Hello,
This is sort of a due-diligence to make sure that everything is up-to-date in our configurations. CMAQ/DOCS/Users_Guide/Tutorials/CMAQ_UG_tutorial_WRF-CMAQ_Benchmark.md at main · USEPA/CMAQ · GitHub provides some recommendations but I have a couple of questions:
*Is cb6r3_ae7_aq and not cb6r5_ae7_aq still the recommended mechanism? [I’ll leave any q about CRACMM1 or 2 for a future discussion].
*It still recommends WRFv4.5.1 but we have been using newer versions for some time. Has WRF-CMAQ been tested with WRFv4.6? What about v4.7?
Thanks,
Arturo
P.S. I just saw the post CMAQ Release Notes: WRF CMAQ Coupled Model · USEPA/CMAQ Wiki · GitHub that I’d not seen earlier, and which probably means that the answer to my 2nd question is no.
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Hi Arturo,
The choice of a particular chemical mechanism is on each user. As far as I know, we are pushing toward the CRACMM direction and cb6 will be phased out in the future. cb6r5 is an updated version of cb6r3 (confirmed with my colleague, Dr. Sarwar) so I think the former is better.
Starting from WRF version 4.4 and CMAQ version 5.3.3, user can construct the WRF-CMAQ coupled model with his/her favorite version of each model (in general of course the latest version has bug fixes and more advanced features). One of my colleagues is running WRF-CMAQ coupled model (WRF 4.7 and CMAQ 5.5) for his urban modeling work with a WRF nested domain. Yes WRF-CMAQ is capable running on a WRF nested domain (no need to run one domain at a time) and this feature hopefully will be available to all users soon.
Cheers,
David