Difference between revisions of "GEOS-Chem model development priorities"

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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
 
'''''[[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 Working Groups and the 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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|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
 
!width="200px"|Patch version in development
 
!width="200px"|Patch version in development
−
!width="200px"|Minor version in development
+
!width="200px"|Major version in development
  
 
|-valign="top"
 
|-valign="top"
−
|align="center"|'''[[GEOS-Chem 13.1.3]]'''
+
|align="center"| -
−
|align="center"|'''[[GEOS-Chem 13.2.0]]'''
+
|align="center"|'''[[GEOS-Chem 14.0.0]]'''
  
 
|}
 
|}
  
 
== 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.
  
 
{| 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/547 Update US emissions to NEI2016]
+
|[https://github.com/geoschem/geos-chem/pull/1198 Fixes to remove differences when restarting the model]
−
|Barron Henderson (EPA)<br>Lyssa Freese (MIT)
+
|Lizzie Lundgren (GCST)
−
|Emissions
+
|Bug fixes
−
|Easy
+
|Medium
 
|
 
|
−
*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."
+
*Done for GCHP, slated for 14.0.0
 +
*Problem of REAL4 restart file for GC-Classic will remain
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions|Updated offline dust emissions]]
+
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
−
|Yanshun Li (WUStL)
+
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)<br>Mike Long (Harvard)
−
|Emissions
+
|Specialty simulation
−
|Easy
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|[https://github.com/geoschem/geos-chem/pull/459 Updates to enable automated run directory creation]
+
−
|GCST
+
−
|Run directory
+
 
|Medium
 
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/666 Modularize FAST-JX]
+
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
−
|Lizzie Lundgren (GCST)
+
|Melissa Sulprizio (GCST)
−
|Structural
+
−
|Difficult
+
−
|
+
−
 
+
−
|-
+
−
|[https://acp.copernicus.org/articles/17/3699/2017/ Blowing snow emissions of sea salt and sea salt bromide]
+
−
|Lyatt Jaegle (UW)
+
 
|Emissions
 
|Emissions
−
|Medium
+
|Easy
 
|
 
|
−
*Delivered to GCST (Jun 2020)
 
−
*See [https://github.com/geoschem/geos-chem/pull/356 geoschem/geos-chem PR #356]
 
−
 
−
|}
 
−
 
−
== Feature integration in the queue ==
 
−
 
−
{| border=1 cellspacing=0 cellpadding=5
 
−
|-bgcolor="#CCCCCC"
 
−
!width="200px"|Feature
 
−
!width="200px"|Contributor(s)
 
−
!width="100px"|Model scope
 
−
!width="100px"|Ease of implementation
 
−
!width="300px"|Notes
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/preprints/gmd-2020-380/ Dust emissions from Meng et al. (in review)]
+
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx]
−
|Jun Meng (WUStL)<br>Yanshun Li (WUStL)
+
|Lee Murray (Rochester)<br>Melissa Sulprizio (GCST)
 
|Emissions
 
|Emissions
 
|Easy
 
|Easy
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|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2879/2020/ Improved wet scavenging from Luo et al. (2020)] (as option)
+
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
−
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
+
|Hongjian Weng (PKU)
−
|Wet deposition
+
|Emissions
−
|Medium
+
|Easy
 
|
 
|
−
*Delivered to GCST (Nov 2020)
+
*Delivered to GCST (Dec 2021)
−
*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]
+
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
−
|Bo Zhang
+
|Hongjian Weng (PKU)
 
|Emissions
 
|Emissions
−
|Medium
+
|Easy
 
|
 
|
−
*The existing Rn emissions will remain as an option
+
*Delivered to GCST (Dec 2021)
−
*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]
+
|[https://github.com/geoschem/geos-chem/discussions/1022 Add new species concentration diagnostic in units of molec/cm3]
−
|Lee Murray (Rochester)
+
|GCST
−
|Emissions
+
|Diagnostics
 
|Easy
 
|Easy
 
|
 
|
 +
*See [https://github.com/geoschem/geos-chem/issues/1022 geoschem/geos-chem #1022]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/560 C2H4 and C2H2 chemistry]
+
|[https://github.com/geoschem/geos-chem/issues/770 Output satellite diagnostics as NetCDF]
−
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
+
|Eloise Marais (UCL)  
−
|Chemistry
+
|Diagnostics
−
|Medium
+
|Easy
 
|
 
|
 +
*See [https://github.com/geoschem/geos-chem/pull/1134 geoschem/geos-chem #1134]
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/publications/2020/moch_2020_hms_global.pdf HMS chemistry]
+
|Usability updates for GCHP run directory
−
|Jonathan Moch (Harvard)
+
|Lizzie Lundgren (GCST)
−
|Chemistry
+
|Structural
−
|Medium
+
|Easy
 
|
 
|
−
*Delivered to GCST (Sep 2020)
+
*Will impact how users configure GCHP runs
−
*See [https://github.com/geoschem/geos-chem/pull/456 geoschem/geos-chem PR #456]
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.pnas.org/content/117/42/26076 Updated aerosol dry deposition]
+
|Upgrade Fast-JX to Cloud-J
−
|Jeff Pierce (CSU)
+
|Lizzie Lundgren (GCST)
−
|Dry deposition
+
|Structural
−
|Easy
+
|Difficult
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/604 geoschem/geos-chem #604]
+
* [https://github.com/geoschem/cloud-j geoschem/cloud-j]
 +
*Ongoing
 +
 
 +
|}
 +
 
 +
== Feature integration 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.
 +
 
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Ease of implementation
 +
!width="300px"|Notes and References
 +
 
  
 
|-valign="top"
 
|-valign="top"
 
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
 
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
−
|Lu Shen (Harvard)
+
|Mike Long (Harvard) <br> Haipeng Lin (Harvard) <br> Bob Yantosca (GCST) <br> Lu Shen (PKU)
 
|Chemistry
 
|Chemistry
 
|Difficult
 
|Difficult
 
|
 
|
 +
*In testing, publication expected in mid-to-late 2022
 +
*Previous literature: [https://gmd.copernicus.org/articles/15/1677/2022/ Shen et al., 2022], [https://gmd.copernicus.org/articles/13/2475/2020/ Shen et al., 2020]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
−
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
+
|Sam Silva (MIT)
−
|Specialty simulation
+
|Emissions
 
|Medium
 
|Medium
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
+
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
−
*Ideally implemented as a chemical mechanism in KPP
+
*Sam Silva and GCST will work on updating this to a more recent GEOS-Chem version in the near future
 +
 
 +
|-valign="top"
 +
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
 +
|Sam Silva (MIT)
 +
|Emissions &<br>Science
 +
|Medium
 +
|
 +
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
 +
*Sam Silva and GCST will work on updating this to a more recent GEOS-Chem version in the near future
  
 
|}
 
|}
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== Feature integration not yet prioritized ==
 
== Feature integration not yet prioritized ==
  
 +
Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integrating into the model.
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| 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://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
+
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
−
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
+
|Seb Eastham (MIT)
−
|Chemistry
+
|Science
 
|Medium
 
|Medium
 
|
 
|
−
*Delivered to GCST (Jun 2020)
+
*[https://github.com/geoschem/geos-chem/issues/1094 geoschem/geos-chem #1094]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
+
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
−
|Sam Silva (MIT)
+
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
−
|Emissions
+
|Chemistry
 
|Medium
 
|Medium
 
|
 
|
−
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR
+
*Delivered to GCST (Jun 2020)
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/17/3699/2017/ GC-YIBs biosphere-atmospheric chemistry coupled model]
+
|[https://gmd.copernicus.org/articles/13/1137/2020/ GC-YIBs biosphere-atmospheric chemistry coupled model]
 
|Xu Yue (NUIST)
 
|Xu Yue (NUIST)
 
|Science
 
|Science
 
|Easy
 
|Easy
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
+
* [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]
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
 
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
Line 196: Line 201:
 
|
 
|
 
*Delivered to GCST (Feb 2021)
 
*Delivered to GCST (Feb 2021)
−
*See [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
+
* [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
  
 
|-valign="top"
 
|-valign="top"
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|Chemistry
 
|Chemistry
 
|Easy
 
|Easy
−
|
 
−
 
−
|-valign="top"
 
−
|Archived CMIP6 Met Products for GEOS-Chem Input
 
−
|Lee Murray (Rochester)
 
−
|Input data
 
−
|Easy
 
−
|
 
−
*See updates from [http://acmg.seas.harvard.edu/geos/word_pdf_docs/steering_cmte/gc_sc_minutes_24Feb2021.pdf Feb 2021 GCSC meeting]
 
−
*Official announcement coming soon
 
−
 
−
|-valign="top"
 
−
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry]
 
−
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)
 
−
|Chemistry
 
−
|Medium
 
 
|
 
|
  
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|Easy
 
|Easy
 
|
 
|
 +
*Data files delivered to GCST (July 2021)
  
 
|}
 
|}
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== Almost there (< 6 months) ==
 
== Almost there (< 6 months) ==
  
−
{| border=1 cellspacing=0 cellpadding=5
+
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
 
|- 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"
 
|-valign="top"
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|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
+
|[https://iopscience.iop.org/article/10.1088/1748-9326/ac16a3 New soil NOx parameterization]
−
|Sam Silva (MIT)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
−
|Science
+
−
|
+
−
*Identified as a priority for GC 13, but not yet delivered
+
−
 
+
−
|-valign="top"
+
−
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
+
−
|Hongjian Weng (PKU)
+
 
|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]]
 
|[[Grid-independent_emissions|Updated offline sea salt emissions]]
−
|Hongjian Weng (PKU)
 
−
|Emissions
 
−
|
 
−
*Identified as a priority for GC 13, but not yet delivered
 
−
 
−
|-valign="top"
 
−
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
 
 
|Hongjian Weng (PKU)
 
|Hongjian Weng (PKU)
 
|Emissions
 
|Emissions
Line 283: Line 259:
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for volcano emissions]
+
|Add stratospheric ozone species to full-chemistry simulations
−
|GCST
+
|Lee Murray (Rochester)
−
|Emissions
+
|Chemistry
 
|
 
|
−
*Identified as a priority for GC 13, but not yet developed
 
−
 
−
|-valign="top"
 
−
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
 
−
|GCST
 
−
|Emissions
 
−
|
 
−
*Identified as a priority for GC 13, but not yet developed
 
  
 
|-valign="top"
 
|-valign="top"
Line 306: Line 274:
 
|Kazu Miyazaki (JPL)
 
|Kazu Miyazaki (JPL)
 
|Input data
 
|Input data
−
|
 
−
 
−
|-valign="top"
 
−
|Aromatic VOC chemistry
 
−
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
 
−
|Chemistry
 
 
|
 
|
  
Line 325: Line 287:
 
|Emissions
 
|Emissions
 
|
 
|
−
 
  
 
|-valign="top"
 
|-valign="top"
Line 335: Line 296:
  
 
|-valign="top"
 
|-valign="top"
−
|Read-in of native GEOS output in GCHP
+
|HTAPv3 emissions (0.1 deg, 2002-2018)
−
|WUStL GCST
+
|Emissions & Deposition WG
−
|Input data
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Sebastian Eastham (MIT)
+
|GCST
−
|Transport
+
|Chemistry
−
|GCHP only
+
|
  
 
|-valign="top"
 
|-valign="top"
−
|Add capability to read mass fluxes for use in advection
+
|Updated parameterization of aerosol size distribution for bulk aerosol simulations
−
|Sebastian Eastham (MIT)
+
|Haihui Zhu (WashU)<br>Shixian Zhai (Harvard)
−
|Transport
+
|Aerosols
−
|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
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!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"
Line 371: Line 334:
 
|-valign="top"
 
|-valign="top"
 
|Add sulfate dependence to SOA yield from isoprene in simple SOA
 
|Add sulfate dependence to SOA yield from isoprene in simple SOA
−
|Eloise Marais (Leicester)
+
|Eloise Marais (UCL)
 
|Chemistry
 
|Chemistry
 
|
 
|
Line 386: Line 349:
 
|Christoph Keller (NASA GMAO)
 
|Christoph Keller (NASA GMAO)
 
|Transport Tracer simulation
 
|Transport Tracer simulation
−
|
 
−
 
−
|-valign="top"
 
−
|Streamlining of specialty simulations through HEMCO and KPP
 
−
|GCST
 
−
|Chemistry, Specialty simulations
 
 
|
 
|
  
Line 398: Line 355:
 
== 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
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
Line 403: Line 361:
 
!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"
+
−
|GCHP Adjoint
+
−
|Daven Henze (CU Boulder)
+
−
|Structural
+
−
|
+
  
 
|-valign="top"
 
|-valign="top"

Latest revision as of 15:35, 17 May 2022

GEOS-Chem 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 Working Groups and the Steering Committee. For history of past releases see the GEOS-Chem Versions wiki page.

Release schedule

Please see the GEOS-Chem Release Proposal outlining the procedure and schedule for releasing GEOS-Chem versions.

Merged and awaiting release

See the links below for items merged and awaiting release.

Patch version in development Major version in development
- GEOS-Chem 14.0.0

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
Fixes to remove differences when restarting the model Lizzie Lundgren (GCST) Bug fixes Medium
  • Done for GCHP, slated for 14.0.0
  • Problem of REAL4 restart file for GC-Classic will remain
Joint CO2-CO-CH4-OCS simulation Beata Bukosa (NIWA)
Kevin Bowman (JPL)
Mike Long (Harvard) 		Specialty simulation Medium
Provide climatologies for open fire emissions Melissa Sulprizio (GCST) Emissions Easy
Climatologies for lightning NOx Lee Murray (Rochester)
Melissa Sulprizio (GCST) 		Emissions Easy
Updated offline biogenic emissions Hongjian Weng (PKU) Emissions Easy
  • Delivered to GCST (Dec 2021)
Updated offline soil NOx emissions Hongjian Weng (PKU) Emissions Easy
  • Delivered to GCST (Dec 2021)
Add new species concentration diagnostic in units of molec/cm3 GCST Diagnostics Easy
Output satellite diagnostics as NetCDF Eloise Marais (UCL) Diagnostics Easy
Usability updates for GCHP run directory Lizzie Lundgren (GCST) Structural Easy
  • Will impact how users configure GCHP runs
Upgrade Fast-JX to Cloud-J Lizzie Lundgren (GCST) Structural Difficult

Feature integration 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.

Feature Contributor(s) Model scope Ease of implementation Notes and References


Adaptive chemical solver (as option) Mike Long (Harvard)
Haipeng Lin (Harvard)
Bob Yantosca (GCST)
Lu Shen (PKU) 		Chemistry Difficult
MEGAN3 Sam Silva (MIT) Emissions Medium
  • DOI: 10.5281/zenodo.3614062
  • Sam Silva and GCST will work on updating this to a more recent GEOS-Chem version in the near future
Canopy Physics Model Sam Silva (MIT) Emissions &
Science 		Medium
  • DOI: 10.5281/zenodo.3614062
  • Sam Silva and GCST will work on updating this to a more recent GEOS-Chem version in the near future

Feature integration not yet prioritized

Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integrating into the model.

Feature Contributor(s) Model scope Ease of implementation Notes and References
Stratospheric adjustment with RRTMG in GEOS-Chem Seb Eastham (MIT) Science Medium
Stratospheric HCN chemistry Armin Kleinbohl (JPL)
Debra Weisenstein (Harvard, retired) 		Chemistry Medium
  • Delivered to GCST (Jun 2020)
GC-YIBs biosphere-atmospheric chemistry coupled model Xu Yue (NUIST) Science Easy
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam(CUHK)
Amos Tai (CUHK) 		Science Easy
Extend UCX into the mesosphere Sebastian Eastham (MIT)
Eric Fleming (NASA GMAO) 		Chemistry Easy
Landcover/Fire Emissions Offline LPJlmfire Loretta Mickley (Harvard)
Yang Li (Harvard) 		Emissions Easy
  • Data files delivered to GCST (July 2021)

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
Implement H2 chemistry in UCX Chris Holmes (FSU) Chemistry
  • Identified as a priority for GC 13, but not yet delivered
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions
Updated offline sea salt emissions Hongjian Weng (PKU) Emissions
  • Identified as a priority for GC 13, but not yet delivered
Provide recommended rather than hard-coded scaling factors for online emissions GCST Emissions
  • Identified as a priority for GC 13, but not yet developed
Add stratospheric ozone species to full-chemistry simulations Lee Murray (Rochester) Chemistry
Diagnostic to archive XCO2, XCO, and XCH4 Dylan Jones (Toronto) Diagnostic
Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations Kazu Miyazaki (JPL) Input data
BrC aging Xuan Wang (Harvard)
Melanie Hammer(Dalhousie) 		Chemistry
Shared Socioeconomic Pathways Emission Inventories Hong Liao (NUIST) Emissions
Rediagnosis of RAS convection in GEOS-Chem Tailong He (Toronto)
Dylan Jones (Toronto)
Andrea Molod (NASA/GMAO) 		Convection
  • Work is finished and a manuscript is in preparation.
HTAPv3 emissions (0.1 deg, 2002-2018) Emissions & Deposition WG Emissions
Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism GCST Chemistry
Updated parameterization of aerosol size distribution for bulk aerosol simulations Haihui Zhu (WashU)
Shixian Zhai (Harvard) 		Aerosols

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
Methylethylketone chemistry Jared Brewer (CSU) Chemistry
Add sulfate dependence to SOA yield from isoprene in simple SOA Eloise Marais (UCL) Chemistry
GTMM updates Ben Geyman (Harvard) Hg simulation


Integrating GMAO's tracer gridded component in GCHP Christoph Keller (NASA GMAO) Transport Tracer simulation

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
Implement isotope simulation for CO and CH4 in GCHP Lee Murray (Rochester) Specialty simulation
Migrate LETFK DA scheme to GCHP Kazu Miyazaki (JPL) Structural
Super fast chemistry scheme Benjamin Brown-Steiner (AER)
Makoto Kelp (Harvard) 		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.
Add non-volatile cations to ISORROPIA Becky Alexander (UW) Aerosols
DMS oxidation scheme updating Becky Alexander (UW)
Qianjie Chen (UW) 		Chemistry
  • Delayed - implemented pre-KPP
  • Currently bring implemented in KPP by UC Riverside group
Heterogeneous sulfate production Lin Zhang (PKU)
Becky Alexander (UW)
Yuxuan Wang (U. Houston) 		Chemistry
  • Delayed - implemented pre-KPP
Hg in WRF-GC Yanxu Zhang (Nanjing) Hg simulation
Hg with blowing snow Yanxu Xhang (Nanjing) Emissions, Hg simulation
Hg isotopes Xiaotian Xu, Yanxu Xhang (Nanjing) Hg simulation
Hg in CESM CAM-CHEM Peng Zhang, Yanxu Xhang (Nanjing) Hg simulation
Complex / multicomplex variables Shannon Capps (Drexel) Structural

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