Difference between revisions of "GEOS-Chem 14.0.0"

Revision as of 18:47, 12 January 2023

This page includes information about GEOS-Chem 14.0.0..

Feature	Contributor(s)	Model scope	Notes and references
Updates that will affect full-chemistry benchmark simulations
Fix bugs causing differences when splitting up GC-Classic and GCHP simulations in time	Lizzie Lundgren (Harvard)	Initialization	geoschem/geos-chem PR #1229 GCHP fullchem simulations now identical if broken up in time Differences in GC-Classic persist due to I/O precision limitation of HEMCO
Remove unnecessary met-fields from GC-Classic restart file that caused incorrect initial meteorology	Lizzie Lundgren (Harvard)	Initialization	geoschem/geos-chem PR #1389
Fix GC-Classic pressure fixer bug causing high ozone bias over poles in 13.4 global simulations	Lizzie Lundgren (Harvard)	Meteorology	geoschem/geos-chem PR #1250 GC-Classic only
Fix dry deposition of methanol over oceans	Lizzie Lundgren (Harvard) Kelvin Bates (Harvard)	Dry deposition	geoschem/geos-chem PR #1389
Add missing entries for POG and pFe in HEMCO_Config.rc	Charley Fite (FSU) Melissa Sulprizio (Harvard)	Emissions	geoschem/geos-chem PR #1299
Updates that will NOT affect full-chemistry benchmark simulations
Updated offline biogenic VOC emissions NOTE: Offline emissions are not used for benchmark simulations	Hongjian Weng (PKU)	Emissions	geoschem/geos-chem PR #1281
Updated offline soil NOx emissions NOTE: Offline emissions are not used for benchmark simulations	Hongjian Weng (PKU)	Emissions	geoschem/geos-chem PR #1281
Replace input.geos with geoschem_config.yml	Bob Yantosca (Harvard)	Input files	geoschem/geos-chem PR #1128
Update to KPP 2.5.0	Bob Yantosca (Harvard)	Structural	geoschem/geos-chem PR #1258
Change 4D State_Chm%Species array to vector of 3D concentration arrays	Lizzie Lundgren (Harvard)	Structural	geoschem/geos-chem PR #990
Fix to save boundary conditions on first timestep	Eloise Marais (UCL)	Diagnostics	geoschem/geos-chem PR #1268
Fix bug in total OC diagnostic	Lizzie Lundgren (Harvard)	Diagnostics	geoschem/geos-chem PR #1229
Avoid div-by-zero in routine MMR_Compute_Flux	Bob Yantosca (Harvard)	Bug fix	geoschem/geos-chem PR #1216
Minor HEMCO updates, including: Strip tabs from HEMCO configuration file Change default diagnostic counter warning level Add fixes for generating HEMCO standalone run directory	Bob Yantosca (Harvard) Lizzie Lundgren (Harvard) Melissa Sulprizio (Harvard)	Structural	geoschem/HEMCO PR #151 geoschem/HEMCO PR #148 geoschem/HEMCO PR #155
Fix compilation errors with the KPP/custom mechanism	Lixu Jin (U. Montana) Bob Yantosca (Harvard)	User-built custom mechanisms with KPP	geoschem/geos-chem PR #1333 geoschem/geos-chem #1332
Bug fixes for the Hg simulation via KPP	Ari Feinberg (MIT) Viral Shah (GMAO) Bob Yantosca (Harvard)	Hg simulation	geoschem/geos-chem PR #1356 geoschem/geos-chem PR #1336 geoschem/geos-chem #1285 geoschem/geos-chem #1350
Updates for GEOS from GMAO	Christoph Keller (GMAO)	GEOS	geoschem/geos-chem PR #1328
Updates for GEOS-Chem and HEMCO in CESM	Thibaud Fritz (MIT) Lizzie Lundgren (Harvard) Haipeng Lin (Harvard)	CESM	geoschem/geos-chem PR #1164 geoschem/geos-chem PR #1344 geoschem/hemco PR #158 geoschem/hemco PR #161
Updates for GEOS-Chem in WRF-GC	Haipeng Lin (Harvard)	WRF-GC	geoschem/geos-chem PR #1354 geoschem/HEMCO PR #161
Bug fix: Remove duplicate SO4 in the KPP aciduptake.eqn file	Tomas Sherwen (York)	Bug fix	geoschem/geos-chem PR #1339
Bug fix: Update HEMCO_Config.rc file to read newer CEDS data for the CO2 specialty simulation	Bob Yantosca (Harvard)	Bug fix	geoschem/geos-chem #1358
Bug fix in run directory creation for simulations with GCAP2 meteorology	Lee Murray (U. Rochester)	Run directory creation	geoschem/geos-chem PR #1362 geoschem/geos-chem PR #1360 geoschem/geos-chem #1323
Automated GEOS-Chem user registration (at first-time run directory creation)	Lucas Estrada (Harvard)	Run directory creation	geoschem/geos-chem PR #1279
Updates that will only affect GCHP
Upgrade GMAO libraries in GCHP	Liam Bindle (WUStL) Lizzie Lundgren (Harvard)	Structural	geoschem/GCHP PR #214
Add option to use native GEOS-FP met fields in GCHP Includes choice of mass fluxes or derived winds for advection	Liam Bindle (WUStL)	Met fields	geoschem/geos-chem PR #1230
Run directory updates to easily break up GCHP runs in time	Lizzie Lundgren (Harvard)	Structural	geoschem/geos-chem PR #1259
Bug fixes for MEGAN HEMCO extension	Lizzie Lundgren (Harvard)	Emissions	geoschem/HEMCO PR #140
Vertical Mass Flux Diagnostic to be Scaled By 1/Dt	Liam Bindle (WUStL)	Diagnostics	geoschem/GCHP PR #248
Bug fix: Fix typo in path for Volcano_Table in GCHP run directory creation	Killian Murphy (York)	Bug fix	geoschem/geos-chem #1350
Bug fix: GCHP run directories incorrectly used MERRA2 if selecting GEOS-FP	Liam Bindle (WUStL)	Bug fix	geoschem/geos-chem PR #1224

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
GEOS-FP	All	Native GEOS-FP met fields at c720 resolution (~12 km), includes mass fluxes and derived winds. Using these fields is an option in GCHP.	`GEOS_C720`
OFFLINE_BIOVOC	Full-chemistry; Aerosols	Updated offline biogenic VOC emissions to include the following updates based on GEOS-Chem 13.2.0: Use new version Yuan-processed MODIS LAI (v2021-06); Fix the unit bug for soil NOx emission; Add methanol (MOH); All emissions are now all in kg species/m2/s instead of kgC/m2/s	`HEMCO/OFFLINE_BIOVOC/v2021-12`
OFFLINE_SOILNOX	Full-chemistry	Updated offline soil NOx emissions to include the following updates based on GEOS-Chem 13.2.0: Fix the unit bug for soil NOx emission; All emissions are now all in kg species/m2/s instead of kgN/m2/s	`HEMCO/OFFLINE_SOILNOX/v2021-12`
GEOSCHEM_RESTARTS	Full-chemistry; TransportTracers	Updated restart files to ones saved out from 1-year benchmarks for 14.0.0-rc.3	`GEOSCHEM_RESTARTS/GC_14.0.0`

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: 14.0.0-rc.3 (aka 14.0.0-alpha.10) GCHP: 14.0.0-rc.3 (aka 14.0.0-alpha.10) HEMCO: 3.5.0-rc.3
Compared to previous benchmark:	13.4.0-rc.4
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 c48 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): Initial conditions

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:	06:34:40	06:31:28
Global mean OH: (% change from previous version)	11.97993514227 x 10⁵ molec/cm3 (-0.52%)	11.96980993701 x 10⁵ molec/cm3 (-0.01%)
Methyl chloroform lifetime: (% change from previous version)	5.153411 years (+0.43%)	5.139423 years (+0.024%)
Methane lifetime: (% change from previous version)	8.684125 years (+0.41%)	8.656943 years (+0.027%)
Details
Species, J-Values, and COLUMN AOD values that changed by 10% or more at the surface:	GEOS-Chem Classic 14.0.0 vs 13.4.0	GCHP 14.0.0 vs 13.4.0
Species and J-Values that changed by 10% or more at 500 hPa:	GEOS-Chem Classic 14.0.0 vs 13.4.0	GCHP 14.0.0 vs 13.4.0
Species and J-Values that changed by 10% or more in zonal mean:	GEOS-Chem Classic 14.0.0 vs 13.4.0	GCHP 14.0.0 vs 13.4.0
Emissions that changed by 10% or more:	GEOS-Chem Classic 14.0.0 vs 13.4.0	GCHP 14.0.0 vs 13.4.0
Overview
Below we summarize the notable changes caused by specific updates. See also the internal benchmark results which isolate impacts from specific updates. 1. Fix GC-Classic pressure fixer bug that caused high ozone bias over poles in 13.4.0 global simulations This fix addressed the high O3 bias over the poles and decreased O3 by up to 10 ppb at high latitudes as shown in this plot. Global mean OH concentrations changed by -0.49% with this fix. This bug was identified when examining large differences in GEOS-Chem Classic vs GCHP that were introduced in 13.4.0. The decreases in O3 seen in GEOS-Chem Classic in this version largely correct the increases in O3 in GEOS-Chem Classic observed in 13.4.0 2. Fix dry deposition of methanol over oceans This fix removed double counting of MOH dry deposition over the oceans and therefore caused a slight increase in MOH concentrations over the oceans. See this plot. Global mean OH concentrations changed by -0.02% with this fix. 3. Add missing entries for POG and pFe in HEMCO_Config.rc This update increases pFe concentrations and emissions totals. In particular, entries for pFe were added for the AEIC2019, which are on by default in benchmark simulations causing the following increase in total pFe emissions: pFe Total : 0.006824 0.006851 0.000028 0.405 NOTE: POG1 and POG2 are only utilized in complex SOA with SVPOA simulations so changing those species does not impact the benchmark output. 4. Fixes incorrect AOD wavelength used in Fast-JX for aerosol/dust This fix causes small differences in AOD for OCPI, SO4, ISOP, and stratospheric liquid aerosol as shown in these plots. Other differences in AOD between 13.4.0 and 14.0.0 are primarily caused by the larger changes from the GEOS-Chem Classic pressure fixer bug. 5. Fix bugs causing differences when splitting up GC-Classic and GCHP simulations in time Small differences were introduced by the these fixes because of impacts on initial conditions.

1-month GEOS-Chem Classic version comparison (14.0.0 vs 13.4.0)

Below are links to plots and tables comparing 1-month simulations for GEOS-Chem Classic 14.0.0-rc.3 (Dev) and GEOS-Chem Classic 13.4.0-rc.4 (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 comparison (14.0.0 vs 13.4.0)

Below are links to plots and tables comparing 1-month simulations for GCHP 14.0.0-rc.3 (Dev) and GCHP 13.4.0-rc.4 (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 comparison

Below are links to plots and tables comparing 1-month simulations for GCHP 14.0.0-rc.3 (Dev) and GEOS-Chem Classic 14.0.0-rc.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 diff-of-diffs

Below are links to plots and tables comparing 1-month simulations for GCHP 14.0.0-rc.3 - 13.4.0-rc.4 (Dev) and GEOS-Chem Classic GCHP 14.0.0-rc.3 - 13.4.0-rc.4 (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):	14.0.0-rc.0 (GEOS-Chem Classic) 14.0.0-rc.1 (GCHP)
Compared to previous benchmark:	13.4.0
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 c48 regridded from GEOS-Chem Classic 4° x 5°
Benchmark date:	Spin-up run: Jan 2010 - Dec 2018 Production run: Jan 2019 - Dec 2019

1-year fullchem GEOS-Chem Classic version comparison (14.0.0 vs 13.4.0)

Below are links to plots and tables comparing 1-year full-chemistry simulations for GEOS-Chem Classic 14.0.0-rc.3 (Dev) and GEOS-Chem Classic 13.4.0-rc.4 (Ref).

Category¹	Plots					Additional Information
	Level Map		Zonal Mean		Emissions
Oxidants O3, CO, OH, NOx	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct	AOD 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-
Iodine Iy, IxOy, I, I2, IBr, ICl, IO, INO2, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, MEK, MVK, ISOPN, GLYX, HCOOH, MAP, RCHO, MP	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Sulfur SOx, DMS, OCS, SO2, SO4	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
ROy H2O2, H, H2, H2O, HO2, O1D, OH, RO2	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-
J-values	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-

Emissions by HEMCO category	Total: Jan, Apr, Jul, Oct Aircraft: Jan, Apr, Jul, Oct Anthropogenic: Jan, Apr, Jul, Oct Biomass burning: Jan, Apr, Jul, Oct Biogenic: Jan, Apr, Jul, Oct Lightning: Jan, Apr, Jul, Oct Natural: Jan, Apr, Jul, Oct Ocean: Jan, Apr, Jul, Oct Plant decay:Jan, Apr, Jul, Oct Sea birds: Jan, Apr, Jul, Oct Ship: Jan, Apr, Jul, Oct Soil: Jan, Apr, Jul, Oct Volcano degassing: Jan, Apr, Jul, Oct Volcano erupting: 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 (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

Below are links to plots and tables comparing 1-year full-chemistry simulations for GCHP 14.0.0-rc.3 (Dev) and GEOS-Chem Classic 14.0.0-rc.3 (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	Column total 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, pFe	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	Column total Annual mean Jan Apr Jul Oct	AOD Annual mean Jan Apr Jul Oct 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	Column total 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	Column total 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	Column total 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	Column total Annual mean Jan Apr Jul Oct
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, GLYC, 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	Column total 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	Column total 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	Column total 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	-

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 2019, Jan 2020 Troposphere only: Jan 2019, Jan 2020
Metrics	OH concentration, MCF lifetime, CH4 lifetime

1-year transport tracers benchmarks

1-year transport benchmark setup

The following table describes the setup for the GEOS-Chem Classic 1-year transport tracer benchmark simulation.

Git tag(s):	14.0.0-rc.3
Compared to previous benchmark:	13.2.0-beta.0
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:	4° x 5°
Meteorology fields:	MERRA-2 4° x 5°
Spin-up initial conditions:	January 1, 2019 from GEOS-Chem 13.0.0 1-year transport tracer benchmark
Benchmark date:	Spinup run: Jan 2009 - Dec 2018 Production run: Jan 2019 - Dec 2019

1-year transport GEOS-Chem Classic version comparison (14.0.0 vs 13.2.0)

This table contains plots comparing 1-year transport tracer simulations for GEOS-Chem Classic 14.0.0-rc.3 (Dev) and GEOS-Chem Classic 13.2.0-beta.0 (Ref).

Category¹	Plots
	Level Map		Zonal Mean
RnPbBeTracers Rn222, Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean
PassiveTracers PassiveTracer, SF6Tracer, CH3ITracer, COAnthroEmis25dayTracer, COAnthroEmis50dayTracer, COUniformEmis25dayTracer, GlobEmis90dayTracer, NHEmis90dayTracer, SHEmis90dayTrace	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean
WetLossConv Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean
WetLossLS Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean

Pb-Be Budgets	GEOS-Chem 13.2.0-beta.0 (Ref): Troposphere Stratosphere Troposphere + Stratosphere		GEOS-Chem 14.0.0-rc.3 (Dev): Troposphere Stratosphere Troposphere + Stratosphere
Strat-trop exchange	GEOS-Chem 13.2.0-beta.0 (Ref): Monthly and annual mean values		GEOS-Chem 14.0.0-rc.3(Dev): Monthly and annual mean values
Mass conservation	Passive tracer

1-year transport GCHP version comparison (14.0.0 vs 13.2.0)

This table contains plots comparing 1-year transport tracer simulations for GCHP 14.0.0-rc.3 (Dev) and GCHP 13.2.0-beta.1 (Ref).

Category¹	Plots
	Level Map		Zonal Mean
RnPbBeTracers Rn222, Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean
PassiveTracers PassiveTracer, SF6Tracer, CH3ITracer, COAnthroEmis25dayTracer, COAnthroEmis50dayTracer, COUniformEmis25dayTracer, GlobEmis90dayTracer, NHEmis90dayTracer, SHEmis90dayTrace	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean
WetLossConv Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean
WetLossLS Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean

Pb-Be Budgets	GCHP 13.2.0-beta.0 (Ref): Troposphere Stratosphere Troposphere + Stratosphere		GCHP 14.0.0-rc.3 (Dev): Troposphere Stratosphere Troposphere + Stratosphere
Mass conservation	GCHP 13.2.0-beta.1 (Ref): Passive tracer		GCHP 14.0.0-rc.3 (Dev): Passive tracer

1-year transport GCHP vs GEOS-Chem Classic comparison

This table contains plots comparing 1-year transport tracer simulations for GCHP 14.0.0-rc.3 (Dev) and GCClassic 14.0.0-rc.3 (Ref).

Category¹	Plots
	Level Map		Zonal Mean
RnPbBeTracers Rn222, Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean
PassiveTracers PassiveTracer, SF6Tracer, CH3ITracer, COAnthroEmis25dayTracer, COAnthroEmis50dayTracer, COUniformEmis25dayTracer, GlobEmis90dayTracer, NHEmis90dayTracer, SHEmis90dayTrace	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean
WetLossConv Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean
WetLossLS Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat	Surface Jan Apr Jul Oct Mean	500 hPa Jan Apr Jul Oct Mean	Full column Jan Apr Jul Oct Mean	Stratosphere Jan Apr Jul Oct Mean

Pb-Be Budgets	GCHP 13.2.0-beta.0 (Ref): Troposphere Stratosphere Troposphere + Stratosphere		GCHP 14.0.0-rc.3 (Dev): Troposphere Stratosphere Troposphere + Stratosphere
Mass conservation	GCClassic 14.0.0-rc.3 (Ref): Passive tracer		GCHP 14.0.0-rc.3 (Dev): Passive tracer

10-year full-chemistry benchmarks

10-year fullchem benchmark setup

The following table describes the GEOS-Chem setup for both GEOS-Chem Classic and GCHP 10-year benchmark simulations.

Git tag(s):	14.0.0-rc.3
Compared to previous benchmark:	13.0.0 10-year benchmark
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:	January 1, 2020 from 14.0.0-rc.3 1-year benchmarks NOTE: GCHP c24 restart file regridded from GEOS-Chem Classic 4° x 5°
Benchmark date:	Jan 2010 - Dec 2019

Model output for 2010-2019

Output from the 10-year benchmarks can be accessed using the links below.

GCClassic	Monthly mean diagnostics Restart files
GCHP	Monthly mean diagnostics Restart files

The monthly mean output includes several diagnostics, including AerosolMass, Aerosols, JValues, ProsLoss, and SpeciesConc among many others. These output are used as input in the aerosol-only, CH4, POPs, tagCH4, tagCO, tagO3 starting in GEOS-Chem 14.0.2.

The restart files may be used to initialize full-chemistry GEOS-Chem simulations. For more information see the Restart files chapter of geos-chem.readthedocs.io.

10-year fullchem GEOS-Chem Classic version comparison (14.0.0 vs 13.0.0)

Below are links to plots and tables comparing the final year (2019) of a 10-year full-chemistry simulation with GEOS-Chem Classic 14.0.0-rc.3 (Dev) vs 13.0.0-rc.0 (Ref).

Category¹	Plots					Additional Information
	Level Map		Zonal Mean		Emissions
Oxidants O3, CO, OH, NOx	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct	AOD 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-
Iodine Iy, IxOy, I, I2, IBr, ICl, IO, INO2, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, MEK, MVK, ISOPN, GLYX, HCOOH, MAP, RCHO, MP	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Sulfur SOx, DMS, OCS, SO2, SO4	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
ROy H2O2, H, H2, H2O, HO2, O1D, OH, RO2	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-
J-values	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-

Emissions by HEMCO category	Total: Jan, Apr, Jul, Oct Aircraft: Jan, Apr, Jul, Oct Anthropogenic: Jan, Apr, Jul, Oct Biomass burning: Jan, Apr, Jul, Oct Biogenic: Jan, Apr, Jul, Oct Lightning: Jan, Apr, Jul, Oct Natural: Jan, Apr, Jul, Oct Ocean: Jan, Apr, Jul, Oct Plant decay:Jan, Apr, Jul, Oct Sea birds: Jan, Apr, Jul, Oct Ship: Jan, Apr, Jul, Oct Soil: Jan, Apr, Jul, Oct Volcano degassing: Jan, Apr, Jul, Oct Volcano erupting: 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 (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
Stratosphere	Age of air Daily GEOS-Chem vs OMI: NO2, O3 Daily GEOS-Chem vs MLS: CH3Cl, ClO, H2O, HCl, HNO3, N2O, O3 Seasonal column at poles Compare to Figure 2 of Solomon et al. (2015)

10-year fullchem GCHP version comparison (14.0.0 vs 13.0.0)

Below are links to plots and tables comparing the final year (2019) of a 10-year full-chemistry simulation with GCHP 14.0.0-rc.3 (Dev) vs 13.0.0-rc.0 (Ref).

Category¹	Plots					Additional Information
	Level Map		Zonal Mean		Emissions
Oxidants O3, CO, OH, NOx	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct	AOD Jan Apr Jul Oct Aerosol burdens Global mean AOD
Bromine Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH4Br, CH2Br2, CH2Br2, CH3Br3, HOBr, HBr	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-
Iodine Iy, IxOy, I, I2, IBr, ICl, IO, INO2, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, MEK, MVK, ISOPN, GLYX, HCOOH, MAP, RCHO, MP	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Sulfur SOx, DMS, OCS, SO2, SO4	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
ROy H2O2, H, H2, H2O, HO2, O1D, OH, RO2	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-
J-values	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-

Emissions by HEMCO category	Total: Jan, Apr, Jul, Oct Aircraft: Jan, Apr, Jul, Oct Anthropogenic: Jan, Apr, Jul, Oct Biomass burning: Jan, Apr, Jul, Oct Biogenic: Jan, Apr, Jul, Oct Lightning: Jan, Apr, Jul, Oct Natural: Jan, Apr, Jul, Oct Ocean: Jan, Apr, Jul, Oct Plant decay:Jan, Apr, Jul, Oct Sea birds: Jan, Apr, Jul, Oct Ship: Jan, Apr, Jul, Oct Soil: Jan, Apr, Jul, Oct Volcano degassing: Jan, Apr, Jul, Oct Volcano erupting: 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 Tropospheric Ox budget
Stratosphere	Age of air Monthly GEOS-Chem vs OMI: O3 Monthly GEOS-Chem vs MLS: CH3Cl, H2O, HCl, HNO3, N2O, O3

10-year fullchem GCHP vs GEOS-Chem Classic comparison

Below are links to plots and tables comparing the final year (2019) of 10-year full-chemistry simulations with GCHP 14.0.0 (Dev) and GEOS-Chem Classic 14.0.0 (Ref).

Category¹	Plots					Additional Information
	Level Map		Zonal Mean		Emissions
Oxidants O3, CO, OH, NOx	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct	AOD Jan Apr Jul Oct
Bromine Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH4Br, CH2Br2, CH2Br2, CH3Br3, HOBr, HBr	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-
Iodine Iy, IxOy, I, I2, IBr, ICl, IO, INO2, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, MEK, MVK, ISOPN, GLYX, HCOOH, MAP, RCHO, MP	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column 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 Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
Sulfur SOx, DMS, OCS, SO2, SO4	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	Full column Jan Apr Jul Oct
ROy H2O2, H, H2, H2O, HO2, O1D, OH, RO2	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-
J-values	Surface Jan Apr Jul Oct	500 hPa Jan Apr Jul Oct	Full column Jan Apr Jul Oct	Stratosphere Jan Apr Jul Oct	-

Emissions by HEMCO category	Total: Jan, Apr, Jul, Oct Aircraft: Jan, Apr, Jul, Oct Anthropogenic: Jan, Apr, Jul, Oct Biomass burning: Jan, Apr, Jul, Oct Biogenic: Jan, Apr, Jul, Oct Lightning: Jan, Apr, Jul, Oct Natural: Jan, Apr, Jul, Oct Ocean: Jan, Apr, Jul, Oct Plant decay:Jan, Apr, Jul, Oct Sea birds: Jan, Apr, Jul, Oct Ship: Jan, Apr, Jul, Oct Soil: Jan, Apr, Jul, Oct Volcano degassing: Jan, Apr, Jul, Oct Volcano erupting: 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
Stratosphere	Age of air Monthly GEOS-Chem vs OMI: O3 Daily GEOS-Chem vs MLS: CH3Cl, H2O, HCl, HNO3, N2O, O3

@@ Line 2,587: / Line 2,587: @@
 |}
+=== Model output for 2010-2019 ===
+Output from the 10-year benchmarks can be accessed using the links below.
+{| border=1 cellspacing=0 cellpadding=5
+|-valign="top"
+|bgcolor="#CCCCCC"|'''GCClassic'''
+|
+* [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCClassic/OutputDir/ Monthly mean diagnostics]
+* [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCClassic/Restarts/ Restart files]
+|-valign="top"
+|bgcolor="#CCCCCC"|'''GCHP'''
+|
+* [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/OutputDir/ Monthly mean diagnostics]
+* [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/Restarts.tar.gz Restart files]
+|}
+The monthly mean output includes several diagnostics, including [[History_collections_for_aerosols#The_AerosolMass_collection|AerosolMass]], [[History_collections_for_aerosols#The_Aerosols_collection|Aerosols]], [[History_collections_for_chemistry_and_photolysis#The_JValues_collection|JValues]], [[History_collections_for_chemistry_and_photolysis#The_ProdLoss_Collection|ProsLoss]], and [[History_collections_for_species_concentrations#The_SpeciesConc_collection|SpeciesConc]] among many others. These output are used as input in the aerosol-only, CH4, POPs, tagCH4, tagCO, tagO3 starting in [[GEOS-Chem_14.0.2|GEOS-Chem 14.0.2]].
+The restart files may be used to initialize full-chemistry GEOS-Chem simulations. For more information see the [https://geos-chem.readthedocs.io/en/latest/gcc-guide/04-data/restart-files-gc.html#where-can-i-get-a-restart-file-for-my-simulationl '''Restart files''' chapter of geos-chem.readthedocs.io].
 === 10-year fullchem GEOS-Chem Classic version comparison (14.0.0 vs 13.0.0) ===
@@ Line 3,847: / Line 3,871: @@
 |colspan="6"|
 [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Tables/OH_metrics.txt OH concentration, MCF lifetime, CH4 lifetime]
-|-valign="top"
-|Budgets
-|colspan="6"|Budgets after operations: [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Tables/Budgets_After_Operations_Jan2019.txt Jan], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Tables/Budgets_After_Operations_Apr2019.txt Apr], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Tables/Budgets_After_Operations_Jul2019.txt Jul], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Tables/Budgets_After_Operations_Oct2019.txt Oct]
 |-
 |Stratosphere
 |colspan="6"|
-*Age of air
+*[http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/ClockTracer_GCClassic_vs_GCHP_14.0.0-rc.3.png Age of air]
-*Daily GEOS-Chem vs OMI: [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/OMI_NO2_GCC_14.0.0_vs_GCHP_14.0.0.png NO2], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/OMI_O3_GCC_14.0.0_vs_GCHP_14.0.0.png O3]
+*Monthly GEOS-Chem vs OMI: [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/OMI_O3_GCClassic_vs_GCHP_14.0.0-rc.3.png O3]
-*Daily GEOS-Chem vs MLS: [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_CH3Cl_GCC_14.0.0_vs_GCHP_14.0.0.png CH3Cl], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_ClO_GCC_14.0.0_vs_GCHP_14.0.0.png ClO], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_H2O_GCC_14.0.0_vs_GCHP_14.0.0.png H2O], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_HCl_GCC_14.0.0_vs_GCHP_14.0.0.png HCl], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_HNO3_GCC_14.0.0_vs_GCHP_14.0.0.png HNO3], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_N2O_GCC_14.0.0_vs_GCHP_14.0.0.png N2O], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_O3_GCC_14.0.0_vs_GCHP_14.0.0.png O3]
+*Daily GEOS-Chem vs MLS: [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_CH3Cl_GCClassic_vs_GCHP_14.0.0-rc.3.png CH3Cl],  [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_H2O_GCClassic_vs_GCHP_14.0.0-rc.3.png H2O], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_HCl_GCClassic_vs_GCHP_14.0.0-rc.3.png HCl], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_HNO3_GCClassic_vs_GCHP_14.0.0-rc.3.png HNO3], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_N2O_GCClassic_vs_GCHP_14.0.0-rc.3.png N2O], [http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/MLS_O3_GCClassic_vs_GCHP_14.0.0-rc.3.png O3]
-*[http://ftp.as.harvard.edu/gcgrid/geos-chem/10yr_benchmarks/14.0.0/GCHP/BenchmarkResults/GCHP_GCC_comparison/Stratosphere/Poles_Solomon2015_GCC_14.0.0_vs_GCHP_14.0.0.png Seasonal column at poles]
-**Compare to Figure 2 of [https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2015JD023365 Solomon et al. (2015)]
 |}