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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Include nitrate aerosol in Ox family #2070

Closed msulprizio closed 10 months ago

msulprizio commented 11 months ago

Name and Institution (Required)

Name: Melissa Sulprizio Institution: Harvard / GCST

New GEOS-Chem feature or discussion

@djxjacob wrote:

Haipeng (@jimmielin) brought to my attention that our current definition of Ox does not include nitrate aerosol (NO3A1). That should be fixed in 14.3 (please add to model development priorities). NO3A1 should be part of Ox. That’s a clear issue now because one of the branches of NO3A1 photolysis (to NO2+OH) should conserve Ox. More pernicious is the effect of HNO3 <-> NO3A1 thermodynamics – if shifts in HNO3 <-> NO3A1 partitioning are mis-accounted as Ox sources/sinks that would overestimate Ox production and loss.

@viral211 wrote:

I assume NO3A1 refers to the GEOS-Chem NIT species. If so, we would also need to include NITs in the Ox family.

msulprizio commented 10 months ago

Pull request #2017 containing updates for this issue has now been merged into the 14.3.0 development branch

fangzhoupig commented 6 months ago

Thanks!!