GEOS-Chem versions under development

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Here we have posted links to a separate wiki page describing each GEOS-Chem model version.

GEOS-Chem development history

In the sections below, we list information about current and past GEOS-Chem releases.


  1. Information about 1-year benchmark simulations can be found on the individual wiki pages for each GEOS-Chem version listed below.
  2. For versions prior to v7-04-12, please see the GEOS-Chem version history web page.

--Bob Y. 15:25, 16 January 2014 (EST)

Current GEOS-Chem version in development

GEOS-Chem v11-02-final will also carry the designation GEOS-Chem 12.0.0. We are migrating to a purely numeric versioning system in order to adhere more closely to software development best practices. For a complete description of the new versioning system, please see our GEOS-Chem version numbering system wiki page.

Version Expected release Important features Benchmark history
aka v11-02-final
Pending approval of v11-02-rc

NOTE switch in version numbering system

Halogen chemistry; Updated isoprene chemistry; Updated PAN chemistry; EDGAR v4.3; NetCDF diagnostic output v11-02 history
v11-02-rc v11-02-release-candidate
RELEASED 22 Jun 2018
Halogen chemistry; Updated isoprene chemistry; Updated PAN chemistry; EDGAR v4.3; NetCDF diagnostic output v11-02 history

--Bob Yantosca (talk) 20:35, 22 June 2018 (UTC)

Previously released GEOS-Chem versions

NOTE: Each new GEOS-Chem version since v9-01-02 is now evaluated with one or more 1-year benchmark simulations prior to release. Therefore, each new GEOS-Chem version is now equivalent to what we used to call a "public release" prior to v9-01-02. We have since stopped using the terms "public release" and "beta release".

For information about 1-year benchmark simulations for GEOS-Chem v8-02-04 and earlier, see this website.

Version Date Released Important features Benchmark history
v11-01 20 Dec 2016 (provisional)
01 Feb 2017 (public)
FlexChem; MERRA-2; Species Database; Air moisture fixes and updates; Compatibility with the GNU Fortran compiler; Updated emissions; NetCDF restart files v11-01 history
v10-01 01 May 2015 (provisional)
17 June 2015 (public)
UCX chemistry mechanism; HEMCO, Online radiative transfer v10-01 history
v9-02 17 Jan 2014 (provisional)
03 Mar 2014 (public)
Updated soil NOx emissions module, POPs simulation, Inorganic chemistry updates, Methyl peroxy nitrate chemistry, Adopt Paulot isoprene scheme as standard, RCP emission scenarios, AEIC aircraft emissions inventory, GEOS-FP met fields v9-02 history
v9-01-03 14 Sep 2012 Updated acetone sources & sinks; Improved sea salt emission & deposition; Improved snow scavenging and washout parameterization; Tropospheric bromine chemistry; Stratospheric P and k (monthly climatological) v9-01-03 history
v9-01-02 28 Nov 2011 APM aerosol microphysics; GFED3 biomass emissions; RETRO Anthropogenic Emissions; Various fixes to correct several identified issues v9-01-02 history
v9-01-01 07 Jun 2011 Compatibility with the GMAO MERRA met data product; Updated lightning NOx; various fixes v9-01-01 history
v8-03-02 07 Sep 2010 Updated Hg and CO2 simulations
v8-03-01 04 May 2010 ISORROPIA II; TOMAS microphysics option; Updates to SOA and photolysis
v8-02-04 24 Feb 2010 LINOZ strat chemistry; NEI2005 anthro emissions; MEGAN v2.1 biogenic emissions
v8-02-03 Oct 2009 KPP solver; ICOADS emissions; Updated makefile structure
v8-02-02 08 Jun 2009 Non-local PBL mixing scheme; Updated Bond BC & OC emissions
v8-02-01 26 May 2009 Updated chemistry & photolysis reactions; Glyoxal chemistry mechanism
v8-01-04 10 Mar 2009 Various emissions updates (regional & global inventories); GFED2 biomass emissions updates
v8-01-03 Dec 2008 Installation of GMI TPCORE routine
v8-01-02 Nov 2008 Nested grid simulations for 0.5° x 0.666°
v8-01-01 May 2008 Capability to run with GEOS-5 met fields
v7-04-13 Nov 2007 H2/HD simulation; Bug fixes in SMVGEAR, lightning, and dynamic tropopause
v7-04-12 Oct 2007 Introduction of dynamic tropopause

--Bob Y. 15:25, 16 January 2014 (EST)

Mean OH from GEOS-Chem 1-year benchmark simulations

Here is a plot of the mean OH concentration from several recent GEOS–Chem 1-year benchmark simulations. The mean OH is an indicator how the chemistry mechanism is performing. Typical values are 10–12 x 105 molecules cm-1.

File:GEOS-Chem-Mean OH.png

--Bob Y. 12:41, 17 January 2014 (EST)

Global burden history

Please see our Global burden history wiki page to view the global burdens for several species from several recent GEOS-Chem 1-year benchmark simulations.

--Bob Y. (talk) 19:32, 9 November 2015 (UTC)

GEOS–Chem Benchmarking Procedure

For a complete description about the the standard 1-month and 1-year benchmark simulations, please see our GEOS-Chem Benchmarking wiki page.

--Bob Y. 15:47, 30 April 2015 (EDT)