GEOS-Chem 14.6.0

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Version overview

  • This is the current stable release of GEOS-Chem
  • Release date: 18 Apr 2025

This page includes information about GEOS-Chem 14.6.0. For a list of updates prioritized for future versions, please see our GEOS-Chem model development priorities page.

Model GitHub Release Page DOI
GEOS-Chem Classic 14.6.0 https://github.com/geoschem/GCClassic/releases/tag/14.6.0 10.5281/zenodo.4437678
GCHP 14.6.0 https://github.com/geoschem/GCHP/releases/tag/14.6.0 10.5281/zenodo.15243297

Submodule updates this version

The following submodules were updated to new versions in this release.

Submodule version GitHub release page DOI
GEOS-Chem 14.6.0 https://github.com/geoschem/geos-chem/releases/tag/14.6.0 10.5281/zenodo.15242410
HEMCO 3.11.0 https://github.com/geoschem/HEMCO/releases/tag/3.11.0 10.5281/zenodo.15242231
Cloud-J 8.0.2 https://github.com/geoschem/Cloud-J/releases/tag/8.0.2 10.5281/zenodo.15085795

What's new in this version

Updates that will affect full-chemistry benchmark simulations

Feature Contributor(s) Model scope Notes and references
Aerosol table updates for mineral dust Inderjeet Singh (WashU) Convection
Fixed PDOWN definition and re-evaporation requirement for washout Yuanjian Zhang (WashU) Convection
Now define the dry deposition land cover type properly for O3 deposition to oceans Eloise Marais (UCL)
Bob Yantosca (Harvard) 		Dry deposition
Output sea flux species dry deposition velocity with DryDep collection Eloise Marais (UCL)
Bob Yantosca (Harvard) 		Dry deposition
  • geos-chem PR #2606
  • NOTE: This update only affects the DryDepVel diagnostic, for species such as ACET that have sea-air deposition applied by HEMCO.
Fix CEDS TMB emissions Kelvin Bates (CU Boulder) Emissions
HEMCO online dust extensions (DustDead, Tomas_DustDead) now use USTAR directly from met field input instead of computing it from winds Yuanjian Zhang (WashU)
Bob Yantosca (Harvard) 		Emissions
New version of CEDS at 0.1 x 0.1 degree resolution Dandan Zhang (WashU) Emissions
Bug fix: Emit C6H14 (hexanes) into ALK6 in CEDS 0.1 degree, CMIP, HTAP inventories Bob Yantosca (Harvard) Emissions
Make GC-Classic bit-for-bit reproducible upon restart
(part 1 of 2) 		Lizzie Lundgren (Harvard) GC-Classic

Updates that will NOT affect full-chemistry benchmark simulations

Feature Contributor(s) Model scope Notes and references
Need to increase memory for GCHP cloud benchmarks in GitHub action YAML file Bob Yantosca (Harvard) Benchmarking
  • GCHP benchmarks w/ CEDS 0.1 degree emissions exceeded a memory limit, causing the 1-hr and 1-month benchmarks to fail.
  • GCHP PR #470 fixes this issue.
Set a C-preprocessor switch so that we can block out code specific to the KPP rosenbrock_autoreduce integrator Bob Yantosca (Harvard) Build
Need to increase memory for GCHP cloud benchmarks in GitHub action YAML file Bob Yantosca (Harvard) Benchmarking
  • GCHP benchmarks w/ CEDS 0.1 degree emissions exceeded a memory limit, causing the 1-hr and 1-month benchmarks to fail.
Add fix to recompute CH4 reservoir emissions monthly to properly apply seasonality Melissa Sulprizio (Harvard) Carbon gases
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Tia Scarpelli (Carbon Mapper)
Melissa Sulprizio (Harvard) 		Carbon gases
Emissions
Add fixes to eliminate differences between the carbon simulation and individual CO2, CH4, and CO simulations Melissa Sulprizio (Harvard) Carbon gases
Now allow RxnRate and RxnConst to use four-digit reaction numbers Alfred Mayhew (Utah) Diagnostics
Fix bugs in fixed level and PBL budget diagnostics Lizzie Lundgren (Harvard) Diagnostics
Fix UVFlux diagnostics when using Cloud-J Lizzie Lundgren (Harvard) Diagnostics
Fixed incorrect description metadata for FluxHg0FromOceanToAir and FluxHg0FromAirToOcean diagnostics Ben Geyman (Harvard) Diagnostics
Add SatDiagnPMID diagnostic to save pressure at level midpoints for the SatDiagn collection Jared Brewer (U. Minnesota) Diagnostics
Fix dry-run simulation issues in 14.6.0 development version Bob Yantosca (Harvard) Dry-run
Add #ifdef MODEL_BCC C-preprocessor switches to enable interface with the Beijing Climate Centre model Bob Yantosca (Harvard) External models
Check if mass flux is top-down and flip accordingly to enable processed mass flux Yuanjian Zhang (WashU) GCHP
Add linter (error-checker) for GitHub Actions in GCClassic Joe Wallwork (U. Cambridge) GitHub
Fix improper handling of date timestamps and lat/lon bounds for mask files Bob Yantosca (Harvard) HEMCO
Update KPP/CMakeLists.txt to only compile KPP-Standalone if configured with -DKPPSA=y Bob Yantosca (Harvard) KPP-Standalone
Capability to run GCClassic nested-grid simulations at 0.125x0.15625 resolution Melissa Sulprizio (Harvard)
Xiaolin Wang (Harvard) 		Nested grid
Remove goto statements in drydep_mod.F90 Bob Yantosca (Harvard) Structural
Rebuild chemical mechansims with KPP 3.2.0 (and update KPP-Standalone accordingly) Bob Yantosca (Harvard) Structural
Fix issues causing fullchem_alldiags integration tests to differ Bob Yantosca (Harvard) Testing
Fix GC-Classic TOMAS slowness introduced in 14.4.0 Lizzie Lundgren (Harvard)
Bob Yantosca (Harvard)
Betty Croft (WashU) 		TOMAS
Bug fix: Update paths to CEDS_CO_25 emissions in ExtData.rc.TransportTracers Bob Yantosca (Harvard) TransportTracers (GCHP only)

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
Aerosol optics aerosol-only
fullchem
  • Updated dust.dat with new values for mineral dust submitted by Inderjeet Singh (WashU). See geos-chem PR #2657 for more information.
  • CHEM_INPUTS/Aerosol_Optics/v2025-03
CEDS_01x01 most simulations
  • CEDS emissions at 0.1° x 0.1° degree resolution
  • HEMCO/CEDS/v2024-06
CLOUD-J inputs fullchem
Hg
  • Updated FJX_scat-aer.dat with new values for mineral dust submitted by Inderjeet Singh (WashU). See geos-chem PR #2657 for more information.
  • CHEM_INPUTS/CLOUD_J/v2025-01
  • CHEM_INPUTS/CLOUD_J/v2025-01-Hg
GFEIv3 carbon
CH4
  • HEMCO/CH4/v2025-04

Species changes

Species metric 14.5.0 14.6.0 Change % Change
Total # species 372 372 0 0
# advected 265 265 0 0
# dry deposited 198 198 0 0
# wet deposited 181 181 0 0
# photolyzed 160 160 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):
Compared to previous benchmark: 14.5.3
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:
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): Aerosol Optics

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 [1] 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 node (AWS)
Wall time: 06:27 08:09
Memory 12.8 GB 42.0 GB
Global mean OH:
(% change from previous version) 		13.20250697486 x 105 molec/cm3
(-0.489%) 		13.18941540588 x 105 molec/cm3
(-0.528%)
Methyl chloroform lifetime:
(% change from previous version) 		4.732650 years
(0.814%) 		4.713236 years
(0.870%)
Methane lifetime:
(% change from previous version) 		7.991936 years
(0.852%) 		7.955118 years
(0.906%)
Details
Species, J-Values, and COLUMN AODs having at least one grid cell that differs by 10% or more at the surface: GEOS-Chem Classic 14.5.3 vs 14.6.0 GCHP 14.5.3 vs 14.6.0
Species and J-Values for having at least one grid cell that differs by 10% or more at 500 hPa: GEOS-Chem Classic 14.5.3 vs 14.6.0 GCHP 14.5.3 vs 14.6.0
Species and J-Values having at least one grid cell that differs by 10% or more in the zonal means: GEOS-Chem Classic 14.4.3 vs 14.5.0 GCHP 14.4.3 vs 14.5.0
Emissions having at least one grid cell that changes by 10% or more: GEOS-Chem Classic 14.5.3 vs 14.6.0 GCHP 14.5.3 vs 14.6.0
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 CEDS TMB emissions

Mean OH decreases by -0.0008%. ALK6 anthro emissions decrease by 0.003%. NO ship emissions decrease by -0.016, causing similar decrases in NO2, O3 emissions by ParaNOx, as well as very small changes in other NO emission sectors. TMB global mass increases from essentially zero to 1.48 Tg, due to the emissions now being placed in the proper species. O3 concentratons at the surface are essentialy unchanged (vary betwen 0.999 and 1.001).

2a. Add CEDS 0.1 x 0.1 degree emissions #2171 and
2b. Fix merge conflict that emitted CEDS C6H14 emissions into ALK4 instead of ALK6; Also emit C6H14 into ALK6 in CMIP6 and HTAP3 inventories

Mean OH increased by 0.03%. Most anthropogenic & ship emissions show small % differences (of the order 0.01% or less), probably due to regridding from 0.1 degree resolution. ALK4 ship emissions are reduced by 28% and ALK6 ship emissions increased by 172% due to the proper partitioning of C6H14 hexanes into ALK6. HEMCO timing only increased by 0.3%, which suggests that the regridding from 0.1 degree is not a serious bottleneck. NO emissions increased by 0.33%, which causes similar percent differences in the PARANOx species (NO2, HNO3). Global mass changes are of order +/- 1% or less.

3a. Use USTAR read from GEOS instead of calculating from U10M and V10M #279 and
3b. Update dust scale factors for Dust DEAD using meteorlogy friction velocity

Mean OH decreases by 0.51%. Dust emissions increase over deserts (Sahara, Namib, Australian Outback, Gobi) by up to 2x, with a slight decrease in Morocco/Mauritania). Total DST1-DST4 masses increase by 127%, 181%, 202%, 267% respectively. J-values decrease over the affected areas by 5-20%, with the most pronounced change over the Sahara. O3 concentrations decrease by up to 2 ppb (or approx 2%) over the Sahara. OH concentrations decrease by up to 25% over the Sahara. CO changes are negligible, NOx decreases by up to 0.1% over affected areas. Primary organics concentrations show small increases following the decrease in OH.

4. Now define the dry deposition land cover type properly for O3 deposition to oceans

Mean OH decreases by 0.0008%. Most global masses change by +/-0.001% or less. At the surface, the only significant difference are in SALAAL & SALACL, which show differences over oceans of 1.5e-5 to 3e-5 ug/m3. BrSALA shows up to a 10% increase at 60S and 400-600 hPa. SALAAL and SALACL show up to 1% increases at 30S and ~100hPa. Most other aerososl show negligble differences in surface/500hPa/zonal means. NIT increases in a single grid box over Australia by about 33%. NITs shows a slight decrease over Greenland at 500hPa.

5. Fixed PDOWN definition and re-evaporation requirement for washout

Mean OH increases by 0.0009%. SALAAL at surfaces shows up to +/-15% differences for a few grid boxes over the Amazon, Australia, and N. American boreal forests. Zonal mean plots show very small differences (a couple percent).

6. Fixes towards achieving bit-for-bit reproducibility in GC-Classic upon restart

Mean OH decreases by 0.00033%. Global mass differences are typically less than +/- 0.005% Difference plots show patterns consistent with numerical noise.

7. Output sea flux species dry deposition velocity with DryDep collection

Identical to 14.6.0-alpha.9 except for the following diagnostics (which now contain the contribution to sea-air deposition velocity): DryDepVel_ACET, DryDepVel_ALD2, DryDepVel_ETNO3, DryDepVel_MENO3, DryDepVel_MOH

8. Aerosol table updates for mineral dust

Mean OH decreases by 0.0021%. J-value ratio plots show very small decreases (about -0.005 or less) over the Sahara (Morocco, Western Sahara, Algeria, Libya, Saudi Arabia). Some J-values show corresponding increases of similar magnitude off the Horn of Africa and over the Himalayas. Very small J-value increases are noted over the Australian Outback. Global mass of species change by +/- 0.05 Gg or less. Total AOD shows absolute diff decreases of up to 0.025, with the largest difference over Morocco/W. Sahara.

1-month GEOS-Chem Classic version comparison (14.5.3 vs 14.6.0)

Below are links to plots and tables comparing 1-month simulations for GEOS-Chem Classic 14.6.0 (Dev) and GEOS-Chem Classic 14.5.3 (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, ALK6, BENZ, CH4, C2H2, C2H4, C2H6, C3H8, C4H6, EBZ, PRPE, STYR, TMB, TOLU, XYLE

sfc 500hPa full column stratosphere column total
Secondary Organics

ACTA, MACR, ALD2, BALD, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, FURA, GLYC, GLYX, HCOOH, RCOOH, 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
Timing GCClassic 14.5.3 vs 14.6.0

1-month GCHP version comparison (14.5.3 vs 14.6.0)

Below are links to plots and tables comparing 1-month simulations for GCHP 14.6.0 (Dev) and GCHP 14.5.3 (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, ALK6, BENZ, CH4, C2H2, C2H4, C2H6, C3H8, C4H6, EBZ, PRPE, STYR, TMB, TOLU, XYLE

sfc 500hPa full column stratosphere column total
Secondary Organics

ACTA, MACR, ALD2, BALD, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, FURA, GLYC, GLYX, HCOOH, RCOOH, 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
Timing GCHP 14.5.3 vs 14.6.0

1-month GCHP vs GEOS-Chem Classic comparison

Below are links to plots and tables comparing 1-month simulations for GCHP 14.6.0 (Dev) and GEOS-Chem Classic 14.6.0 (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, ALK6, BENZ, CH4, C2H2, C2H4, C2H6, C3H8, C4H6, EBZ, PRPE, STYR, TMB, TOLU, XYLE

sfc 500hPa full column stratosphere column total
Secondary Organics

ACTA, MACR, ALD2, BALD, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, FURA, GLYC, GLYX, HCOOH, RCOOH, 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 vs GEOS-Chem-Classic diff-of-diffs

Below are links to plots and tables comparing 1-month simulations for GCHP 14.6.0 - 14.5.3 (Dev) and GEOS-Chem Classic GCHP 14.6.0 - 14.5.3 (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, ALK6, BENZ, CH4, C2H2, C2H4, C2H6, C3H8, C4H6, EBZ, PRPE, STYR, TMB, TOLU, XYLE

sfc 500hPa full column stratosphere
Secondary Organics

ACTA, MACR, ALD2, BALD, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, FURA, GLYC, GLYX, HCOOH, RCOOH, MAP, PHEN, RCHO, ETHP, 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
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