Make Initial and Boundary Condition from WRF-Chem outputs for smaller domain

[Ali Mousavinezhad]

Hello,

I have a question regarding preparing initial and boundary conditions for WF-Chem simulation. I'm running two domains nested using WRF-Chem. The problem is that my computing resources restrict me to run the simulation using nested option. I want to run the bigger domain first and then make IC and BC from that simulation for the smaller domain. Can I use MOZBC?

Thanks in advance for your time.

Regards,

Ali

[Mary Barth]

Ali,

Use MOZBC for the bigger domain, and then use ndown.exe for the inner
domain.

Mary

[Ali Mousavinezhad]

Hi Mary,

Thank you for your help.

I have another question. Is it fine to choose different chem_opt for parent and nested domains?

Regards,

Ali

[Mary Barth]

Hi Ali,

The challenge in using different chem_options for different domains is mapping the species from one chemical mechanism to another. For example, the names in the MOZART suite of mechanisms won't match all the names in the RACM or CB05 mechanism. However, it might be possible to change chem options that are part of the suite, but I would still worry about consistently mapping species.

Mary

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Mary Barth                                Phone:  303-497-8186
Senior Scientist                          email: bar...@ucar.edu

National Center for Atmospheric Research                        
P.O. Box 3000                  
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[Ali Mousavinezhad]

Dear Dr. Barth,

Thank you so much for your explanation. You are right. I tested it for two-way nesting and an error occurred. I will use the same mechanism for both domains.

Regards,

Ali