GEOS-Chem 13.2.0

GEOS-Chem Versions Page

This page includes information about GEOS-Chem 13.2.0 which is currently in development.

Version overview

The following items have been added to GEOS-Chem 13.2.0 since the last benchmark for GEOS-Chem 13.1.0. See also the 13.2.0 milestone on Github.

Feature	Contributor(s)	Model scope	Notes
Updates that will affect full-chemistry simulations
CEDS v2 emissions through 2019	Patrick Campbell (NOAA-ARL) Melissa Sulprizio (GCST)	Emissions	See also geoschem/geos-chem Feature Request #757
Updated Yuan/BNU MODIS LAI product (2000-2019)	Jenny Fisher (U. Wollongong) Melissa Sulprizio (GCST)	Emissions Dry deposition	See also geoschem/geos-chem Feature Request #717
Bug fixes: Add carbon to species scale factors to AEIC VOC emissions Fix molecular weight of ethanol (EOH) in species_database.yml	Christoph Keller (GMAO)	Bug fix	See also geoschem/geos-chem Pull Request #776
Improved wet scavenging from Luo et al. (2020) (as option)	Gan Luo (Albany) Fangqun Yu (Albany)	Wet deposition	See geoschem/geos-chem Pull Request #779 These updates will replace the Luo et al. (2019) option NOTE: Some small differences at the level of numerical noise (i.e. 1e-6 to 1e-7 orders of magnitude smaller than values) will still occur even when this option is switched off. This update included enforcing REAL*8 precision by adding _fp or _f8 to numerical constants where they were lacking. The resulting code should be more numerically stable whether or not Luo wetdep is turned on or off.
Updates that will NOT affect full-chemistry simulations
Trace metal simulation	Junwei Xu (Dalhousie)	Specialty simulation	See also geoschem/geos-chem Pull request #769 Daily data files are very large; we have compressed some. Added trace metal species as a standalone simulation, so as not to burden other simulations with large data I/O
Features only affecting GCHP:

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
CEDS	Default	CEDS v2 emissions through 2019	HEMCO/CEDS/v2021-06
Yuan-processed MODIS LAI	Default	Updated BNU v6/Yuan-processed MODIS LAI product (2000-2020)	HEMCO/Yuan_XLAI/v2021-06
TRACE_METALS	Optional	Canadian (CAC) and US (NATA) emissions (2011-2013) for the trace metals specialty simulation	HEMCO/TRACE_METALS/v2021-06

1-month benchmarks

This version will require 1-month full-chemistry benchmarks, with and without Luo wet deposition.

1-year benchmarks

This version will require 1-year full-chemistry and transport tracer benchmarks, with and without Luo wet deposition.