WRF-Chem model stopping without any error message.

[Manas Ranjan Mohanty]

Hi, 

I am trying to run a real test case. I could successfully generate the real.exe output and updated the biogenic emission as well as chemistry from mozart files using mozbc.

But while I am trying to run the WRF-Chem model, it stops after a few time, even after generating a wrfout_ file for the 1st time step. At the end of the rsl.error file, there is this message:

d01 2016-05-01_00:00:00  Input data is acceptable to use: wrffdda_d01
d01 2016-05-01_00:00:00 Input data processed for aux input  10 for domain   1
d01 2016-05-01_00:00:00  Input data is acceptable to use: wrfbdy_d01
Timing for processing lateral boundary for domain        1:    4.21134 elapsed seconds
 Tile Strategy is not specified. Assuming 1D-Y
WRF TILE   1 IS      1 IE     42 JS      1 JE     29
WRF NUMBER OF TILES =   1

Any possible solution for the same?

Thanks in advance,

Manas

[Mary Barth]

Hi Manas,

My suggestion is to search for cfl errors which will show up in different rsl files. So type:

grep cfl rsl*

If cfl errors exist the easiest thing to do is reduce the WRF time_step.

- Mary

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Mary Barth 

Senior Scientist   

phone: 303-497-8186    email: bar...@ucar.edu

National Center for Atmospheric Research

P.O. Box 3000

Boulder, CO 80307

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[Manas Ranjan Mohanty]

Thankyou for your suggestion. 

I have tried checking for cfl errors. I have also changed the time steps with different values, but the problem persists.  

I have a 20km outer domain and 4km inner domain. I have tried time steps of 20, 30, 40 , 45, 50, 60.

[Rajesh Kumar]

Hi Manas,

Here are some other suggestions: 

(1) Please try to run just the outer domain first and see if it works. 

(2) I also suggest looking at the end of each rsl.* files to see if you have a more informative message in them.

(3) Make sure you are not using too many processors and following the guidance from WRF developers. 

Rajesh

--

Rajesh Kumar

Interim Lab Deputy Director

Research Applications Laboratory 

National Center for Atmospheric Research 

E-mail: rku...@ucar.edu

Phone: +1-303-497-1413

Web: https://staff.ucar.edu/users/rkumar

My working day may not be your working day. Please do not feel obliged to reply to this email outside of your normal working hours.

[Manas Ranjan Mohanty]

Thankyou for your suggestions!

I tried running with 1 domain and 16 processors (was using 64/144 previously). The model stops right here. Some steps after the previous error. 

call madronich phot initialization
 start_domain_em: numgas =   66
Timing for Writing wrfout_d01_2016-05-01_00:00:00 for domain        1:   40.55085 elapsed seconds
 mediation_integrate: med_read_wrf_chem_emissions: Open file wrfchemi_00z_d01
 HOURLY EMISSIONS UPDATE TIME        0.0       0.0
mediation_integrate: med_read_wrf_chem_emissions: Read emissions for time 2016-05-01_00:00:00
d01 2016-05-01_00:00:00  Yes, this special data is acceptable to use:  OUTPUT FROM WRF-CHEM V3.1.1 EMISSIONS PREPROCESSOR
d01 2016-05-01_00:00:00  Input data is acceptable to use: wrfchemi_00z_d01
**WARNING** Time in input file not being checked **WARNING**
d01 2016-05-01_00:00:00  Error trying to read metadata
d01 2016-05-01_00:00:00  Input data is acceptable to use: wrffirechemi_d01_2016-05-01_00:00:00
**WARNING** Time in input file not being checked **WARNING**

d01 2016-05-01_00:00:00  Input data is acceptable to use: wrffdda_d01
d01 2016-05-01_00:00:00 Input data processed for aux input  10 for domain   1
d01 2016-05-01_00:00:00  Input data is acceptable to use: wrfbdy_d01

Timing for processing lateral boundary for domain        1:    1.94967 elapsed seconds

 Tile Strategy is not specified. Assuming 1D-Y

WRF TILE   1 IS      1 IE     83 JS      1 JE     57

WRF NUMBER OF TILES =   1

D01 3-D analysis nudging reads new data at time =      0.000 min.
D01 3-D analysis nudging bracketing times =     0.00  360.00 min.
d01 2016-05-01_00:00:00  ----------------------------------------
d01 2016-05-01_00:00:00  W-DAMPING  BEGINS AT W-COURANT NUMBER =    1.000000
d01 2016-05-01_00:00:00  ----------------------------------------