GEOS-Chem 14.2.0

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GEOS-Chem Versions Page

This page includes information about GEOS-Chem 14.2.0. The GEOS-Chem model development priorities page lists additional developments that may be added.

Version overview

The following items have been added to GEOS-Chem 14.2.0. Also see the following Github pages:

Feature Contributor(s) Model scope Notes and references
Updates that will affect full-chemistry benchmark simulations
Nitrate photolysis Viral Shah (NASA GMAO) Chemistry
Update VOC fire emissions and adding lumped furan Colette Heald (MIT)
Tess Carter (MIT) 		Chemistry
Reinstate Iy sink reactions on alkaline sea salt aerosol and remove IONO2 recycling on alkaline sea salt aerosol Becky Alexander (UW) Chemistry
Add S(IV)+HOBr and S(IV)+HOCl reactions into fullchem mechanism (they had been inadvertently omitted) Becky Alexander (UW) Chemistry
Bug fix
Fix sea salt alkalinity and heterogeneous acid-catalyzed halogen chemistry Becky Alexander (UW)
Viral Shah (GMAO) 		Chemistry
Bug fix
Prevent divide-by-zero error in sulfur chemistry Lizzie Lundgren (Harvard) Chemistry
Bug fix
Bug fix: Initialize CO2 to a relevant value for full-chemistry Mike Long (GMAO)
Bob Yantosca (Harvard) 		Chemistry
Bug fix
Fix bug in HOBr uptake rate calculation Viral Shah (GMAO) Chemistry
Bug fix
Change relative tolerance back to 0.5e-2 to address model slowdown from other 14.2.0 chemistry updates Melissa Sulprizio (Harvard) Chemistry
Bug fix
Turn SSA debromination on by default Melissa Sulprizio (Harvard) Chemistry
Emissions
Restore vertical allocation of CEDS energy and industry emissions Melissa Sulprizio (Harvard) Emissions
Bug fix
Updates that will NOT affect full-chemistry benchmark simulations
Update transport tracer simulation for consistency with the tracer gridded component in GEOS Melissa Sulprizio (Harvard) TransportTracer simulation
Update entrainment-limited kinetics in clouds Chris Holmes (FSU) Chemistry
  • geos-chem PR #1292
  • NOTE: Will not affect benchmarks because this function is not currently used
Now use consistent behavior when the first call to the KPP integrator fails Bob Yantosca (Harvard) Chemistry
  • geos-chem PR #1609
  • NOTE: Will not affect simulations where no KPP integration errors occur.
Extend GFED4 biomass burning data through Oct 2022 Makoto Kelp (Harvard)
Bob Yantosca (Harvard) 		Emissions
  • geos-chem PR #1709
  • NOTE: Will not affect benchmarks, because the benchmark year is 2019, and we are only adding new years 2020-2022.
Add climatology option for GFED4 biomass burning emissions Melissa Sulprizio (Harvard) Emissions
Add climatology option for lightning NOx Lee Murray (Rochester)
Melissa Sulprizio (Harvard) 		Emissions
Fixes for reading masks in HEMCO Bob Yantosca (Harvard)
Haipeng Lin (Harvard) 		HEMCO
Bug fix
Remove computational bottlenecks in hco_calc_mod.F90 Bob Yantosca (Harvard) HEMCO
Bug fix
Add compatibility for NAG compiler in HEMCO Francis Vitt (NCAR)
Haipeng Lin (Harvard) 		HEMCO
Updates and fixes for the CH4 simulation
  • Fix selection of troposphere-stratosphere boundary in global_ch4_mod.F90
  • Remove operator splitting in OH/Cl methane destruction
  • Updated loss frequencies for CH4 simulation
 Todd Mooring (Harvard) CH4 & carbon simulations
Update global anthropogenic CH4 emissions to EDGARv7.0 Melissa Sulprizio (Harvard) CH4 & carbon simulations
Emissions
Methane emissions from hydropower reservoirs Kyle Delwiche (UC Berkeley)
Melissa Sulprizio (Harvard) 		CH4 & carbon simulations
Emissions
Add RxnConst diagnostic for archiving reaction rate constants Haipeng Lin (Harvard) Diagnostics
Store HEMCO restart files in the run directory Restarts/ subdirectory Bob Yantosca (Harvard) Structural
Reduce log file output in GEOS-Chem and HEMCO Bob Yantosca (Harvard) Structural
Remove NcdfUtil/perl directory from GEOS-Chem and HEMCO Bob Yantosca (Harvard) Structural
Restructure photolysis to abstract original Fast-JX Lizzie Lundgren (Harvard) Structural
Remove array temporaries from seasalt_mod.F90 and carbon_mod.F90 Bob Yantosca (Harvard) Structural
Bug fix
Do not halt benchmark simulations and integration/parallel tests if there are missing species in restart files and/or boundary conditions Bob Yantosca (Harvard) Testing
Fix typo in Intel debug option in CMakeLists.txt Lee Murray (Rochester) GCC Build
Bug fix
Fix bug in global 0.25x0.3125 HEMCO standalone simulations Melissa Sulprizio (Harvard) HEMCO standalone
Add run configuration files for WRF-GC Haipeng Lin (Harvard) WRF-GC
Allow the use of OFFLINE_SEASALT for seasalt alkalinity, Cl, and Br in GEOS-Chem within CESM Haipeng Lin (Harvard) CESM-GC

geos-chem PR #1804

Use MODEL_CESM instead of HEMCO_CESM CPP switch in HEMCO Haipeng Lin (Harvard) HEMCO
CESM-GC
Updates that will only affect GCHP
Use dry pressure in GCHP advection Lizzie Lundgren (Harvard) Advection
Fix bug in tagged ozone simulation that caused simulation to crash Lizzie Lundgren (Harvard) Bug fix
Write all checkpoint files directly to Restarts directory and rename mid-run checkpoints Lizzie Lundgren (Harvard) Run directory
Add configurable option to allow overwriting diagnostics (enabled by default) Lizzie Lundgren (Harvard) Run directory
Make run-time configurable option for requiring presence of all species in restart file Lizzie Lundgren (Harvard) Run directory
Fix bug preventing running with over 3000 cores Lizzie Lundgren (Harvard) Bug fix
Make FindESMF.cmake use consistent libs Sebastian Eastham (MIT) Build system
Update GCHP check for python and bc libs to prevent error checking fail Lizzie Lundgren (Harvard) Run directory
Fix GCHP time_mod start and elapsed times Lizzie Lundgren (Harvard) Bug fix
Fix error in pressure level edge construction Sebastian Eastham (MIT) Advection

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
GFED4 biomass burning Several
  • Dry matter data and scale factors for additional years 2020 - Oct 2022
  • Climatology emissions for 2010-2019 and monthly mean emissions for 2007-2021 (current GFED4 record) generated by a 0.5x0.625 HEMCO standalone simulation
 ExtData/HEMCO/GFED4/v2023-03
EDGARv7.0, GC_CH4_LOSS, ResME CH4 ExtData/HEMCO/CH4/v2023-04

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: 14.1.1
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: 06:30 07:49
Memory 11.0 GB 40.0 GB
Global mean OH:
(% change from previous version) 		13.43850761193 x 105 molec/cm3
(+8.05%) 		13.11612003755 x 105 molec/cm3
(+5.54%)
Methyl chloroform lifetime:
(% change from previous version) 		4.569879 years
(-8.00%) 		4.720860 years
(-4.71%)
Methane lifetime:
(% change from previous version) 		7.700680 years
(-8.01%) 		7.961379 years
(-4.60%)
Details
Species, J-Values, and COLUMN AOD values that changed by 10% or more at the surface: GEOS-Chem Classic 14.2.0 vs 14.1.1 GCHP 14.2.0 vs 14.1.1
Species and J-Values that changed by 10% or more at 500 hPa: GEOS-Chem Classic 14.2.0 vs 14.1.1 GCHP 14.2.0 vs 14.1.1
Species and J-Values that changed by 10% or more in zonal mean: GEOS-Chem Classic 14.2.0 vs 14.1.1 GCHP 14.2.0 vs 14.1.1
Emissions that changed by 10% or more: GEOS-Chem Classic 14.2.0 vs 14.1.1 GCHP 14.2.0 vs 14.1.1
Overview
Below we summarize the notable changes caused by specific updates. See also the internal benchmark results which isolate impacts from specific updates.

1. Nitrate photolysis

This update causes large changes. NOx increases in the N. Hemisphere, with the largest changes over the tropics. Surface O3 increases by up to 3ppb. Global mean OH changes by 8.39%. This is consistent with the results of Shah et al. where they reported, "Including pNO photolysis in the model significantly increases modeled NOx concentrations below 6 km... The largest increase is in the tropics (30∘ S–30∘ N)... The effect of pNO photolysis is generally smaller above 6 km because of lower pNO concentrations... The ozone concentrations in the upper troposphere in the model are, on average, 20 ppbv higher than the ATom observations."


2. Turn SSA debromination on by default

This updates adds back the BrSALA and BrSALC emission sources. It also impacts other emissions over oceans (iodine, PARANOX). Bromine species increase considerably over oceans and ozone decreases by up to 10 ppb over the Souther Ocean. Global mean OH changes by -1.23%.


3. Reinstate Iy sink reactions on alkaline sea salt aerosol and remove IONO2 recycling on alkaline sea salt aerosol

Concentrations of ISALA/ISALC increase and IONO/IONO2 decrease over oceans as expected from restoring the Iy sink reactions. Ozone increases very slightly (max 0.005 ppb). Global mean OH changes by 0.017%.


4. Fix sea salt alkalinity and heterogeneous acid-catalyzed halogen chemistry

Becky wrote, "This fix causes BrO to decrease everywhere as expected. O3 is more complicated, showing increases in the SH and decreases in the NH." We see consistent changes here. OH increases over S. Hemisphere oceans and decreases over N. Hemisphere oceans. Overall, global mean OH changes by -1.66%.


5. Add S(IV)+HOBr and S(IV)+HOCl reactions into fullchem mechanism (they had been inadvertently omitted)

Becky writes, "This does not change the enhanced sulfate production rate (SR) because SR is the same but is now split up between O3, HOBr, and HOCl instead of all being attributed to O3... he changes to SO2, SO4, HOBr, HBr, HOCl, HCl, O3, and BrO for January 2019 are small to negligible." We see consistent changes here. Global mean OH changes by -0.0016%.


6. Bug fix: Initialize CO2 to a relevant value for full-chemistry

The CO2 fix causes very small changes in other species. CO2 changes are large in the global mass table because it is no longer being forced to zero. The global mean OH change is 0.00048%.


7. Fix bug in HOBr uptake rate calculation

Viral wrote, "Fixing this will increase the loss of HOBr (to HBr) and could lower BrOx levels, with a larger effect for simulations that include sea salt aerosol debromination." The 1-month benchmark confirms these changes, with decreases in BrOx and increases in O3. The overall impact on global mean OH is small at -0.006%.


8. Update VOC fire emissions and adding lumped furan

Large changes are observed in biomass burning emissions due to changing GFED4 emission factors. Two new species (BUTDI and FURA) are added. The change in global mean OH is -0.18%.


9. Restore vertical allocation of CEDS energy and industry emissions

Differences caused by this update are small, and can be seen as reduction of anthropogenic emissions and species concentrations at the surface primarily over land as well as increases aloft. Total column emissions show changes on the level of numerical noise. Global mean OH changes by 0.17%


1-month GEOS-Chem Classic version comparison (14.2.0 vs 14.1.1)

Below are links to plots and tables comparing 1-month simulations for GEOS-Chem Classic 14.2.0 (Dev) and GEOS-Chem Classic 14.1.1 (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 (14.2.0 vs 14.1.1)

Below are links to plots and tables comparing 1-month simulations for GCHP 14.2.0 (Dev) and GCHP 14.1.1 (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 14.2.0 (Dev) and GEOS-Chem Classic 14.2.0 (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 14.2.0 - 14.1.1 (Dev) and GEOS-Chem Classic GCHP 14.2.0 - 14.1.1 (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):
Compared to previous benchmark: 14.0.0
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 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 (14.2.0 vs 14.0.0)

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

Category1 Plots Additional Information
Level Map Zonal Mean Emissions
Oxidants

O3, CO, OH, NOx

Surface 500 hPa Full column Stratosphere Full column
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 500 hPa Full column Stratosphere Full column AOD

Aerosol profiles
Aerosol burdens
Global mean AOD

Bromine

Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH4Br, CH2Br2, CH2Br2, CH3Br3, HOBr, HBr

Surface 500 hPa Full column Stratosphere Full column
Chlorine

Cly, ClOx, Cl, ClO, Cl2, Cl2O2, ClOO, ClNO2, ClNO3, CCl4, CFCs, CH3Cl, CH2Cl2, CH4CCl3, HOCl, HCl, Halons, HCFCs, OClO

Surface 500 hPa Full column Stratosphere -
Iodine

Iy, IxOy, I, I2, IBr, ICl, IO, INO2, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO

Surface 500 hPa Full column Stratosphere Full column
Nitrogen

NOy, NOx, HNO2, HNO3, HNO4, MPAN, NIT, NO, NO2, NO3, N2O5, MPN, PAN, PPN, N2O, NHx, NH3, NH4, MENO3, ETNO3, IPRNO3, NPRNO3

Surface 500 hPa Full column Stratosphere Full column
Primary Organics

EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE

Surface 500 hPa Full column Stratosphere Full column
Secondary Organics

ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, MEK, MVK, ISOPN, GLYX, HCOOH, MAP, RCHO, MP

Surface 500 hPa Full column Stratosphere Full column
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 500 hPa Full column Stratosphere Full column
Sulfur

SOx, DMS, OCS, SO2, SO4

Surface 500 hPa Full column Stratosphere Full column
ROy

H2O2, H, H2, H2O, HO2, O1D, OH, RO2

Surface 500 hPa Full column Stratosphere -
J-values Surface 500 hPa Full column Stratosphere -
 
Emissions by HEMCO category
Emission totals
Global mass
Metrics
Model vs Observations

1-year fullchem GCHP vs GEOS-Chem Classic comparison

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

Category1 Plots Additional Information
Level Map Zonal Mean Emissions
Oxidants

O3, CO, OH, NOx

Surface 500 hPa 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

Surface 500 hPa Full column Stratosphere Column total AOD

Aerosol burdens
Global mean AOD

Bromine

Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH4Br, CH2Br2, CH2Br2, CH3Br3, HOBr, HBr

Surface 500 hPa Full column Stratosphere Column total
Chlorine

Cly, ClOx, Cl, ClO, Cl2, Cl2O2, ClOO, ClNO2, ClNO3, CCl4, CFCs, CH3Cl, CH2Cl2, CH4CCl3, HOCl, HCl, Halons, HCFCs, OClO

Surface 500 hPa Full column Stratosphere -
Iodine

Iy, IxOy, I, I2, IBr, ICl, IO, INO2, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO

Surface 500 hPa 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

Surface 500 hPa Full column Stratosphere Column total
Primary Organics

EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE

Surface 500 hPa Full column Stratosphere Column total
Secondary Organics

ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, GLYC, GLYX, HCOOH, MAP, RCHO, MP

Surface 500 hPa 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

Surface 500 hPa Full column Stratosphere Column total
Sulfur

SOx, DMS, OCS, SO2, SO4

Surface 500 hPa Full column Stratosphere Column total
ROy

H2O2, H, H2, H2O, HO2, O1D, OH, RO2

Surface 500 hPa Full column Stratosphere -
J-values Surface 500 hPa Full column Stratosphere -
 
Emissions by HEMCO category
Emission totals
Global mass
Metrics

OH concentration, MCF lifetime, CH4 lifetime

Model vs Observations

1-year fullchem GCHP version comparison (14.2.0 vs 14.0.0)

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).

Category1 Plots Additional Information
Level Map Zonal Mean Emissions
Oxidants

O3, CO, OH, NOx

Surface 500 hPa 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

Surface 500 hPa Full column Stratosphere Column total AOD

Aerosol burdens
Global mean AOD

Bromine

Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH4Br, CH2Br2, CH2Br2, CH3Br3, HOBr, HBr

Surface 500 hPa Full column Stratosphere Column total
Chlorine

Cly, ClOx, Cl, ClO, Cl2, Cl2O2, ClOO, ClNO2, ClNO3, CCl4, CFCs, CH3Cl, CH2Cl2, CH4CCl3, HOCl, HCl, Halons, HCFCs, OClO

Surface 500 hPa Full column Stratosphere -
Iodine

Iy, IxOy, I, I2, IBr, ICl, IO, INO2, IONO2, CH3I, CH2I2, CH2ICl, CH2IBr, HI, HOI, OIO

Surface 500 hPa 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

Surface 500 hPa Full column Stratosphere Column total
Primary Organics

EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE

Surface 500 hPa Full column Stratosphere Column total
Secondary Organics

ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, HAC, MEK, MVK, ISOPN, GLYC, GLYX, HCOOH, MAP, RCHO, MP

Surface 500 hPa 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

Surface 500 hPa Full column Stratosphere Column total
Sulfur

SOx, DMS, OCS, SO2, SO4

Surface 500 hPa Full column Stratosphere Column total
ROy

H2O2, H, H2, H2O, HO2, O1D, OH, RO2

Surface 500 hPa Full column Stratosphere -
J-values Surface 500 hPa Full column Stratosphere -
 
Emissions by HEMCO category
Emission totals
Global mass
Metrics

OH concentration, MCF lifetime, CH4 lifetime

Model vs Observations

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): 14.2.0-rc.1
Compared to previous benchmark: 14.0.0
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:
  • GEOS-Chem Classic: January 1, 2019 from GEOS-Chem 14.0.0 1-year transport tracer benchmark
  • GCHP: January 1, 2019 c24 regridded from GEOS-Chem Classic 4° x 5° spin-up run
Benchmark date: Spinup run: Jan 2009 - Dec 2018 (GEOS-Chem Classic only)
Production run: Jan 2019 - Dec 2019

1-year transport GEOS-Chem Classic version comparison (14.2.0 vs 14.0.0)

This table contains plots comparing 1-year transport tracer simulations for GEOS-Chem Classic 14.2.0 (Dev) and GEOS-Chem Classic 14.0.0 (Ref).

Category1 Plots
Level Map Zonal Mean
RnPbBeTracers

Rn222, Pb210, Pb210s, Be7, Be7s, Be10, Be10s

Surface 500 hPa Full column Stratosphere
TransportTracers:

PassiveTracer, SF6, CH3I, aoa, aoa_bl, aoa_nh, CO_25, CO_50, e90, e90_n, e90_s, st80_25, stOX

Surface 500 hPa Full column Stratosphere
WetLossConv

Pb210, Pb210s, Be7, Be7s, Be10, Be10s

Surface 500 hPa Full column Stratosphere
WetLossLS

Pb210, Pb210s, Be7, Be7s, Be10, Be10s

Surface 500 hPa Full column Stratosphere
 
Pb-Be Budgets GEOS-Chem 14.0.0 (Ref): GEOS-Chem 14.2.0 (Dev):
Strat-trop exchange GEOS-Chem 14.0.0 (Ref): GEOS-Chem 14.2.0 (Dev):
Mass conservation GEOS-Chem 14.0.0 (Ref): GEOS-Chem 14.2.0 (Ref):

1-year transport GCHP vs GEOS-Chem Classic comparison

This table contains plots comparing 1-year transport tracer simulations for GCHP 14.2.0 (Dev) and GCClassic 14.2.0 (Ref).

Category1 Plots
Level Map Zonal Mean
RnPbBeTracers

Rn222, Pb210, Pb210s, Be7, Be7s, Be10, Be10s

Surface 500 hPa Full column Stratosphere
TransportTracers:

PassiveTracer, SF6, CH3I, aoa, aoa_bl, aoa_nh, CO_25, CO_50, e90, e90_n, e90_s, st80_25, stOX

Surface 500 hPa Full column Stratosphere
WetLossConv

Pb210, Pb210s, Be7, Be7s, Be10, Be10s

Surface 500 hPa Full column Stratosphere
WetLossLS

Pb210, Pb210s, Be7, Be7s, Be10, Be10s

Surface 500 hPa Full column Stratosphere
 
Pb-Be Budgets GCClassic 14.2.0 (Ref): GCHP 14.2.0 (Dev):


Mass conservation GCClassic 14.2.0 (Ref): GCHP 14.2.0 (Dev):
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