GEOS-Chem 13.2.0

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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)

Updated Yuan/BNU MODIS LAI product (2000-2019) Jenny Fisher (U. Wollongong)
Melissa Sulprizio (GCST)
Dry deposition
Bug fixes:
  1. Add carbon to species scale factors to AEIC VOC emissions
  2. Fix molecular weight of ethanol (EOH) in species_database.yml
Christoph Keller (GMAO) Bug fix
Improved wet scavenging from Luo et al. (2020) (as option) Gan Luo (Albany)
Fangqun Yu (Albany)
Wet deposition
  • IMPORTANT NOTE: Some small differences at the level of numerical noise (i.e. differences ~1e-6X or ~1e-7X smaller than values) will still occur even when the default wetdep scheme is used. This is because we now better enforce REAL*8 precision by adding _fp or _f8 suffixes to numerical constants where they were lacking before for both Luo wetdep and the default wetdep.
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.