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

This version is currently in development

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
Fix sea salt alkalinity and heterogeneous acid-catalyzed halogen chemistry Becky Alexander (UW) Chemistry
Bug fix
Add S(IV)+HOBr and S(IV)+HOCl reactions into fullchem mechanism (they had been inadvertently omitted) Becky Alexander (UW) 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
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 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: 07:13 07:49
Memory 12.1 GB 40.0 GB
Global mean OH:
(% change from previous version) 		13.10319997289 x 105 molec/cm3
(+5.36%) 		13.11612003755 x 105 molec/cm3
(+5.54%)
Methyl chloroform lifetime:
(% change from previous version) 		4.744647 years
(-4.49%) 		4.720860 years
(-4.71%)
Methane lifetime:
(% change from previous version) 		8.004795 years
(-4.38%) 		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


2. Update VOC fire emissions and adding lumped furan

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


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


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


6. Prevent divide-by-zero error in sulfur chemistry


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


8. Fix bug in HOBr uptake rate calculation


9. Restore vertical allocation of CEDS energy and industry emissions


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 benchmarks

TBD

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