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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>It seems that the problem is in lower boundary rather than upper
boundary. Also your time step seems to be bigger.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#6A737B'>Min Zhu<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#6A737B'>Meso-scale Wind Modeller<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#6A737B'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#F37421'>D</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'> </span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#6A737B'>+44 (0)1923 299 360</span><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#6A737B'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#6A737B'>RES Group, registered in England and Wales with Company Number
1589961<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#6A737B'>Registered Office: Beaufort Court, Egg Farm Lane, Kings Langley,
Hertfordshire WD4 8LR<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:16.0pt;font-family:Webdings;
color:green'>P </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:green'>please consider the environment - do you really need to print this
email?</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> wrf-users-bounces@ucar.edu
[mailto:wrf-users-bounces@ucar.edu] <b>On Behalf Of </b>Andre Pattantyus<br>
<b>Sent:</b> 04 March 2010 00:11<br>
<b>To:</b> wrf-users@ucar.edu<br>
<b>Subject:</b> [Wrf-users] Upper boundary cfl error<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hi all,<br>
<br>
I am getting these few errors at my upper boundary. Among other things, I
have tried using the new damping option, diff_opt =2, because I am using
running towards an LES in my inner domain. A solution seems easy but so far my
attempts have not yielded success. below is my namelist.<br>
<br>
<br>
3 points exceeded cfl=2 in domain d03 at time 2006-03-29_12:00:16 hours<br>
MAX AT i,j,k: 40 80 4 vert_cfl,w,d(eta)= 2.263442993
-80.54151917 0.2999961376E-02<br>
3 points exceeded cfl=2 in domain d03 at time 2006-03-29_12:00:16
hours<br>
MAX AT i,j,k: 40 80 4 vert_cfl,w,d(eta)= 2.485260963
13.09560013 0.2999961376E-02<br>
3 points exceeded cfl=2 in domain d03 at time 2006-03-29_12:00:16
hours<br>
MAX AT i,j,k: 41 80 4 vert_cfl,w,d(eta)= 2.567909241
-117.0119095 0.2999961376E-02<br>
22 points exceeded cfl=2 in domain d03 at time
2006-03-29_12:00:16+08/09 hours<br>
MAX AT i,j,k: 40 80 4 vert_cfl,w,d(eta)= 6.311451435
-170.4623871 0.2999961376E-02<br>
36 points exceeded cfl=2 in domain d03 at time
2006-03-29_12:00:16+08/09 hours<br>
MAX AT i,j,k: 40 80 3 vert_cfl,w,d(eta)= 6.109247208
-223.6106720 0.2799987793E-02<br>
AVOST IN VILKA<br>
~<br>
~<br>
~<br>
<br>
&time_control<br>
run_days
= 2,<br>
run_hours
= 36,<br>
run_minutes
= 0,<br>
run_seconds
= 0,<br>
start_year
= 2006, 2006, 2006,<br>
start_month
= 03, 03, 03,<br>
start_day
= 29, 29, 29,<br>
start_hour
= 12, 12, 12,<br>
start_minute
= 00, 00, 00,<br>
start_second
= 00, 00, 00,<br>
end_year
= 2006, 2006, 2006,<br>
end_month
= 03, 03, 03,<br>
end_day
= 31, 31, 31,<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
= 60, 60, 60,<br>
frames_per_outfile
= 1000, 1000, 1000,<br>
restart
= .false.,<br>
restart_interval
= 720,<br>
io_form_history
= 2<br>
io_form_restart
= 2<br>
io_form_input
= 2<br>
io_form_boundary
= 2<br>
debug_level
= 0<br>
/<br>
<br>
&domains<br>
time_step
= 8,<br>
time_step_fract_num
= 0,<br>
time_step_fract_den
= 1,<br>
max_dom
= 3,<br>
e_we
= 121, 169, 241,<br>
e_sn
= 121, 169, 241,<br>
e_vert
= 61, 61, 61,<br>
p_top_requested
= 5000,<br>
num_metgrid_levels
= 40,<br>
num_metgrid_soil_levels
= 4,<br>
dx
= 4500, 1500, 500,<br>
dy
= 4500, 1500, 500,<br>
grid_id
= 1, 2, 3,<br>
parent_id
= 0, 1, 2,<br>
i_parent_start
= 1, 33, 53,<br>
j_parent_start
= 1, 33, 53,<br>
parent_grid_ratio
= 1, 3, 3,<br>
parent_time_step_ratio
= 1, 3, 3,<br>
feedback
= 0,<br>
smooth_option
= 0,<br>
eta_levels
= 1.0000, .9976, .9948, .9920, .9890,<br>
.9858, .9825, .9790, .9754, .9718, .9679, .9637, .9590, .9538, .9480,<br>
.9415, .9340, .9251, .9144, .9020, .8883, .8736, .8582, .8420, .8253,<br>
.8079, .7900, .7714, .7523, .7326, .7124, .6915, .6699, .6477, .6248,<br>
.6015, .5779, .5540, .5300, .5057, .4812, .4566, .4319, .4070, .3822,<br>
.3576, .3333, .3100, .2881, .2679, .2494, .2316, .2135, .1936, .1707,<br>
.1445, .1159, .0863, .0569, .0282, .0000,<br>
/<br>
<br>
<br>
&physics<br>
mp_physics
= 8, 8, 8,<br>
ra_lw_physics
= 1, 1, 1,<br>
ra_sw_physics
= 2, 2, 2,<br>
radt
= 4, 4, 4,<br>
sf_sfclay_physics
= 4, 4, 4,<br>
sf_surface_physics
= 3, 3, 3,<br>
bl_pbl_physics
= 4, 4, 4,<br>
bldt
= 0, 0, 0,<br>
cu_physics
= 0, 0, 0,<br>
cudt
= 0, 0, 0,<br>
isfflx
= 1,<br>
ifsnow
= 0,<br>
icloud
= 1,<br>
surface_input_source
= 1,<br>
num_soil_layers
= 6,<br>
sf_urban_physics
= 0,<br>
maxiens
= 1,<br>
maxens
= 3,<br>
maxens2
= 3,<br>
maxens3
= 16,<br>
ensdim
= 144,<br>
slope_rad
= 1, 1, 1,<br>
topo_shading
= 1, 1, 1,<br>
shadlen
= 25000.,<br>
/<br>
<br>
&fdda<br>
/<br>
<br>
&dynamics<br>
w_damping
= 1,<br>
diff_opt
= 2,<br>
km_opt
= 4,<br>
diff_6th_opt
= 2, 2, 2,<br>
diff_6th_factor
= 0.12, 0.12, 0.12,<br>
base_temp
= 290.<br>
damp_opt
= 3,<br>
zdamp
= 5000., 5000., 5000.,<br>
dampcoef
= 0.2, 0.2, 0.2<br>
khdif
= 0, 0, 0,<br>
kvdif
= 0, 0, 0,<br>
non_hydrostatic
= .true., .true., .true.,<br>
moist_adv_opt
= 1, 1, 1,<br>
scalar_adv_opt
= 1, 1, 1,<br>
/<br>
<br>
&bdy_control<br>
spec_bdy_width
= 5,<br>
spec_zone
= 1,<br>
relax_zone
= 4,<br>
specified
= .true., .false.,.false.,<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 clear=all>
<br>
-- <br>
Andre Pattantyus, Graduate Student Research Assistant<br>
Marine and Environmental Systems, Florida Institute of Technology<br>
150 W. University Blvd, Melbourne, FL 32901<br>
<br>
Phone: (321) 674-8330 | Fax: (321) 674-7212 | Email: <a
href="mailto:apattantyus2008@fit.edu" target="_blank">apattantyus2008@fit.edu</a><o:p></o:p></p>
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