WRF-Chem offline chemistry

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Soroush
Posts: 8
Joined: Wed Sep 12, 2018 8:35 pm

WRF-Chem offline chemistry

Post by Soroush » Fri Sep 28, 2018 2:26 pm

Hello everyone,

I would appreciate if you could answer my question about WRF-Chem
offline mode.
I plan to run WRF-Chem without feedback from chemistry on meteorology
(offline). I also have read some documents that compare WRF-Chem
online and offline modes (e.g.
https://www.asp.ucar.edu/sites/default/ ... 9_2016.pdf).
However, I don't know how can I change WRF-Chem from default (online) to offline mode.
Does anyone have any idea how can I do that? I would appreciate if
you can share a sample namelist for this case too.
Thank you in advance.


Best,
Soroush

ravan20184PJ
Posts: 4
Joined: Mon Oct 01, 2018 4:42 am

Re: WRF-Chem offline chemistry

Post by ravan20184PJ » Mon Oct 01, 2018 4:49 am

WRF-Chem is always online (meteorology and chemistry are simulated within the same modeling framework). The chemistry feedback is turned on by setting the option "aer_ra_feedback".

Soroush
Posts: 8
Joined: Wed Sep 12, 2018 8:35 pm

Re: WRF-Chem offline chemistry

Post by Soroush » Thu Oct 04, 2018 5:53 pm

Thank you for the explanation. In this case I'm not sure if the off-line mode is helpful for my case. Please let me clarify what I plan to do. I want to simulate "radiative effect" of aerosols (I know how to do this part). However, I don't want to have any feedback from the calculated "radiative effect" on meteorological parameters such as temperature. Can you please let me know if it is possible in WRF-Chem?

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