GEOS-Chem 14.3.0

GEOS-Chem Versions Page

This page includes information about GEOS-Chem 14.3.0. The GEOS-Chem model development priorities page lists additional developments that may be added.

Version overview

This version is currently in development

Repository	GitHub Milestone	DOI
GCClassic 14.3.0	14.3.0 milestone for geoschem/GCClassic	TBD
GCHP 14.3.0	14.3.0 milestone for geoschem/GCHP	TBD
GEOS-Chem (science codebase) 14.3.0	14.3.0 milestone for geoschem/geos-chem	TBD
HEMCO 3.8.0	3.8.0 milestone for geoschem/HEMCO	TBD

What's new in this version

Updates that will affect full-chemistry benchmark simulations

Feature	Contributor(s)	Model scope	Notes and references
Update reactions with new JPL & IUPAC recommendations	Kelvin Bates (NOAA CSL)	Chemistry	geos-chem PR #1765 Bates, K.H., et al., EGUsphere [preprint, 2024.]
Interim fix for runaway HMS chemistry	Sebastian Eastham (MIT)	Chemistry	geos-chem PR #2006
Cloud-J for computing photolysis rates as default	Lizzie Lundgren (Harvard)	Photolysis	Fast-JX is still available as a build option geos-chem PR #1848 gcclassic PR #27 gchp PR #356
Fix bugs setting strat aerosol OD passed to Fast-JX	Lizzie Lundgren (Harvard)	Photolysis	geos-chem PR #2018
Bug fix for dry deposition to snow and ice	Ryan Pound (York)	Dry deposition	geos-chem PR #2045
Bug fix for application of FRSNO in land cover arrays	Ryan Pound (York)	Dry deposition	geos-chem PR #2046
TOMAS in GCHP	Betty Croft (Dalhousie)	TOMAS	GCHP PR #359 geos-chem PR #2060 HEMCO PR #250 Dummy species added to the chemistry mechanism cause numerical differences
Add nitrate aerosol to Ox family definition in gckpp.kpp	Melissa Sulprizio (Harvard)	Diagnostics	geos-chem PR #2071

Updates that will NOT affect full-chemistry benchmark simulations

Feature	Contributor(s)	Model scope	Notes and references
Updates that will NOT affect full-chemistry benchmark simulations
GEOS-IT meteorology	Lizzie Lundgren (Harvard)	New meteorology option	geos-chem PR #1848
Bug fix for TOMAS sulfate production rates	Betty Croft (Dalhousie)	TOMAS	geos-chem PR #1569
Now read the Hg restart file from GEOSCHEM_RESTARTS/v2023-12	Helene Angot (CNRS/IGE) Viral Shah (GMAO) Bob Yantosca (Harvard)	Hg sim	geos-chem PR #2059 geos-chem #2055
Remove month loop in GetIndex2Interp (bug fix for LAI interpolation)	Nick Balasus (Harvard)	LAI	HEMCO PR #254
Add missing units in comments of KPP/fullchem/commonIncludeVars.sh	Jessica Haskins (U. Utah) Bob Yantosca (Harvard)	Documentation	geos-chem PR #2061
Move aerosol_mod.F90 module arrays to state_chm	Lizzie Lundgren (Harvard)	Structural	geos-chem PR #2015
Reduce timers to essential list only	Melissa Sulprizio (Harvard)	Structural	geos-chem PR #2069
Use rundir (not absolute path) to select the executable file for integration and parallel tests	Bob Yantosca (Harvard)	Testing	geos-chem PR #2084
Fix additional memory leaks in GEOS-Chem	Bob Yantosca (Harvard)	Performance	geos-chem PR #2104
Stratospheric adjustment and additional output fields for RRTMG in GCHP	Seb Eastham (Imperial College) Lizzie Lundgren (Harvard)	GCHP RRTMG	geos-chem PR #2010
Avoid a semicolon in CMAKE_Fortran_Flags when passing additional flags to CMake	Simon Branford (Birmingham)	GCHP	GCHP PR #334 GCHP #326
Increase time limits for GCHP integration tests	Bob Yantosca (Harvard)	GCHP	geos-chem PR #2095
Fix IsModelLevel check for CESM and WRF-GC	Haipeng Lin (Harvard)	CESM/ WRF-GC	HEMCO PR #244
GEOS-Chem TransportTracers simulation in GEOS	Lizzie Lundgren (Harvard)	GEOS	geos-chem PR #2058
Updates from GMAO for GEOS	Lizzie Lundgren (Harvard)	GEOS	geos-chem PR #2062

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	Simulations	What was added?	Directory
Cloud-J look-up tables	fullchem, aerosol-only, Hg	Cloud-J is the new default photolysis option Fast-JX is still recommended for Hg simulations pending further work (build with -DFASTJX=y)	ExtData/CHEM_INPUTS/CLOUD-J/v2023-05 ExtData/CHEM_INPUTS/CLOUD-J/v2023-11-Hg
RRTMG	RRTMG (GCHP only)	Changed seconds in time units string from 0.0 to 00 Files will need to be re-downloaded	ExtData/HEMCO/RRTMG/v2018-11
Restart files	Hg simulation	Now use well spun-up initial conditions for Hg simulation	ExtData/GEOSCHEM_RESTARTS/v2023-12
CH4 emissions from hydropower	carbon sim CH4 sim tagCH4 sim	CH4 hydropower emission files are incompatible with GCHP #2112 Files will need to be downloaded	ExtData/HEMCO/CH4/v2023-04/ResME/

1-month full-chemistry benchmarks

1-month benchmark setup

The following table describes the GEOS-Chem setup for both GEOS-Chem Classic and GCHP 1-month benchmark simulations.

Git tag(s):	GEOS-Chem Classic: 14.3.0-rc.0 (aka 14.3.0-alpha.9) GCHP: 14.3.0-rc.0 (aka 14.3.0-alpha.9) HEMCO: 3.8.0-rc.0
Compared to previous benchmark:	14.2.3
Software environment:	gcc 10.2.0 OpenMPI 4.1.0 netcdf-fortran 4.5.3 CMake 3.17.3 ESMF 8.0.1
Model resolution:	GEOS-Chem Classic: 4° x 5° GCHP: c24
Meteorology fields:	MERRA-2 GEOS-Chem Classic: 4° x 5° GCHP: 0.5° x 0.625°
Initial conditions:	July 1, 2019 NOTE: GCHP c24 restart file regridded from GEOS-Chem Classic 4° x 5°
Benchmark month:	July 2019
Chemistry setup:	See fullchem.eqn
This version will impact: (select all that apply with boldface)	Emissions Photolysis Chemistry Dry Deposition Wet Deposition Advection BL Mixing Convection Meteorology Fields Other (please specify):

1-month internal benchmarks

Each update that will introduce a significant change in the full-chemistry simulation is tagged with an alpha version in Git. For each of these alpha versions, the GCST runs an internal 1-month benchmark simulation to isolate the impact from that update.

For more details on the update(s) included in each alpha version and a link to benchmark results, see this Google sheet.

1-month benchmark assessment form

Performance	GEOS-Chem Classic	GCHP
Grid resolution:	4° x 5°	C24
# CPUs, nodes:	62 CPUs 1 node (AWS)	62 CPUs 1 nodes (AWS)
Wall time:	06:24	07:39
Memory	11.4 GB	39.9 GB
Global mean OH: (% change from previous version)	13.66302413734 x 105 molec/cm3 (-0.52%)	13.66922273982 x 105 molec/cm3 (-0.55%)
Methyl chloroform lifetime: (% change from previous version)	4.514408 years (+1.03%)	4.491664 years (+0.97%)
Methane lifetime: (% change from previous version)	7.613229 years (+1.08%)	7.571283 years (+1.01%)
Details
Species, J-Values, and COLUMN AOD values that changed by 10% or more at the surface:	GEOS-Chem Classic 14.3.0 vs 14.2.3	GCHP 14.3.0 vs 14.2.3
Species and J-Values that changed by 10% or more at 500 hPa:	GEOS-Chem Classic 14.3.0 vs 14.2.3	GCHP 14.3.0 vs 14.2.3
Species and J-Values that changed by 10% or more in zonal mean:	GEOS-Chem Classic 14.3.0 vs 14.2.3	GCHP 14.3.0 vs 14.2.3
Emissions that changed by 10% or more:	GEOS-Chem Classic 14.3.0 vs 14.2.3	GCHP 14.3.0 vs 14.2.3
Overview
Below we summarize the notable changes caused by specific updates. See also the internal benchmark results which isolate impacts from specific updates. 1. Update reactions with new JPL & IUPAC recommendations Kelvin Bates wrote, "Changes to most species' concentrations are minor, but all are well-documented in the forthcoming paper. Among the largest changes are (a) faster propane oxidation resulting in lower propane mixing ratios; (b) new propane branching ratios causing higher acetone production and mixing ratios; (c) lower C1 Criegee Intermediate + H2O reaction rate causing lower HMHP production; (d) lower Peracetic acid (MAP) + OH rate causing higher MAP mixing ratios and correspondingly lower mixing ratios of PAN and acetic acid; (e) slight increases in NOx, HO2, OH, H2O2 (all <2% in the troposphere) and decreases in surface ozone (-4%) and CO (<1%) due to a whole host of competing effects from changed reaction rates." Global mean OH changed by 0.15%. 2. Interim fix for runaway HMS chemistry Differences are very small (<<1%) for most species except for HMS which increases by 3%. Global mean OH changed by 0.006%. 3. Cloud-J for computing photolysis rates as default Changes are relatively small (<3%) for all species as expected from the change from Fast-JX to Cloud-J. Global mean OH changes by 0.38%. 4. Fix bugs setting strat aerosol OD passed to Fast-JX Changes are small as expected due to J-value changes. Global mean OH changed by -0.0018%. Lizzie Lundgren wrote, "Differences in stratosphere are clustered towards poles which is consistent with the new inclusion of polar strat cloud contribution for computation of J-values." 5. Bug fix for dry deposition to snow and ice Changes are small and are mainly restricted to the polar regions. Global mean OH changes by 0.0072%. 6. Bug fix for application of FRSNO in land cover arrays Changes are very small. Global mean OH changed by -0.00045%. 7. TOMAS in GCHP Changes are on the level of numerical noise due to rebuilding the fullchem mechanism in KPP with new dummy species. Global mean OH changes by 0.0008%. 8. Add nitrate aerosol to Ox family definition in gckpp.kpp Differences are small (< 0.01%) for all species and global mean OH changes by 0.003%. These changes are introduced from rebuilding the fullchem mechanism in KPP.

1-month GEOS-Chem Classic version comparison (14.3.0 vs 14.2.3)

Below are links to plots and tables comparing 1-month simulations for GEOS-Chem Classic 14.3.0 (Dev) and GEOS-Chem Classic 14.2.3 (Ref).

Species Category	Plots					Additional Information
	Level Map		Zonal Mean		Emissions
Oxidants O3, CO, OH, NOx	sfc	500hPa	full column	stratosphere	sfc
Aerosols DST1, DST2, DST3, DST4, NH4, NIT, SO4, HMS, BCPI, BCPO, OCPI, OCPO, AERI, BrSALA, BrSALC, ISALA, ISALC, NITs, SALA, SALC, SO4s, Simple_SOA, Complex_SOA, pFe	sfc	500hPa	full column	stratosphere	column total	AOD
Bromine Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH3Br, CH2Br2, CHBr3, HOBr, HBr	sfc	500hPa	full column	stratosphere	column total
Chlorine Cly, ClOx, Cl, ClO, Cl2, Cl2O2, ClOO, ClNO2, ClNO3, CCl4, CFCs, CH3Cl, CH2Cl2, CH3CCl3, CHCl3, HOCl, HCl, Halons, HCFCs, OClO	sfc	500hPa	full column	stratosphere	--
Iodine Iy, IxOy, I, I2, IBr, ICl, IO, IONO, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO	sfc	500hPa	full column	stratosphere	column total
Nitrogen NOy, NOx, HNO2, HNO3, HNO4, MPAN, NIT, NO, NO2, NO3, N2O5, MPN, PAN, PPN, N2O, NHx, NH3, NH4, MENO3, ETNO3, IPRNO3, NPRNO3, AONITA, ETHN, BZPAN, NPHEN	sfc	500hPa	full column	stratosphere	column total
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H2, C2H4, C2H6, C3H8, PRPE, TOLU, XYLE	sfc	500hPa	full column	stratosphere	column total
Secondary Organics ACTA, ALD2, BALD, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, GLYC, GLYX, HCOOH, MAP, PHEN, RCHO, ETHP, MP	sfc	500hPa	full column	stratosphere	column total
Secondary Organic Aerosols TSOA0, TSOA1, TSOA2, TSOA3, ASOA1, ASOA2, ASOA3, ASOAN, TSOG0, TSOG1, TSOG2, TSOG3, ASOG1, ASOG2, ASOG3, INDIOL, LVOCOA, SOAIE, SOAGX, SOAP, SOAS	sfc	500hPa	full column	stratosphere	column total
Sulfur SOx, DMS, HMS, OCS, SO2, SO4	sfc	500hPa	full column	stratosphere	column total
ROy H2O2, H, H2, H2O, HO2, O1D, OH, RO2	sfc	500hPa	full column	stratosphere	--
J-values	sfc	500hPa	full column	stratosphere	--	--
Emissions by HEMCO category	Total Aircraft, Anthropogenic, Biomass Burning, Biogenic, Lightning, Natural, Ocean, Seabirds, Decaying Plants, Ship, Soil, Degassing Volcanoes, Erupting Volcanoes
Emission totals	Tables by species Tables by inventory
Global mass	Entire atmosphere Troposphere only
Metrics	OH concentration, MCF lifetime, CH4 lifetime

1-month GCHP version comparision (14.3.0 vs 14.2.3)

Below are links to plots and tables comparing 1-month simulations for GCHP 14.3.0 (Dev) and GCHP 14.2.3 (Ref).

Species Category2	Plots					Additional Information
	Level Map		Zonal Mean		Emissions
Oxidants O3, CO, OH, NOx	sfc	500hPa	full column	stratosphere	column total
Aerosols DST1, DST2, DST3, DST4, NH4, NIT, SO4, BCPI, BCPO, OCPI, OCPO, AERI, BrSALA, BrSALC, ISALA, ISALC, NITs, SALA, SALC, SO4s, Simple_SOA, Complex_SOA, pFe	sfc	500hPa	full column	stratosphere	column total	AOD
Bromine Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH3Br, CH2Br2, CHBr3, HOBr, HBr	sfc	500hPa	full column	stratosphere	column total
Chlorine Cly, ClOx, Cl, ClO, Cl2, Cl2O2, ClOO, ClNO2, ClNO3, CCl4, CFCs, CH3Cl, CH2Cl2, CH3CCl3, CHCl3, HOCl, HCl, Halons, HCFCs, OClO	sfc	500hPa	full column	stratosphere	--
Iodine Iy, IxOy, I, I2, IBr, ICl, IO, IONO, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO	sfc	500hPa	full column	stratosphere	column total
Nitrogen NOy, NOx, HNO2, HNO3, HNO4, MPAN, NIT, NO, NO2, NO3, N2O5, MPN, PAN, PPN, N2O, NHx, NH3, NH4, MENO3, ETNO3, IPRNO3, NPRNO3	sfc	500hPa	full column	stratosphere	column total
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	sfc	500hPa	full column	stratosphere	column total
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, GLYC, GLYX, HCOOH, MAP, RCHO, MP	sfc	500hPa	full column	stratosphere	column total
Secondary Organic Aerosols TSOA0, TSOA1, TSOA2, TSOA3, ASOA1, ASOA2, ASOA3, ASOAN, TSOG0, TSOG1, TSOG2, TSOG3, ASOG1, ASOG2, ASOG3, INDIOL, LVOCOA, SOAIE, SOAGX, SOAP, SOAS	sfc	500hPa	full column	stratosphere	column total
Sulfur SOx, DMS, HMS, OCS, SO2, SO4	sfc	500hPa	full column	stratosphere	column total
ROy H2O2, H, H2, H2O, HO2, O1D, OH, RO2	sfc	500hPa	full column	stratosphere	--
J-values	sfc	500hPa	full column	stratosphere	--	--
Emissions by HEMCO category	Total Aircraft, Anthropogenic, Biomass Burning, Biogenic, Lightning, Natural, Ocean, Seabirds, Decaying Plants, Ship, Soil, Degassing Volcanoes, Erupting Volcanoes
Emission totals	Tables by species Tables by inventory
Global mass	Entire atmosphere Troposphere only

1-month GCHP vs GEOS-Chem Classic comparision

Below are links to plots and tables comparing 1-month simulations for GCHP 14.3.0 (Dev) and GEOS-Chem Classic 14.3.0 (Ref).

Species Category2	Plots					Additional Information
	Level Map		Zonal Mean		Emissions
Oxidants O3, CO, OH, NOx	sfc	500hPa	full column	stratosphere	column total
Aerosols DST1, DST2, DST3, DST4, NH4, NIT, SO4, BCPI, BCPO, OCPI, OCPO, AERI, BrSALA, BrSALC, ISALA, ISALC, NITs, SALA, SALC, SO4s, Simple_SOA, Complex_SOA, pFe	sfc	500hPa	full column	stratosphere	column total	AOD
Bromine Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH3Br, CH2Br2, CHBr3, HOBr, HBr	sfc	500hPa	full column	stratosphere	column total
Chlorine Cly, ClOx, Cl, ClO, Cl2, Cl2O2, ClOO, ClNO2, ClNO3, CCl4, CFCs, CH3Cl, CH2Cl2, CH3CCl3, CHCl3, HOCl, HCl, Halons, HCFCs, OClO	sfc	500hPa	full column	stratosphere	--
Iodine Iy, IxOy, I, I2, IBr, ICl, IO, IONO, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO	sfc	500hPa	full column	stratosphere	column total
Nitrogen NOy, NOx, HNO2, HNO3, HNO4, MPAN, NIT, NO, NO2, NO3, N2O5, MPN, PAN, PPN, N2O, NHx, NH3, NH4, MENO3, ETNO3, IPRNO3, NPRNO3	sfc	500hPa	full column	stratosphere	column total
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	sfc	500hPa	full column	stratosphere	column total
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, GLYC, GLYX, HCOOH, MAP, RCHO, MP	sfc	500hPa	full column	stratosphere	column total
Secondary Organic Aerosols TSOA0, TSOA1, TSOA2, TSOA3, ASOA1, ASOA2, ASOA3, ASOAN, TSOG0, TSOG1, TSOG2, TSOG3, ASOG1, ASOG2, ASOG3, INDIOL, LVOCOA, SOAIE, SOAGX, SOAP, SOAS	sfc	500hPa	full column	stratosphere	column total
Sulfur SOx, DMS, HMS, OCS, SO2, SO4	sfc	500hPa	full column	stratosphere	column total
ROy H2O2, H, H2, H2O, HO2, O1D, OH, RO2	sfc	500hPa	full column	stratosphere	--
J-values	sfc	500hPa	full column	stratosphere	--	--
Emissions by HEMCO category	Total Aircraft, Anthropogenic, Biomass Burning, Biogenic, Lightning, Natural, Ocean, Seabirds, Decaying Plants, Ship, Soil, Degassing Volcanoes, Erupting Volcanoes
Emission totals	Tables by species Tables by inventory
Global mass	Entire atmosphere Troposphere only

1-month GCHP vs GEOS-Chem-Classic diff-of-diffs

Below are links to plots and tables comparing 1-month simulations for GCHP 14.3.0 - 14.2.3 (Dev) and GEOS-Chem Classic GCHP 14.3.0 - 14.2.3 (Ref).

Species Category2	Plots
	Level Map		Zonal Mean
Oxidants O3, CO, OH, NOx	sfc	500hPa	full column	stratosphere
Aerosols DST1, DST2, DST3, DST4, NH4, NIT, SO4, BCPI, BCPO, OCPI, OCPO, AERI, BrSALA, BrSALC, ISALA, ISALC, NITs, SALA, SALC, SO4s, Simple_SOA, Complex_SOA, pFe	sfc	500hPa	full column	stratosphere
Bromine Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH3Br, CH2Br2, CHBr3, HOBr, HBr	sfc	500hPa	full column	stratosphere
Chlorine Cly, ClOx, Cl, ClO, Cl2, Cl2O2, ClOO, ClNO2, ClNO3, CCl4, CFCs, CH3Cl, CH2Cl2, CH3CCl3, CHCl3, HOCl, HCl, Halons, HCFCs, OClO	sfc	500hPa	full column	stratosphere
Iodine Iy, IxOy, I, I2, IBr, ICl, IO, IONO, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO	sfc	500hPa	full column	stratosphere
Nitrogen NOy, NOx, HNO2, HNO3, HNO4, MPAN, NIT, NO, NO2, NO3, N2O5, MPN, PAN, PPN, N2O, NHx, NH3, NH4, MENO3, ETNO3, IPRNO3, NPRNO3	sfc	500hPa	full column	stratosphere
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	sfc	500hPa	full column	stratosphere
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, GLYC, GLYX, HCOOH, MAP, RCHO, MP	sfc	500hPa	full column	stratosphere
Secondary Organic Aerosols TSOA0, TSOA1, TSOA2, TSOA3, ASOA1, ASOA2, ASOA3, ASOAN, TSOG0, TSOG1, TSOG2, TSOG3, ASOG1, ASOG2, ASOG3, INDIOL, LVOCOA, SOAIE, SOAGX, SOAP, SOAS	sfc	500hPa	full column	stratosphere
Sulfur SOx, DMS, OCS, SO2, SO4	sfc	500hPa	full column	stratosphere
ROy H2O2, H, H2, H2O, HO2, O1D, OH, RO2	sfc	500hPa	full column	stratosphere

1-year full-chemistry benchmarks

1-year fullchem benchmark setup

The following table describes the GEOS-Chem setup for both GEOS-Chem Classic and GCHP 1-year benchmark simulations.

Git tag(s):	14.3.0-rc.0 (GEOS-Chem Classic) 14.3.0-rc.0 (GCHP)
Compared to previous benchmark:	14.2.0-rc.2
Software environment:	gcc 10.2.0 OpenMPI 4.1.0 netcdf-fortran 4.5.3 CMake 3.17.3 ESMF 8.0.1
Model resolution:	GEOS-Chem Classic: 4° x 5° GCHP: c24
Meteorology fields:	MERRA-2 GEOS-Chem Classic: 4° x 5° GCHP: 0.5° x 0.625°
Spin-up initial conditions:	January 1, 2019 from 14.0.0 10-year benchmark NOTE: GCHP c24 regridded from GEOS-Chem Classic 4° x 5°
Benchmark date:	Spin-up run: Jul 2018 - Dec 2018 Production run: Jan 2019 - Dec 2019

1-year fullchem GEOS-Chem Classic version comparison (14.3.0 vs 14.2.0)

Below are links to plots and tables comparing 1-year full-chemistry simulations for GEOS-Chem Classic 14.3.0 (Dev) and GEOS-Chem Classic 14.2.0 (Ref).

Category1	Plots					Additional Information
	Level Map		Zonal Mean		Emissions
Oxidants O3, CO, OH, NOx	Surface Annual mean Jan Apr Jul Oct	500 hPa Annual mean Jan Apr Jul Oct	Full column Annual mean Jan Apr Jul Oct	Stratosphere Annual mean Jan Apr Jul Oct	Full column Annual mean Jan Apr Jul Oct
Aerosols DST1, DST2, DST3, DST4, NH4, NIT, SO4, BCPI, BCPO, OCPI, OCPO, AERI, BrSALA, BrSALC, ISALA, ISALC, NITs, SALA, SALC, SO4s, Simple_SOA, Complex_SOA	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	AOD Annual Mean Jan Apr Jul Oct Aerosol profiles Aerosol burdens Global mean AOD
Bromine Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH4Br, CH2Br2, CH2Br2, CH3Br3, HOBr, HBr	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct
Chlorine Cly, ClOx, Cl, ClO, Cl2, Cl2O2, ClOO, ClNO2, ClNO3, CCl4, CFCs, CH3Cl, CH2Cl2, CH4CCl3, HOCl, HCl, Halons, HCFCs, OClO	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	-
Iodine Iy, IxOy, I, I2, IBr, ICl, IO, INO2, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct
Nitrogen NOy, NOx, HNO2, HNO3, HNO4, MPAN, NIT, NO, NO2, NO3, N2O5, MPN, PAN, PPN, N2O, NHx, NH3, NH4, MENO3, ETNO3, IPRNO3, NPRNO3	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, MEK, MVK, ISOPN, GLYX, HCOOH, MAP, RCHO, MP	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct
Secondary Organic Aerosols TSOA0, TSOA1, TSOA2, TSOA3, ASOA1, ASOA2, ASOA3, ASOAN, TSOG0, TSOG1, TSOG2, TSOG3, ASOG1, ASOG2, ASOG3, INDIOL, LVOCOA, SOAIE, SOAGX, SOAP, SOAS	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct
Sulfur SOx, DMS, OCS, SO2, SO4	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct
ROy H2O2, H, H2, H2O, HO2, O1D, OH, RO2	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	-
J-values	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	-
Dry deposition velocities ACET, HNO3, NH3, NH4, NIT, NITs, O3, SO4	Surface Annual Mean Jan Apr Jul Oct	500 hPa Annual Mean Jan Apr Jul Oct	Full column Annual Mean Jan Apr Jul Oct	Stratosphere Annual Mean Jan Apr Jul Oct	-
Emissions by HEMCO category	Total: Annual Mean, Jan, Apr, Jul, Oct Aircraft: Annual Mean, Jan, Apr, Jul, Oct Anthropogenic: Annual Mean, Jan, Apr, Jul, Oct Biomass burning: Annual Mean, Jan, Apr, Jul, Oct Biogenic: Annual Mean, Jan, Apr, Jul, Oct Lightning: Annual Mean, Jan, Apr, Jul, Oct Natural: Annual Mean, Jan, Apr, Jul, Oct Ocean: Annual Mean, Jan, Apr, Jul, Oct Plant decay: Annual Mean, Jan, Apr, Jul, Oct Sea birds: Annual Mean, Jan, Apr, Jul, Oct Ship: Annual Mean, Jan, Apr, Jul, Oct Soil: Annual Mean, Jan, Apr, Jul, Oct Volcano degassing: Annual Mean, Jan, Apr, Jul, Oct Volcano erupting: Annual Mean, Jan, Apr, Jul, Oct
Emission totals	Tables by species Tables by inventory
Global mass	Entire atmosphere: Jan, Apr, Jul, Oct Troposphere only: Jan, Apr, Jul, Oct
Metrics	OH concentration, MCF lifetime, CH4 lifetime O3 strat-trop exchange Tropospheric Ox budget
Model vs Observations	Aerosols: Seasonal plots, Scatter plots Aircraft: C2H6, C3H8, CO, H2O2, HNO3, NO, O3, PAN CO: Profiles Latitudal distribution Ships Seasonal plots: Surface, MOZAIC 4 levels O3: Profiles: GMI, MOZAIC Seasonal plots: EBAS surface O3, 2019 (see ebas-data.nilu.no) — new in 14.2.0 Historical seasonal plots: Surface, GMI 3 levels, GMI 4 levels, MOZAIC 3 levels, MOZAIC 4 levels PAN: Profiles PM2.5 with simple SOA: Maps, Scatter plots PM2.5 with complex SOA: Maps, Scatter plots

1-year fullchem GCHP vs GEOS-Chem Classic comparison

NOTE: Benchmark plots will be posted as soon as the 14.3.0 GCHP 1-yr benchmark finishes! Please disregard the links below for the time being.

Below are links to plots and tables comparing 1-year full-chemistry simulations for GCHP 14.2.0 (Dev) and GEOS-Chem Classic 14.2.0 (Ref).

1-year fullchem GCHP version comparison (14.3.0 vs 14.2.0)

NOTE: Benchmark plots will be posted as soon as the 14.3.0 GCHP 1-yr benchmark finishes! Please disregard the links below for the time being.

Below are links to plots and tables comparing 1-year full-chemistry simulations for GCHP 14.2.0 (Dev) and GCHP 14.0.0 (Ref).