Benchmark/GEOS-Chem 12.8.0

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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

GEOS-Chem 12.8.0 (Dev)

Budget totals by vertical region

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:

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.
  1. Kelvin and Mat have confirmed that the changes are consistent with their scientific updates to isoprene chemistry and ozone deposition to ocean.
  2. I went through the benchmarks and don’t see any unexpected results.
  3. 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.
  4. 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 500 hPa Full column Stratosphere
PassiveTracers

PassiveTracer, SF6Tracer, CH3ITracer, COAnthroEmis25dayTracer, COAnthroEmis50dayTracer, COUniformEmis25dayTracer, GlobEmis90dayTracer, NHEmis90dayTracer, SHEmis90dayTrace

Surface 500 hPa Full column Stratosphere
WetLossConv

Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat

Surface 500 hPa Full column Stratosphere
WetLossLS

Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat

Surface 500 hPa Full column Stratosphere
 
Pb-Be Budgets GEOS-Chem 12.8.0 (Ref): GEOS-Chem 12.8.0 w/ Luo wetdep (Dev):
Operation budgets GEOS-Chem 12.8.0 (Ref) vs GEOS-Chem 12.8.0 w/ Luo wetdep (Dev):
Strat-trop exchange GEOS-Chem 12.8.0 (Ref): GEOS-Chem 12.8.0 w/ Luo wetdep (Dev):

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 500 hPa Full column Stratosphere
PassiveTracers

PassiveTracer, SF6Tracer, CH3ITracer, COAnthroEmis25dayTracer, COAnthroEmis50dayTracer, COUniformEmis25dayTracer, GlobEmis90dayTracer, NHEmis90dayTracer, SHEmis90dayTracer

Surface 500 hPa Full column Stratosphere
WetLossConv

Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat

Surface 500 hPa Full column Stratosphere
WetLossLS

Pb210, Pb210Strat, Be7, Be7Strat, Be10, Be10Strat

Surface 500 hPa Full column Stratosphere
 
Pb-Be Budgets GCHP 12.8.0 (Dev) only:
Operation budgets by species GEOS-Chem Classic 12.8.0 (Ref) vs GCHP 12.8.0 (Dev):

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:

Updates introduced in 12.7.0:

10.6131 607.6070
Red 12.6.0 GEOS-FP,
72L, 4x5
2016 Updates introduced in 12.6.0:

Updates introduced in 12.5.0:

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 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
Mean OH

Monthly and annual mean

Model vs Observations

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.