GEOS-Chem model development priorities: Difference between revisions

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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
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 [https://geos-chem.seas.harvard.edu/geos-working-groups Working Groups] and the [https://geos-chem.seas.harvard.edu/geos-steering-cmte Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
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 [https://geos-chem.seas.harvard.edu/geos-working-groups Working Groups] and the [https://geos-chem.seas.harvard.edu/geos-steering-cmte Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
== Release schedule ==
Please see the [http://wiki.seas.harvard.edu/geos-chem/images/e/e1/GEOS-Chem_Release_Proposal.pdf GEOS-Chem Release Proposal] outlining the procedure and schedule for releasing GEOS-Chem versions.


== Merged and awaiting release ==
== Merged and awaiting release ==
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{| border=1 cellspacing=0 cellpadding=5  
{| border=1 cellspacing=0 cellpadding=5  
|-bgcolor="#CCCCCC"
|-bgcolor="#CCCCCC"
!width="200px"|Patch version in development
!width="300px"|Mergeable at any time
!width="200px"|Major version in development
!width="200px"|Version in development


|-valign="top"
|-valign="top"
|align="center"| -
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
|align="center"|'''[[GEOS-Chem 14.2.0]]'''
|align="center"|'''[[GEOS-Chem 14.5.0]]'''


|}
|}
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== Feature integration in progress ==
== 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.  
Features listed in this table are actively being integrated into GEOS-Chem by the [https://geoschem.github.io/support-team.html 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.  


{| border=1 cellspacing=0 cellpadding=5  
{| border=1 cellspacing=0 cellpadding=5  
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!width="300px"|Notes and References
!width="300px"|Notes and References


|-valign="top"<
|-valign="top"
|Upgrade Fast-JX to Cloud-J
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Lizzie Lundgren (Harvard)
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Photolysis
|Emissions
|Complicated
|Medium
|
|
*Ongoing
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
*Incorporates new met field TSOIL1


|-valign="top"
|-valign="top"
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|Horizontal flux regridding fix in MAPL
|Bob Yantosca (Harvard)
|Tom Clune (GMAO)
|Structural
|GCHP
|Complicated
|Medium
|
|
*Ongoing
*[https://github.com/geoschem/MAPL/pull/36 MAPL PR #36]


|-valign="top"
|-valign="top"
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Cloud-J 7.7.2 for greater flexibility in external models
|Bob Yantosca (Harvard)
|Lizzie Lundgren (Harvard)
|Model performance
|Photolysis
|Medium
|Medium
|
|
*Ongoing (will be done as time allows)
*[https://github.com/geoschem/Cloud-J/pull/17 Cloud-J PR #17]
*[https://github.com/geoschem/geos-chem/pull/2342 GEOS-Chem PR #2342]
* More Cloud-J PRs in progress


|-valign="top"
|-valign="top"
|TOMAS in GCHP
|GCHP run directory improvements for mass flux, stretched grid, and GEOS-IT runs
|Betty Croft (WashU)
|Lizzie Lundgren (Harvard)
|Aerosols
|GCHP
|Medium
|Medium
|
|
*Slated for 14.2.0
*[https://github.com/geoschem/geos-chem/pull/2326 GEOS-Chem PR #2326]
*[https://github.com/geoschem/GCHP/pull/221 geoschem/GCHP PR #221]
*[https://github.com/geoschem/geos-chem/pull/1261 geoschem/geos-chem PR #1261]
*[https://github.com/geoschem/HEMCO/pull/145 geoschem/HEMCO PR #145]


|-valign="top"
|-valign="top"
|Update transport tracer simulation for consistency with the tracer gridded component in GEOS
|Fixes for GEOS-Chem 14.4 in CESM
|Melissa Sulprizio (Harvard)
|Haipeng Lin (Harvard)<br>Lizzie Lundgren (Harvard)
|TransportTracer simulation
|CESM
|Medium
|Medium
|
|
*Ongoing
*[https://github.com/geoschem/geos-chem/pull/2348 GEOS-Chem PR #2348]
*[https://github.com/geoschem/geos-chem/pull/2349 GEOS-Chem PR #2349]
* More PRs in progress
 
|}
 
== Prioritized and in the queue ==
 
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
 
{| border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
!width="200px"|Feature
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Ease of implementation
!width="100px"|Delivery status
!width="300px"|Notes and References


|-valign="top"
|-valign="top"
|[https://doi.org/10.5194/acp-23-1227-2023 Nitrate photolysis]
|ALK4 & R4N2 chemistry
|Viral Shah (NASA GMAO)
|Jared Brewer (UMN)
|Chemistry
|Chemistry
|TBD
|Delivered
|
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]
|-valign="top"
|New version of CEDS at 0.1 deg
|Dandan Zhang (WashU)
|Emissions
|Simple
|Simple
|Delivered June 2024
|
|
*Slated for 14.2.0
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
*See [https://github.com/geoschem/geos-chem/pull/1623 geoschem/geos-chem PR #1623]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1529 Bug fix: Initialize CO2 to a relevant value for full-chemistry]
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
|Mike Long (GMAO)
|Lizzie Lundgren (Harvard)
|Chemistry
|GC-Classic
|Simple
|Medium
|
|
*[https://github.com/geoschem/HEMCO/issues/18 HEMCO issue #18]
 
|}
 
== 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.
 
{| border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
!width="200px"|Feature
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Delivery status
!width="300px"|Notes and Refereneces
 
 
|-valign="top"
|Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol
|Camilo Serrano and Andreas Zuend (McGill)
|Aerosols
|Not delivered
|
|
*Slated for 14.2.0


|-valign="top"
|-valign="top"
|Retire all BPCH diagnostics
|Extend aerosol settling
|Bob Yantosca (Harvard)
|Eloise Marais (UCL)
|Diagnostics
|Aerosols
|Simple
|Not delivered
|
|
*Slated for 14.2.0
* Can be done immediately following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1429 Update SO4 production in cloud-droplets over oceans]
|Comment back in Ca, Mg, and K cations in aerosol thermo (HETP)
|Becky Alexander (UW)
|Becky Alexander (UW)
|Aerosols
|Aerosols
|Simple
|Not delivered
|
 
|-valign="top"
|Seasalt aerosol from sea ice leads (2002-2011)
|Hannah (UIUC)
|Aerosols
|Not delivered
|
|
*Slated for 14.2.0
*See [https://github.com/geoschem/geos-chem/pull/1434 geoschem/geos-chem PR #1434]
*See [https://github.com/geoschem/geos-chem/issues/1429 geoschem/geos-chem #1429]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/1292 Update entrainment-limited kinetics in clouds]
|P/L species should not contribute to the error norm
|Chris Holmes (FSU)
|Obin Sturm (PSC)
|Chemistry
|Chemistry
|Simple
|Not delivered
|
|
*Slated for 14.2.0
*See [https://github.com/geoschem/geos-chem/pull/1292 geoschem/geos-chem PR #1292]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
|Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6
|Melissa Sulprizio (Harvard)
|Katherine Travis (NASA LARC)
|Emissions
|Chemistry
|Simple
|Not delivered
|
|


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx]
|Monoterpene oxdation more species & oxdiation products
|Lee Murray (Rochester)
|Kevin Bates (CU Boulder)
|Emissions
|Chemistry
|Simple
|Not delivered
|
|
*See [https://github.com/geoschem/geos-chem/pull/1628 geoschem/geos-chem PR #1628]


|-valign="top"
|-valign="top"
|Update surface methane boundary condition using NOAA flask data
|PPN photolysis
|Lee Murray (Rochester)
|Eloise Marais (University College London)
|Input data
|Chemistry
|Simple
|Not delivered
|
|


|-valign="top"
|-valign="top"
|[https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022JG006908 Methane emissions from hydropower reservoirs]
|global orgainc N dep from various emissions; nitrate aromatics updates
|Kyle Delwiche (UC Berkeley)<br>Melissa Sulprizio (Harvard)
|Tzung-May Fu (SUSTech)
|CH4 simulation
|Chemistry +<br>Deposition
|Simple
|Not delivered
|
|


|-valign="top"
|-valign="top"
|Updated loss frequencies for CH4 simulation
|adaptive chemistry (domain-specific) in WRF-GC
|Todd Mooring (Harvard)
|Tzung-May Fu (SUSTech)
|CH4 simulation
|Chemistry
|Simple
|Not delivered
|
|


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1646 Bug fix: Restore vertical allocation of CEDS energy and industry emissions]
|Alk4 from biogenic vs anthro
|Melissa Sulprizio (Harvard)
|Jared Brewer (UMN)
|Emissions
|Chemistry
|Simple
|Not delivered
|
|
*[https://github.com/geoschem/geos-chem/pull/1712 geoschem/geos-chem PR #1712]


|}
|-valign="top"
|Dry deposition to F90 (readability)
|Chris Holmes (FSU)
|Dry Deposition
|Not delivered
|


== Delivered and in the queue ==
|-valign="top"
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Joey Lam, Amos Tai (CUHK)
|Dry deposition
|Not delivered
|


Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.
|-valign="top"
|FRP-based fire emissions for eastern US at 0.2
|Chris Holmes (FSU)
|Emissions
|Not delivered
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|-bgcolor="#CCCCCC"
|China agriculture NH3 emissions
!width="200px"|Feature
|Amos Tai (CUHK)
!width="200px"|Contributor(s)
|Emissions
!width="100px"|Model scope
|Not delivered
!width="100px"|Ease of implementation
|
!width="300px"|Notes and References


|-valign="top"
|-valign="top"
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
|T-dependent anthropogenic VOCs
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
|May Fu (SUSTech)
|Emissions
|Emissions
|Simple
|Not delivered
|
|
*Delivered to GCST (Jul 2022)


|}
|-valign="top"
|Rasterized shapefiles high-resolution for oil and gas infrastructure in North America
|Lee Murray (Rochester)
|Emissions
|Not delivered
|


== Delivered but not yet prioritized ==
|-valign="top"
|New soil NOx parameterization
|Yi Wang (U. Iowa), Jun Wang (U. Iowa)
|Emissions
|Not delivered
|


Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integration into GEOS-Chem.
|-valign="top"
|New source functions for transport tracers beryllium-7 and beryllium-10
|Minjie Zheng (ETH)
|Emissions
|Not delivered
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|-bgcolor="#CCCCCC"
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
!width="200px"|Feature
|Yang Li (Baylor University), Loretta Mickley (Harvard)
!width="200px"|Contributor(s)
|Emissions
!width="100px"|Model scope
|Not delivered
!width="100px"|Ease of implementation
|
!width="300px"|Notes and References


|-valign="top"
|-valign="top"
|Geologic emission of ethane and propane
|Australian emissions
|Matthew Rowlinson and Mat Evans(York)
|Stephen MacFarlane/Jenny Fisher (UWollongong)
|Emissions
|Emissions
|Simple
|Not delivered
|
|
* Global source from https://doi.org/10.1038/s41561-018-0073-0 with spatial distribution from https://doi.org/10.5194/essd-11-1-2019


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Geogenic emissions (volcanic, rock weathering)
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
|Eric Roy (MIT)
|Science
|Emissions
|Simple
|Not delivered
|
|
*Delivered to GCST (Feb 2021)
* [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]


|-valign="top"
|-valign="top"
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Biomass burning - FINN2.5 & GFED4
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
|Eric Roy (MIT)
|Emissions
|Emissions
|Simple
|Not delivered
|
 
|-valign="top"
|BCC-GC online
|Lin Zhang (PKU)
|External Model
|Not delivered
|
 
|-valign="top"
|GC-YIBS with online fire emissions
|Xu Yue; Hong Liao; Xu Yue (NUIST)
|External Model
|Not delivered
|
 
|-valign="top"
|GISS-GC offline (GCAP)
|Lee Murray (Rochester)
|GCAP
|Not delivered
|
 
|-valign="top"
|Archived TCR-2 OH fields for carbon simulations
|Kazu Miyazaki (JPL)
|Input data
|Not delivered
|
 
|-valign="top"
|GOOPy (General Observation Operator in Python): for processing satellite and model output to produce column fields using averaging kernels
|Hannah Nesser (JPL) , Elise Penn (Harvard)
|Tools
|Not delivered
|
|
*Data files delivered to GCST (July 2021)
* Could be added into GCPy as a Git submodule
*Data are quite large - need to think about storage, compression


|}
|}


== Ready but not delivered ==
== Almost there (< 6 months) ==


Features listed in this table are ready but have not been delivered to the GEOS-Chem Support Team.
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.


{| border=1 cellspacing=0 cellpadding=5  
{|border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
|- bgcolor="#cccccc"
!width="200px"|Feature
!width="200px"|Feature
!width="200px"|Contributor(s)
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Model scope
!width="420px"|Notes and References
!width="420px"|Notes and References
|-valign="top"
|Capture all trop and PBL height changes in budget diagnostics
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Diagnostics
|
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
|-valign="top"
|Dust non-sphericity impacts on optical properties
|Inderjeet Singh (WashU)
|Aerosols
|


|-valign="top"
|-valign="top"
|Online H2 chemistry
|Fixes to stratospheric aerosol settling
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
|Connor Barker, Eloise Marais (UCL)
|Aerosols
|
 
|-valign="top"
|DMS chemistry in v14
|Linia Tashmim and Will Porter (UC Riverside)
|Chemistry
|Chemistry
|
|
* Pérez-Peña, M.P. et al., ACP, 2022.
* [https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html DOI: 10.5194/acp-22-12367-2022]


|-valign="top"
|-valign="top"
|Alk4 & R4N2 chemistry
|KPP standalone + 3D Interface
|Jared Brewer (Harvard)
|Obin Sturm (PSC)
|Chemistry
|Chemistry
|
|
* Brewer, J.F. et al., J. Geophys. Res., submitted 2022.
* [https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Click here for PDF]


|-valign="top"
|-valign="top"
|DMS Chemistry
|Load balancing in chemistry solver (GCHP)
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
|Zhouran (Jordan) Sun (WashU)
|Chemistry +<br>Performance
|
 
|-valign="top"
|UCX chemistry in mesosphere (GCHP/GCClassic)
|Helena McDonald (MIT)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Organic acids (RCOOH)
|Updated aromatic oxidation
|Katie Travis (NASA)
|Stephen MacFarlane/Jenny Fisher (University of Wollongong)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Update reactions with new JPL & IUPAC recommendations
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Kelvin Bates (Harvard)
|Laura Yang (Harvard)
|Chemistry
|Chemistry
|
|
* Currently running simulations to check magnitude of changes


|-valign="top"
|-valign="top"
|Improve carbon & nitrogen conservation in reactions
|Implement isotope simulation for CH4 in the carbon simulation
|Kelvin Bates (Harvard)
|Lee Murray (Rochester)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Blowing snow sea salt in TOMAS
|Active mesospheric chemistry
|Betty Croft (Dalhousie)
|Helena McDonald (MIT), Seb Eastham (IC)
|Aerosols
|Chemistry
|
|


|-valign="top"
|-valign="top"
|New version of CEDS at 0.1 deg
|Documentation for adding additional aerosol species
|Emma Knowland (NASA)
|Connor Barker (UCL)
|Emissions
|Documentation
|
|


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
|Column diagnostics
|Shixian Zhai (Harvard)
|Lizzie Lundgren (Harvard), Viral Shah (GMAO)
|Emissions
|Diagnostics
|
|
* Need permission from Qiang Zhang (Tsinghua U.) to distribute data


|-valign="top"
|-valign="top"
|KORUS-AQ emissions for East Asia
|TOMAS rate diagnostics -- improve performance
|Katie Travis (NASA)
|Betty Croft (WashU/Dal)
|Emissions
|Diagnostics +<br>Performance
|
|


|-valign="top"
|-valign="top"
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
|Fix obspack - not working in 14.4.0
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
|Bob Yantosca (Harvard)
|Hg simulation
|Diagnostics
|
|


|-valign="top"
|-valign="top"
|WRF-GC Hg simulation
|Archive gamma values from heterogeneous chemistry
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
|Bob Yantosca (Harvard)
|Hg simulation<br>WRF-GC
|Diagnostics
|
|


|-valign="top"
|-valign="top"
|Updated HgII gas-partical partitioning
|RRTMG Documentation
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
|GCST
|Hg simulation
|Documentation
|
|
* Should be option, not default


|-valign="top"
|-valign="top"
|Dry deposition to F90 (readability)
|Canopy Physics Model
|Chris Holmes (FSU)
|Sam Silva (MIT)
|Dry deposition
|Dry Deposition
|
|
|}


== Almost there (< 6 months) ==
|-valign="top"
|Dry deposition diagnostics by land cover
|Holly Nowell, Chris Holmes (FSU)
|Dry Deposition
|


Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
|-valign="top"
 
|Dry deposition process diagnostics
{|border=1 cellspacing=0 cellpadding=5
|Holly Nowell, Chris Holmes (FSU)
|- bgcolor="#cccccc"
|Dry Deposition
!width="200px"|Feature
|
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="420px"|Notes and References


|-valign="top"
|-valign="top"
|PPN+hv, PPN+OH
|Biomass burning for TOMAS
|Robert Ryan (UCL)
|Nicole June (CSU)
|Chemistry
|Emissions +<br>Microphysics
|
|


|-valign="top"
|-valign="top"
|MBO
|Historic biomass burning ()
|Michael Vermeuel (UMN)
|Pengfei (Gtech)
|Chemistry
|Emissions
|
|


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
|Rice methane
|Seb Eastham (MIT)
|Zichong Cheng (Harvard)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Re-binning of off-line sea salt and dust for use in TOMAS
|Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.)
|Betty Croft (Dalhousie)
|Katie Travis / Kelvin Bates
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Betty Croft (Dalhousie)
|Melissa Sulprizio (Harvard), Tia Scarpelli (Carbon MAPPER)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|ML algorithms for bulk aerosols
|New prior biospheric fluxes from CMS-FLUX and GMAO
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
|Kevin Bowman (JPL), Lesley Ott (GMAO)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
|Snowpack Br2 emission
|Shixian Zhai (Harvard)
|Chris Holmes (FSU)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Updates to Hodzic SOA scheme
|EDGAR v8.1_toxHg emissions for 1970-2022
|Jared Brewer (Harvard)
|Eric Roy (MIT)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Automated reduction in isoprene scheme
|Improve pressure handling in GCHP advection
|Dan Westervelt (Lamont-Doherty)
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
|Aerosols
|GCHP
|
|


|-valign="top"
|-valign="top"
|Brown carbon chemsitry
|Add error trap for duplicate scale factors in HEMCO
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
|Bob Yantosca (Harvard)
|Aerosols
|HEMCO
|
|


|-valign="top"
|-valign="top"
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
|Fix pressure handling in HEMCO standalone
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
|Melissa Sulprizio (Harvard)
|Convection
|HEMCO
|
|


|-valign="top"
|-valign="top"
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
|Integration testing: Add stretched grid
|Jintai Lin (PKU)
|Lizzie Lundgren (Harvard)
|Emissions
|Quality Assurance
|
|
*Horizontal resolution: 5km, temporal resolution: JJA mean
*monthly data will be available at a later stage; please contact us


|-valign="top"
|-valign="top"
|Updated biomass burning emission factors and species
|Integration testing: Add GCAP2
|Tess Carter (MIT)
|GCST
|Emissions
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Updated offline sea salt emissions
|Integration testing: Add GCHP mass flux run
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
|Lizzie Lundgren (Harvard)
|Emissions
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Integration testing: Add run with all diagnostics turned on
|Sam Silva (MIT)
|GCST
|Emissions &<br>Science
|Quality Assurance
|
|
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
*Needs to be updated to a more recent GEOS-Chem version


|-valign="top"
|-valign="top"
|Gridded EPA (GEPA) version 2 emissions for 2012-2018
|Integration testing: Reinstate TOMAS40
|Bram Maasakkers (SRON)<br>Erin McDuffie (WashU),<br>Melissa Sulprizio (Harvard)
|Betty Croft (Dalhousie/WashU)
|Emissions<br>CH4 simulation
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Assess memory leak in GCHP
|Strat-adjusted RF in GCC and GCHP
|Killian Murphy (York)
|Connor Barker, Eloise Marais (UCL)
|Model performance
|Radiation
|
|
*NOTE: Most memory leaks in GCHP have been fixed by [https://github.com/geoschem/geos-chem/pull/1353 geoschem/geos-chem PR #1353].  Need to assess if any memory leaks still remain.


|-valign="top"
|-valign="top"
|Hybrid MPI-OpenMP in GCHP
|Continue cleanup of C-preprocessor switches
|Seb Eastham (MIT)<br>Killian Murphy (York)
|Lizzie Lundgren (Harvard)
|Model performance
|Structural
|
|


|-valign="top"
|-valign="top"
|Improve run directory templating and creation with init_rd.sh and shared directories
|updates to Luo deposition scheme
|Jourdan He (WashU)
|Gan Luo
|Run directories
|Wet Deposition
|
|


|-valign="top"
|-valign="top"
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|GCST?
|Gan Luo (Albany), Fangqun Yu (Albany)
|Documentation
|Wet Deposition
|
|


Line 483: Line 597:


|-valign="top"
|-valign="top"
|Snow / Icy Bromine
|ML algorithms for bulk aerosol
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
|Arshad Nair and Fangqun Yu (SUNY Albany)
|Chemistry
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Monoterpene oxidation scheme
|Heterogeneous sulfate chemistry
|Jessica Haskins (MIT)
|Katie Travis
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Fire related VOCs including furans
|H2 as an active species
|Lu Hu (UMT)<br>Lixu Jin (UMT)
|Seb Eastham (IC)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Extension of UCX into the mesosphere
|HCN, acetonitrile as fire tracers
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
|Kevin Bates (CU Boulder)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Methane flux ingestion
|Implement ethane in carbon simulation
|Eloise Marais (UCL)
|Yuzhong Zhang (Westlake)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Parameterized effective radius
|VCPs emissions
|Haihui Zhu (WashU)
|Kelvin Bates (CU Boulder)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Dust non-sphericity impacts on surface chem and optical properties
|Mesospheric source of CO
|Inderjeet Singh (WashU)
|Dylan Jones (UofT), Pam Wales (GSFC)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Size-resolved stratospheric aerosol
|Drought-stress algorithm
|Seb Eastham (MIT)
|Wei Li (U. Houston)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Extend aerosol settling
|Physically-based resolution correction for BVOC emissions using MEGAN
|Eloise Marais (UCL)
|May Fu (SUSTech)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Stratospheric aerosol APM
|Canadian forest fire prediction system (Canada government forecast model)
|Fangqun Yu (SUNY)
|Robin (Montreal)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Plume-in-grid model
|Furan emission factors (updates existing emissions)
|Hongwei Sun (Harvard)
|Lu Hu/Lixu Jin (Montana)
|Chemistry
|Emissions
|
|


|-valign="top"
|-valign="top"
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
|Cooking emissions (not biofuel)
|Lee Murray (Rochester)
|Kelvin Bates (CU Boulder)
|Emissions
|Emissions
|
|


|-valign="top"
|-valign="top"
|Seb aircraft emissions beyond recent 2019 update
|State-specific annual emissions scaling factors (US) (1990-2021)
|Seb Eastham (MIT)
|Ishir Dutta (MIT)
|Emissions
|Emissions
|
|


|-valign="top"
|-valign="top"
|FRP-based fire emsisions for eastern US at 0.2 deg
|GISS-GC online
|Charlie Fite (FSU)
|Lee Murray (Rochester)
|External model
|
 
 
 
|-valign="top"
|Hybrid MPI-OpenMP in GCHP
|Seb Eastham (MIT); Killian Murphy (York); Lizzie Lundgren (Harvard)
|GCHP
|
 
 
|-valign="top"
|MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Wildcards in GCHP History
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Output emissions with positive up convention in GCHP
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Bob Yantosca (Harvard)
|Performance
|
 
 
 
|-valign="top"
|Photophysical oxidation of aldehydes
|Paulo Sebastianelli/Jenny Fisher (University of Wollongong)
|Chemistry
|
 
|-valign="top"
|DMS updates
|Will Porter (UCR)
|Chemistry
|
 
|-valign="top"
|Furans emission and chemistry
|Lixu Jin/Lu Hu(U Montana)
|Chemistry + <br>Emissions
|
 
|-valign="top"
|Cl2 prodcution from Fe aerosol Qianjie Chen
|(Hong Kong Poly)/Becky Alexander (UW)
|Chemistry
|
 
|-valign="top"
|VCP, cooking: tracers species added i.e., D5, ethanol affecting PAN
|Kevin Bates (CU Boulder)
|Emissions
|Emissions
|
|


|-valign="top"
|-valign="top"
|Hg iodine chemistry
|bidirectional land-atmosphere exchange for Hg
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
|Yuying Cui (MIT/Tsinghua)
|Hg simulation
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Hg simulation in GCHP
|OH covariances for inversions
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
|Elise Penn (Harvard)
|Hg simulation
|Inversions
|
 
|-valign="top"
|CESM2-GC offline
|Seb Eastham (ICL); Lee Murray (Rochester)
|Met fields
|
 
|-valign="top"
|Re-binning of off-line sea salt and dust for TOMAS
|Betty Croft (Dalhousie)
|Microphysics
|
 
|-valign="top"
|TOMAS nucleation updates
|Sam O'Donnell (CSU)
|Microphysics
|
|


|-valign="top"
|-valign="top"
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
|Stratospheric aerosol APM
|Yanxu Zhang (Nanjing U.)
|Fangqun Yu (SUNY Albany)
|Hg simulation
|Microphysics
|
|


|-valign="top"
|-valign="top"
|Dry deposition diagnostics by land cover
|Transition from MERRA-2 to GEOS-IT for benchmarking
|Holly Nowell (FSU)
|Yuanjian Zhang (WashU)
|Diagnostics
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Dry deposition process diagnostics
|Automate integration testing on AWS
|Holly Nowell (FSU)
|Yidan Tang (WashU)
|Diagnostics
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Isotope simulation for CO and CH4 in GCHP
|Integration testing: Add across end of year run
|Lee Murray (Rochester)
|GCST
|Carbon simulation
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Integration testing: Add GEOS-IT
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
|Yuanjian Zhang (WashU)
|Emissions<br>CH4 simulation
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Modularization of aerosols code for interface with GOCART in GEOS
|Separate mixing, emissions, and drydep
|Christoph Keller (GMAO)
|Yuanjian Zhang (WashU)
|Structural
|Structural
|
|


|-valign="top"
|-valign="top"
|Improve load balancing in GCHP
|Intel IFX compiler
|Seb Eastham (MIT)
|Bob Yantosca (Harvard)
|Model performance
|Structural
|
|


|-valign="top"
|-valign="top"
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
|Bob Yantosca (Harvard); Lee Murray (Rochester)
|Transport
|Structural
|
|


|-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
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
|Lizzie Lundgren (Harvard)
|Transport
|Structural
|
|


|-valign="top"
|-valign="top"
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
|Limit allocation of State_Met to what is needed per simulation
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
|Melissa Sulprizio (Harvard)
|Transport
|Structural
|
|


Line 652: Line 859:


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Modal aerosol model (MAM7) in GCHP
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Shreya Sharma (MIT)
|Emissions
|Aerosols
|
|
*See [https://github.com/geoschem/geos-chem/issues/1288 geoschem/geos-chem #1288]
*[https://github.com/geoschem/geos-chem/issues/1288#issuecomment-1255103962 NOTE: This feature has been tabled for the time being.]


|-valign="top"
|-valign="top"
|Updates to Aromatic chemistry
|Online OCIM ocean biogeochemistry
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
|Lee Murray (Rochester); Hannah Horowitz (UIUC); Chris Holmes (FSU)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Nitrate photolysis
|Perchlorate chemistry
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
|Yuk Chun Chan (UW)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|In aerosol chemistry Halogens
|Non-stomatal dry deposition (2-layer canopy model)
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
|Michael Vermeuel (Purdue)
|Dry Deposition
|
 
|-valign="top"
|Continental chloride particle emissions (salty dust, road salt)
|Jessica Haskins (Utah)
|Emissions
|
 
|-valign="top"
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
|Ruochong (Tshingua)
|Emissions
|
 
|-valign="top"
|Lightning NOx production rates
|Bex Horner (UCL)
|Emissions
|
 
|-valign="top"
|HFO and CF3CHO
|Beth Killen/Jenny Fisher (University of Wollongong)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Benchmark box model of GC Chemistry
|Glyoxal updates from isoprene
|Katie Travis (NASA)
|Tzung-May Fu (SUSTech)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Alkyl nitrates Alk7, PHAN
|Iodine chemistry
|Katie Travis (NASA)
|Becky Alexander (UW)/Xuan Wang (cityU HK)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Add stratospheric ozone species to full-chemistry simulations
|Chlorine/Perchlorate
|Lee Murray (Rochester)
|Yukchun Chan (UW)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Perchlorate chemistry
|Playa dust chemistry to improve Cl over land
|Yuk Chun Chan (UWAB)
|Jessica Haskins (Utah)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Explicit heterogeneous sulfate chemistry
|GFED5 biomass burning
|Katie Travis (NASA)<br>Becky Alexander (UT)
|Eric Roy (MIT)
|Chemistry
|Emissions
|
 
|-valign="top"
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Hg simulation
|
 
|-valign="top"
|Soil Hg emissions 2010-2020
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|ISORROPIA-lite
|Air-sea exchange parameterization
|Becky Alexander (UW)
|Eric Roy (MIT)
|Aerosols
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|HOx and ozone "emissions" from lightning as option in model to play with
|Soil Hg emissions parameterization
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
|Ari Feinberg (IQF-CSIC)
|Emissions
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Sea salt aerosol from sea ice leads
|Sea salt uptake of GOM
|Hannah Horowitz (U. Illinois)
|Eric Roy (MIT)
|Emissions
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Drought-stress algorithm
|Photoreduction rate constant
|Wei Li (U. Houston)
|Eric Roy (MIT)
|Hg simulation
|
|
|-valign="top"
|new observations (2010-2020) in standardized Hg benchmark for intercomparison
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Biomass burning injection height profiles
|Hg simulation in GCHP
|Inderjeet Singh (WashU)
|Eric Roy (MIT)
|Emissions
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|OCIM integration
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
|Hannah Horowitz (UIUC)
|Hg simulation
|
|
|-valign="top"
|possibly updating Hg oxidation chemistry based on Utah field campaigns
|Jessica Haskins (Utah)
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Updating landcover products in GEOS-Chem
|New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
|Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC)
|Input data
|Input data
|
|


|-valign="top"
|-valign="top"
|Dry deposition physical improvement
|Extend IMI to CO2 (ICI)
|Chris Holmes (FSU)
|Hannah Nesser (JPL)
|Dry deposition
|Inversions
|
 
|-valign="top"
|Global emission inventory of metals
|Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U)
|Metals simulation
|
 
|-valign="top"
|Investigate and improve performance of aerosol chemistry
|Bob Yantosca (Harvard)
|Performance
|
 
|-valign="top"
|PAH - update from version 11
|Lexia Cicone (MIT)
|POPs simulation
|
|


|-valign="top"
|-valign="top"
|TOMAS WRF-GC in regional Thailand simulation
|Species database more accessible; doc updates; TOL discussion
|Win Trivitayanurak (Chulalongkorn U)
|Jessica Haskins (Utah)
|Aerosols
|Structural
|
|


|}
|-valign="top"
|Stretched-grid plotting in GCPy
|Killian Murphy (York)
|Tools
|


|-valign="top"
|Model inter-comparison of transport (GEOS, GCHP, GCClassic)
|Lizzie Lundgren (Harvard), Emma Knowland (NASA)
|Transport
|


----------------
|-valign="top"
|Comparing mass fluxes in GCHP vs. traditional lat/lon wind
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
|Transport
|


'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
|}

Revision as of 14:19, 25 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
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions Medium
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
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry TBD Delivered
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 and 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 (UIUC) Aerosols Not delivered
P/L species should not contribute to the error norm Obin Sturm (PSC) Chemistry Not delivered
Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6 Katherine Travis (NASA LARC) Chemistry Not delivered
Monoterpene oxdation more species & oxdiation products Kevin Bates (CU Boulder) Chemistry Not delivered
PPN photolysis Eloise Marais (University College London) Chemistry Not delivered
global orgainc N dep from various emissions; nitrate aromatics updates Tzung-May Fu (SUSTech) Chemistry +
Deposition 		Not delivered
adaptive chemistry (domain-specific) in WRF-GC Tzung-May Fu (SUSTech) Chemistry Not delivered
Alk4 from biogenic vs anthro Jared Brewer (UMN) Chemistry Not delivered
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry Deposition Not delivered
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam, Amos Tai (CUHK) Dry deposition Not delivered
FRP-based fire emissions for eastern US at 0.2 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
Rasterized shapefiles high-resolution for oil and gas infrastructure in North America Lee Murray (Rochester) Emissions Not delivered
New soil NOx parameterization Yi Wang (U. Iowa), Jun Wang (U. Iowa) Emissions Not delivered
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 University), Loretta Mickley (Harvard) Emissions Not delivered
Australian emissions Stephen MacFarlane/Jenny Fisher (UWollongong) Emissions Not delivered
Geogenic emissions (volcanic, rock weathering) Eric Roy (MIT) Emissions Not delivered
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; Hong Liao; Xu Yue (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
GOOPy (General Observation Operator in Python): for processing satellite and model output to produce column fields using averaging kernels Hannah Nesser (JPL) , Elise Penn (Harvard) Tools Not delivered
  • Could be added into GCPy as a Git submodule

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, Eloise Marais (UCL) Aerosols
DMS chemistry in v14 Linia Tashmim and Will Porter (UC Riverside) Chemistry
KPP standalone + 3D Interface Obin Sturm (PSC) 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/Jenny Fisher (University of 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
Active mesospheric chemistry Helena McDonald (MIT), Seb Eastham (IC) 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, Chris Holmes (FSU) Dry Deposition
Dry deposition process diagnostics Holly Nowell, Chris Holmes (FSU) Dry Deposition
Biomass burning for TOMAS Nicole June (CSU) Emissions +
Microphysics
Historic biomass burning () Pengfei (Gtech) Emissions
Rice methane Zichong Cheng (Harvard) Emissions
Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.) Katie Travis / Kelvin Bates Emissions
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Melissa Sulprizio (Harvard), Tia Scarpelli (Carbon MAPPER) Emissions
New prior biospheric fluxes from CMS-FLUX and GMAO Kevin Bowman (JPL), Lesley Ott (GMAO) Emissions
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
Fix pressure handling in HEMCO standalone Melissa Sulprizio (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, Eloise Marais (UCL) Radiation
Continue cleanup of C-preprocessor switches Lizzie Lundgren (Harvard) Structural
updates to Luo deposition scheme Gan Luo Wet Deposition
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 and Fangqun Yu (SUNY Albany) Aerosols


Heterogeneous sulfate chemistry Katie Travis Chemistry
H2 as an active species Seb Eastham (IC) 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 (GSFC) Emissions
Drought-stress algorithm Wei Li (U. 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 (Montreal) Emissions
Furan emission factors (updates existing emissions) Lu Hu/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/Jenny Fisher (University of Wollongong) Chemistry
DMS updates Will Porter (UCR) Chemistry
Furans emission and chemistry Lixu Jin/Lu Hu(U Montana) Chemistry +
Emissions
Cl2 prodcution from Fe aerosol Qianjie Chen (Hong Kong 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/Jenny Fisher (University of Wollongong) Chemistry
Glyoxal updates from isoprene Tzung-May Fu (SUSTech) Chemistry
Iodine chemistry Becky Alexander (UW)/Xuan Wang (cityU HK) 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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