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
Budget tables	GEOS-Chem 12.7.0 (Ref) Budget totals by vertical region PBL Troposphere Full atmosphere			GEOS-Chem 12.8.0 (Dev) Budget totals by vertical region PBL Troposphere Full atmosphere Comparison of stratosphere and troposphere budgets

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: GEOS-Chem classic with standard wet deposition GEOS-Chem classic with Luo et al. (2019) wet deposition GCHP with standard wet deposition A 1-year full-chemistry benchmark will be also be completed for this version.
Approved by:	Daniel Jacob wrote: Thank you for this 1-month benchmark of 12.8.0 and your inspections and comments. Kelvin and Mat have confirmed that the changes are consistent with their scientific updates to isoprene chemistry and ozone deposition to ocean. I went through the benchmarks and don’t see any unexpected results. Hongyu and Mat have pointed out what appear to be diagnostic problems in the GCHP transport tracer output, the new operation budget output, and IO. These should be fixed by the GCST. Jenny brought up a good point about defining chemical families in the benchmark and keeping track of new/old species names. We will do this. In the meantime, the 1-month benchmark is approved and we can move on to the 1-year benchmark.
Date of approval:	03 Apr 2020

GCHP 1-month benchmark

The following sections contain validation plots for GCHP 12.8.0.

Comparison of GCHP versions

This table contains plots comparing GCHP 12.7.0 (Ref) and 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

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.

For comparison of the Pb-210 and Be-7 budgets to previous versions, please see the following posts on the Rn-Pb-Be simulation wiki page:

1. Budget of Pb210 from 1-year benchmark simulations
2. Budget of Be7 from 1-year benchmark simulations

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	GEOS-Chem 12.8.0 (Ref): Troposphere Stratosphere Troposhpere + Stratosphere		GEOS-Chem 12.8.0 w/ Luo wetdep (Dev): Troposphere Stratosphere Troposhpere + Stratosphere
Operation budgets	GEOS-Chem 12.8.0 (Ref) vs GEOS-Chem 12.8.0 w/ Luo wetdep (Dev): Full column Troposphere Stratosphere PBL
Strat-trop exchange	GEOS-Chem 12.8.0 (Ref): Monthly and annual mean values		GEOS-Chem 12.8.0 w/ Luo wetdep (Dev): Monthly and annual mean values

Comparison of GCHP and GEOS-Chem Classic

This table contains plots comparing GEOS-Chem Classic 12.8.0 (Ref) and GCHP 12.8.0 (Dev) for a 1-year simulation. The spinned up GEOS-Chem Classic 12.8.0 transport tracers 1-yr benchmark restart file was regridded for use in GCHP.

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, SHEmis90dayTracer	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	GCHP 12.8.0 (Dev) only: Troposphere Stratosphere Troposphere + Stratosphere
Operation budgets by species	GEOS-Chem Classic 12.8.0 (Ref) vs GCHP 12.8.0 (Dev): Full column Troposphere Stratosphere PBL

NOTES:

• GlobEmis90dayTracer, NHEmis90dayTracer, SHEmis90dayTracer not included in GCHP and will appear as NaN values in concentration plots.
• Emissions/mixing budget diagnostics for passive tracers were not enabled in this version of GCHP.
• Pb-Be budget tables do not include accumulation in this benchmark.
• GCHP accumulation in operations budgets does not include transport while GEOS-Chem Classic accumulation does. The values should therefore not be directly compared.

GEOS-Chem Classic 1-year benchmark

1-year benchmark overview

In this 1-year benchmark, two GEOS-Chem model versions are compared to each other:

Color	Model Version	Met Type	Year	Updates affecting the benchmark simulation	Annual Mean OH [105 molec/cm3]	O3 STE [Tg a-1]
Black	Observations
Green	12.8.0	GEOS-FP, 72L, 4x5	2016	Updates introduced in 12.8.0: Isoprene chemistry Wet deposition parameterization Ozone deposition to the ocean Use online DustDead, MEGAN, SeaSalt, and SoilNOx emissions for benchmark simulations Updates introduced in 12.7.0: Small alkyl nitrate chemistry Methanol as part of standard chemical mechanism Update to Yuan processed MODIS LAI product (covering years 2005-2016) Latitudinally and monthly resolved fixed surface concentrations for long-lived organohalogen species (1750-2014) and methane Fix incorrect uptake coefficient for N2O5 in heterogeneous chemistry	10.6131	607.6070
Red	12.6.0	GEOS-FP, 72L, 4x5	2016	Updates introduced in 12.6.0: Combined heterogeneous chemistry updates HNO3 cold-temperature deposition Quick fix for aerosol pH calculation when dry Remove isoprene in VBS (leaving aqueous) Updated aerosol hygroscopicity and optics Add EDGAR BCPI and BCPO emissions for remaining sectors to DICE-Africa Updates introduced in 12.5.0: Retire obsolete emission inventories Updated offline biogenic emissions generated with GEOS-Chem 12.3.0 Updated volcano emissions to include eruptive emissions through April 2018 Scale DICE-Africa emissions to address errors in inventory Bug fix for C3H8 anthropogenic emissions Separate anthropogenic PM2.5 dust source from the DustDead extension Corrections for CFCs in the chemistry mechanism Fix typo in CLD_PARAMS routine in gckpp_HetRates.F90 Bug fix: make sure stratospheric BrY concentrations are read properly each month	10.505	605.968

1-year benchmark plots

These benchmarks plots were made using a combination of routines from GCPy and GAMAP. The 6-panel concentration, difference, and fractional difference plots and tables were created with GCPy, while the model vs observation plots were created with GAMAP because they have not been converted to Python yet.

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
Mean OH	Monthly and annual mean
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

¹Benchmark category definitions: benchmark_categories.yml
²Lumped species definitions: lumped_species.yml

NOTES:

1. Category and lumped species definitions are simple to adjust.
2. All 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.