[Wrf-users] physics problem

[Richard Newton]

Apologies, I believe I misunderstood.

I think I understand now. Correct me if I’m wrong… if you run the namelist with:

&physics
mp_physics = 6,
ra_lw_physics = 4,
ra_sw_physics = 1,
radt = 30,
sf_sfclay_physics = 1,
sf_surface_physics = 2,
bl_pbl_physics = 1,
bldt = 0,
cu_physics = 1,
cudt = 5,
! kfeta_trigger = 2,
!cu_rad_feedback (max dom) = .true., .true.,
isfflx = 1,
sst_update = 1,
tmn_update = 1,
sst_skin = 1,
bucket_mm = 100.0,
bucket_J = 1.e9,
ifsnow = 1,
icloud = 1,
surface_input_source = 1,
num_soil_layers = 4,
sf_urban_physics = 0,
/

then WRF will run.

But when you uncomment kfeta_trigger and cu_rad_feedback as below:
&physics
mp_physics = 6,
ra_lw_physics = 4,
ra_sw_physics = 1,
radt = 30,
sf_sfclay_physics = 1,
sf_surface_physics = 2,
bl_pbl_physics = 1,
bldt = 0,
cu_physics = 1,
cudt = 5,
kfeta_trigger = 2,
cu_rad_feedback (max dom) = .true., .true.,
isfflx = 1,
sst_update = 1,
tmn_update = 1,
sst_skin = 1,
bucket_mm = 100.0,
bucket_J = 1.e9,
ifsnow = 1,
icloud = 1,
surface_input_source = 1,
num_soil_layers = 4,
sf_urban_physics = 0,
/

then WRF throws an error.

In this case, I believe your error is that the name of the entry is wrong: it should be cu_rad_feedback = .true., .true., rather than cu_rad_feedback (max dom) = .true., .true., . Check also that you’re running WRF 3.6 or later.

The (max dom) indicator in the readme tells you that you should put a value for each of the domains in the model, unlike the other physics options where you only need one single value. The (max dom) does not appear in the actual name. Another example is start_year (max dom), which again tells you that you should put a start year for each domain, but the actual entry should be (for 3 domains) start_year = 2014, 2014, 2014, and not start_year (max dom) = 2014, 2014, 2014.

Hope this helps,
Richard

Richard Newton
PhD Student
School of Earth, Atmospheric and Environmental Sciences
University of Manchester



From: afwande juliet [mailto:afwandej965 at gmail.com]
Sent: 11 November 2015 01:22
To: Richard Newton
Cc: wrf-users at ucar.edu
Subject: Re: [Wrf-users] physics problem

hi Richard thanks for your answer
are u saying I write like this


&physics

mp_physics = 6,

ra_lw_physics = 4,

ra_sw_physics = 1,

radt = 30,

sf_sfclay_physics = 1,

sf_surface_physics = 2,

bl_pbl_physics = 1,

bldt = 0,

cu_physics = 1,

cudt = 5,

isfflx = 1,

sst_update = 1,

tmn_update = 1,

sst_skin = 1,

bucket_mm = 100.0,

bucket_J = 1.e9,

ifsnow = 1,

icloud = 1,

surface_input_source = 1,

num_soil_layers = 4,

sf_urban_physics = 0,

/

kfeta_trigger = 2,

cu_rad_feedback (max dom) = .true., .true.,

Actaully the problem is that when I comment

!kfeta_trigger = 2,

!cu_rad_feedback (max dom) = .true., .true.,

wrf will run but when I introduce the two scheme option, the model generates error in reading name list physics. I am thinking the incompatibility but I am not sure. did you say I had same problem? how did you solve it

thanks

On Tue, Nov 10, 2015 at 8:55 AM, Richard Newton <richard.newton-6 at postgrad.manchester.ac.uk<mailto:richard.newton-6 at postgrad.manchester.ac.uk>> wrote:
Hi Afwande,

The problem may be with the commented entries in the physics section of the namelist. Try instead of commenting out the entries with a “!” exclamation mark, move the lines you want commenting outside the “&physics … /” – the namelist will ignore anything outside the “& … /” construct. Although the “!” exclamation mark commenting should work, as that’s the correct Fortran method, I think I’ve had a similar problem before.

Regards,
Richard

Richard Newton
PhD Student
School of Earth, Atmospheric and Environmental Sciences
University of Manchester



From: afwande juliet [mailto:afwandej965 at gmail.com<mailto:afwandej965 at gmail.com>]
Sent: 10 November 2015 01:56
To: wrf users group; wrfhelp
Subject: [Wrf-users] physics problem

Hi users real.exe cant be executed due to problem in reading namelist.input physics options. The rsl* generates the error below . I have checked through but I cant see whats wrong with phyics options in namelists. Initially the model run well but problem when I introduced the nudging options and the feedback options for radiation and cloud . Apparently the error seems to be in physics options.  can someone help me figure this out. my namelist attached.
I am sorry this problem has bothered for a while

 file cant taskid: 0 hostname: nid00056
   ------ ERROR while reading namelist physics ------
 -------------- FATAL CALLED ---------------
 FATAL CALLED FROM FILE:  <stdin>  LINE:    9886
 ERRORS while reading one or more namelists from namelist.input.
 -------------------------------------------
aborting job:
application called MPI_Abort(MPI_COMM_WORLD, 1) - process 0
~

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.ucar.edu/pipermail/wrf-users/attachments/20151111/c78301e3/attachment-0001.html