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.
- 1 Version history
- 2 In the pipeline
- 3 New data directories
- 4 Validation
- 5 Previous issues now resolved in GEOS-Chem 12
- 6 Outstanding issues not yet resolved in GEOS-Chem 12
The table below shows the previous, current, and successive major releases of GEOS-Chem:
|Previous major release||This version in development||Next major release|
|GEOS-Chem v11-02 (aka 12.0.0)||GEOS-Chem 12||GEOS-Chem 13|
|View v11-02 benchmark history||View GEOS-Chem 12 benchmark history||TBD|
In order to transition to a new, purely numeric versioning system, the GEOS-Chem v11-02-final release also carries the designation GEOS-Chem v12.0.0.
For a complete description of the new versioning system, please see our GEOS-Chem version numbering system wiki page.
In the pipeline
The table below lists features that will eventually be added into GEOS-Chem. Please also see our GEOS-Chem model development priorities page.
|Bug fixes (to be implemented ASAP)|
|FlexChem bug fix: do not zero ACTA, EOH, HCOOH||Katie Travis (MIT)
Sebastian Eastham (MIT)
|Avoid double counting CEDS and GEIA NH3 biofuel emissions||Eloise Marais (Birmingham)||Bug Fix||
|Fix double counting of CO2 emissions in CO2 simulations||Beata Bukosa (UW)||Bug fix||
|GEOS resolution & subgrid convection||Karen Yu (Harvard)||Science||
|Common set of tracers in GEOS-Chem and GEOS||Transport WG
|Heterogeneous uptake of NOx species by cloud droplets||Chris Holmes (FSU)||Science|
|Updated chlorine chemistry||Xuan Wang (Harvard)||Science|
|Extend UCX into the mesosphere||Sebastian Eastham (MIT)||Science|
|Add ND49 timeseries diagnostic for correcting ozone from the height of the lowest model level to 10m||Katie Travis (MIT)||Structural||
|OMI-based Volcanic emissions 2005-2012||Cui Ge (U. Iowa)
Jun Wang (U. Iowa)
|EPA NEI2011 Version EK||Zitely Tzompa-Sosa (CSU)
Emily Fischer (CSU)
|FINNv1.6 biomass burning emissions for 2014-2016||Barron Henderson (US EPA)||Science||
|Anthropogenic PM2.5 dust source||Sajeev Philip (Dalhousie)||Science||
|MEIC emissions over China (2000-2015)||Lu Shen (Harvard)
Melissa Sulprizio (Harvard)
|Grid-independent emissions, including:
||Randall Martin (Dalhousie)
Lee Murray (Rochester)
David Ridley (MIT)
Jintai Lin (PKU)
|EPA-derived BC/OA emissions over US (1990-2012)||David Ridley (MIT)
Chi Li (Dalhousie)
|Ocean ammonia emission inventory||Fabien Paulot (NOAA/GFDL)||Science||
|A snow NOx source from deep snowpack||Maria Zatko (UW)
Becky Alexander (UW)
|MASAGE inventory in HEMCO as default||Fabien Paulot (NOAA/GFDL)
Amos Tai (CUHK)
|Non-agricultural NH3 for use with MASAGE||Amos Tai (CUHK)||Science|
|Radon emission update||Bo Zhang (NIA/NASA Langley)||Science||
|GFAS biomass burning emissions||Mat Evans (York)||Science|
|Wet scavenging in mixed-phase clouds||Bo Zhang (NIA/NASA Langley)||Science||
|Harmonizing Henry's Law coefficients across wet and dry deposition||GCST||Science|
|Sedimentation of stratospheric aerosols||Sebastian Eastham (Harvard)||Science|
|Sea salt aerosol alkalinity||Qianjie Chen (UW)
Becky Alexander (UW)
Xuan Wang (Harvard)
|VBS SOA option||Rokjin Park (SNU)||Science|
|Specialty simulation updates|
|Oxidant fields from v10 for 2006-2012
||Dylan Jones (UofT)||Science||
|Year 2010 ocean Hg boundary conditions from ocean model||Hannah Horowitz (Harvard)||Science|
|Historical products emissions from Zhang et al. (2016), should become default||Colin Thackray (Harvard)||Science|
|AMAP/UNEP 2035 for Hg simulation||Helene Angot (MIT)||Science|
|Africa nested-grid for GEOS-FP and MERRA-2||Eloise Marais (U. Birmingham)||Science||
|West Africa nested-grid for GEOS-FP||Mat Evans (York)
Eleanor Morris (York)
|Tagged sulfate simulation||Becky Alexander (UW)||Science|
|Arsenic simulation||Shiliang Wu (MT)||Science|
|Updated flux diagnostics||Chris Holmes (Florida State)
|Additional modifications for FlexChem, including:
||Mike Long (Harvard)
|Benchmark of stratospheric simulation||Dylan Jones (U. Toronto)||Benchmarking||
|Add total column O3 to benchmarks||Chris Holmes (FSU)
|Uniformity of units||GCST||Structural|
|ObsPack diagnostic as netCDF replacement for planeflight_mod.F||Andy Jacobson (NOAA/ESRL)||Structural||
|NetCDF Output Phase 3b: Updates to eliminate differences between single and multi-segmented GEOS-Chem runs||GCST
|Expansion of model capabilities|
|FlexGrid: Use HEMCO to read met fields and enable nested simulations over any custom domains||Jiawei Zhuang (Harvard)
Jintai Lin (PKU)
|Update ISORROPIA from v2.0 to v2.2, in order to remove persistent noise in output||Seb Eastham (Harvard)||Science||
|Archival of roughness length for temperature z0T||GCST||Met processing|
New data directories
The following HEMCO data directories have been added or updated for GEOS-Chem v11-02. You will have to download the directories relevant to your simulation.
|Inventory||What was added?||When added?||Directory
In this section we provide information about the benchmarks and tests that we have done to validate GEOS-Chem v11-03.
1-month and 1-year benchmarks
For complete information about the benchmark simulations used to validate GEOS-Chem v11-03, please see our GEOS-Chem v11-03 benchmark history wiki page.
Unit tests for GEOS-Chem v11-03
We perform a full set of unit tests on GEOS-Chem on an almost daily basis. These tests ensure that each new feature being added does not break any existing functionality.
Here are the unit tests that we ran before submitting 1-month benchmark simulation for v11-03. Click on the links below to see the results from each set of unit tests:
Previous issues now resolved in GEOS-Chem 12
The following bugs and/or technical issues have been resolved in v11-03.
Outstanding issues not yet resolved in GEOS-Chem 12
The following known issues are slated to be fixed in v11-03:
FlexChem bug fix: do not zero ACTA, EOH, HCOOH
This fix will be included in GEOS-Chem 12.
Katie Travis wrote:
I am working on a VOC simulation, and noticed that in my copy of v11-02f, the following species are set to zero in two places:
! Zero certain species C(ind_ACTA) = 0.e0_dp C(ind_EOH) = 0.e0_dp C(ind_HCOOH) = 0.e0_dp
C(ind_ACTA) = 0.0_dp C(ind_HCOOH) = 0.0_dp
Since none of these species are fixed in Tropchem.eqn, shouldn’t they NOT be set to zero?
Mike Long wrote:'
I think the code should be removed. This must have been a patch added to maintain parity with SMVGEAR w/o anticipating that the species would become active.
Avoid double counting CEDS and GEIA NH3 biofuel emissions
This fix will be included GEOS-Chem 12.
Eloise Marais wrote:
If CEDS includes NH3 emissions, then this will be double counting. I recommend using CEDS, as GEIA is very out of date (1998 according to the HEMCO configuration file I have).
Daniel Jacob replied:
We should use the GEIA NH3 natural emission inventory (1° x 1° file from Eleanor Morris) but not the GEIA NH3 biofuel inventory.