Benchmark/GEOS-Chem 12.4.0

This page includes information about all benchmark simulations for GEOS-Chem 12.4.0.

1-month benchmark

Benchmark plots

Category1	Plots					Additional Information
	Level Map		Zonal Mean		Emissions
Primary	sfc	500hPa	full column	stratosphere	sfc
Aerosols	sfc	500hPa	full column	stratosphere	sfc	AOD
Bromine	sfc	500hPa	full column	stratosphere	sfc
Chlorine	sfc	500hPa	full column	stratosphere	--
Iodine	sfc	500hPa	full column	stratosphere	sfc
Nitrogen	sfc	500hPa	full column	stratosphere	sfc
Primary Organics	sfc	500hPa	full column	stratosphere	sfc
Secondary Organics	sfc	500hPa	full column	stratosphere	sfc
ROy	sfc	500hPa	full column	stratosphere	--
Sulfur	sfc	500hPa	full column	stratosphere	sfc
Emissions by HEMCO category	Total, Aircraft, Anthro, Bioburn, Biofuel, Biogenic, Lightning, Monoterp, Natural, Ocean, Seabirds, SenescingPlants, Ship, Soil, VolcDegas, VolcErupt,					Emissions tables
Plots still created by GAMAP
J-values	maps	differences	ratios	--	--
Budget	--	--	--	--	--	Ox and CO budgets

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

NOTES:

1. Category and lumped species definitions are simple to adjust. Updating them requires only editing the json files.
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.

Benchmark assessment form

Description
New features added into GEOS-Chem	Feature Submitted by Features affecting the full-chemistry simulation: Grid-independent dust emissions (hourly) David Ridley (CARB, formerly MIT) Jun Meng (Dalhousie) Grid-independent lightning NOx emissions (3-hourly) Lee Murray (Rochester) Grid-independent biogenic emissions (hourly) Jintai Lin (PKU) Hongjian Meng (PKU) Grid-independent sea salt emissions (hourly) Jintai Lin (PKU) Hongjian Meng (PKU) Grid-independent soil NOx emissions (hourly) Jintai Lin (PKU) Hongjian Meng (PKU) Updated volcano emissions (1978-2019) Christoph Keller (NASA/GMAO) Features affecting the full-chemistry simulation: Add photolysis menu to input.geos for specifying FAST-JX directory Tomas Sherwen (York)
Version, resolution, met fields used:	GEOS-FP (72L), 4x5, July 2016
1-month benchmark finished on:	Wed May 1 18:17:48 EDT 2019
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: TBD CPU time / wall time: TBD % of ideal performance: TBD% Memory: TBD GB
Compared to previous benchmark:	12.3.0
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): Lightning NOx Emissions, Dust Emissions, Biogenic Emissions, Sea Salt Emissions, Soil NOx Emissions, Volcano Emissions
Unit test results may be viewed at:	http://ftp.as.harvard.edu/gcgrid/geos-chem/1mo_benchmarks/GC_12/12.4.0/output/GC_12.4.0_May01.results.html
Metrics
Global mean OH from log file (% change):	12.6813392286848 x 105 molec/cm3 (1.20%)
Methyl chloroform lifetime (% change):	4.7862 years (-3.27%)
Methane lifetime (% change):	8.0490 years (-3.47%)
At the SURFACE, list all species that changed by 10% or more:
Comments on SURFACE differences:	Below we summarize the notable changes caused by specific updates.
At 500 hPa, list all species that changed by 10% or more:
Comments on 500 hPa differences:	See comments for surface differences
In the ZONAL MEAN differences, list all species that changed by 10% or more:
Comments on ZONAL MEAN differences:	See comments for surface differences
In the EMISSION RATIO maps, list all species that changed by 10% or more:
Comments on EMISSION RATIO differences:
Additional or summary comments:
Approval
Requires further investigation:
Approved by:
Date of approval: