lightning flash intensity CG and IC

[UNASHISH MONDAL]

Dear all, 

I am Unashish, currently working on lightning intensity simulation through WRF. I am very much new to the WRF-CHEM. if someone can help me with running WRF-CHEM for lightning flashes. 

Thanks 

[Mary Barth]

Hello Unashish,

Please read the WRF-Chem User's Guide for more information. And search previous WRF-Chem lightning communications on this email list to start using WRF-Chem for lightning-NOx emissions.

To just get lightning flash rate, you don't need the chemistry on. That is controlled in the physics and diagnostics of WRF. Please see the WRF namelist information.

- Mary

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[UNASHISH MONDAL]

Dear all,

As I planned to run the WRF-CHEM for lightning CG and IC. I used the namelist_input which I am attaching to this email. Would you please help me to find out where I am going wrong? I just need CG and IC for the specific period.

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Regards

Unashish Mondal
Ph.D. Research Scholar

Department of Atmospheric Science

School of Earth Sciences

Central University of Rajasthan,
Bandarsindri, N.H. 8, (Jaipur Ajmer Highway)
Kishangarh - 305817

Distt - Ajmer, Rajasthan (INDIA)

Mobile: +91 9079141664,8107846022

Email: unas...@protonmail.com

[fjpi]

Hi Unashish,

I would say your namelist is using WRF-ELEC, as you define:

 elec_physics                        = 1,
 nssl_ipelec                         = 2,
 nssl_idischarge                     = 1,
 nssl_iscreen                        = 0,
 nssl_ibrkd                          = 2,
 nssl_isaund                         = 12,
 nssl_lightrad                       = 12000,
 nssl_disfrac                        = 0.3,
 nssl_ecrit                          = 120000,

More information about WRF-ELEC: https://sourceforge.net/projects/wrfelec/files/elec-3.7/

Did you compile WRF-ELEC together with WRF-Chem? If you have just compiled WRF-Chem, I think your namelist will not work.

Anyway, you can still use WRF-Chem without WRF-ELEC for lightning, as you can read in the WRF-Chem user's guide.

Regards,

Javier

[UNASHISH MONDAL]

Dear all,

I removed the ELEC part from the namelist.input. Now the issue is segmentation fault. if anyone can help me with a simplistic namelist for only CG and IC. It will be helpful.

Thank you in advance.

[Mary Barth]

Hello Unashish,

The lightning option = 1 you chose is appropriate for dx<5km because it relies on the maximum updraft speed in the storm updraft. You chose dx=10km which will not produce updraft speeds representative of thunderstorms, and in fact the storms are likely represented by the convective parameterization.

For dx=10 km, you should use lightning_option = 11. 

- Mary

  
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