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 [http://acmg.seas.harvard.edu/geos/geos_working_groups.html Working Groups] and the [http://acmg.seas.harvard.edu/geos/geos_steering_cmte.html 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 14.0.0]]'''
|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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|-valign="top"
|-valign="top"
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation via KPP]
|New version of CEDS at 0.1 deg
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)<br>Mike Long (Harvard)
|Dandan Zhang (WashU)
|Specialty simulation
|Medium
|
*[https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
|Melissa Sulprizio (Harvard)
|Emissions
|Emissions
|Easy
|Simple
|
|
*[https://github.com/geoschem/geos-chem/pull/2171 geos-chem PR #2171]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx]
|Use USTAR read from GEOS instead of calculating from U10M and V10M
|Lee Murray (Rochester)<br>Melissa Sulprizio (Harvard)
|Yuanjian Zhang (WashU)
|Emissions
|Emissions
|Easy
|Simple
|
|
*[https://github.com/geoschem/HEMCO/pull/279 HEMCO PR #279]
*NOTE: WashU will recompute mass tuning factors for each met field & resolution (GCClassic)


|-valign="top"
|-valign="top"
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
|New carbon simulation fixes in GC-Classic and GCHP
|Hongjian Weng (PKU)
|GCST
|Emissions
|Carbon
|Easy
|Medium
|
|
*Delivered to GCST (Dec 2021)
*[https://github.com/geoschem/geos-chem/issues/2387 geos-chem issue #2387]
*[https://github.com/geoschem/GCHP/issues/431 GCHP issue #430]


|-valign="top"
|-valign="top"
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
|Fix obspack - not working in 14.4.0
|Hongjian Weng (PKU)
|Bob Yantosca (Harvard)
|Emissions
|Easy
|
*Delivered to GCST (Dec 2021)
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/discussions/1022 Add new species concentration diagnostic in units of molec/cm3]
|Haipeng Lin (Harvard)
|Diagnostics
|Diagnostics
|Easy
|Medium
|
|
*See [https://github.com/geoschem/geos-chem/pull/1264 geoschem/geos-chem PR #1264]
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/770 Output satellite diagnostics as NetCDF]
|Make GC-Classic bit-for-bit reproducible upon restart
|Eloise Marais (UCL)
|Diagnostics
|Easy
|
*See [https://github.com/geoschem/geos-chem/pull/1134 geoschem/geos-chem #1134]
 
|-valign="top"
|Upgrade Fast-JX to Cloud-J
|Lizzie Lundgren (Harvard)
|Lizzie Lundgren (Harvard)
|Structural
|GC-Classic
|Difficult
|Medium
|
* [https://github.com/geoschem/cloud-j geoschem/cloud-j]
*Ongoing
 
|-valign="top"
|Column diagnostics
|Bob Yantosca (Harvard)
|Diagnostics
|Easy
|
 
|-valign="top"
|RO2 diagnostic
|Melissa Sulprizio (Harvard)
|Diagnostics
|Easy
|
|
*[https://github.com/geoschem/HEMCO/issues/18 HEMCO issue #18]


|}
|}


== Delivered and in the queue ==
== Prioritized and in the queue ==


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


{| border=1 cellspacing=0 cellpadding=5  
{| border=1 cellspacing=0 cellpadding=5  
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!width="100px"|Model scope
!width="100px"|Model scope
!width="100px"|Ease of implementation
!width="100px"|Ease of implementation
!width="100px"|Delivery status
!width="300px"|Notes and References
!width="300px"|Notes and References


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option) / KPP 3.0.0
|Retire CH4, CO2, tagCO simulations in favor of carbon simulation
|Mike Long (Harvard) <br> Haipeng Lin (Harvard) <br> Bob Yantosca (GCST) <br> Lu Shen (PKU)
|Melissa Sulprizio (Harvard)
|Chemistry
|Carbon gases
|Difficult
|Simple
|
|
|
*In testing, publication expected in mid-to-late 2022
*[https://github.com/geoschem/geos-chem/issues/2387 geos-chem issue #2387]
*Previous literature: [https://gmd.copernicus.org/articles/15/1677/2022/ Shen et al., 2022], [https://gmd.copernicus.org/articles/13/2475/2020/ Shen et al., 2020]


|-valign="top"
|-valign="top"
|TOMAS in GCHP
|Correct the issue that injection height has been artifically decreased by HEMCO
|Betty Croft (WashU)
|Yuanjian Zhang (WashU)
|Aerosols
|Emissions
|Easy
|Simple
|See:
|Delivered June 2024
*[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"
|[https://github.com/arifein/pythonHgBenchmark Updated Hg benchmarking scripts in python]
|Ari Feinberg (MIT)
|Benchmarking
|Easy
|
|
* Ideally to be incorporated in GCPy
*[https://github.com/geoschem/geos-chem/pull/279 geos-chem PR #2358]
 
|}
 
== Delivered but not yet prioritized ==
 
Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integrating into the model.
 
{| 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="300px"|Notes and References


|-valign="top"
|-valign="top"
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
|Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
|Bob Yantosca (Harvard)
|Chemistry
|Chemistry
|Medium
|Medium
|TBD
|
|
*Delivered to GCST (Jun 2020)
* Will probably begin testing after 14.5.0 ships


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Dust non-sphericity impacts on optical properties
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
|Inderjeet Singh (WashU)
|Science
|Aerosols
|Easy
|Simple
|
|
|
*Delivered to GCST (Feb 2021)
* [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]


|-valign="top"
|-valign="top"
|Landcover/Fire Emissions Offline LPJlmfire
|Capability to run GCClassic at 0.125x0.15625 resolution
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
|Melissa Sulprizio (Harvard)<br>Xiaolin Wang (Harvard)
|Emissions
|Nested grid
|Easy
|Simple
|Delivered
|
|
*Data files delivered to GCST (July 2021)
*[https://github.com/geoschem/geos-chem/pull/1980 geos-chem PR #1980]
*[https://github.com/geoschem/HEMCO/pull/290 HEMCO PR #290]
 


|}
|}


== Ready but not delivered ==
== Ready to go in ==


Features listed in this table are ready but have not been delivered to the GEOS-Chem Support Team.
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  
{| border=1 cellspacing=0 cellpadding=5  
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!width="200px"|Contributor(s)
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Model scope
!width="300px"|Notes and References
!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 (McGill)<br>Andreas Zuend (McGill)
|Aerosols
|Not delivered
|
*[https://github.com/geoschem/geos-chem/issues/2392 geos-chem issue #2392]


|-valign="top"
|-valign="top"
|Furans / Biomass burning
|Update UCX to include gravitational settling of aerosol species beyond just BCPI
|Colette Heald (MIT)<br>Tess Carter (MIT)
|Conor Barker (UCL)<br>Eloise Marais (UCL)
|Chemistry
|Aerosols
|Not delivered
|
|


|-valign="top"
|-valign="top"
|Online H2 chemistry
|Seasalt aerosol from sea ice leads (2002-2011)
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
|Hannah Horrowitz (UIUC)
|Chemistry
|Aerosols
|Not delivered
|
|
*Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)


|-valign="top"
|-valign="top"
|Alk4 & R4N2 chemistry
|Global organic N dep from various emissions; nitrate aromatics updates
|Jared Brewer (Harvard)
|May Fu (SUSTech)
|Chemistry
|Chemistry +<br>Deposition
|Not delivered
|
|


|-valign="top"
|-valign="top"
|Organic acids (RCOOH)
|Dry deposition to F90 to improve readability
|Katie Travis (NASA)
|Chris Holmes (FSU)
|Chemistry
|Dry Deposition
|Not delivered
|
|
*[https://github.com/geoschem/geos-chem/issues/2389 geos-chem issue #2389]


|-valign="top"
|-valign="top"
|Fix C2H4 chemistry bug
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Lixu Jin (UMT)
|Joey Lam  (CUHK)<br>Amos Tai (CUHK)
|Chemistry
|Dry deposition
|Delivered<br>Feb 2021
|
|
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]


|-valign="top"
|-valign="top"
|Blowing snow sea salt in TOMAS
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
|Betty Croft (Dalhousie)
|Chris Holmes (FSU)
|Aerosols
|Emissions
|Not delivered
|
|
*[https://github.com/geoschem/geos-chem/issues/2388 geos-chem issue #2388]


|-valign="top"
|-valign="top"
|Global continental chlorine (pCl and HCl) emissions
|China agriculture NH3 emissions
|Pengfei Liu (GTech)
|Amos Tai (CUHK)
|Emissions
|Emissions
|Not delivered
|
|


|-valign="top"
|-valign="top"
|Geologic short-chain alkanes
|T-dependent anthropogenic VOCs
|Matthew R. (York)
|May Fu (SUSTech)
|Emissions
|Emissions
|Not delivered
|
|
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.


|-valign="top"
|-valign="top"
|New version of CEDS at 0.1 deg
|New source functions for transport tracers beryllium-7 and beryllium-10
|Emma Knowland (NASA)
|Minjie Zheng (ETH)
|Emissions
|Emissions
|Delivered<br>June 2024
|
|
*Available at https://zenodo.org/records/8372652


|-valign="top"
|-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)<br>Loretta Mickley (Harvard)
|Yang Li (Baylor U)<br>Loretta Mickley (Harvard)
|Emissions
|Emissions
|Delivered
|
|
*Data involves many files- need to think about temporal frequency


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
|Australian Hg emissions (2000-2019)
|Shixian Zhai (Harvard)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Emissions
|Emissions
|Not delivered
|
|
* Need permission from Qiang Zhang (Tsinghua U.) to distribute data
*[https://pubs.rsc.org/en/content/articlelanding/2022/em/d2em00019a MacFarlane et al. (2024)]
*Includes emissions from black and brown coal power plants, various metal production/processing sources (Aluminium, gold, copper, lead, etc), waste products, cement production, oil refining and petroleum, chlor alkali plants, and cremation


|-valign="top"
|-valign="top"
|KORUS-AQ emissions for East Asia
|Hg geogenic emissions (volcanic, rock weathering)
|Katie Travis (NASA)
|Eric Roy (MIT)
|Emissions
|Emissions
|Not delivered
|
|
* Need permission to distribute data
*[https://github.com/geoschem/geos-chem/issues/2361 geos-chem #2361]
*[https://gmd.copernicus.org/preprints/gmd-2024-65/ Dastoor et al. (2024)]


|-valign="top"
|-valign="top"
|[https://pubs.rsc.org/en/content/articlehtml/2022/em/d2em00032f Improvements in modelled Hg0 dry deposition to land]
|Hg biomass burning - FINN2.5 & GFED4
|Ari Feinberg (MIT)<br>Noelle Selin (MIT)<br>Thandolwethu Dlamini (MIT)<br>Martin Jiskra (UBasel)<br>Viral Shah (Harvard)
|Eric Roy (MIT)
|Hg simulation
|Emissions
|Not delivered
|
|
* The study is already published and could be incorporated into the standard model as a default. Some tweaking to the reduction rate may be required as the model halogen oxidation has also been updated in v13.4.
*[https://github.com/geoschem/geos-chem/issues/2361 geos-chem #2361]
*[https://gmd.copernicus.org/preprints/gmd-2024-65/ Dastoor et al. (2024)]


|-valign="top"
|-valign="top"
|[https://doi.org/10.34894/SZ2KOI AMAP 2015 emissions from GMA2018]
|BCC-GC online
|Helene Angot(MIT)<br>Ari Feinberg (MIT)<br>Noelle Selin (MIT)
|Lin Zhang (PKU)
|Hg simulation
|External Model
|Not delivered
|
|
* Helene Angot has gridded these for input into HEMCO and these could be uploaded from our MIT group servers to the GEOS-Chem HEMCO database.


|-valign-"top"
|-valign="top"
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
|GC-YIBS with online fire emissions
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
|Hg simulation
|External Model
|Not delivered
|
|


|-valign-"top"
|-valign="top"
|WRF-GC Hg simulation
|GISS-GC offline (GCAP)
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
|Lee Murray (Rochester)
|Hg simulation<br>WRF-GC
|GCAP
|Not delivered
|
|


|-valign="top"
|-valign="top"
|Updated HgII gas-partical partitioning
|Archived TCR-2 OH fields for carbon simulations
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
|Kazu Miyazaki (JPL)
|Hg simulation
|Input data
|Not delivered
|
|
* Should be option, not default
*This will be the default OH, but users will have the option of selecting other OH fields


|-valign="top"
|-valign="top"
|Dry deposition to F90 (readability)
|Capture all trop and PBL height changes in budget diagnostics
|Chris Holmes (FSU)
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Dry deposition
|Diagnostics
|Waiting for approval
|
|
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]


|}
|}
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!width="100px"|Model scope
!width="100px"|Model scope
!width="420px"|Notes and References
!width="420px"|Notes and References


|-valign="top"
|-valign="top"
|DMS Chemistry
|Fixes to stratospheric aerosol settling
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Chemistry
|Aerosols
|
|


|-valign="top"
|-valign="top"
|PPN+hv, PPN+OH
|DMS chemistry in v14
|Robert Ryan (UCL)
|Linia Tashmim (UCR)<br>Will Porter (UCR)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|MBO
|KPP standalone + 3D Interface
|Michael Vermeuel (UMN)
|Obin Sturm (USC)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Nitrate photolysis
|NO2+OH+H2O kinetics
|Viral Shah (NASA GMAO)
|Mat Evans (York)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
|LSODES solver in KPP for faster kinetics
|Seb Eastham (MIT)
|Haipeng Lin (Harvard)
|Science
|Chemistry
|
|
*[https://github.com/geoschem/geos-chem/issues/1094 geoschem/geos-chem #1094]


|-valign="top"
|-valign="top"
|Re-binning of off-line sea salt and dust for use in TOMAS
|Load balancing in chemistry solver (GCHP)
|Betty Croft (Dalhousie)
|Zhouran Sun (WashU)
|Aerosols
|Chemistry +<br>Performance
|
|


|-valign="top"
|-valign="top"
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
|Active chemistry in mesosphere for both GCHP and GCClassic
|Betty Croft (Dalhousie)
|Helena McDonald (MIT)<br>Sebastian Eastham (ICL)
|Aerosols
|Chemistry
|
|


|-valign="top"
|-valign="top"
|ML algorithms for bulk aerosols
|Updated aromatic oxidation
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Aerosols
|Chemistry
|
|


|-valign="top"
|-valign="top"
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Shixian Zhai (Harvard)
|Laura Yang (Harvard)
|Aerosols
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Updates to Hodzic SOA scheme
|Implement isotope simulation for CH4 in the carbon simulation
|Jared Brewer (Harvard)
|Lee Murray (Rochester)
|Aerosols
|Chemistry
|
|
*Will have to change negative emissions from soil to a first-order loss process


|-valign="top"
|-valign="top"
|Automated reduction in isoprene scheme
|Documentation for adding additional aerosol species
|Dan Westervelt (Lamont-Doherty)
|Connor Barker (UCL)
|Aerosols
|Documentation
|
|


|-valign="top"
|-valign="top"
|Brown carbon chemsitry
|Column diagnostics
|Jingqiu Mao (U. Alaska)<vr>Xuan Wang (CUHK)
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
|Aerosols
|Diagnostics
|
|


|-valign="top"
|-valign="top"
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
|TOMAS rate diagnostics -- improve performance
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
|Betty Croft (WashU/Dal)
|Convection
|Diagnostics +<br>Performance
|
|


|-valign="top"
|-valign="top"
|HTAPv3 at 0.1 deg
|Archive gamma values from heterogeneous chemistry
|Dandan Zhang (WashU)
|Bob Yantosca (Harvard)
|Emissions
|Diagnostics
|
|


|-valign="top"
|-valign="top"
|Update surface methane boundary condition using NOAA flask data
|RRTMG Documentation
|Lee Murray (Rochester)
|GCST
|Input data
|Documentation
|
|


|-valign="top"
|-valign="top"
|Provide recommended rather than hard-coded scaling factors for online emissions
|Canopy Physics Model
|Melissa Sulprizio (Harvard)
|Sam Silva (MIT)
|Emissions
|Dry Deposition
|
|
*Available at https://zenodo.org/records/3614062#.XzvrH5NKjOR (GEOS-Chem 12.3.0)


|-valign="top"
|-valign="top"
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
|Dry deposition diagnostics by land cover
|Jintai Lin (PKU)
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Emissions
|Dry Deposition
|
|


|-valign="top"
|-valign="top"
|Updated biomass burning emission factors and species
|Dry deposition process diagnostics
|Jess Haskins (Utah)
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Emissions
|Dry Deposition
|
|


|-valign="top"
|-valign="top"
|Updated offline sea salt emissions
|Biomass burning for TOMAS
|Hongjian Weng (PKU)
|Nicole June (CSU)
|Emissions
|Emissions +<br>Microphysics
|
|


|-valign="top"
|-valign="top"
|New soil NOx parameterization
|Historic biomass burning (1750-2010)
|Yi Wang (U. Iowa)<br>Jun Wang (U. owa)
|Pengfei Liu (Georgia Tech)
|Emissions
|Emissions
|
|


|-valign="top"
|-valign="top"
|HgII deposition too high in 13.4; Hg0 conc too low; should not use as is
|Rice methane emissions
|Viral Shah (NASA GMAO)<br>Yanxu Zhang (Nanjing U.)<br>Ari Feinberg (MIT)
|Zichong Cheng (Harvard)
|Hg simulation
|Emissions+<br>Carbon simulation
|
|


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Sam Silva (MIT)
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
|Emissions &<br>Science
|Emissions
|
|
*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"
|Python code for processing satellite output to produce column fields using averaging kernels
|New prior CO2 biospheric fluxes from CMS-FLUX and GMAO
|Hannah Nesser (Harvard)<br>Elise Penn (Harvard)
|Kevin Bowman (JPL)<br>Lesley Ott (GMAO)
|Post-processing
|Emissions
|
|
*GMAO can provide high-resolution  fluxes (as high as 12 km)


|-valign="top"
|-valign="top"
|Derived products from a shapefile database for oil and gas infrastructure in North America
|Snowpack Br2 emission
|Lee Murray (Rochester)
|Chris Holmes (FSU)
|Post-processing
|Emissions
|
|


|-valign="top"
|-valign="top"
|Gridded EPA (GEPA) version 2 emissions for 2012-2018
|EDGAR v8.1_toxHg emissions for 1970-2022
|Bram Maasakkers (SRON)<br>Erin McDuffie (WashU),<br>Melissa Sulprizio (Harvard)
|Eric Roy (MIT)
|Emissions<br>CH4 simulation
|Emissions
|
|


|-valign="top"
|-valign="top"
|Reduce dimension of analytical inversion
|Improve pressure handling in GCHP advection
|Hannah Nesser (Harvard)
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
|Adjoint capability
|GCHP
|
|


|-valign="top"
|-valign="top"
|Retire all BPCH diagnostics
|Add error trap for duplicate scale factors in HEMCO
|Bob Yantosca (Harvard)
|Bob Yantosca (Harvard)
|Diagnostics
|HEMCO
|
|


|-valign="top"
|-valign="top"
|GEOS-Chem in CESM 2.3
|Integration testing: Add stretched grid
|Lizzie Lundgren (Harvard)
|Lizzie Lundgren (Harvard)
|Interfacing with ESMs
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Tagged O3 simulation in GCHP
|Integration testing: Add GCHP mass flux run
|Xingpei Yu (PKU)
|Lizzie Lundgren (Harvard)
|TagO3 simulation
|Quality Assurance
|
|
*[https://github.com/geoschem/geos-chem/pull/1167 geoschem/geos-chem PR #1167]


|-valign="top"
|-valign="top"
|Assess memory leak in GCHP
|Integration testing: Reinstate TOMAS40
|Liam Bindle (WashU)<br>Killian Murphy (York)
|Betty Croft (Dalhousie/WashU)
|Model performance
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Point to internal state for species mixing ratios in GCHP and GEOS
|Strat-adjusted RF in GCC and GCHP
|Lizzie Lundgren (Harvard)<br>Christoph Keller (NASA)
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Structural
|Radiation
|
|


|-valign="top"
|-valign="top"
|Assess precision in GCHP internal state - use R4 for some?
|Continue cleanup of C-preprocessor switches
|Lizzie Lundgren (Harvard)
|Lizzie Lundgren (Harvard)
|Structural
|Structural
Line 529: Line 504:


|-valign="top"
|-valign="top"
|Hybrid MPI-OpenMP in GCHP
|Updates to Luo deposition scheme
|Seb Eastham (MIT)<br>Killian Murphy (York)
|Gan Luo (Albany)
|Model performance
|Wet Deposition
|
|
*New version, keep as switch (not default)


|-valign="top"
|-valign="top"
|Convert HEMCO input files to YAML
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Melissa Sulprizio (Harvard)
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
|Structural
|Wet Deposition
|
 
|-valign="top"
|Allow easy disabling of HEMCO emissions for testing
|Melissa Sulprizio (Harvard)
|Structural
|
 
|-valign="top"
|Improve run directory templating and creation with init_rd.sh and shared directories
|Liam Bindle (WashU)
|Run directories
|
 
|-valign="top"
|Expand SpeciesConc diagnostic unit options and rename
|Melissa Sulprizio (Harvard)
|Diagnostics
|
 
|-valign="top"
|Incorporate tools for generating input files for Fast-J/Cloud-J and planeflight
|Jared Brewer (Harvard)
|Post-processing
|
 
|-valign="top"
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
|GCST?
|Documentation
|
|


Line 584: Line 530:


|-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 (Albany)<br>Fangqun Yu (Albany)
|Chemistry
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Monoterpene oxidation scheme
|Heterogeneous sulfate chemistry
|Jessica Haskins (MIT)
|Katie Travis (NASA)
|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 (ICL)
|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
|Mesospheric source of CO
|Haihui Zhu (WashU)
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Dust non-sphericity impacts on surface chem and optical properties
|Drought-stress algorithm
|Inderjeet Singh (WashU)
|Wei Li (Houston)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Size-resolved stratospheric aerosol
|Physically-based resolution correction for BVOC emissions using MEGAN
|Seb Eastham (MIT)
|May Fu (SUSTech)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Extend aerosol settling
|Canadian forest fire prediction system (Canada government forecast model)
|Eloise Marais (UCL)
|Robin Stevens (Montreal)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Stratospheric aerosol APM
|Cooking emissions (not biofuel)
|Fangqun Yu (SUNY)
|Kelvin Bates (CU Boulder)
|Aerosols
|Emissions
|
|


|-valign="top"
|-valign="top"
|Plume-in-grid model
|State-specific annual emissions scaling factors (US) (1990-2021)
|Hongwei Sun (Harvard)
|Ishir Dutta (MIT)
|Chemistry
|Emissions
|
|


|-valign="top"
|-valign="top"
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
|GISS-GC online
|Lee Murray (Rochester)
|Lee Murray (Rochester)
|Emissions
|External model
|
 
|-valign="top"
|Hybrid MPI-OpenMP in GCHP
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>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"
|-valign="top"
|Seb aircraft emissions beyond recent 2019 update
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Seb Eastham (MIT)
|Bob Yantosca (Harvard)
|Emissions
|Performance
|
|


|-valign="top"
|-valign="top"
|FRP-based fire emsisions for eastern US at 0.2 deg
|Photophysical oxidation of aldehydes
|Charlie Fite (FSU)
|Paulo Sebastianelli (Wollongong)<br>Jenny Fisher (Wollongong)
|Emissions
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Hg iodine chemistry
|DMS updates
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
|Will Porter (UCR)
|Hg simulation
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Hg simulation in GCHP
|Furans emission and chemistry
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
|Lixu Jin (Montana)<br>Lu Hu (Montana)
|Hg simulation
|Chemistry + <br>Emissions
|
|


|-valign="top"
|-valign="top"
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
|Cl2 prodcution from Fe aerosol
|Yanxu Zhang (Nanjing U.)
|Qianjie Chen (HK Poly)<br>Becky Alexander (UW)
|Hg simulation
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Dry deposition diagnostics by land cover
|VCP emissions
|Holly Nowell (FSU)
|Kevin Bates (CU Boulder)
|Diagnostics
|Emissions
|
|


|-valign="top"
|-valign="top"
|Dry deposition process diagnostics
|Bidirectional land-atmosphere exchange for Hg
|Holly Nowell (FSU)
|Yuying Cui (MIT/Tsinghua)
|Diagnostics
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Isotope simulation for CO and CH4 in GCHP
|OH covariances for inversions
|Lee Murray (Rochester)
|Elise Penn (Harvard)
|Carbon simulation
|Inversions
|
|


|-valign="top"
|-valign="top"
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|CESM2-GC offline
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
|Seb Eastham (ICL)<br>Lee Murray (Rochester)
|Emissions<br>CH4 simulation
|Met fields
|
|


|-valign="top"
|-valign="top"
|CHEEREIO EnKF
|Re-binning of off-line sea salt and dust for TOMAS
|Drew Pendergrass (Harvard)
|Betty Croft (Dalhousie)
|Adjoint capabilities
|Microphysics
|
|


|-valign="top"
|-valign="top"
|Separate mixing and emissions
|TOMAS nucleation updates
|Bob Yantosca (Harvard)
|Sam O'Donnell (CSU)
|Structural
|Microphysics
|
|


|-valign="top"
|-valign="top"
|Modularization of aerosols code for interface with GOCART in GEOS
|Stratospheric aerosol APM
|Christoph Keller (GMAO)
|Fangqun Yu (SUNY Albany)
|Structural
|Microphysics
|
|


|-valign="top"
|-valign="top"
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|Transition from MERRA-2 to GEOS-IT for benchmarking
|Bob Yantosca (Harvard)
|Yuanjian Zhang (WashU)
|Structural
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Improve load balancing in GCHP
|Automate integration testing on AWS
|Seb Eastham (MIT)
|Yidan Tang (WashU)
|Model performance
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Update to MAPL 3 in GCHP, including replacement of ExtData.rc with YAML file
|Integration testing: Add across end of year run
|Lizzie Lundgren (Harvard)
|GCST
|Structural
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Integration testing: Add GEOS-IT
|Bob Yantosca (Harvard)
|Yuanjian Zhang (WashU)
|Model performance
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Limit allocation of State_Met to what is needed per simulation
|Separate mixing, emissions, and drydep
|Melissa Sulprizio (Harvard)
|Yuanjian Zhang (WashU)
|Structural
|Structural
|
|


|-valign="top"
|-valign="top"
|Make frequency of HEMCO restart file configurable
|Intel IFX compiler
|Melissa Sulprizio (Harvard)
|Bob Yantosca (Harvard)
|Diagnostics
|Structural
|
|


|-valign="top"
|-valign="top"
|Apply masks/scaling in HEMCO based on input category or flag
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
|Melissa Sulprizio (Harvard)
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
|Structural
|Structural
|
|


|-valign="top"
|-valign="top"
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
|Lizzie Lundgren (Harvard)
|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
|Limit allocation of State_Met to what is needed per simulation
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
|Melissa Sulprizio (Harvard)
|Transport
|Structural
|
|


|-valign="top"
|-valign="top"
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
|Using 3-D precipitation fluxes to calculate precipitation formation and re-evaporation in scavenging (to be consistent with GEOS/GOCART & ground precipitation)
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
|Gan Luo (Albany)<br>Hongyu Liu (NIA/LaRC)<br>Bo Zhang (NIA/LaRC)
|Transport
|Wet deposition
|
|


Line 801: Line 777:


|-valign="top"
|-valign="top"
|Updates to Aromatic chemistry
|Modal aerosol model (MAM7) in GCHP
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
|Shreya Sharma (MIT)
|Aerosols
|
 
|-valign="top"
|Online OCIM ocean biogeochemistry
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>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 (Wollongong)<br>Jenny Fisher (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)<br>Xuan Wang (CUHK)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Add stratospheric ozone species to full-chemistry simulations
|GFED5 biomass burning
|Lee Murray (Rochester)
|Eric Roy (MIT)
|Chemistry
|Emissions
|
|


|-valign="top"
|-valign="top"
|Perchlorate chemistry
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|Yuk Chun Chan (UWAB)
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Chemistry
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Explicit heterogeneous sulfate chemistry
|Soil Hg emissions 2010-2020
|Katie Travis (NASA)<br>Becky Alexander (UT)
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Chemistry
|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"
|-valign="top"
|Extend the IMI system to other trace gases
|PAH - update from version 11
|Lucas Estrada (Harvard)
|Lexia Cicone (MIT)
|Adjoint capabilities
|POPs simulation
|
|


|-valign="top"
|Species database more accessible; doc updates; TOL discussion
|Jessica Haskins (Utah)
|Structural
|


|-valign="top"
|-valign="top"
|TOMAS WRF-GC in regional Thailand simulation
|Stretched-grid plotting in GCPy
|Win Trivitayanurak (Chulalongkorn U)
|Killian Murphy (York)
|Aerosols
|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 22:27, 27 September 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 version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple
Use USTAR read from GEOS instead of calculating from U10M and V10M Yuanjian Zhang (WashU) Emissions Simple
  • HEMCO PR #279
  • NOTE: WashU will recompute mass tuning factors for each met field & resolution (GCClassic)
New carbon simulation fixes in GC-Classic and GCHP GCST Carbon Medium
Fix obspack - not working in 14.4.0 Bob Yantosca (Harvard) Diagnostics Medium
Make GC-Classic bit-for-bit reproducible upon restart Lizzie Lundgren (Harvard) GC-Classic 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
Retire CH4, CO2, tagCO simulations in favor of carbon simulation Melissa Sulprizio (Harvard) Carbon gases Simple
Correct the issue that injection height has been artifically decreased by HEMCO Yuanjian Zhang (WashU) Emissions Simple Delivered June 2024
Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver Bob Yantosca (Harvard) Chemistry Medium TBD
  • Will probably begin testing after 14.5.0 ships
Dust non-sphericity impacts on optical properties Inderjeet Singh (WashU) Aerosols Simple
Capability to run GCClassic at 0.125x0.15625 resolution Melissa Sulprizio (Harvard)
Xiaolin Wang (Harvard) 		Nested grid Simple Delivered


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
Update UCX to include gravitational settling of aerosol species beyond just BCPI Conor Barker (UCL)
Eloise Marais (UCL) 		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)
Global organic N dep from various emissions; nitrate aromatics updates May Fu (SUSTech) Chemistry +
Deposition 		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 Delivered
June 2024
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 Hg emissions (2000-2019) Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Emissions Not delivered
  • MacFarlane et al. (2024)
  • Includes emissions from black and brown coal power plants, various metal production/processing sources (Aluminium, gold, copper, lead, etc), waste products, cement production, oil refining and petroleum, chlor alkali plants, and cremation
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
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics Waiting for approval

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
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
NO2+OH+H2O kinetics Mat Evans (York) Chemistry
LSODES solver in KPP for faster kinetics Haipeng Lin (Harvard) Chemistry
Load balancing in chemistry solver (GCHP) Zhouran Sun (WashU) Chemistry +
Performance
Active chemistry in mesosphere for both GCHP and GCClassic Helena McDonald (MIT)
Sebastian Eastham (ICL) 		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
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
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 Liu (Georgia Tech) Emissions
Rice methane emissions Zichong Cheng (Harvard) Emissions+
Carbon simulation
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 GCHP mass flux run Lizzie Lundgren (Harvard) 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
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
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 emissions 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
Using 3-D precipitation fluxes to calculate precipitation formation and re-evaporation in scavenging (to be consistent with GEOS/GOCART & ground precipitation) Gan Luo (Albany)
Hongyu Liu (NIA/LaRC)
Bo Zhang (NIA/LaRC) 		Wet deposition

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
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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