GEOS-Chem model development priorities: Difference between revisions

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!width="100px"|Ease of implementation
!width="100px"|Ease of implementation
!width="300px"|Notes and References
!width="300px"|Notes and References
|-valign="top"
|ALK4 & R4N2 chemistry
|Jared Brewer (UMN)
|Chemistry
|Simple
|
*[https://github.com/geoschem/geos-chem/pull/2352 geos-chem PR #1625]
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Yi Wang (Iowa)<br>Jun Wang (Iowa)
|Emissions
|Emissions
|Medium
|Medium
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|-valign="top"
|-valign="top"
|ALK4 & R4N2 chemistry
|Fix pressure handling in HEMCO standalone
|Jared Brewer (UMN)
|Melissa Sulprizio (Harvard)
|Chemistry
|HEMCO
|Simple
|
|
*[https://github.com/geoschem/geos-chem/pull/2352 geos-chem PR #1625]
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]


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|-valign="top"
|-valign="top"
|Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol
|Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol
|Camilo Serrano and Andreas Zuend (McGill)
|Camilo Serrano (McGill)<br>Andreas Zuend (McGill)
|Aerosols
|Aerosols
|Not delivered
|Not delivered
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|-valign="top"
|-valign="top"
|Seasalt aerosol from sea ice leads (2002-2011)
|Seasalt aerosol from sea ice leads (2002-2011)
|Hannah (UIUC)
|Hannah Horrowitz (UIUC)
|Aerosols
|Aerosols
|Not delivered
|Not delivered
|
|
*Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)


|-valign="top"
|-valign="top"
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|-valign="top"
|-valign="top"
|Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6
|Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6
|Katherine Travis (NASA LARC)
|Katie Travis (NASA LARC)
|Chemistry
|Chemistry
|Not delivered
|Not delivered
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|-valign="top"
|-valign="top"
|Hlobal organic N dep from various emissions; nitrate aromatics updates
|Hlobal organic N dep from various emissions; nitrate aromatics updates
|Tzung-May Fu (SUSTech)
|May Fu (SUSTech)
|Chemistry +<br>Deposition
|Chemistry +<br>Deposition
|Not delivered
|
|-valign="top"
|Adaptive chemistry (domain-specific) in WRF-GC
|Tzung-May Fu (SUSTech)
|Chemistry
|Not delivered
|Not delivered
|
|
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|-valign="top"
|-valign="top"
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Joey Lam, Amos Tai (CUHK)
|Joey Lam (CUHK)<br>Amos Tai (CUHK)
|Dry deposition
|Dry deposition
|Not delivered
|Delivered<br>Feb 2021
|
|
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]


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|-valign="top"
|FRP-based fire emissions for eastern US at 0.2
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
|Chris Holmes (FSU)
|Chris Holmes (FSU)
|Emissions
|Emissions
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|Not delivered
|Not delivered
|
|
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.


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|Not delivered
|Not delivered
|
|
*https://zenodo.org/records/8372652


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|-valign="top"
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Yang Li (Baylor University), Loretta Mickley (Harvard)
|Yang Li (Baylor U)<br>Loretta Mickley (Harvard)
|Emissions
|Emissions
|Not delivered
|Delivered
|
|
*Data involves many files- need to think about temporal frequency


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|-valign="top"
|Australian emissions
|Australian emissions
|Stephen MacFarlane/Jenny Fisher (UWollongong)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Emissions
|Emissions
|Not delivered
|Not delivered
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|-valign="top"
|-valign="top"
|GC-YIBS with online fire emissions
|GC-YIBS with online fire emissions
|Xu Yue; Hong Liao; Xu Yue (NUIST)
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
|External Model
|External Model
|Not delivered
|Not delivered
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|Not delivered
|Not delivered
|
|
*This will be the default OH, but users will have the option of selecting other OH fields


|}
|}
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|-valign="top"
|Fixes to stratospheric aerosol settling
|Fixes to stratospheric aerosol settling
|Connor Barker, Eloise Marais (UCL)
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Aerosols
|Aerosols
|
|
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|-valign="top"
|-valign="top"
|DMS chemistry in v14
|DMS chemistry in v14
|Linia Tashmim and Will Porter (UC Riverside)
|Linia Tashmim (UCR)<br>Will Porter (UCR)
|Chemistry
|Chemistry
|
|
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|-valign="top"
|-valign="top"
|KPP standalone + 3D Interface
|KPP standalone + 3D Interface
|Obin Sturm (PSC)
|Obin Sturm (USC)
|Chemistry
|Chemistry
|
|
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|-valign="top"
|-valign="top"
|Updated aromatic oxidation
|Updated aromatic oxidation
|Stephen MacFarlane/Jenny Fisher (University of Wollongong)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|Chemistry
|
|
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|Chemistry
|Chemistry
|
|
*Will have to change negative emissions from soil to a first-order loss process


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|-valign="top"
|Active mesospheric chemistry
|Active mesospheric chemistry
|Helena McDonald (MIT), Seb Eastham (IC)
|Helena McDonald (MIT)<br>Seb Eastham (ICL)
|Chemistry
|Chemistry
|
|
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|-valign="top"
|-valign="top"
|Column diagnostics
|Column diagnostics
|Lizzie Lundgren (Harvard), Viral Shah (GMAO)
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
|Diagnostics
|Diagnostics
|
|
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|-valign="top"
|Dry deposition diagnostics by land cover
|Dry deposition diagnostics by land cover
|Holly Nowell, Chris Holmes (FSU)
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Dry Deposition
|Dry Deposition
|
|
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|-valign="top"
|-valign="top"
|Dry deposition process diagnostics
|Dry deposition process diagnostics
|Holly Nowell, Chris Holmes (FSU)
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Dry Deposition
|Dry Deposition
|
|
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|-valign="top"
|-valign="top"
|Historic biomass burning ()
|Historic biomass burning (1750-2010)
|Pengfei (Gtech)
|Pengfei (Gtech)
|Emissions
|Emissions
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|-valign="top"
|-valign="top"
|Rice methane
|Rice methane emissions
|Zichong Cheng (Harvard)
|Zichong Cheng (Harvard)
|Emissions
|Emissions+<br>Carbon simulation
|
|


|-valign="top"
|-valign="top"
|Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.)
|Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.)
|Katie Travis / Kelvin Bates
|Katie Travis (NASA)<br>Kelvin Bates (CU Boulder)
|Emissions
|Emissions
|
|
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|-valign="top"
|-valign="top"
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Melissa Sulprizio (Harvard), Tia Scarpelli (Carbon MAPPER)
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
|Emissions
|Emissions
|
|


|-valign="top"
|-valign="top"
|New prior biospheric fluxes from CMS-FLUX and GMAO
|New prior CO2 biospheric fluxes from CMS-FLUX and GMAO
|Kevin Bowman (JPL), Lesley Ott (GMAO)
|Kevin Bowman (JPL)<br>Lesley Ott (GMAO)
|Emissions
|Emissions
|
|
*GMAO can provide high-resolution  fluxes (as high as 12 km)


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|-valign="top"
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|-valign="top"
|-valign="top"
|Improve pressure handling in GCHP advection
|Improve pressure handling in GCHP advection
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
|GCHP
|GCHP
|
|
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|Add error trap for duplicate scale factors in HEMCO
|Add error trap for duplicate scale factors in HEMCO
|Bob Yantosca (Harvard)
|Bob Yantosca (Harvard)
|HEMCO
|
|-valign="top"
|Fix pressure handling in HEMCO standalone
|Melissa Sulprizio (Harvard)
|HEMCO
|HEMCO
|
|
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|-valign="top"
|-valign="top"
|Strat-adjusted RF in GCC and GCHP
|Strat-adjusted RF in GCC and GCHP
|Connor Barker, Eloise Marais (UCL)
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Radiation
|Radiation
|
|
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|-valign="top"
|-valign="top"
|updates to Luo deposition scheme
|Updates to Luo deposition scheme
|Gan Luo
|Gan Luo (Albany)
|Wet Deposition
|Wet Deposition
|
|
*New version, keep as switch (not default)


|-valign="top"
|-valign="top"
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Gan Luo (Albany), Fangqun Yu (Albany)
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
|Wet Deposition
|Wet Deposition
|
|
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|-valign="top"
|-valign="top"
|ML algorithms for bulk aerosol
|ML algorithms for bulk aerosol
|Arshad Nair and Fangqun Yu (SUNY Albany)
|Arshad Nair (Albany)<br>Fangqun Yu (Albany)
|Aerosols
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Heterogeneous sulfate chemistry
|Heterogeneous sulfate chemistry
|Katie Travis
|Katie Travis (NASA)
|Chemistry
|Chemistry
|
|
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|-valign="top"
|-valign="top"
|H2 as an active species
|H2 as an active species
|Seb Eastham (IC)
|Seb Eastham (ICL)
|Chemistry
|Chemistry
|
|
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|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
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|-valign="top"
|-valign="top"
|Mesospheric source of CO
|Mesospheric source of CO
|Dylan Jones (UofT), Pam Wales (GSFC)
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
|Emissions
|Emissions
|
|
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|-valign="top"
|-valign="top"
|Drought-stress algorithm
|Drought-stress algorithm
|Wei Li (U. Houston)
|Wei Li (Houston)
|Emissions
|Emissions
|
|
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|-valign="top"
|-valign="top"
|Canadian forest fire prediction system (Canada government forecast model)
|Canadian forest fire prediction system (Canada government forecast model)
|Robin (Montreal)
|Robin Stevens (Montreal)
|Emissions
|Emissions
|
|
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|-valign="top"
|-valign="top"
|Furan emission factors (updates existing emissions)
|Furan emission factors (updates existing emissions)
|Lu Hu/Lixu Jin (Montana)
|Lu Hu (Montana)<br>Lixu Jin (Montana)
|Emissions
|Emissions
|
|
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|External model
|External model
|
|


|-valign="top"
|-valign="top"
|Hybrid MPI-OpenMP in GCHP
|Hybrid MPI-OpenMP in GCHP
|Seb Eastham (MIT); Killian Murphy (York); Lizzie Lundgren (Harvard)
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>Lizzie Lundgren (Harvard)
|GCHP
|GCHP
|
|


|-valign="top"
|-valign="top"
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|Performance
|Performance
|
|


|-valign="top"
|-valign="top"
|Photophysical oxidation of aldehydes
|Photophysical oxidation of aldehydes
|Paulo Sebastianelli/Jenny Fisher (University of Wollongong)
|Paulo Sebastianelli (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|Chemistry
|
|
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|-valign="top"
|-valign="top"
|Furans emission and chemistry
|Furans emission and chemistry
|Lixu Jin/Lu Hu(U Montana)
|Lixu Jin (Montana)<br>Lu Hu (Montana)
|Chemistry + <br>Emissions
|Chemistry + <br>Emissions
|
|


|-valign="top"
|-valign="top"
|Cl2 prodcution from Fe aerosol Qianjie Chen
|Cl2 prodcution from Fe aerosol
|(Hong Kong Poly)/Becky Alexander (UW)
|Qianjie Chen (HK Poly)<br>Becky Alexander (UW)
|Chemistry
|Chemistry
|
|
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|-valign="top"
|CESM2-GC offline
|CESM2-GC offline
|Seb Eastham (ICL); Lee Murray (Rochester)
|Seb Eastham (ICL)<br>Lee Murray (Rochester)
|Met fields
|Met fields
|
|
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|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
|Bob Yantosca (Harvard); Lee Murray (Rochester)
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
|Structural
|Structural
|
|
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|-valign="top"
|-valign="top"
|Online OCIM ocean biogeochemistry
|Online OCIM ocean biogeochemistry
|Lee Murray (Rochester); Hannah Horowitz (UIUC); Chris Holmes (FSU)
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
|Chemistry
|Chemistry
|
|
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|-valign="top"
|-valign="top"
|HFO and CF3CHO
|HFO and CF3CHO
|Beth Killen/Jenny Fisher (University of Wollongong)
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|Chemistry
|
|
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|-valign="top"
|-valign="top"
|Iodine chemistry
|Iodine chemistry
|Becky Alexander (UW)/Xuan Wang (cityU HK)
|Becky Alexander (UW)<br>Xuan Wang (CUHK)
|Chemistry
|Chemistry
|
|
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|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|Hg simulation
|
|
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|Soil Hg emissions 2010-2020
|Soil Hg emissions 2010-2020
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|Hg simulation
|
|

Revision as of 13:33, 26 June 2024

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. For history of past releases see the GEOS-Chem Versions wiki page.

Merged and awaiting release

See the links below for items merged and awaiting release.

Mergeable at any time Version in development
GEOS-Chem no-diff-to-benchmark GEOS-Chem 14.5.0

Feature integration in progress

Features listed in this table are actively being integrated into GEOS-Chem by the GEOS-Chem Support Team. In addition, we continuously implement structural updates in the model to maintain and develop coupling with other models including GEOS, CESM, and the model adjoint.

Feature Contributor(s) Model scope Ease of implementation Notes and References
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry Simple
New soil NOx parameterization Yi Wang (Iowa)
Jun Wang (Iowa) 		Emissions Medium
Fix pressure handling in HEMCO standalone Melissa Sulprizio (Harvard) HEMCO
Horizontal flux regridding fix in MAPL Tom Clune (GMAO) GCHP Medium
Cloud-J 7.7.2 for greater flexibility in external models Lizzie Lundgren (Harvard) Photolysis Medium
GCHP run directory improvements for mass flux, stretched grid, and GEOS-IT runs Lizzie Lundgren (Harvard) GCHP Medium
Fixes for GEOS-Chem 14.4 in CESM Haipeng Lin (Harvard)
Lizzie Lundgren (Harvard) 		CESM Medium

Prioritized and in the queue

Features listed in this table are prioritized for integration into GEOS-Chem in the near future.

Feature Contributor(s) Model scope Ease of implementation Delivery status Notes and References
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple Delivered June 2024
Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4 Lizzie Lundgren (Harvard) GC-Classic Medium

Ready to go in

Features listed in this table are ready to go in but have either not been delivered or are not yet prioritized for integration into GEOS-Chem.

Feature Contributor(s) Model scope Delivery status Notes and Refereneces


Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol Camilo Serrano (McGill)
Andreas Zuend (McGill) 		Aerosols Not delivered
Extend aerosol settling Eloise Marais (UCL) Aerosols Not delivered
Comment back in Ca, Mg, and K cations in aerosol thermo (HETP) Becky Alexander (UW) Aerosols Not delivered
Seasalt aerosol from sea ice leads (2002-2011) Hannah Horrowitz (UIUC) Aerosols Not delivered
  • Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
P/L species should not contribute to the error norm Obin Sturm (USC) Chemistry Not delivered
Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6 Katie Travis (NASA LARC) Chemistry Not delivered
Monoterpene oxidation more species & oxidation products Kevin Bates (CU Boulder) Chemistry Not delivered
PPN photolysis Eloise Marais (UCL) Chemistry Not delivered
Hlobal organic N dep from various emissions; nitrate aromatics updates May Fu (SUSTech) Chemistry +
Deposition 		Not delivered
ALK4 from biogenic vs anthro Jared Brewer (UMN) Chemistry Not delivered
Dry deposition to F90 to improve readability Chris Holmes (FSU) Dry Deposition Not delivered
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam (CUHK)
Amos Tai (CUHK) 		Dry deposition Delivered
Feb 2021
FRP-based fire emissions for eastern US at 0.2 (2019-2020) Chris Holmes (FSU) Emissions Not delivered
China agriculture NH3 emissions Amos Tai (CUHK) Emissions Not delivered
T-dependent anthropogenic VOCs May Fu (SUSTech) Emissions Not delivered
  • Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.
New source functions for transport tracers beryllium-7 and beryllium-10 Minjie Zheng (ETH) Emissions Not delivered
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor U)
Loretta Mickley (Harvard) 		Emissions Delivered
  • Data involves many files- need to think about temporal frequency
Australian emissions Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Emissions Not delivered
Hg geogenic emissions (volcanic, rock weathering) Eric Roy (MIT) Emissions Not delivered
Hg biomass burning - FINN2.5 & GFED4 Eric Roy (MIT) Emissions Not delivered
BCC-GC online Lin Zhang (PKU) External Model Not delivered
GC-YIBS with online fire emissions Xu Yue (NUIST)
Hong Liao (NUIST) 		External Model Not delivered
GISS-GC offline (GCAP) Lee Murray (Rochester) GCAP Not delivered
Archived TCR-2 OH fields for carbon simulations Kazu Miyazaki (JPL) Input data Not delivered
  • This will be the default OH, but users will have the option of selecting other OH fields

Almost there (< 6 months)

Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.

Feature Contributor(s) Model scope Notes and References


Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics
Dust non-sphericity impacts on optical properties Inderjeet Singh (WashU) Aerosols
Fixes to stratospheric aerosol settling Connor Barker (UCL)
Eloise Marais (UCL) 		Aerosols
DMS chemistry in v14 Linia Tashmim (UCR)
Will Porter (UCR) 		Chemistry
KPP standalone + 3D Interface Obin Sturm (USC) Chemistry
Load balancing in chemistry solver (GCHP) Zhouran (Jordan) Sun (WashU) Chemistry +
Performance
UCX chemistry in mesosphere (GCHP/GCClassic) Helena McDonald (MIT) Chemistry
Updated aromatic oxidation Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
MCO3 uptake by cloud forming MP; leading to lower PAN Laura Yang (Harvard) Chemistry
Implement isotope simulation for CH4 in the carbon simulation Lee Murray (Rochester) Chemistry
  • Will have to change negative emissions from soil to a first-order loss process
Active mesospheric chemistry Helena McDonald (MIT)
Seb Eastham (ICL) 		Chemistry
Documentation for adding additional aerosol species Connor Barker (UCL) Documentation
Column diagnostics Lizzie Lundgren (Harvard)
Viral Shah (GMAO) 		Diagnostics
TOMAS rate diagnostics -- improve performance Betty Croft (WashU/Dal) Diagnostics +
Performance
Fix obspack - not working in 14.4.0 Bob Yantosca (Harvard) Diagnostics
Archive gamma values from heterogeneous chemistry Bob Yantosca (Harvard) Diagnostics
RRTMG Documentation GCST Documentation
Canopy Physics Model Sam Silva (MIT) Dry Deposition
Dry deposition diagnostics by land cover Holly Nowell (FSU)
Chris Holmes (FSU) 		Dry Deposition
Dry deposition process diagnostics Holly Nowell (FSU)
Chris Holmes (FSU) 		Dry Deposition
Biomass burning for TOMAS Nicole June (CSU) Emissions +
Microphysics
Historic biomass burning (1750-2010) Pengfei (Gtech) Emissions
Rice methane emissions Zichong Cheng (Harvard) Emissions+
Carbon simulation
Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.) Katie Travis (NASA)
Kelvin Bates (CU Boulder) 		Emissions
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Tia Scarpelli (Carbon Mapper)
Melissa Sulprizio (Harvard) 		Emissions
New prior CO2 biospheric fluxes from CMS-FLUX and GMAO Kevin Bowman (JPL)
Lesley Ott (GMAO) 		Emissions
  • GMAO can provide high-resolution fluxes (as high as 12 km)
Snowpack Br2 emission Chris Holmes (FSU) Emissions
EDGAR v8.1_toxHg emissions for 1970-2022 Eric Roy (MIT) Emissions
Improve pressure handling in GCHP advection Yuanjian Zhang (WashU)
Seb Eastham (ICL) 		GCHP
Add error trap for duplicate scale factors in HEMCO Bob Yantosca (Harvard) HEMCO
Integration testing: Add stretched grid Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Add GCAP2 GCST Quality Assurance
Integration testing: Add GCHP mass flux run Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Add run with all diagnostics turned on GCST Quality Assurance
Integration testing: Reinstate TOMAS40 Betty Croft (Dalhousie/WashU) Quality Assurance
Strat-adjusted RF in GCC and GCHP Connor Barker (UCL)
Eloise Marais (UCL) 		Radiation
Continue cleanup of C-preprocessor switches Lizzie Lundgren (Harvard) Structural
Updates to Luo deposition scheme Gan Luo (Albany) Wet Deposition
  • New version, keep as switch (not default)
Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer Gan Luo (Albany)
Fangqun Yu (Albany) 		Wet Deposition

Over the horizon (6-12 months)

Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.

Feature Contributor(s) Model scope Notes and References
ML algorithms for bulk aerosol Arshad Nair (Albany)
Fangqun Yu (Albany) 		Aerosols
Heterogeneous sulfate chemistry Katie Travis (NASA) Chemistry
H2 as an active species Seb Eastham (ICL) Chemistry
HCN, acetonitrile as fire tracers Kevin Bates (CU Boulder) Chemistry
Implement ethane in carbon simulation Yuzhong Zhang (Westlake) Chemistry
VCPs emissions Kelvin Bates (CU Boulder) Emissions
Mesospheric source of CO Dylan Jones (UofT)
Pam Wales (NASA GSFC) 		Emissions
Drought-stress algorithm Wei Li (Houston) Emissions
Physically-based resolution correction for BVOC emissions using MEGAN May Fu (SUSTech) Emissions
Canadian forest fire prediction system (Canada government forecast model) Robin Stevens (Montreal) Emissions
Furan emission factors (updates existing emissions) Lu Hu (Montana)
Lixu Jin (Montana) 		Emissions
Cooking emissions (not biofuel) Kelvin Bates (CU Boulder) Emissions
State-specific annual emissions scaling factors (US) (1990-2021) Ishir Dutta (MIT) Emissions
GISS-GC online Lee Murray (Rochester) External model
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York)
Lizzie Lundgren (Harvard) 		GCHP
MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files Lizzie Lundgren (Harvard) GCHP
MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files Lizzie Lundgren (Harvard) GCHP
MAPL3: Wildcards in GCHP History Lizzie Lundgren (Harvard) GCHP
MAPL3: Output emissions with positive up convention in GCHP Lizzie Lundgren (Harvard) GCHP
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Performance
Photophysical oxidation of aldehydes Paulo Sebastianelli (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
DMS updates Will Porter (UCR) Chemistry
Furans emission and chemistry Lixu Jin (Montana)
Lu Hu (Montana) 		Chemistry +
Emissions
Cl2 prodcution from Fe aerosol Qianjie Chen (HK Poly)
Becky Alexander (UW) 		Chemistry
VCP, cooking: tracers species added i.e., D5, ethanol affecting PAN Kevin Bates (CU Boulder) Emissions
bidirectional land-atmosphere exchange for Hg Yuying Cui (MIT/Tsinghua) Hg simulation
OH covariances for inversions Elise Penn (Harvard) Inversions
CESM2-GC offline Seb Eastham (ICL)
Lee Murray (Rochester) 		Met fields
Re-binning of off-line sea salt and dust for TOMAS Betty Croft (Dalhousie) Microphysics
TOMAS nucleation updates Sam O'Donnell (CSU) Microphysics
Stratospheric aerosol APM Fangqun Yu (SUNY Albany) Microphysics
Transition from MERRA-2 to GEOS-IT for benchmarking Yuanjian Zhang (WashU) Quality Assurance
Automate integration testing on AWS Yidan Tang (WashU) Quality Assurance
Integration testing: Add across end of year run GCST Quality Assurance
Integration testing: Add GEOS-IT Yuanjian Zhang (WashU) Quality Assurance
Separate mixing, emissions, and drydep Yuanjian Zhang (WashU) Structural
Intel IFX compiler Bob Yantosca (Harvard) Structural
CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code Bob Yantosca (Harvard)
Lee Murray (Rochester) 		Structural
Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO Lizzie Lundgren (Harvard) Structural
Limit allocation of State_Met to what is needed per simulation Melissa Sulprizio (Harvard) Structural

Longer term (12-24 months)

Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.

Feature Contributor(s) Model scope Notes and References
Modal aerosol model (MAM7) in GCHP Shreya Sharma (MIT) Aerosols
Online OCIM ocean biogeochemistry Lee Murray (Rochester)
Hannah Horowitz (UIUC)
Chris Holmes (FSU) 		Chemistry
Perchlorate chemistry Yuk Chun Chan (UW) Chemistry
Non-stomatal dry deposition (2-layer canopy model) Michael Vermeuel (Purdue) Dry Deposition
Continental chloride particle emissions (salty dust, road salt) Jessica Haskins (Utah) Emissions
Multivolatility emission inventory to address gaps in EDGAR/HTAP etc. Ruochong (Tshingua) Emissions
Lightning NOx production rates Bex Horner (UCL) Emissions
HFO and CF3CHO Beth Killen (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
Glyoxal updates from isoprene Tzung-May Fu (SUSTech) Chemistry
Iodine chemistry Becky Alexander (UW)
Xuan Wang (CUHK) 		Chemistry
Chlorine/Perchlorate Yukchun Chan (UW) Chemistry
Playa dust chemistry to improve Cl over land Jessica Haskins (Utah) Chemistry
GFED5 biomass burning Eric Roy (MIT) Emissions
Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble Eric Roy (MIT)
Ari Feinberg (IQF-CSIC) 		Hg simulation
Soil Hg emissions 2010-2020 Eric Roy (MIT)
Ari Feinberg (IQF-CSIC) 		Hg simulation
Air-sea exchange parameterization Eric Roy (MIT) Hg simulation
Soil Hg emissions parameterization Ari Feinberg (IQF-CSIC) Hg simulation
Sea salt uptake of GOM Eric Roy (MIT) Hg simulation
Photoreduction rate constant Eric Roy (MIT) Hg simulation
new observations (2010-2020) in standardized Hg benchmark for intercomparison Eric Roy (MIT)/Ari Feinberg (IQF-CSIC) Hg simulation
Hg simulation in GCHP Eric Roy (MIT) Hg simulation
OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB) Hannah Horowitz (UIUC) Hg simulation
possibly updating Hg oxidation chemistry based on Utah field campaigns Jessica Haskins (Utah) Hg simulation
New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC) Input data
Extend IMI to CO2 (ICI) Hannah Nesser (JPL) Inversions
Global emission inventory of metals Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U) Metals simulation
Investigate and improve performance of aerosol chemistry Bob Yantosca (Harvard) Performance
PAH - update from version 11 Lexia Cicone (MIT) POPs simulation
Species database more accessible; doc updates; TOL discussion Jessica Haskins (Utah) Structural
Stretched-grid plotting in GCPy Killian Murphy (York) Tools
Model inter-comparison of transport (GEOS, GCHP, GCClassic) Lizzie Lundgren (Harvard), Emma Knowland (NASA) Transport
Comparing mass fluxes in GCHP vs. traditional lat/lon wind Yuanjian Zhang (WashU), Seb Eastham (ICL) Transport
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