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geoschem / geos-chem

GEOS-Chem "Science Codebase" repository. Contains GEOS-Chem science routines, run directory generation scripts, and interface code. This repository is used as a submodule within the GCClassic and GCHP wrappers, as well as in other modeling contexts (external ESMs).
http://geos-chem.org
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How to get extinction coefficients from RRTMG in GEOS-Chem #2422

Open neyest opened 2 months ago

neyest commented 2 months ago

Your name

Soroush

Your affiliation

University of California, Riverside

Please provide a clear and concise description of your question or discussion topic.

Hi there,

I'm using standard full chemistry GEOS-Chem. I was wondering if there's any way to get aerosol extinction coefficient in GEOS-Chem output. Checking HISTORY.rc, I don't see the extinction coefficient in RRTMG fields.

Alternatively, as mentioned here https://github.com/geoschem/geos-chem/issues/1283, AOD per vertical layer would be enough to calculate the extinction coefficient. However, RRTMG AOD (RadAODWL1_PM) in the output file is already vertically integrated. Is there any option to have layered AOD in outputs, instead of total AOD?

Please let me know if you have any questions.

Best, Soroush

yantosca commented 2 months ago

Thanks @neyest for re`aching out. I am not very familiar with the RRTMG module or with aerosols in general, as I only focus on coding. Tagging @sdeastham who will probaly know more about this topic.