GEOS-Chem model development priorities

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On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the Working Groups and the Steering Committee.

We also invite you to view our GEOS-Chem Support Team project management board on Trello.com, which shows the current GCST workflow.

Priorities assigned to upcoming GEOS-Chem versions

12.5.0

This version is currently in development. See the GEOS-Chem 12 wiki page for details.

12.6.0

This version is currently in development. See the GEOS-Chem 12 wiki page for details.

12.7.0

This version will require 1-month and 1-year full-chemistry benchmarks.

Feature Submitted by Type Notes
Aromatic VOC chemistry Yingying Yan (PKU)
Jintai Lin (PKU)
Science
  • Delivered to GCST (Jul 2019)
Small alkyl nitrate chemistry Jenny Fisher (Wollongong) Science
  • Delivered to GCST (Jul 2019)
Methanol as part of standard chemical mechanism Dylan Millet (U Minnesota)
Katie Travis (NASA)
Science
  • Implemented in v10-01; Needs to be brought up to GEOS-Chem 12

12.8.0

This version will require 1-month and 1-year full-chemistry benchmarks.

Feature Submitted by Type Notes
Isoprene chemistry Kelvin Bates (Harvard) Science
Wet deposition parameterization Kelvin Bates (Harvard)
GCST
Science

Priorities not yet assigned to a particular version

The following items have been identified as priorities for GEOS-Chem, but have not yet been assigned to a particular GEOS-Chem version.

Ready to go in

Feature Submitted by Type Notes
Chemistry updates
Implement H2 chemistry in UCX Chris Holmes (FSU) Science
Joint CO, CO2, CH4 simulation Beata Bukosa (Wollongong) Science
  • Delivered to GCST (Jun 2019)
Emissions and surface fluxes updates
Updated Streets Hg emissions Colin Thackray (Harvard) Science
Updated EDGAR 4.3 Hg emissions Amanda Giang (UBC) Science
Offline CLM Harmonization Anthony Wong (BU)
Jeff Geddes (BU)
Science
CH4 soil absorption from MeMo model Melissa Sulprizio (Harvard) Science
Aerosol updates
Arctic marine SOA Betty Croft (Dalhousie) Science
  • Details on wiki only, not in standard code

--Melissa Sulprizio (talk) 16:38, 14 May 2019 (UTC)

Almost there (< 6 months)

Item Author(s) Type Notes
Diagnostic to archive XCO2, XCO, and XCH4 Dylan Jones (Toronto) Science
Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations Kazu Miyazaki (JPL) Science
Evaluate the impact on the tropsophere of using the family approach for transport in the stratosphere Christoph Keller (NASA/GMAO) Science
Examine differences in the lightning NOx schemes in GEOS-Chem and GMI Christoph Keller (NASA/GMAO)
Lee Murray (Rochester)
Science
HMS chemistry Jonathan Moch (Harvard) Science
Heterogeneous sulfate production Lin Zhang (PKU)
Becky Alexander (UW)
Yuxuan Wang (U. Houston)
Science
BrC aging Xuan Wang (Harvard)
Melanie Hammer(Dalhousie)
Science
Retire carbon-based units for VOCs GCST Science
Ozone deposition to the ocean Ryan Pound (York)
Mat Evans (York)
Science
Latitudinally and monthly resolved fixed surface concentrations for GGs back to 1850 Tomás Sherwen (York)
Lee Murray (Rochester)
Science
Update of US emissions to NEI16 Barron Henderson (EPA) Science
Updated surface ocean dissolved Hg0 from MITgcm Yanxu Zhang (Nanjing) Science
HEMCO improvements Christoph Keller (NASA/GMAO)
GCST
Structural
Cmake in GCHP Liam Bindle (Dalhousie) Structural
One-Way Coupling w/ GISS ModelE3 Lee Murray (Rochester)
Eric Leibensperger (SUNY Plattsburgh)
Structural
Online Coupling w/ GEOS CCM Lizzie Lundgren (Harvard)
Lu Hu (U. MT)
Christoph Keller (NASA/GMAO)
Structural
Shared Socioeconomic Pathways Emission Inventories Hong Liao (NUIST) Science

--Melissa Sulprizio (talk) 16:38, 14 May 2019 (UTC)

Over the horizon (6-12 months)

Item Author(s) Type Notes
Update OCS simulation in the standard code Kevin Bowman (JPL) Science
Examine what are the differences in the PSC implementation in GEOS-Chem and GMI and assess the implications of these differences for startospheric ozone Susan Strahan (Goddard)
Sebastian Eastham (MIT)
Science
Rainout and washout update Gan Luo(SUNY-Albany)
Fangqun Yu (SUNY-Albany)
Science
Rediagnosis of RAS convection in GEOS-Chem Tailong He (Toronto)
Dylan Jones (Toronto)
Andrea Molod (NASA/GMAO)
Science
New schedule for tracer transport benchmarks (FP change, scavenging change, or major release) Andrea Molod (NASA/GMAO) Science
Updated cloud water pH Viral Shah (Harvard)
Jonathan Moch (Harvard)
Science
Halogen chemistry update Tomas Sherwen (York)
Xuan Wang (Harvard)
Shuting Zhai (UW)
Science
Methylethylketone chemistry Jared Brewer (CSU) Science
Add sulfate dependence to SOA yield from isoprene in simple SOA Eloïse Marais (Leicester) Science
Trace metal simulation Junwei Xu (Dalhousie) Science
Hg gas-phase photo-reduction Colin Thackray (Harvard) Science
Move GEOS-Chem Classic run directory creation from Unit Tester to source code GCST Structural
Dynamic diagnostic array size allocation based on settings in HISTORY.rc GCST Structural
Removal of binary punch diagnostics GCST Structural
GCPy 1-year benchmark and continued development GCST Structural
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Amos Tai (CUHK) Science
Canopy Physics Model Sam Silva (MIT) Structural
Landcover/Fire Emissions Offline LPJlmfire Loretta Mickley (Harvard) Science

--Melissa Sulprizio (talk) 16:38, 14 May 2019 (UTC)

Longer term (12-24 months)

Item Author(s) Type Notes
Implement isotope simulation for CO and CH4 in GCHP Lee Murray (Rochester) Science
Migrate LETFK DA scheme to GCHP Kazu Miyazaki (JPL) Science
Super fast chemistry scheme Benjamin Brown-Steiner (AER)
Makoto Kelp (Harvard)
Science
Add non-volatile cations to ISORROPIA Becky Alexander (UW) Science
Update Europe emissions to EMEP 2016 Eloise Marais (Leicester) Science
MEGAN3 Sam Silva (MIT)
Jen Kaiser (GIT)
Yuxuan Wang (UH)
Science
DMS oxidation scheme updating Becky Alexander (UW)
Qianjie Chen (UW)
Science
Streamlining of specialty simulations through HEMCO and KPP GCST
Chris Holmes (FSU)
Colin Thackray for POPs (Harvard)
Peter Ivatt (York) for PAH
Science
Hg in WRF-GC Yanxu Zhang (Nanjing) Science
Hg with blowing snow Yanxu Xhang (Nanjing) Science
Updated treatment of Hg in ocean Chris Holmes (FSU) Science
GTMM updates Ben Geyman (Harvard) Science
Complex / multicomplex variables Shannon Capps (Drexel) Structural
Build KPP when you compile GC GCST Structural
Restructure source code folders GCST Structural
Archived CMIP6 Met Products for GEOS-Chem Input Lee Murray (Rochester) Science

--Melissa Sulprizio (talk) 16:38, 14 May 2019 (UTC)


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