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"|Minor 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 13.4.0]]'''
|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="100px"|Model scope
!width="100px"|Model scope
!width="100px"|Ease of implementation
!width="100px"|Ease of implementation
!width="300px"|Notes
!width="300px"|Notes and References


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/997 Update surface resistance for ozone deposition to ice/snow]
|New version of CEDS at 0.1 deg
|Ryan Pound (York)<br>Shuting Zhai (UW)
|Dandan Zhang (WashU)
|Drydep
|Emissions
|Easy
|Simple
|
|
*See [https://github.com/geoschem/geos-chem/issues/997 geoschem/geos-chem PR #997]
*[https://github.com/geoschem/geos-chem/pull/2171 geos-chem PR #2171]


|-valign="top"
|-valign="top"
|Updated Global Inventory of Methane Emissions from Oil/Gas/Coal (GFEI v2)
|Use USTAR read from GEOS instead of calculating from U10M and V10M
|Tia Scarpelli (U. Edinburgh)
|Yuanjian Zhang (WashU)
|Emissions
|Emissions
|Easy
|Simple
|
|
*[https://github.com/geoschem/geos-chem/issues/1043 geoschem/geos-chem #1043]
*[https://github.com/geoschem/HEMCO/pull/279 HEMCO PR #279]
*Reference: Scarpelli, T.R., D.J. Jacob, S. Grossman, X. Lu, Z. Qu, M.P. Sulprizio, Y. Zhang, F. Reuland, and D. Gordon, [https://acmg.seas.harvard.edu/files/acmg/files/scarpelli2021_gfei.pdf Updated Global Fuel Exploitation Inventory (GFEI) for methane emissions from the oil, gas, and coal sectors: evaluation with inversions of atmospheric methane observations], submitted to Atmos. Chem. Phys., 2021
*NOTE: WashU will recompute mass tuning factors for each met field & resolution (GCClassic)


|-valign="top"
|-valign="top"
|Upgrade Fast-JX to Cloud-J
|Ongoing carbon simulation fixes in GCClassic and GCHP
|Lizzie Lundgren (GCST)
|GCST
|Structural
|Carbon simulation
|Difficult
|Medium
|
*See [https://github.com/geoschem/cloud-j geoschem/cloud-j]
 
|-valign="top"
|Migrating sulfate chemistry into KPP
|Mike Long (GCST)
|Chemistry &<br>Structural
|Difficult
|
|
*Complete but needs validation & further testing
*[https://github.com/geoschem/GCHP/issues/440 GCHP issue #440]
*[https://github.com/geoschem/geos-chem/issues/2463 geos-chem issue #2463]
*[https://github.com/geoschem/geos-chem/pull/2510 geos-chem PR #2510]


|-valign="top"
|-valign="top"
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry in KPP]
|Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)<br>Mike Long (Harvard)
|Bob Yantosca (Harvard)
|Chemistry
|Chemistry
|Medium
|Medium
|
|
*In testing
*[https://github.com/geoschem/geos-chem/pull/2482 geos-chem PR #2482]
*[https://github.com/geoschem/geos-chem/pull/2483 geos-chem PR #2483]


|-valign="top"
|-valign="top"
|Add capability to use mass fluxes in advection
|Fix obspack - not working in 14.4.0
|Sebastian Eastham (MIT) <br> Liam Bindle (GCST)
|Bob Yantosca (Harvard)
|Transport
|Diagnostics
|Easy
|Medium
|
|
*Identified as a priority for GC 13, but not yet delivered
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]
*GCHP only
 


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
|Make GC-Classic bit-for-bit reproducible upon restart<br>(part 1 of 2)
|Melissa Sulprizio (GCST)
|Lizzie Lundgren (Harvard)
|Emissions
|GC-Classic
|Easy
|Medium
|
|
*[https://github.com/geoschem/geos-chem/pull/2521 geos-chem PR #2521]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx], [https://github.com/geoschem/geos-chem/issues/331 biomass burning], and [https://github.com/geoschem/geos-chem/issues/656 volcanoes]
|Capture all trop and PBL height changes in budget diagnostics
|Lee Murray (Rochester)<br>Melissa Sulprizio (GCST)
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Emissions
|Diagnostics
|Easy
|Medium
|
|
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/945 Add option for driving GEOS-Chem with native GEOS meteorological files]
|Derive convective precipitation flux if using FP/IT generated with Grell-Freitas
|Liam Bindle (GCST)
|Yuanjian Zhang (WashU)<br>Viral Shah (GMAO)<br>Lizzie Lundgren (Harvard)
|Structural
|Convection
|Easy
|Medium
|
|
*[https://github.com/geoschem/geos-chem/issues/2469 geos-chem Issue #2469]
*[https://github.com/geoschem/geos-chem/pull/2523 geos-chem PR #2523]


|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/990 Change State_Chm%Species from 4D to vector of 3D arrays]
|Lizzie Lundgren (GCST)
|Structural
|Medium
|
*Ongoing
|}
|}


== Feature integration 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="300px"|Notes
!width="100px"|Delivery status
!width="300px"|Notes and References
 
|-valign="top"
|Retire CH4, CO2, tagCO simulations in favor of carbon simulation
|Melissa Sulprizio (Harvard)
|Carbon gases
|Simple
|
|
*[https://github.com/geoschem/geos-chem/issues/2387 geos-chem issue #2387]


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
|Correct the issue that injection height has been artificially decreased by HEMCO
|Sam Silva (MIT)
|Lixu Jun (Montana)
|Emissions
|Emissions
|Medium
|Simple
|Delivered<br>June 2024
|
|
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR
*[https://github.com/geoschem/geos-chem/issues/2330 geos-chem issue #2330]
*Base code version is 12.3.0
*[https://github.com/geoschem/geos-chem/pull/2358 geos-chem PR #2358]


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Capability to run GCClassic at 0.125x0.15625 resolution
|Sam Silva (MIT)
|Melissa Sulprizio (Harvard)<br>Xiaolin Wang (Harvard)
|Science
|Nested grid
|Medium
|Simple
|Delivered
|
|
*Code is available at https://zenodo.org/record/3614062
*[https://github.com/geoschem/geos-chem/pull/1980 geos-chem PR #1980]
*Base code version is 12.3.0
*[https://github.com/geoschem/HEMCO/pull/290 HEMCO PR #290]


|-valign="top"
|-valign="top"
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
|Strat-adjusted RF in GCC and GCHP
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Specialty simulation
|Radiation
|Medium
|Simple
|Delivered
|
|
*See [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
*[https://github.com/geoschem/geos-chem/pull/2525 geos-chem PR #2525]
*Ideally implemented as a chemical mechanism in KPP


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
|Archived TCR-2 OH fields for carbon simulations
|Mike Long (Harvard) <br> Haipeng Lin (Harvard)  
|Kazu Miyazaki (JPL)<br>Melissa Sulprizio (Harvard)
|Chemistry
|Input data
|Difficult
|Simple
|Data delivered<br>Oct 2024
|
|
*In testing
*This will be the default OH, but users will have the option of selecting other OH fields
*[https://github.com/geoschem/geos-chem/issues/2537 geos-chem issue #2537]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/770 Output satellite diagnostics as NetCDF]
|Dust non-sphericity impacts on optical properties
|Eloise Marais (UCL)  
|Inderjeet Singh (WashU)
|Diagnostics
|Aerosols
|Easy
|Medium
|Not yet delivered
|
|


|}
|}


== Feature integration not yet prioritized ==
== Ready to go in ==


Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integrating into the model.
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="100px"|Ease of implementation
!width="100px"|Delivery status
!width="300px"|Notes
!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"
|Update UCX to include gravitational settling of aerosol species beyond just BCPI
|Conor Barker (UCL)<br>Eloise Marais (UCL)
|Aerosols
|Not delivered
|
 
|-valign="top"
|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)
 
|-valign="top"
|Global organic N dep from various emissions; nitrate aromatics updates
|May Fu (SUSTech)
|Chemistry +<br>Deposition
|Not delivered
|
 
|-valign="top"
|Dry deposition to F90 to improve readability
|Chris Holmes (FSU)
|Dry Deposition
|Not delivered
|
*[https://github.com/geoschem/geos-chem/issues/2389 geos-chem issue #2389]
 
|-valign="top"
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Joey Lam  (CUHK)<br>Amos Tai (CUHK)
|Dry deposition
|Delivered<br>Feb 2021
|
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
 
|-valign="top"
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
|Chris Holmes (FSU)
|Emissions
|Not delivered
|
*[https://github.com/geoschem/geos-chem/issues/2388 geos-chem issue #2388]
 
|-valign="top"
|China agriculture NH3 emissions
|Amos Tai (CUHK)
|Emissions
|Not delivered
|


|-valign="top"
|-valign="top"
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
|T-dependent anthropogenic VOCs
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
|May Fu (SUSTech)
|Chemistry
|Emissions
|Medium
|Not delivered
|
|
*Delivered to GCST (Jun 2020)
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/1137/2020/ GC-YIBs biosphere-atmospheric chemistry coupled model]
|New source functions for transport tracers beryllium-7 and beryllium-10
|Xu Yue (NUIST)
|Minjie Zheng (ETH)
|Science
|Emissions
|Easy
|Delivered<br>June 2024
|
|
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
*Available at https://zenodo.org/records/8372652


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
|Yang Li (Baylor U)<br>Loretta Mickley (Harvard)
|Science
|Emissions
|Easy
|Delivered
|
|
*Delivered to GCST (Feb 2021)
*Data involves many files- need to think about temporal frequency
*See [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]


|-valign="top"
|-valign="top"
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
|Australian Hg emissions (2000-2019)
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|Emissions
|Easy
|Not delivered
|
|
*[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"
|Landcover/Fire Emissions Offline LPJlmfire
|Hg geogenic emissions (volcanic, rock weathering)
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
|Eric Roy (MIT)
|Emissions
|Emissions
|Easy
|Not delivered
|
|
*Data files delivered to GCST (July 2021)
*[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"
|Anthropogenic Methane Emission Inventory for Canada
|Hg biomass burning - FINN2.5 & GFED4
|Tia Scarpelli (U. Edinburgh)
|Eric Roy (MIT)
|Emissions
|Emissions
|Easy
|Not delivered
|
*[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"
|BCC-GC online
|Lin Zhang (PKU)
|External Model
|Not delivered
|
 
|-valign="top"
|GC-YIBS with online fire emissions
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
|External Model
|Not delivered
|
 
|-valign="top"
|GISS-GC offline (GCAP)
|Lee Murray (Rochester)
|GCAP
|Not delivered
|
|
*Scarpelli, T.R., D.J. Jacob, M. Moran, F. Reuland, and D. Gordon, [https://projects.iq.harvard.edu/acmg/publications/gridded-inventory-canadas-anthropogenic-methane-emissions A gridded inventory of Canada's anthropogenic methane emissions], submitted to Environ. Res. Lett., 2021.


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


{| 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
!width="420px"|Notes and References


|-valign="top"
|Fixes to stratospheric aerosol settling
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Aerosols
|
|-valign="top"
|DMS chemistry in v14
|Linia Tashmim (UCR)<br>Will Porter (UCR)
|Chemistry
|
|-valign="top"
|KPP standalone + 3D Interface
|Obin Sturm (USC)
|Chemistry
|
|-valign="top"
|NO2+OH+H2O kinetics
|Mat Evans (York)
|Chemistry
|
|-valign="top"
|LSODES solver in KPP for faster kinetics
|Haipeng Lin (Harvard)
|Chemistry
|
|-valign="top"
|Load balancing in chemistry solver (GCHP)
|Zhouran Sun (WashU)
|Chemistry +<br>Performance
|
|-valign="top"
|Active chemistry in mesosphere for both GCHP and GCClassic
|Helena McDonald (MIT)<br>Sebastian Eastham (ICL)
|Chemistry
|
|-valign="top"
|Updated aromatic oxidation
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
|-valign="top"
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Laura Yang (Harvard)
|Chemistry
|


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
|Implement isotope simulation for CH4 in the carbon simulation
|Chris Holmes (FSU)
|Lee Murray (Rochester)
|Chemistry
|Chemistry
|
|
*Identified as a priority for GC 13, but not yet delivered
*Will have to change negative emissions from soil to a first-order loss process
 
|-valign="top"
|Documentation for adding additional aerosol species
|Connor Barker (UCL)
|Documentation
|
 
|-valign="top"
|Column diagnostics
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
|Diagnostics
|
 
|-valign="top"
|TOMAS rate diagnostics -- improve performance
|Betty Croft (WashU/Dal)
|Diagnostics +<br>Performance
|
 
|-valign="top"
|Archive gamma values from heterogeneous chemistry
|Bob Yantosca (Harvard)
|Diagnostics
|
 
|-valign="top"
|RRTMG Documentation
|GCST
|Documentation
|


|-valign="top"
|Canopy Physics Model
|Sam Silva (MIT)
|Dry Deposition
|
*Available at https://zenodo.org/records/3614062#.XzvrH5NKjOR (GEOS-Chem 12.3.0)


|-valign="top"
|-valign="top"
|[https://iopscience.iop.org/article/10.1088/1748-9326/ac16a3 New soil NOx parameterization]
|Dry deposition diagnostics by land cover
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Dry Deposition
|
 
|-valign="top"
|Dry deposition process diagnostics
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Dry Deposition
|
 
|-valign="top"
|Biomass burning for TOMAS
|Nicole June (CSU)
|Emissions +<br>Microphysics
|
 
|-valign="top"
|Historic biomass burning (1750-2010)
|Pengfei Liu (Georgia Tech)
|Emissions
|Emissions
|
|


|-valign="top"
|-valign="top"
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
|Rice methane emissions
|Hongjian Weng (PKU)
|Zichong Cheng (Harvard)
|Emissions
|Emissions+<br>Carbon simulation
|
|
*Identified as a priority for GC 13, but not yet delivered


|-valign="top"
|-valign="top"
|[[Grid-independent_emissions|Updated offline sea salt emissions]]
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Hongjian Weng (PKU)
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
|Emissions
|Emissions
|
|
*Identified as a priority for GC 13, but not yet delivered


|-valign="top"
|-valign="top"
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
|New prior CO2 biospheric fluxes from CMS-FLUX and GMAO
|Hongjian Weng (PKU)
|Kevin Bowman (JPL)<br>Lesley Ott (GMAO)
|Emissions
|Emissions
|
|
*Identified as a priority for GC 13, but not yet delivered
*GMAO can provide high-resolution  fluxes (as high as 12 km)


|-valign="top"
|-valign="top"
|Provide recommended rather than hard-coded scaling factors for online emissions
|Snowpack Br2 emission
|GCST
|Chris Holmes (FSU)
|Emissions
|Emissions
|
|
*Identified as a priority for GC 13, but not yet developed


|-valign="top"
|-valign="top"
|Diagnostic to archive XCO2, XCO, and XCH4
|EDGAR v8.1_toxHg emissions for 1970-2022
|Dylan Jones (Toronto)
|Eric Roy (MIT)
|Diagnostic
|Emissions
|
|


|-valign="top"
|-valign="top"
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
|Improve pressure handling in GCHP advection
|Kazu Miyazaki (JPL)
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
|Input data
|GCHP
|
|


|-valign="top"
|-valign="top"
|BrC aging
|Add error trap for duplicate scale factors in HEMCO
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
|Bob Yantosca (Harvard)
|Chemistry
|HEMCO
|
|


|-valign="top"
|-valign="top"
|Shared Socioeconomic Pathways Emission Inventories
|Integration testing: Add stretched grid
|Hong Liao (NUIST)
|Lizzie Lundgren (Harvard)
|Emissions
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Rediagnosis of RAS convection in GEOS-Chem
|Integration testing: Add GCHP mass flux run
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
|Lizzie Lundgren (Harvard)
|Convection
|Quality Assurance
|
|
*Work is finished and a manuscript is in preparation.


|-valign="top"
|-valign="top"
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
|Integration testing: Reinstate TOMAS40
|Sebastian Eastham (MIT) <br> Liam Bindle (GCST)
|Betty Croft (Dalhousie/WashU)
|Transport
|Quality Assurance
|
|
*Identified as a priority for GC 13, but not yet delivered
*GCHP only


|-valign="top"
|-valign="top"
|HTAPv3 emissions (0.1 deg, 2002-2018)
|Continue cleanup of C-preprocessor switches
|Emissions & Deposition WG
|Lizzie Lundgren (Harvard)
|Emissions
|Structural
|
|


|-valign="top"
|-valign="top"
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|Updates to Luo deposition scheme
|GCST
|Gan Luo (Albany)
|Chemistry
|Wet Deposition
|
|
*New version, keep as switch (not default)


|-valign="top"
|-valign="top"
|Updated parameterization of aerosol size distribution for bulk aerosol simulations
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Haihui Zhu (WashU)<br>Shixian Zhai (Harvard)
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
|Aerosols
|Wet Deposition
|
|


Line 356: Line 542:
!width="200px"|Contributor(s)
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Model scope
!width="420px"|Notes
!width="420px"|Notes and References
 
|-valign="top"
|ML algorithms for bulk aerosol
|Arshad Nair (Albany)<br>Fangqun Yu (Albany)
|Aerosols
|
 
|-valign="top"
|Heterogeneous sulfate chemistry
|Katie Travis (NASA)
|Chemistry
|
 
|-valign="top"
|H2 as an active species
|Seb Eastham (ICL)
|Chemistry
|
 
|-valign="top"
|HCN, acetonitrile as fire tracers
|Kevin Bates (CU Boulder)
|Chemistry
|


|-valign="top"
|-valign="top"
|Methylethylketone chemistry
|Implement ethane in carbon simulation
|Jared Brewer (CSU)
|Yuzhong Zhang (Westlake)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Add sulfate dependence to SOA yield from isoprene in simple SOA
|Mesospheric source of CO
|Eloise Marais (UCL)
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
|Emissions
|
 
|-valign="top"
|Drought-stress algorithm
|Wei Li (Houston)
|Emissions
|
 
|-valign="top"
|Physically-based resolution correction for BVOC emissions using MEGAN
|May Fu (SUSTech)
|Emissions
|
 
|-valign="top"
|Canadian forest fire prediction system (Canada government forecast model)
|Robin Stevens (Montreal)
|Emissions
|
 
|-valign="top"
|Cooking emissions (not biofuel)
|Kelvin Bates (CU Boulder)
|Emissions
|
 
|-valign="top"
|State-specific annual emissions scaling factors (US) (1990-2021)
|Ishir Dutta (MIT)
|Emissions
|
 
|-valign="top"
|GISS-GC online
|Lee Murray (Rochester)
|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"
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Bob Yantosca (Harvard)
|Performance
|
 
|-valign="top"
|Photophysical oxidation of aldehydes
|Paulo Sebastianelli (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
 
|-valign="top"
|DMS updates
|Will Porter (UCR)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|GTMM updates
|Furans emission and chemistry
|Ben Geyman (Harvard)
|Lixu Jin (Montana)<br>Lu Hu (Montana)
|Chemistry + <br>Emissions
|
 
|-valign="top"
|Cl2 prodcution from Fe aerosol
|Qianjie Chen (HK Poly)<br>Becky Alexander (UW)
|Chemistry
|
 
|-valign="top"
|VCP emissions
|Kevin Bates (CU Boulder)
|Emissions
|
 
|-valign="top"
|Bidirectional land-atmosphere exchange for Hg
|Yuying Cui (MIT/Tsinghua)
|Hg simulation
|Hg simulation
|
|


|-valign="top"
|OH covariances for inversions
|Elise Penn (Harvard)
|Inversions
|
|-valign="top"
|CESM2-GC offline
|Seb Eastham (ICL)<br>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"
|Stratospheric aerosol APM
|Fangqun Yu (SUNY Albany)
|Microphysics
|
|-valign="top"
|Transition from MERRA-2 to GEOS-IT for benchmarking
|Yuanjian Zhang (WashU)
|Quality Assurance
|


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
|Automate integration testing on AWS
|Christoph Keller (NASA GMAO)
|Yidan Tang (WashU)
|Transport Tracer simulation
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Streamlining of specialty simulations through HEMCO and KPP
|Integration testing: Add across end of year run
|GCST
|GCST
|Chemistry, Specialty simulations
|Quality Assurance
|
 
|-valign="top"
|Integration testing: Add GEOS-IT
|Yuanjian Zhang (WashU)
|Quality Assurance
|
 
|-valign="top"
|Separate mixing, emissions, and drydep
|Yuanjian Zhang (WashU)
|Structural
|
 
|-valign="top"
|Intel IFX compiler
|Bob Yantosca (Harvard)
|Structural
|
 
|-valign="top"
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
|Structural
|
 
|-valign="top"
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
|Lizzie Lundgren (Harvard)
|Structural
|
 
|-valign="top"
|Limit allocation of State_Met to what is needed per simulation
|Melissa Sulprizio (Harvard)
|Structural
|
 
|-valign="top"
|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)<br>Hongyu Liu (NIA/LaRC)<br>Bo Zhang (NIA/LaRC)
|Wet deposition
|
|


Line 394: Line 783:


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.
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.
{| border=1 cellspacing=0 cellpadding=5
{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
|- bgcolor="#cccccc"
Line 399: Line 789:
!width="200px"|Contributor(s)
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Model scope
!width="420px"|Notes
!width="420px"|Notes and References


|-valign="top"
|-valign="top"
|Implement isotope simulation for CO and CH4 in GCHP
|Modal aerosol model (MAM7) in GCHP
|Lee Murray (Rochester)
|Shreya Sharma (MIT)
|Specialty simulation
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Migrate LETFK DA scheme to GCHP
|Online OCIM ocean biogeochemistry
|Kazu Miyazaki (JPL)
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
|Structural
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Super fast chemistry scheme
|Perchlorate chemistry
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
|Yuk Chun Chan (UW)
|Chemistry
|Chemistry
|
|
*SF mechanism has been implemented and benchmarked in GEOS-Chem 12.0.0. This mechanism is of interest for those groups wanting fast global simulation of oxidation fields in GEOS-Chem simulations focused on aerosol microphysics.
*The machine-learned chemical solver is still probably 12 months away from online implementation into GEOS-Chem.


|-valign="top"
|-valign="top"
|Add non-volatile cations to ISORROPIA
|Non-stomatal dry deposition (2-layer canopy model)
|Becky Alexander (UW)
|Michael Vermeuel (Purdue)
|Aerosols
|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
|
|


|-valign="top"
|-valign="top"
|DMS oxidation scheme updating
|Glyoxal updates from isoprene
|Becky Alexander (UW)<br>Qianjie Chen (UW)
|Tzung-May Fu (SUSTech)
|Chemistry
|Chemistry
|
|
*Delayed - implemented pre-KPP
*Currently bring implemented in KPP by UC Riverside group


|-valign="top"
|-valign="top"
|Heterogeneous sulfate production
|Iodine chemistry
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
|Becky Alexander (UW)<br>Xuan Wang (CUHK)
|Chemistry
|Chemistry
|
|
*Delayed - implemented pre-KPP


|-valign="top"
|-valign="top"
|Hg in WRF-GC
|GFED5 biomass burning
|Yanxu Zhang (Nanjing)
|Eric Roy (MIT)
|Emissions
|
 
|-valign="top"
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|
 
|-valign="top"
|Soil Hg emissions 2010-2020
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|
 
|-valign="top"
|Air-sea exchange parameterization
|Eric Roy (MIT)
|Hg simulation
|
 
|-valign="top"
|Soil Hg emissions parameterization
|Ari Feinberg (IQF-CSIC)
|Hg simulation
|
 
|-valign="top"
|Sea salt uptake of GOM
|Eric Roy (MIT)
|Hg simulation
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Hg with blowing snow
|Photoreduction rate constant
|Yanxu Xhang (Nanjing)
|Eric Roy (MIT)
|Emissions, Hg simulation
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Hg isotopes
|New observations (2010-2020) in standardized Hg benchmark for intercomparison
|Xiaotian Xu, Yanxu Xhang (Nanjing)
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Hg simulation
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Hg in CESM CAM-CHEM
|Hg simulation in GCHP
|Peng Zhang, Yanxu Xhang (Nanjing)
|Eric Roy (MIT)
|Hg simulation
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Complex / multicomplex variables
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
|Shannon Capps (Drexel)
|Hannah Horowitz (UIUC)
|Hg simulation
|
 
|-valign="top"
|Possibly updating Hg oxidation chemistry based on Utah field campaigns
|Jessica Haskins (Utah)
|Hg simulation
|
 
|-valign="top"
|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
|
 
|-valign="top"
|Extend IMI to CO2 (ICI)
|Hannah Nesser (JPL)
|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"
|Species database more accessible; doc updates; TOL discussion
|Jessica Haskins (Utah)
|Structural
|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]]'''''
|}

Latest revision as of 16:19, 31 October 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)
Ongoing carbon simulation fixes in GCClassic and GCHP GCST Carbon simulation Medium
Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver Bob Yantosca (Harvard) Chemistry Medium
Fix obspack - not working in 14.4.0 Bob Yantosca (Harvard) Diagnostics Medium
Make GC-Classic bit-for-bit reproducible upon restart
(part 1 of 2) 		Lizzie Lundgren (Harvard) GC-Classic Medium
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics Medium
Derive convective precipitation flux if using FP/IT generated with Grell-Freitas Yuanjian Zhang (WashU)
Viral Shah (GMAO)
Lizzie Lundgren (Harvard) 		Convection 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 artificially decreased by HEMCO Lixu Jun (Montana) Emissions Simple Delivered
June 2024
Capability to run GCClassic at 0.125x0.15625 resolution Melissa Sulprizio (Harvard)
Xiaolin Wang (Harvard) 		Nested grid Simple Delivered
Strat-adjusted RF in GCC and GCHP Connor Barker (UCL)
Eloise Marais (UCL) 		Radiation Simple Delivered
Archived TCR-2 OH fields for carbon simulations Kazu Miyazaki (JPL)
Melissa Sulprizio (Harvard) 		Input data Simple Data delivered
Oct 2024
  • This will be the default OH, but users will have the option of selecting other OH fields
  • geos-chem issue #2537
Dust non-sphericity impacts on optical properties Inderjeet Singh (WashU) Aerosols Medium Not yet 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

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
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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