Benchmark/GEOS-Chem 12.8.0

This page includes information about all benchmark simulations for GEOS-Chem 12.8.0.

GEOS-Chem Classic 1-month benchmark

Benchmark plots

Enable PDF bookmarks¹ in the files linked below to navigate between species. See the Species in GEOS-Chem wiki page for species definitions and details.

Species Category²	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, BCPI, BCPO, OCPI, OCPO, AERI, BrSALA, BrSALC, ISALA, ISALC, NITs, SALA, SALC, SO4s, Simple_SOA, Complex_SOA	sfc	500hPa	full column	stratosphere	sfc	AOD
Bromine Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH3Br, CH2Br2, CHBr3, HOBr, HBr	sfc	500hPa	full column	stratosphere	sfc
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	sfc
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	sfc
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	sfc	500hPa	full column	stratosphere	sfc
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, MEK, MVK, ISOPN, GLYX, HCOOH, MAP, RCHO, MP	sfc	500hPa	full column	stratosphere	sfc
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	sfc
Sulfur SOx, DMS, OCS, SO2, SO4	sfc	500hPa	full column	stratosphere	sfc
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
Operation budgets	Tables by species

¹All plots created with GCPy have PDF bookmarks. If you do not see them in your browser try using a different browser (not Safari) or installing an Adobe Acrobat plug-in.

²Species category and lumped species definitions are simple to adjust. Updating them requires only editing the YAML files.

Benchmark assessment form

Description

New features added into GEOS-Chem

Feature	Submitted by
Features affecting the full-chemistry simulation:
Isoprene chemistry	Kelvin Bates (Harvard)
Wet deposition parameterization	Kelvin Bates (Harvard) Sarah Safieddine (MIT)
Ozone deposition to the ocean	Ryan Pound (York) Mat Evans (York)
Use online DustDead, MEGAN, SeaSalt, and SoilNOx emissions for benchmark simulations	Melissa Sulprizio (GCST)
Shift CMIP6 time from middle to start of month to allow start in January	Lizzie Lundgren (GCST)
Features NOT affecting the full-chemistry simulation:
GFED 4.1s beta emissions for 2017-2019	Maggie Marvin (U. Edinburgh)
Replace `State_Chm%nAero` with `State_Chm%nAeroSpc` and `State_Chm%nAeroType`	Seb Eastham (MIT) GCST
Convert all files in `GeosCore`, `GeosUtil`, and `Headers` to `.F90`	Melissa Sulprizio (GCST)
Change GEOS-Chem timers from a CPP switch to an option in input.geos	Melissa Sulprizio (GCST)
Remove potential for surface CH4 retrieval error in SET_CH4 due to reliance on HEMCO emissions year	Christoph Keller (GMAO)
Features affecting GCHP only:
Fix leap year handling bug in GCHP multi-run script	Lizzie Lundgren (Harvard)
Fix SH surface ozone bias	Sebastian Eastham (MIT) Lizzie Lundgren (Harvard)

Version, resolution, met fields used: GEOS-FP (72L), 4x5, July 2016

1-month benchmark finished on: Tue Mar 31 07:09:46 EDT 2020

Performance statistics:

Compiled with ifort 17.0.4
Ran on 24 CPUs of holyjacob01.rc.fas.harvard.edu (Intel(R) Xeon(R) CPU E5-2680 v3 "Haswell" @ 2.50 GHz)
Wall time: 09:28:36
CPU time / wall time: 21.4657
% of ideal performance: 89.44%
Memory: 13.2477 GB

Git tag 12.8.0-rc.0

Compared to previous benchmark: 12.7.0

This update will impact:
(select all that apply with boldface) Advection, BL Mixing, Convection, Met Fields, Dry Dep, Wet Dep, Stratosphere, Emissions, Photolysis, Chemistry, Other (please specify):

Unit test results may be viewed at: http://ftp.as.harvard.edu/gcgrid/geos-chem/1mo_benchmarks/GC_12/12.8.0/GCC/Plots/GC_12.8.0_Mar30.results.html

Metrics

Global mean OH from log file (% change): 11.8937088091687 x 10⁵ molec/cm³ (+0.96%)

Methyl chloroform lifetime (% change): 5.2253 years (-1.25%)

Methane lifetime (% change): 8.7797 years (-1.30%)

Overview

Comments on observed differences:

Below we summarize the notable changes caused by specific updates.

Isoprene chemistry

This update introduced several new advected species:

HMHP, ETP, HPETHNL, HCOOH, PYAC, ATOOH, ETHLN, MCRHN, MCRHNB, R4P, RP, RA3P, RB3P, PIP, PP, RIPA, RIPB, RIPC, RIPD, IEPOXA, IEPOXB, IEPOXD, ICHE, HC5A, HMML, HPALD1, HPALD2, HPALD3, HPALD4, IDC, IHN1, IHN2, IHN3, IHN4, INPB, INPD, IDN, ICN, ITCN, ITHN, ICPDH, IDCHP, IDHDP, IDHPE, MVKDH, MVKHC, MVKHCB, MVKHP, MVKPC, MCRDH, MCRENOL, MCRHP, MACR1OOH

and removed several species:

NPMN, ISOPND, ISOPNB, MOBA, MACRN, IMAE, SOAME, SOAMG, ISN1OG, ISN1OA, IPMN, HC187

The benchmark categories have been updated to account for these changes, following recommendations from Kelvin Bates.

For remarks on impacts caused by these changes, please see this discussion on Github.

NOTE: There are large decreases observed in AOD from isoprene SOA in this version. These changes are partially due to removing some species that were included in the isoprene SOA calculation in aerosol_mod.F, but are mainly due to the bug fix for the AOD from isoprene SOA diagnostic that went into GEOS-Chem 12.7.1.

Ozone deposition to the ocean

This update increases O3 concentrations over the ocean at the surface by up to 5 ppb, primarily at high latitudes. Global mean OH is increased by 0.15% with these changes.

Use online DustDead, MEGAN, SeaSalt, and SoilNOx emissions for benchmark simulations

The entries below from the emissions tables by species show differences caused by turning the DustDead, MEGAN, SeaSalt, and SoilNOx extensions back on in benchmark simulations. These changes are similar, but of the opposite sign, to the changes observed in the GEOS-Chem 12.4.0 benchmark when offline emissions were implemented.

###############################################################################
### Emissions totals                                                  ###
### Ref = GC_12.7.0; Dev = GC_12.8.0                                        ###
###############################################################################
                                       Ref                 Dev      Dev - Ref
DST1 Natural          :           9.550223            3.400091      -6.150131 Tg
DST2 Natural          :          23.987765            8.540177     -15.447588 Tg 
DST3 Natural          :          43.524575           15.495716     -28.028860 Tg
DST4 Natural          :          47.613968           16.951628     -30.662340 Tg
...
ACET Biogenic         :           2.734815            2.936038       0.201222 Tg C
ALD2 Biogenic         :           0.971226            0.993718       0.022492 Tg C
EOH Biogenic          :           0.928745            0.950253       0.021508 Tg C
ISOP Biogenic         :          33.565337           30.881374      -2.683962 Tg C
LIMO Biogenic         :           0.930596            0.903745      -0.026852 Tg
MTPA Biogenic         :           8.089232            8.345941       0.256708 Tg
MTPO Biogenic         :           3.756286            3.860389       0.104104 Tg
PRPE Biogenic         :           1.855930            1.997076       0.141146 Tg C
SOAP Biogenic         :           1.405632            1.206619      -0.199013 Tg
SOAS Biogenic         :           1.405632            1.206619      -0.199013 Tg
..
SALA Natural          :           5.620708            4.653316      -0.967392 Tg
SALC Natural          :         340.191067          281.640070     -58.550997 Tg
...
NO Soil               :           1.580800            1.376302      -0.204498 Tg

Details

List all SURFACE species, J-Values, and COLUMN AOD values that changed by 10% or more:

Aerosols: DST1 DST2 DST3 DST4 NH4 NIT SO4 Complex_SOA Simple_SOA AERI BrSALA BrSALC ISALA ISALC NITs SALC SO4s
Bromine: Bry BrOx Br Br2 BrCl BrNO2 BrNO3 BrO HOBr HBr
Chlorine: Cly ClOx Cl ClO Cl2 Cl2O2 ClOO ClNO2 ClNO3 HOCl HCl OClO
Iodine: Iy IxOy I I2 IBr ICl IO IONO IONO2 CH2I2 HI HOI OIO
Nitrogen: NOy NOx HNO2 HNO3 HNO4 NIT NO NO2 NO3 N2O5 MPN PAN PPN NHx NH3 NH4 MENO3 ETNO3 IPRNO3 NPRNO3
Oxidants: O3 OH NOx
Primary_Organics: EOH ISOP MTPA MTPO LIMO PRPE
ROy: H2O2 H HO2 O1D OH RO2
Secondary_Organic_Aerosols: TSOA0 TSOA1 TSOA2 TSOA3 ASOA1 ASOA2 ASOA3 ASOAN TSOG0 TSOG1 TSOG2 TSOG3 ASOG1 ASOG2 ASOG3 INDIOL LVOCOA SOAIE SOAP SOAS
Secondary_Organics: ACTA ALD2 CH2O HPALDs MACR IEPOX ACET MEK MVK ISOPN GLYX HCOOH MAP RCHO MP
Sulfur: SOx DMS SO2 SO4
J-Values: ACET ALD2 ATOOH BrCl BrNO2 BrNO3 BrO CCl4 CFC11 CFC113 CFC114 CFC115 CFC12 CH2Br2 CH2Cl2 CH2I2 CH2IBr CH2ICl CH2O CH3Br CH3CCl3 CH3Cl CH3I CHBr3 Cl2 Cl2O2 ClNO2 ClNO3 ClO ETHLN ETNO3 ETP GLYC GLYX H1211 H1301 H2402 H2O2 HAC HCFC123 HCFC141b HCFC142b HCFC22 HNO2 HNO3 HNO4 HOBr HOCl HOI HONIT I2O2 I2O3 I2O4 INO IONO IONO2 IPRNO3 MACR MAP MEK MENO3 MGLY MONITS MONITU MP MPN MVK MVKN N2O N2O5 NO NO2 NPRNO3 O2 O3O1D OCS OClO PAN PIP PP PROPNN PRPN R4N2 R4P RA3P RB3P RCHO RP
Column AOD: Dust BCPI OCPI SALA SALC SO4 SOA_from_Aqueous_ISOP

List all 500 hPa species and J-Values that changed by 10% or more :

Aerosols: DST2 DST3 DST4 NIT Complex_SOA BrSALA BrSALC NITs
Bromine: Bry BrOx Br Br2 BrCl BrNO2 BrNO3 BrO HOBr HBr
Chlorine: Cly ClOx Cl ClO Cl2 Cl2O2 ClOO ClNO2 ClNO3 HOCl HCl OClO
Iodine: I2 IBr ICl IO IONO IONO2 CH2I2 HI OIO
Nitrogen: NOx HNO2 HNO3 HNO4 NIT NO NO2 N2O5 MPN PPN NH3
Oxidants: OH NOx
Primary_Organics: EOH ISOP MTPA MTPO LIMO PRPE XYLE
ROy: H2O2 H HO2 OH RO2
Secondary_Organic_Aerosols: TSOA0 TSOA1 TSOA2 TSOA3 TSOG0 TSOG1 TSOG2 TSOG3 INDIOL SOAP
Secondary_Organics: ACTA ALD2 CH2O HPALDs MACR IEPOX ACET MVK ISOPN GLYX MAP RCHO
Sulfur: DMS SO2

List all ZONAL MEAN species and J-Values that changed by 10% or more:

Aerosols: NH4 NIT Complex_SOA AERI BrSALA BrSALC
Bromine: BrOx Br BrCl BrNO3 BrO HOBr HBr
Chlorine: ClOx Cl ClO Cl2 Cl2O2 ClOO ClNO3 HOCl HCl OClO
Iodine: I I2 IBr ICl IO IONO2 CH2I2 CH2ICl CH2IBr HI HOI OIO
Nitrogen: HNO3 NIT NO3 N2O5 MPN PAN PPN NH3 NH4 NPRNO3
Oxidants: O3 OH
Primary_Organics: ISOP MTPA MTPO LIMO C3H8 PRPE
ROy: H HO2 O1D OH RO2
Secondary_Organic_Aerosols: TSOA0 TSOA1 TSOA2 TSOG0 TSOG1 TSOG2 TSOG3 INDIOL LVOCOA
Secondary_Organics: ACTA ALD2 CH2O HPALDs MACR IEPOX MVK ISOPN GLYX HCOOH MAP RCHO
Sulfur: DMS SO2

List all EMISSIONS that changed by 10% or more:

Biogenic: ACET ALD2 EOH ISOP LIMO MTPA MTPO PRPE SESQ SOAP SOAS
Natural: DST1 DST2 DST3 DST4 SALA SALC
Ship: HNO3 NO2 NO O3
Soil: NO
Total: ACET ALD2 DST1 EOH ISOP MTPA NO PRPE SOAP

Approval

Requires further investigation:

In addition to this 1-month benchmark, we also ran the folllowing:

1-month full-chemistry benchmarks:
- GCHP 12.8.0
- GEOS-Chem Classic with Luo et al. (2019) wet deposition
1-year Transport Tracer benchmarks:

A 1-year full-chemistry benchmark will be also be completed for this version.

Approved by:

Date of approval:

GCHP 1-month benchmark

The following sections contain validation plots for GCHP 12.80.

Comparison of GCHP versions

This table contains plots comparing GCHP 12.7.0 (Ref) and GCHP 12.80 (Dev) for a 1-month simulation.

Species Category²	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, BCPI, BCPO, OCPI, OCPO, AERI, BrSALA, BrSALC, ISALA, ISALC, NITs, SALA, SALC, SO4s, Simple_SOA, Complex_SOA	sfc	500hPa	full column	stratosphere	sfc	AOD
Bromine Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH3Br, CH2Br2, CHBr3, HOBr, HBr	sfc	500hPa	full column	stratosphere	sfc
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	sfc
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	sfc
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	sfc	500hPa	full column	stratosphere	sfc
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, MEK, MVK, ISOPN, GLYX, HCOOH, MAP, RCHO, MP	sfc	500hPa	full column	stratosphere	sfc
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	sfc
Sulfur SOx, DMS, OCS, SO2, SO4	sfc	500hPa	full column	stratosphere	sfc
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

Comparison of GCHP and GEOS-Chem Classic

This table contains plots comparing GEOS-Chem Classic 12.8.0 (Ref) against GCHP 12.8.0 (Dev) for a 1-month simulation.

Species Category²	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, BCPI, BCPO, OCPI, OCPO, AERI, BrSALA, BrSALC, ISALA, ISALC, NITs, SALA, SALC, SO4s, Simple_SOA, Complex_SOA	sfc	500hPa	full column	stratosphere	sfc	AOD
Bromine Bry, BrOx, Br, Br2, BrCl, BrNO2, BrNO3, BrO, CH3Br, CH2Br2, CHBr3, HOBr, HBr	sfc	500hPa	full column	stratosphere	sfc
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	sfc
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	sfc
Primary Organics EOH, MOH, ISOP, MTPA, MTPO, LIMO, ALK4, BENZ, CH4, C2H6, C3H8, PRPE, TOLU, XYLE	sfc	500hPa	full column	stratosphere	sfc
Secondary Organics ACTA, ALD2, CH2O, HPALDs, MACR, IEPOX, ACET, MEK, MVK, ISOPN, GLYX, HCOOH, MAP, RCHO, MP	sfc	500hPa	full column	stratosphere	sfc
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	sfc
Sulfur SOx, DMS, OCS, SO2, SO4	sfc	500hPa	full column	stratosphere	sfc
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

GCHP and GEOS-Chem Classic difference of differences

This table contains plots comparing the difference [GCHP 12.8.0 - GCHP 12.7.0] against the difference [GC Classic 12.8.0 - GC Classic 12.7.0], taken from 1-month benchmark simulations.

Category	Plots
	Level Map		Zonal Mean
Oxidants	sfc	500hPa	full column	stratosphere
Aerosols	sfc	500hPa	full column	stratosphere
Bromine	sfc	500hPa	full column	stratosphere
Chlorine	sfc	500hPa	full column	stratosphere
Iodine	sfc	500hPa	full column	stratosphere
Nitrogen	sfc	500hPa	full column	stratosphere
Primary Organics	sfc	500hPa	full column	stratosphere
Secondary Organics	sfc	500hPa	full column	stratosphere
Secondary Organic Aerosols	sfc	500hPa	full column	stratosphere
Sulfur	sfc	500hPa	full column	stratosphere
ROy	sfc	500hPa	full column	stratosphere

NOTE: At present, we have only created the diff-of-diffs plots for species concentration. This can be extended to other categories in the future.

1-year Transport Tracers benchmarks

Three 1-year Transport Tracers benchmark simulation were performed using GEOS-Chem 12.8.0:

GEOS-Chem Classic with the standard wet deposition scheme
GEOS-Chem Classic with the Luo et al. (2019) wet deposition scheme
GCHP with the standard wet deposition scheme

The GEOS-Chem Classic (w/ standard wetdep) simulation was spun up for 10 years, and the resulting restart file was used to initialize all three 1-year transport tracer benchmarks listed above.

Both GEOS-Chem Classic simulations utilized 4° x 5° GEOS-FP met fields for the year 2016. These simulations can be used to validate the Luo wet dep scheme which is offered as an option starting in this version.

The GCHP simulation used 0.25° x 0.3125° global GEOS-FP met fields for 2016 and ran at c48 resolution.

Comparison of GEOS-Chem Classic wet deposition schemes

This table contains plots comparing GEOS-Chem Classic 12.8.0 with the standard wet deposition scheme (Ref) and GEOS-Chem Classic 12.8.0 with the Luo et al. (2019) wet deposition scheme (Dev) for a 1-year simulation.

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

Pb-Be Budgets	Troposphere Stratosphere Troposhpere + Stratosphere
Operation budgets	Tables by species
Strat-trop exchange	Monthly and annual mean values

Comparison of GCHP and GEOS-Chem Classic

This table contains plots comparing GEOS-Chem Classic 12.8.0 with the standard wet deposition scheme (Ref) and GEOS-Chem Classic 12.8.0 with the Luo et al. (2019) wet deposition scheme (Dev) for a 1-year simulation.

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

Pb-Be Budgets	Troposphere Stratosphere Troposhpere + Stratosphere
Operation budgets	Tables by species

Benchmark/GEOS-Chem 12.8.0

Contents

GEOS-Chem Classic 1-month benchmark

Benchmark plots

Benchmark assessment form

GCHP 1-month benchmark

Comparison of GCHP versions

Comparison of GCHP and GEOS-Chem Classic

GCHP and GEOS-Chem Classic difference of differences

1-year Transport Tracers benchmarks

Comparison of GEOS-Chem Classic wet deposition schemes

Comparison of GCHP and GEOS-Chem Classic

Navigation menu

Benchmark/GEOS-Chem 12.8.0

GEOS-Chem Classic 1-month benchmark

Benchmark plots

Benchmark assessment form

GCHP 1-month benchmark

Comparison of GCHP versions

Comparison of GCHP and GEOS-Chem Classic

GCHP and GEOS-Chem Classic difference of differences

1-year Transport Tracers benchmarks

Comparison of GEOS-Chem Classic wet deposition schemes

Comparison of GCHP and GEOS-Chem Classic

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