MOZART-MOSAIC error (option 202)

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soumyajyoti jana

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Sep 15, 2023, 4:09:33 AM9/15/23
to wrf-chem
Dear all,

I am facing a problem while running WRF-Chem (v4.3.3). When running with option 202, I am getting the following error, though the model is running and giving output. This run is without running 'mozbc' (no initial/boundary condition). 

Timing for main: time 2020-05-17_06:14:00 on domain   1:   32.63890 elapsed seconds
entering mosaic_cloudchem_driver - ktau =      8
 dvode--  at t (=r1) and step size h (=r2), the                                  
       corrector convergence failed repeatedly                                  
       or with abs(h) = hmin                                                    
      in above,  r1 =  0.0000000000000D+00   r2 =                  NaN
 *** module_cmuaq_bulk, aubr aqintegr1 -- svode failed, istate =          -5
 *** mosaic_cloudchem_driver, subr interface_to_aqoperator1
    id,it,jt,kt, istat_fatal, warn =    1    7   13   18       -10         0
 dvode--  at t (=r1) and step size h (=r2), the                                  
       corrector convergence failed repeatedly                                  
       or with abs(h) = hmin                                                    
      in above,  r1 =  0.0000000000000D+00   r2 =                  NaN
 *** module_cmuaq_bulk, aubr aqintegr1 -- svode failed, istate =          -5
 *** mosaic_cloudchem_driver, subr interface_to_aqoperator1
    id,it,jt,kt, istat_fatal, warn =    1    6   14   18       -10         0
 dvode--  at t (=r1) and step size h (=r2), the                                  
       corrector convergence failed repeatedly                                  
       or with abs(h) = hmin                                                    
      in above,  r1 =  0.0000000000000D+00   r2 =                  NaN
 *** module_cmuaq_bulk, aubr aqintegr1 -- svode failed, istate =          -5
 *** mosaic_cloudchem_driver, subr interface_to_aqoperator1
    id,it,jt,kt, istat_fatal, warn =    1    5   15   18       -10         0
 dvode--  at t (=r1) and step size h (=r2), the                                  
       corrector convergence failed repeatedly                                  
       or with abs(h) = hmin                                                    
      in above,  r1 =  0.0000000000000D+00   r2 =                  NaN
 *** module_cmuaq_bulk, aubr aqintegr1 -- svode failed, istate =          -5
 *** mosaic_cloudchem_driver, subr interface_to_aqoperator1
    id,it,jt,kt, istat_fatal, warn =    1    4   16   18       -10         0
leaving  mosaic_cloudchem_driver - ktau =      8      4

When running with mozbc model crashes. I am attaching rsl.out.0000, namelist.input and mozbc input file. 

Thank you in advance

Best regards

Soumyajyoti


rsl.out.0000
namelist.input
MOZART-MOSAIC_4bins_202_camchem_mod.inp

Krishna Kedia [Student-PECS]

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Sep 15, 2023, 5:47:33 AM9/15/23
to wrf-chem, mant...@gmail.com
Hi everyone,

I have been facing a similar issue with chem_opt = 202 implementation wherein the model crashes immediately when IC-BC are set using CAM-Chem boundary conditions dataset through mozbc utility.
It is pertinent to note that chem_opt = 201 runs smoothly with no issues when IC-BC are initialised through mozbc.

I have attached the error message log (rsl.error.0000) obtained when the model crashes with segmentation fault. Also, please find attached the namelist.input file, the MOZART-MOSAIC mapping used in mozbc utility and the output file of mozbc showing success in initialising IC-BC. 
 
As I understand, several other members in the forum are facing similar issues with chem_opt = 202. Thus, it would be of great help if the experts in the forum could provide some direction towards resolving this issue. Especially, help in making sense of the error messages and possible causes of the errors would be of great value. I am happy to provide any more details required for the discussion.

Thanking you
Krishna Kedia

From: soumyajyoti jana <mant...@gmail.com>
Sent: 15 September 2023 9:09 AM
To: wrf-chem <wrf-...@ucar.edu>
Subject: [WRF-Chem] MOZART-MOSAIC error (option 202)
 
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namelist.input
rsl.error.0000
MOZART_MOSAIC.inp
MOZART_MOSAIC.inp

a21es...@iitbbs.ac.in

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Jul 19, 2024, 12:29:21 AM7/19/24
to wrf-chem, Krishna Kedia [Student-PECS], mant...@gmail.com
Hii,
Have you resolved the issue?

Regards,
Dhananjay

Rakesh

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Jul 20, 2024, 7:22:37 AM7/20/24
to a21es...@iitbbs.ac.in, wrf-chem, Krishna Kedia [Student-PECS]
Dear all, 
Similar issue I am also facing using mp_physics = 10 (intel compiler). I noticed that when we ran real.exe, the error comes "too many variables ....., line 88". Snap of the error and namelist.input is attached. And the model starts without mozbc, and will run for few simulation days before it crashes. The problem with same setup with lin et al (mp_physics = 2) does not exists. But it does not offer wet scavenging. I saw few namelist.input in the wrf forum (I tried exact same namelist.input in my case but failed) using mp_physics = 10 (Morrison double moment) I wonder what different they have tried.

It would be very helpful if someone from admin try to resolve this issue.

Thanks and regards,
Rakesh
PhD Research Scholar
Department of Mechanical Engineering
IIT D



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With Regards,
Rakesh Maity
error in real.jpeg
namelist.input

Xinjie Huang

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Oct 3, 2025, 10:00:09 PMOct 3
to wrf-chem, rakesh...@gmail.com, wrf-chem, Krishna Kedia [Student-PECS], a21es...@iitbbs.ac.in, xjh...@princeton.edu
Hi Rakesh, 

I want to second that I have the exactly same problem with you: chem_opt=202 doesn't work with mp_physics=10 when bc on; and switching to mp_physics=2 would solve this problem!

Indeed it would be great if someone more experienced could explain this issue better.

Could you please share what's your workaround for this issue in the end?

Thanks, 

Xinjie

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