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 Working Groups and the Steering Committee.
== Merged and awaiting release ==


== Merged and awaiting release ==
See the links below for items merged and awaiting release.


{| border=1 cellspacing=0 cellpadding=5  
{| border=1 cellspacing=0 cellpadding=5  
|-bgcolor="#CCCCCC"
|-bgcolor="#CCCCCC"
!width="200px"|Feature
!width="300px"|Mergeable at any time
!width="200px"|Contributor(s)
!width="200px"|Version in development
!width="100px"|Model scope
!width="300px"|Notes


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


|}
|}


== Feature integration in progress ==
== Feature integration in progress ==
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="200px"|Notes
!width="300px"|Notes and References


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/547 Update US emissions to NEI2016]
|ALK4 & R4N2 chemistry
|Barron Henderson (EPA)<br>Lyssa Freese (MIT)
|Jared Brewer (UMN)
|Emissions
|Chemistry
|Easy
|Simple
|
|
*Files available at [ftp://newftp.epa.gov/Air/aqmg/global/NEI2016fh/ this ftp site]. Barron writes, "They have not yet been used in a publication, so I caution users to look for anything and report back."
*[https://github.com/geoschem/geos-chem/pull/2352 geos-chem PR #1625]
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]


|-valign="top"
|-valign="top"
|[https://data.pnnl.gov/dataset/CEDS-4-21-21 CEDS v2 emissions through 2019]
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Patrick Campbell (NOAA-ARL)
|Yi Wang (Iowa)<br>Jun Wang (Iowa)
|Emissions
|Emissions
|Easy
|Medium
|
|
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
*Incorporates new met field TSOIL1


|-valign="top"
|-valign="top"
|[http://globalchange.bnu.edu.cn/research/laiv6 Updated Yuan/BNU MODIS LAI product (2000-2019)]
|Fix pressure handling in HEMCO standalone
|Jenny Fisher (U. Wollongong)
|Melissa Sulprizio (Harvard)
|Emissions<br>Dry deposition
|HEMCO
|Easy
|Simple
|
|
*Processing scripts delivered to GCST (Aug 2020)
*[https://github.com/geoschem/HEMCO/issues/277 HEMCO issue #277]


|-valign="top"
|-valign="top"
|[[Grid-independent_emissions|Updated offline dust emissions]]
|Fix obspack - not working in 14.4.0
|Yanshun Li (WUStL)
|Bob Yantosca (Harvard)
|Emissions
|Diagnostics
|Easy
|Medium
|
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]
|-valign="top"
|Horizontal flux regridding fix in MAPL
|Tom Clune (GMAO)
|GCHP
|Medium
|
|
*[https://github.com/geoschem/MAPL/pull/36 MAPL PR #36]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/459 Updates to enable automated run directory creation]
|Cloud-J 7.7.2 for greater flexibility in external models
|GCST
|Lizzie Lundgren (Harvard)
|Run directory
|Photolysis
|Medium
|Medium
|
|
*[https://github.com/geoschem/Cloud-J/pull/17 Cloud-J PR #17]
*[https://github.com/geoschem/geos-chem/pull/2342 geos-chem PR #2342]
*[https://github.com/geoschem/geos-chem/pull/2353 geos-chem PR #2553]
*[https://github.com/geoschem/Cloud-J/pull/19 Cloud-J PR #19]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/666 Modularize FAST-JX]
|GCHP run directory improvements for mass flux, stretched grid, and GEOS-IT runs
|Lizzie Lundgren (GCST)
|Lizzie Lundgren (Harvard)
|Structural
|GCHP
|Medium
|Medium
|
|
*[https://github.com/geoschem/geos-chem/pull/2326 geos-chem PR #2326]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/728 Updates for GEOS-Chem in CESM]
|Fixes for GEOS-Chem 14.4 in CESM
|Thibaud Fritz (MIT)
|Haipeng Lin (Harvard)<br>Lizzie Lundgren (Harvard)
|Structural
|CESM
|Easy
|Medium
|
*[https://github.com/geoschem/geos-chem/pull/2348 geos-chem PR #2348]
*[https://github.com/geoschem/geos-chem/pull/2349 geos-chem PR #2349]
* More PRs in progress
 
|}
 
== Prioritized and in the queue ==
 
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
 
{| border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
!width="200px"|Feature
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Ease of implementation
!width="100px"|Delivery status
!width="300px"|Notes and References
 
|-valign="top"
|New version of CEDS at 0.1 deg
|Dandan Zhang (WashU)
|Emissions
|Simple
|Delivered June 2024
|
|
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]


|-valign="top"
|-valign="top"
|[https://www.sciencedirect.com/science/article/abs/pii/S1352231019305138?via%3Dihub Trace metal simulation]
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
|Junwei Xu (Dalhousie)
|Lizzie Lundgren (Harvard)
|Specialty simulation
|GC-Classic
|Medium
|Medium
|
|
*Adding trace metal species to TransportTracers simulation
|
*Daily data files are very large; will try to condense
*[https://github.com/geoschem/HEMCO/issues/18 HEMCO issue #18]
 
|}
|}


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


{| border=1 cellspacing=0 cellpadding=5  
{| 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="200px"|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
|
 
|-valign="top"
|Extend aerosol settling
|Eloise Marais (UCL)
|Aerosols
|Not delivered
|
 
|-valign="top"
|Comment back in Ca, Mg, and K cations in aerosol thermo (HETP)
|Becky Alexander (UW)
|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"
|P/L species should not contribute to the error norm
|Obin Sturm (USC)
|Chemistry
|Not delivered
|
 
|-valign="top"
|Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6
|Katie Travis (NASA LARC)
|Chemistry
|Not delivered
|
 
|-valign="top"
|Monoterpene oxidation more species & oxidation products
|Kevin Bates (CU Boulder)
|Chemistry
|Not delivered
|
 
|-valign="top"
|PPN photolysis
|Eloise Marais (UCL)
|Chemistry
|Not delivered
|
 
|-valign="top"
|Global organic N dep from various emissions; nitrate aromatics updates
|May Fu (SUSTech)
|Chemistry +<br>Deposition
|Not delivered
|
 
|-valign="top"
|ALK4 from biogenic vs anthro
|Jared Brewer (UMN)
|Chemistry
|Not delivered
|
 
|-valign="top"
|Dry deposition to F90 to improve readability
|Chris Holmes (FSU)
|Dry Deposition
|Not delivered
|


|-valign="top"
|-valign="top"
!colspan="5" bgcolor="#CCFFFF"|Updates that will affect full-chemistry simulations
|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"
|-valign="top"
|[https://gmd.copernicus.org/preprints/gmd-2020-380/ Dust emissions from Meng et al. (in review)]
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
|Jun Meng (WUStL)<br>Yanshun Li (WUStL)
|Chris Holmes (FSU)
|Emissions
|Emissions
|Easy
|Not delivered
|
|


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2879/2020/ Improved wet scavenging from Luo et al. (2020)] (as option)
|China agriculture NH3 emissions
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
|Amos Tai (CUHK)
|Wet deposition
|Emissions
|Medium
|Not delivered
|
 
|-valign="top"
|T-dependent anthropogenic VOCs
|May Fu (SUSTech)
|Emissions
|Not delivered
|
|
*Delivered to GCST (Nov 2020)
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.  
*See [https://github.com/geoschem/geos-chem/pull/522 geoschem/geos-chem PR #522]
*These updates will replace the Luo et al. (2019) option


|-valign="top"
|-valign="top"
|[https://acp.copernicus.org/articles/21/1861/2021/ Updated Rn-222 emissions]
|New source functions for transport tracers beryllium-7 and beryllium-10
|Bo Zhang
|Minjie Zheng (ETH)
|Emissions
|Emissions
|Difficult
|Not delivered
|
|
*The existing Rn emissions will remain as an option
*https://zenodo.org/records/8372652
*Data are available at https://doi.org/10.5281/zenodo.3942287
*Code is based on v11-02f


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/331 Climatologies for lightning NOx]
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Lee Murray (Rochester)
|Yang Li (Baylor U)<br>Loretta Mickley (Harvard)
|Emissions
|Emissions
|Easy
|Delivered
|
|
*Data involves many files- need to think about temporal frequency


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/560 C2H4 and C2H2 chemistry]
|Australian emissions
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|Emissions
|Medium
|Not delivered
|
|


|-valign="top"
|-valign="top"
|[http://acmg.seas.harvard.edu/publications/2020/moch_2020_hms_global.pdf HMS chemistry]
|Hg geogenic emissions (volcanic, rock weathering)
|Jonathan Moch (Harvard)
|Eric Roy (MIT)
|Chemistry
|Emissions
|Medium
|Not delivered
|
|
*Delivered to GCST (Sep 2020)
*See [https://github.com/geoschem/geos-chem/pull/456 geoschem/geos-chem PR #456]


|-
|-valign="top"
|[https://acp.copernicus.org/articles/17/3699/2017/ Blowing snow emissions of sea salt and sea salt bromide]
|Hg biomass burning - FINN2.5 & GFED4
|Lyatt Jaegle (UW)
|Eric Roy (MIT)
|Emissions
|Emissions
|Medium
|Not delivered
|
 
|-valign="top"
|BCC-GC online
|Lin Zhang (PKU)
|External Model
|Not delivered
|
|
*Delivered to GCST (Jun 2020)
*See [https://github.com/geoschem/geos-chem/pull/356 geoschem/geos-chem PR #356]


|-valign="top"
|-valign="top"
|[https://www.pnas.org/content/117/42/26076 Updated aerosol dry deposition]
|GC-YIBS with online fire emissions
|Jeff Pierce (CSU)
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
|Dry deposition
|External Model
|Easy
|Not delivered
|
|
*See [https://github.com/geoschem/geos-chem/issues/604 geoschem/geos-chem #604]


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
|GISS-GC offline (GCAP)
|Lu Shen (Harvard)
|Lee Murray (Rochester)
|Chemistry
|GCAP
|Difficult
|Not delivered
|
|


|-valign="top"
|-valign="top"
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
|Archived TCR-2 OH fields for carbon simulations
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
|Kazu Miyazaki (JPL)
|Specialty simulation
|Input data
|Medium
|Not delivered
|
|
*See [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
*This will be the default OH, but users will have the option of selecting other OH fields
*Ideally implemented as a chemical mechanism in KPP


|}
|}


== Feature integration not yet prioritized ==
== 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.


{| 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="100px"|Ease of implementation
!width="420px"|Notes and References
!width="200px"|Notes
 
 
|-valign="top"
|Capture all trop and PBL height changes in budget diagnostics
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Diagnostics
|
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 
|-valign="top"
|Dust non-sphericity impacts on optical properties
|Inderjeet Singh (WashU)
|Aerosols
|
 
|-valign="top"
|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"
|-valign="top"
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
|KPP standalone + 3D Interface
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
|Obin Sturm (USC)
|Chemistry
|Chemistry
|Medium
|
|
*Delivered to GCST (Jun 2020)


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
|Load balancing in chemistry solver (GCHP)
|Sam Silva (MIT)
|Zhouran (Jordan) Sun (WashU)
|Emissions
|Chemistry +<br>Performance
|Medium
|
|
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR


|-valign="top"
|-valign="top"
|[https://acp.copernicus.org/articles/17/3699/2017/ GC-YIBs biosphere-atmospheric chemistry coupled model]
|UCX chemistry in mesosphere (GCHP/GCClassic)
|Xu Yue (NUIST)
|Helena McDonald (MIT)
|Science
|Chemistry
|Easy
|
|
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]


|-valign="top"
|-valign="top"
|[http://acmg.seas.harvard.edu/presentations/IGC9/posters/Tue_Posters_lam_joey.pdf Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Updated aromatic oxidation
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Science
|Chemistry
|Easy
|
|
*Delivered to GCST (Feb 2021)
*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]]
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
|Laura Yang (Harvard)
|Chemistry
|Chemistry
|Easy
|
|


|-valign="top"
|-valign="top"
|Archived CMIP6 Met Products for GEOS-Chem Input
|Implement isotope simulation for CH4 in the carbon simulation
|Lee Murray (Rochester)
|Lee Murray (Rochester)
|Input data
|Chemistry
|Easy
|
|
*See updates from [http://acmg.seas.harvard.edu/geos/word_pdf_docs/steering_cmte/gc_sc_minutes_24Feb2021.pdf Feb 2021 GCSC meeting]
*Will have to change negative emissions from soil to a first-order loss process
*Official announcement coming soon


|-valign="top"
|-valign="top"
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry]
|Active mesospheric chemistry
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)
|Helena McDonald (MIT)<br>Seb Eastham (ICL)
|Chemistry
|Chemistry
|Medium
|
|


|-valign="top"
|-valign="top"
|Landcover/Fire Emissions Offline LPJlmfire
|Documentation for adding additional aerosol species
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
|Connor Barker (UCL)
|Emissions
|Documentation
|Easy
|
|


|}
|-valign="top"
|Column diagnostics
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
|Diagnostics
|


== Almost there (< 6 months) ==
|-valign="top"
|TOMAS rate diagnostics -- improve performance
|Betty Croft (WashU/Dal)
|Diagnostics +<br>Performance
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Archive gamma values from heterogeneous chemistry
!width="200px"|Feature
|Bob Yantosca (Harvard)
!width="200px"|Contributor(s)
|Diagnostics
!width="100px"|Model scope
|
!width="300px"|Notes


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
|RRTMG Documentation
|Chris Holmes (FSU)
|GCST
|Chemistry
|Documentation
|
|
*Identified as a priority for GC 13, but not yet delivered


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Canopy Physics Model
|Sam Silva (MIT)
|Sam Silva (MIT)
|Science
|Dry Deposition
|
 
|-valign="top"
|Dry deposition diagnostics by land cover
|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
|
|
*Identified as a priority for GC 13, but not yet delivered


|-valign="top"
|-valign="top"
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
|Historic biomass burning (1750-2010)
|Hongjian Weng (PKU)
|Pengfei (Gtech)
|Emissions
|Emissions
|
|
*Identified as a priority for GC 13, but not yet delivered
*Waiting on updated MODIS LAI data


|-valign="top"
|-valign="top"
|[[Grid-independent_emissions|Updated offline sea salt emissions]]
|Rice methane emissions
|Hongjian Weng (PKU)
|Zichong Cheng (Harvard)
|Emissions+<br>Carbon simulation
|
 
|-valign="top"
|Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.)
|Katie Travis (NASA)<br>Kelvin Bates (CU Boulder)
|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]]
|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"
|Provide recommended rather than hard-coded scaling factors for online emissions
|New prior CO2 biospheric fluxes from CMS-FLUX and GMAO
|GCST
|Kevin Bowman (JPL)<br>Lesley Ott (GMAO)
|Emissions
|Emissions
|
|
*Identified as a priority for GC 13, but not yet developed
*GMAO can provide high-resolution  fluxes (as high as 12 km)


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for volcano 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"
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
|EDGAR v8.1_toxHg emissions for 1970-2022
|GCST
|Eric Roy (MIT)
|Emissions
|Emissions
|
|
*Identified as a priority for GC 13, but not yet developed


|-valign="top"
|-valign="top"
|Diagnostic to archive XCO2, XCO, and XCH4
|Improve pressure handling in GCHP advection
|Dylan Jones (Toronto)
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
|Diagnostic
|GCHP
|
|


|-valign="top"
|-valign="top"
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
|Add error trap for duplicate scale factors in HEMCO
|Kazu Miyazaki (JPL)
|Bob Yantosca (Harvard)
|Input data
|HEMCO
|
 
|-valign="top"
|Integration testing: Add stretched grid
|Lizzie Lundgren (Harvard)
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Aromatic VOC chemistry
|Integration testing: Add GCAP2
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
|GCST
|Chemistry
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|BrC aging
|Integration testing: Add GCHP mass flux run
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
|Lizzie Lundgren (Harvard)
|Chemistry
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Shared Socioeconomic Pathways Emission Inventories
|Integration testing: Add run with all diagnostics turned on
|Hong Liao (NUIST)
|GCST
|Emissions
|Quality Assurance
|
|


|-valign="top"
|Integration testing: Reinstate TOMAS40
|Betty Croft (Dalhousie/WashU)
|Quality Assurance
|


|-valign="top"
|-valign="top"
|Rediagnosis of RAS convection in GEOS-Chem
|Strat-adjusted RF in GCC and GCHP
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Convection
|Radiation
|
|
*Work is finished and a manuscript is in preparation.


|-valign="top"
|-valign="top"
|Read-in of native GEOS output in GCHP
|Continue cleanup of C-preprocessor switches
|WUStL GCST
|Lizzie Lundgren (Harvard)
|Input data
|Structural
|
|


|-valign="top"
|-valign="top"
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
|Updates to Luo deposition scheme
|Sebastian Eastham (MIT)
|Gan Luo (Albany)
|Transport
|Wet Deposition
|GCHP only
|
*New version, keep as switch (not default)


|-valign="top"
|-valign="top"
|Add capability to read mass fluxes for use in advection
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Sebastian Eastham (MIT)
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
|Transport
|Wet Deposition
|GCHP only
|


|}
|}


== Over the horizon (6-12 months) ==
== 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.


{| border=1 cellspacing=0 cellpadding=5
{| border=1 cellspacing=0 cellpadding=5
Line 396: Line 577:
!width="200px"|Contributor(s)
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Model scope
!width="300px"|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"
|-valign="top"
|Methylethylketone chemistry
|H2 as an active species
|Jared Brewer (CSU)
|Seb Eastham (ICL)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Add sulfate dependence to SOA yield from isoprene in simple SOA
|HCN, acetonitrile as fire tracers
|Eloise Marais (Leicester)
|Kevin Bates (CU Boulder)
|Chemistry
|Chemistry
|
|


|-valign="top"
|-valign="top"
|GTMM updates
|Implement ethane in carbon simulation
|Ben Geyman (Harvard)
|Yuzhong Zhang (Westlake)
|Chemistry
|
 
|-valign="top"
|VCPs emissions
|Kelvin Bates (CU Boulder)
|Emissions
|
 
|-valign="top"
|Mesospheric source of CO
|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"
|Furan emission factors (updates existing emissions)
|Lu Hu (Montana)<br>Lixu Jin (Montana)
|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
|
 
|-valign="top"
|Furans emission and chemistry
|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, cooking: tracers species added i.e., D5, ethanol affecting PAN
|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"
|-valign="top"
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
|CESM2-GC offline
|Christoph Keller (NASA GMAO)
|Seb Eastham (ICL)<br>Lee Murray (Rochester)
|Transport Tracer simulation
|Met fields
|
|


|-valign="top"
|-valign="top"
|Streamlining of specialty simulations through HEMCO and KPP
|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"
|Automate integration testing on AWS
|Yidan Tang (WashU)
|Quality Assurance
|
 
|-valign="top"
|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
|
|


Line 432: Line 822:


== Longer term (12-24 months)==
== 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.


{| border=1 cellspacing=0 cellpadding=5
{| border=1 cellspacing=0 cellpadding=5
Line 438: Line 830:
!width="200px"|Contributor(s)
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Model scope
!width="300px"|Notes
!width="420px"|Notes and References


|-valign="top"
|-valign="top"
|GCHP Adjoint
|Modal aerosol model (MAM7) in GCHP
|Daven Henze (CU Boulder)
|Shreya Sharma (MIT)
|Structural
|Aerosols
|
 
|-valign="top"
|Online OCIM ocean biogeochemistry
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
|Chemistry
|
 
|-valign="top"
|Perchlorate chemistry
|Yuk Chun Chan (UW)
|Chemistry
|
 
|-valign="top"
|Non-stomatal dry deposition (2-layer canopy model)
|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"
|-valign="top"
|Implement isotope simulation for CO and CH4 in GCHP
|Lightning NOx production rates
|Lee Murray (Rochester)
|Bex Horner (UCL)
|Specialty simulation
|Emissions
|
|


|-valign="top"
|-valign="top"
|Migrate LETFK DA scheme to GCHP
|HFO and CF3CHO
|Kazu Miyazaki (JPL)
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
|Structural
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Super fast chemistry scheme
|Glyoxal updates from isoprene
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
|Tzung-May Fu (SUSTech)
|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
|Iodine chemistry
|Becky Alexander (UW)
|Becky Alexander (UW)<br>Xuan Wang (CUHK)
|Aerosols
|Chemistry
|
|


|-valign="top"
|-valign="top"
|DMS oxidation scheme updating
|Chlorine/Perchlorate
|Becky Alexander (UW)<br>Qianjie Chen (UW)
|Yukchun Chan (UW)
|Chemistry
|Chemistry
|
|
*Delayed - implemented pre-KPP
*Currently bring implemented in KPP by UC Riverside group


|-valign="top"
|-valign="top"
|Heterogeneous sulfate production
|Playa dust chemistry to improve Cl over land
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
|Jessica Haskins (Utah)
|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
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Hg with blowing snow
|Soil Hg emissions 2010-2020
|Yanxu Xhang (Nanjing)
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Emissions, Hg simulation
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Hg isotopes
|Air-sea exchange parameterization
|Xiaotian Xu, Yanxu Xhang (Nanjing)
|Eric Roy (MIT)
|Hg simulation
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Hg in CESM CAM-CHEM
|Soil Hg emissions parameterization
|Peng Zhang, Yanxu Xhang (Nanjing)
|Ari Feinberg (IQF-CSIC)
|Hg simulation
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Complex / multicomplex variables
|Sea salt uptake of GOM
|Shannon Capps (Drexel)
|Eric Roy (MIT)
|Hg simulation
|
 
|-valign="top"
|Photoreduction rate constant
|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"
|Hg simulation in GCHP
|Eric Roy (MIT)
|Hg simulation
|
 
|-valign="top"
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
|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]]'''''
|}

Revision as of 19:31, 27 June 2024

On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the Working Groups and the Steering Committee. For history of past releases see the GEOS-Chem Versions wiki page.

Merged and awaiting release

See the links below for items merged and awaiting release.

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

Feature integration in progress

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

Feature Contributor(s) Model scope Ease of implementation Notes and References
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry Simple
New soil NOx parameterization Yi Wang (Iowa)
Jun Wang (Iowa) 		Emissions Medium
Fix pressure handling in HEMCO standalone Melissa Sulprizio (Harvard) HEMCO Simple
Fix obspack - not working in 14.4.0 Bob Yantosca (Harvard) Diagnostics Medium
Horizontal flux regridding fix in MAPL Tom Clune (GMAO) GCHP Medium
Cloud-J 7.7.2 for greater flexibility in external models Lizzie Lundgren (Harvard) Photolysis Medium
GCHP run directory improvements for mass flux, stretched grid, and GEOS-IT runs Lizzie Lundgren (Harvard) GCHP Medium
Fixes for GEOS-Chem 14.4 in CESM Haipeng Lin (Harvard)
Lizzie Lundgren (Harvard) 		CESM Medium

Prioritized and in the queue

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

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

Ready to go in

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

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


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

Almost there (< 6 months)

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

Feature Contributor(s) Model scope Notes and References


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

Over the horizon (6-12 months)

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

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

Longer term (12-24 months)

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

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