July 2002. I got strange pattern in the calculate total precipitation plot (RAINC + RAINNC). This pattern only appear in July simulation. I have checked the model run two times and could not find any problem. I look forward to hearing from you.<br><br><br>Thanks<br>Kamal<br><br><br><br>===================================<br>Here is my namelist.input file<br>===================================<br><br> &time_control<br> run_days = 32,<br> run_hours = 0,<br> run_minutes = 0,<br> run_seconds = 0,<br> start_year = 2002, 2002, 2002,<br> start_month = 07, 07, 07,<br> start_day = 01, 01, 01,<br> start_hour = 00, 00, 00,<br> start_minute = 00, 00, 00,<br> start_second = 00, 00, 00,<br> end_year = 2002, 2002, 2002,<br> end_month = 08, 08, 08,<br> end_day = 01, 01, 01,<br> end_hour = 00, 00, 00,<br> end_minute = 00, 00, 00,<br> end_second = 00, 00, 00,<br> interval_seconds = 10800<br> input_from_file = .true.,.true.,.true.,<br> history_interval = 180, 180, 180,<br> frames_per_outfile = 1000, 1000, 1000,<br> restart = .false.,<br> restart_interval = 28800,<br> io_form_history = 2<br> io_form_restart = 102<br> io_form_input = 2<br> io_form_boundary = 2<br> auxinput4_inname = "wrflowinp_d<domain>"<br> auxinput4_interval = 180, 180, 180,<br> io_form_auxinput4 = 2,<br> debug_level = 0<br> /<br><br> &domains<br> time_step = 48,<br> time_step_fract_num = 0,<br> time_step_fract_den = 1,<br> max_dom = 3,<br> e_we = 225, 214, 244,<br> e_sn = 175, 211, 271,<br> e_vert = 28, 28, 28,<br> p_top_requested = 10000,<br> num_metgrid_levels = 30,<br> num_metgrid_soil_levels = 4,<br> dx = 8000, 2666.666, 888.888,<br> dy = 8000, 2666.666, 888.888,<br> grid_id = 1, 2, 3,<br> parent_id = 1, 1, 2,<br> i_parent_start = 1, 68, 70,<br> j_parent_start = 1, 65, 50,<br> parent_grid_ratio = 1, 3, 3,<br> parent_time_step_ratio = 1, 3, 3,<br> feedback = 1,<br> smooth_option = 0<br> /<br><br> &physics<br> mp_physics = 6, 6, 6,<br> ra_lw_physics = 1, 1, 1,<br> ra_sw_physics = 1, 1, 1,<br> radt = 8, 8, 8,<br> sf_sfclay_physics = 1, 1, 1,<br> sf_surface_physics = 2, 2, 2,<br> bl_pbl_physics = 1, 1, 1,<br> bldt = 0, 0, 0,<br> cu_physics = 1, 0, 0,<br> cudt = 5, 5, 5,<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,<br> sst_update = 1,<br> num_land_cat = 28<br>/<br><br> &dynamics<br> rk_ord = 3,<br> diff_opt = 1,<br> km_opt = 4,<br> diff_6th_opt = 2, 2, 2,<br> diff_6th_factor = 0.06, 0.06, 0.06,<br> damp_opt = 1,<br> zdamp = 8000., 8000., 8000.,<br> dampcoef = 0.03, 0.03, 0.03,<br> w_damping = 1,<br> base_pres = 100000.,<br> base_temp = 290.<br> base_lapse = 50.,<br> iso_temp = 0.,<br> smdiv = 0.1, 0.1, 0.1,<br> emdiv = 0.01, 0.01, 0.01<br> epssm = 0.1, 0.1, 0.1<br> non_hydrostatic = .true., .true., .true.,<br> h_mom_adv_order = 5, 5, 5,<br> v_mom_adv_order = 3, 3, 3,<br> h_sca_adv_order = 5, 5, 5,<br> v_sca_adv_order = 3, 3, 3,<br> time_step_sound = 4, 4, 4,<br> moist_adv_opt = 1, 1, 1,<br> scalar_adv_opt = 1, 1, 1,<br> tke_adv_opt = 1, 1, 1,<br> khdif = 0, 0, 0,<br> kvdif = 0, 0, 0,<br><br> /<br><br> &bdy_control<br> spec_bdy_width = 5,<br> spec_zone = 1,<br> relax_zone = 4,<br> specified = .true., .false.,.false.,<br> spec_exp = 0.33,<br> nested = .false., .true., .true.,<br> /<br><br> &grib2<br> /<br><br> &namelist_quilt<br> nio_tasks_per_group = 0,<br> nio_groups = 1,<br> /<br><br><br><br><br><br><span><DAY_minus_WRF_Prcp.000003.png></span><span><DAY_minus_WRF_Prcp.000003.png></span>_______________________________________________<br>Wrf-users mailing list<br><a href="mailto:Wrf-users@ucar.edu">Wrf-users@ucar.edu</a><br>http://mailman.ucar.edu/mailman/listinfo/wrf-users<br></div></blockquote></div><br></div></body></html>