GEOS-Chem 13.3.0

GEOS-Chem Versions Page

This page includes information about GEOS-Chem 13.3.0 which is currently in development.

Version overview

The items listed below have been added to GEOS-Chem 13.3.0 since GEOS-Chem 13.2.0. See also the following Github pages:

• 13.3.0 milestone for geoschem/geos-chem
• 13.3.0 milestone for geoschem/GCHP
• 3.2.0 milestone for geoschem/HEMCO

Feature	Contributor(s)	Model scope	Notes
Avoid double counting of acetone source from monoterpenes when using online MEGAN	Dylan Millet (UMN)	Emissions	See also geoschem/HEMCO PR #93
HMS chemistry	Jonathan Moch (Harvard) Mike Long (GCST)	Chemistry	See geoschem/geos-chem PR #905
C2H4 and C2H2 chemistry	Kelvin Bates (Harvard) Ke Li (Harvard) Mike Long (GCST)	Chemistry	See geoschem/geos-chem PR #904
CH3O2 + OH reaction	Kelvin Bates (Harvard)	Chemistry	See geoschem/geos-chem PR #904
Cleaning up heterogeneous chemistry reaction rate computations	Bob Yantosca (GCST)	Chemistry & Structural	See geoschem/geos-chem PR #897
Revise gamma(N2O5) computation; cap Alpha at 3.2e-8	Viral Shah (Harvard)	Chemistry	See geoschem/geos-chem PR #907
Bug fixes in heterogeneous chemistry: Fixed typo in CloudHet https://github.com/geoschem/geos-chem/issues/841 Fixed typos in ClNO2 hetchem reactions: HNO2 should be a product, not HNO3]	Viral Shah (Harvard) Chris Holmes(FSU)	Chemistry & Bug fix	See geoschem/geos-chem PR #906 See geoschem/geos-chem PR #841

New data directories

The following data directories have been added or updated in this version. You will have to download the directories relevant to your simulation.

Inventory	Type	What was added?	Directory
GEOSCHEM_RESTARTS/v2021-09/	Restart files	Updated fullchem and TOMAS restart files for GEOS-Chem and GCHP with the following new species: C2H2, C2H4, HMS, ETHN, ETHP, ETO, ETOO.	ExtData/GEOSCHEM_RESTARTS/v2021-09/

1-month benchmarks

TBD

1-year benchmarks

TBD