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]]'''''
 
−
 
 
On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the [https://geos-chem.seas.harvard.edu/geos-working-groups Working Groups] and the [https://geos-chem.seas.harvard.edu/geos-steering-cmte Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
 
On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the [https://geos-chem.seas.harvard.edu/geos-working-groups Working Groups] and the [https://geos-chem.seas.harvard.edu/geos-steering-cmte Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
−
 
−
== Release schedule ==
 
−
 
−
Please see the [http://wiki.seas.harvard.edu/geos-chem/images/e/e1/GEOS-Chem_Release_Proposal.pdf GEOS-Chem Release Proposal] outlining the procedure and schedule for releasing GEOS-Chem versions.
 
  
 
== Merged and awaiting release ==
 
== Merged and awaiting release ==
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{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
−
!width="200px"|Patch version in development
+
!width="300px"|Mergeable at any time
−
!width="200px"|Major version in development
+
!width="200px"|Version in development
  
 
|-valign="top"
 
|-valign="top"
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|align="center"| -
+
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
−
|align="center"|'''[[GEOS-Chem 14.2.0]]'''
+
|align="center"|'''[[GEOS-Chem 14.4.0]]'''
  
 
|}
 
|}
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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"|Ease of implementation
 
!width="100px"|Ease of implementation
 
!width="300px"|Notes and References
 
!width="300px"|Notes and References
−
 
−
|-valign="top"<
 
−
|Upgrade Fast-JX to Cloud-J
 
−
|Lizzie Lundgren (Harvard)
 
−
|Photolysis
 
−
|Complicated
 
−
|
 
−
*Ongoing
 
  
 
|-valign="top"
 
|-valign="top"
−
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|Bob Yantosca (Harvard)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
|Structural
+
|Emissions
−
|Complicated
+
|Simple
 
|
 
|
−
*Ongoing
 
  
 
|-valign="top"
 
|-valign="top"
−
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
−
|Bob Yantosca (Harvard)
+
|Haihui Zhu (WashU)
−
|Model performance
+
|Aerosols
 
|Medium
 
|Medium
 
|
 
|
−
*Ongoing (will be done as time allows)
+
*[https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1292/ Zhu et al., EGUsphere, submitted 2023.]
 +
*[https://github.com/geoschem/geos-chem/pull/1902 geos-chem PR #1902]
  
 
|-valign="top"
 
|-valign="top"
−
|TOMAS in GCHP
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|Betty Croft (WashU)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
−
|Aerosols
+
|Emissions
 
|Medium
 
|Medium
 
|
 
|
−
*Slated for 14.2.0
+
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
−
*[https://github.com/geoschem/GCHP/pull/221 geoschem/GCHP PR #221]
+
*Incorporates new met field TSOIL1
−
*[https://github.com/geoschem/geos-chem/pull/1261 geoschem/geos-chem PR #1261]
+
−
*[https://github.com/geoschem/HEMCO/pull/145 geoschem/HEMCO PR #145]
+
  
 
|-valign="top"
 
|-valign="top"
−
|Update transport tracer simulation for consistency with the tracer gridded component in GEOS
+
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
−
|Melissa Sulprizio (Harvard)
+
|Lizzie Lundgren (Harvard)
−
|TransportTracer simulation
+
|GC-Classic
 
|Medium
 
|Medium
 
|
 
|
−
*Ongoing
+
*[https://github.com/geoschem/HEMCO/issues/18 hemco issue #18]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://doi.org/10.5194/acp-23-1227-2023 Nitrate photolysis]
+
|Replace ISORROPIA with [https://gmd.copernicus.org/articles/17/2197/2024/ HETPv1.0]
−
|Viral Shah (NASA GMAO)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (ICL)
−
|Chemistry
+
|Aerosol thermodynamics
−
|Simple
+
|Medium
 
|
 
|
−
*Slated for 14.2.0
+
*[https://github.com/geoschem/geos-chem/issues/2235 geos-chem issue #2235]
−
*See [https://github.com/geoschem/geos-chem/pull/1623 geoschem/geos-chem PR #1623]
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/1627 Bug fix: Add S(IV)+HOBr and S(IV)+HOCl rxn into fullchem mechanism (they had been inadvertently omitted)]
+
|Only convert units for species that need it
−
|Becky Alexander (UW)
+
|Bob Yantosca (Harvard)
−
|Chemistry<br>Bug fix
+
|Unit conversions
−
|Simple
+
|Medium
 
|
 
|
−
*Slated for 14.2.0
+
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]
−
*[https://github.com/geoschem/geos-chem/pull/1630 geoschem/geos-chem PR #1630]
+
−
*[https://github.com/geoschem/geos-chem/issues/1627 geoschem/geos-chem #1627]
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/1547 Fix sea salt alkalinity and heterogeneous acid-catalyzed halogen chemistry]
+
|Capture all trop and PBL height changes in budget diagnostics
−
|Becky Alexander (UW)
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
−
|Chemistry<br>Bug fix
+
−
|Simple
+
−
|
+
−
*Slated for 14.2.0
+
−
*[https://github.com/geoschem/geos-chem/pull/1702 geoschem/geos-chem #1702]
+
−
*Implementing the original fix causes a convergence error in KPP. This may be resolved with a better choice of tolerance for the KPP solver. We are investigating.
+
−
 
+
−
|-valign="top"
+
−
|[https://github.com/geoschem/geos-chem/issues/1529 Bug fix: Initialize CO2 to a relevant value for full-chemistry]
+
−
|Mike Long (GMAO)
+
−
|Chemistry
+
−
|Simple
+
−
|
+
−
*Slated for 14.2.0
+
−
 
+
−
|-valign="top"
+
−
|Retire all BPCH diagnostics
+
−
|Bob Yantosca (Harvard)
+
 
|Diagnostics
 
|Diagnostics
−
|Simple
+
|Medium
 
|
 
|
−
*Slated for 14.2.0
+
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
−
* Can be done immediately following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]  
+
  
−
|-valign="top"
+
|}
−
|[https://github.com/geoschem/geos-chem/issues/1429 Update SO4 production in cloud-droplets over oceans]
+
−
|Becky Alexander (UW)
+
−
|Aerosols
+
−
|Simple
+
−
|
+
−
*Slated for 14.2.0
+
−
*See [https://github.com/geoschem/geos-chem/pull/1434 geoschem/geos-chem PR #1434]
+
−
*See [https://github.com/geoschem/geos-chem/issues/1429 geoschem/geos-chem #1429]
+
  
−
|-valign="top"
+
== Prioritized and in the queue ==
−
|[https://github.com/geoschem/geos-chem/pull/1292 Update entrainment-limited kinetics in clouds]
+
−
|Chris Holmes (FSU)
+
−
|Chemistry
+
−
|Simple
+
−
|
+
−
*Slated for 14.2.0
+
−
*See [https://github.com/geoschem/geos-chem/pull/1292 geoschem/geos-chem PR #1292]
+
  
−
|-valign="top"
+
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
−
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
+
−
|Melissa Sulprizio (Harvard)
+
−
|Emissions
+
−
|Simple
+
−
|
+
  
−
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
−
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx]
+
|-bgcolor="#CCCCCC"
−
|Lee Murray (Rochester)
+
!width="200px"|Feature
−
|Emissions
+
!width="200px"|Contributor(s)
−
|Simple
+
!width="100px"|Model scope
−
|
+
!width="100px"|Ease of implementation
−
*See [https://github.com/geoschem/geos-chem/pull/1628 geoschem/geos-chem PR #1628]
+
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Update surface methane boundary condition using NOAA flask data
+
|ALK4 & R4N2 chemistry
−
|Lee Murray (Rochester)
+
|Jared Brewer (UMN)
−
|Input data
+
|Chemistry
−
|Simple
+
|TBD
 +
|Not delivered
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
 +
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022JG006908 Methane emissions from hydropower reservoirs]
+
|Mass flux regridding fix in MAPL
−
|Kyle Delwiche (UC Berkeley)<br>Melissa Sulprizio (Harvard)
+
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
−
|CH4 simulation
+
|GCHP input regridding
−
|Simple
+
|Medium
 
|
 
|
−
 
−
|-valign="top"
 
−
|Updated loss frequencies for CH4 simulation
 
−
|Todd Mooring (Harvard)
 
−
|CH4 simulation
 
−
|Simple
 
 
|
 
|
 +
*[https://github.com/geoschem/GCHP/issues/377 GCHP Issue #377]
 +
*'''Currently on hold, as the submitted update results in zero diff'''
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/1646 Bug fix: Restore vertical allocation of CEDS energy and industry emissions]
+
|New version of CEDS at 0.1 deg
−
|Melissa Sulprizio (Harvard)
+
|Dandan Zhang (WashU)
 
|Emissions
 
|Emissions
 
|Simple
 
|Simple
 +
|Delivered
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/pull/1712 geoschem/geos-chem PR #1712]
+
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
 +
*'''Currently on hold while an issue with seasonality in the new CEDS data is being investigated by the authors.'''
  
 
|}
 
|}
  
−
== Delivered and in the queue ==
+
== Ready to go in ==
  
−
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 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 and References
 
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
+
|KORUS-AQ emissions for East Asia (as an option)
−
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
+
|Katie Travis (NASA)
 
|Emissions
 
|Emissions
 
|Simple
 
|Simple
 
|
 
|
−
*Delivered to GCST (Jul 2022)
 
−
 
−
|}
 
−
 
−
== Delivered but not yet prioritized ==
 
−
 
−
Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integration into GEOS-Chem.
 
−
 
−
{| border=1 cellspacing=0 cellpadding=5
 
−
|-bgcolor="#CCCCCC"
 
−
!width="200px"|Feature
 
−
!width="200px"|Contributor(s)
 
−
!width="100px"|Model scope
 
−
!width="100px"|Ease of implementation
 
−
!width="300px"|Notes and References
 
  
 
|-valign="top"
 
|-valign="top"
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|Matthew Rowlinson and Mat Evans(York)
 
|Matthew Rowlinson and Mat Evans(York)
 
|Emissions
 
|Emissions
−
|Simple
+
|Delivered<br>Jan 2023
 
|
 
|
−
* Global source from https://doi.org/10.1038/s41561-018-0073-0 with spatial distribution from https://doi.org/10.5194/essd-11-1-2019
+
*Global source from https://doi.org/10.1038/s41561-018-0073-0 with spatial distribution from https://doi.org/10.5194/essd-11-1-2019
  
 
|-valign="top"
 
|-valign="top"
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|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
−
|Simple
+
|Delivered<br>Feb 2021
 
|
 
|
−
*Delivered to GCST (Feb 2021)
+
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
−
* [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
+
  
 
|-valign="top"
 
|-valign="top"
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|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
 
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
 
|Emissions
 
|Emissions
−
|Simple
+
|Delivered<br>Jul 2021
 
|
 
|
−
*Data files delivered to GCST (July 2021)
+
*Data involves many files- need to think about temporal frequency
−
*Data are quite large - need to think about storage, compression
+
−
 
+
−
|}
+
−
 
+
−
== Ready but not delivered ==
+
−
 
+
−
Features listed in this table are ready but have not been delivered to the GEOS-Chem Support Team.
+
−
 
+
−
{| border=1 cellspacing=0 cellpadding=5
+
−
|-bgcolor="#CCCCCC"
+
−
!width="200px"|Feature
+
−
!width="200px"|Contributor(s)
+
−
!width="100px"|Model scope
+
−
!width="420px"|Notes and References
+
  
 
|-valign="top"
 
|-valign="top"
−
|Online H2 chemistry
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
 
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
 
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
 
|Chemistry
 
|Chemistry
 +
|Delivered<br>June 2023
 
|
 
|
−
* Pérez-Peña, M.P. et al., ACP, 2022.
+
*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
−
* [https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html DOI: 10.5194/acp-22-12367-2022]
+
*Implemented in v12.5, needs to be brought up to current version
−
 
+
−
|-valign="top"
+
−
|Alk4 & R4N2 chemistry
+
−
|Jared Brewer (Harvard)
+
−
|Chemistry
+
−
|
+
−
* Brewer, J.F. et al., J. Geophys. Res., submitted 2022.  
+
−
* [https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Click here for PDF]
+
  
 
|-valign="top"
 
|-valign="top"
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|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 
|Chemistry
 
|Chemistry
 +
|Not delivered
 
|
 
|
  
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|Katie Travis (NASA)
 
|Katie Travis (NASA)
 
|Chemistry
 
|Chemistry
 +
|Not delivered
 
|
 
|
−
 
−
|-valign="top"
 
−
|Update reactions with new JPL & IUPAC recommendations
 
−
|Kelvin Bates (Harvard)
 
−
|Chemistry
 
−
|
 
−
* Currently running simulations to check magnitude of changes
 
  
 
|-valign="top"
 
|-valign="top"
Line 300: Line 202:
 
|Kelvin Bates (Harvard)
 
|Kelvin Bates (Harvard)
 
|Chemistry
 
|Chemistry
 +
|Not delivered
 
|
 
|
  
Line 306: Line 209:
 
|Betty Croft (Dalhousie)
 
|Betty Croft (Dalhousie)
 
|Aerosols
 
|Aerosols
−
|
+
|Not delivered
−
 
+
−
|-valign="top"
+
−
|New version of CEDS at 0.1 deg
+
−
|Emma Knowland (NASA)
+
−
|Emissions
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
+
−
|Shixian Zhai (Harvard)
+
−
|Emissions
+
−
|
+
−
* Need permission from Qiang Zhang (Tsinghua U.) to distribute data
+
−
 
+
−
|-valign="top"
+
−
|KORUS-AQ emissions for East Asia
+
−
|Katie Travis (NASA)
+
−
|Emissions
+
 
|
 
|
  
Line 331: Line 216:
 
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
 
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
 
|Hg simulation
 
|Hg simulation
 +
|Not delivered
 
|
 
|
  
Line 337: Line 223:
 
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
 
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
 
|Hg simulation<br>WRF-GC
 
|Hg simulation<br>WRF-GC
 +
|Not delivered
 
|
 
|
  
Line 343: Line 230:
 
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
 
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
 
|Hg simulation
 
|Hg simulation
 +
|Not delivered
 
|
 
|
−
* Should be option, not default
+
*Should be option, not default
  
 
|-valign="top"
 
|-valign="top"
Line 350: Line 238:
 
|Chris Holmes (FSU)
 
|Chris Holmes (FSU)
 
|Dry deposition
 
|Dry deposition
 +
|Not delivered
 
|
 
|
 +
 
|}
 
|}
  
Line 377: Line 267:
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
+
|Initial conditions for CH4 correcting background and stratospheric biases
−
|Seb Eastham (MIT)
+
|Todd Mooring (Harvard)
−
|Science
+
|Methane simulation
 
|
 
|
 +
 +
|-valign="top"
 +
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
 +
|Bob Yantosca (Harvard)
 +
|Aerosols<br>Structural
 +
|
 +
*Ongoing
  
 
|-valign="top"
 
|-valign="top"
Line 459: Line 356:
  
 
|-valign="top"
 
|-valign="top"
−
|Gridded EPA (GEPA) version 2 emissions for 2012-2018
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
−
|Bram Maasakkers (SRON)<br>Erin McDuffie (WashU),<br>Melissa Sulprizio (Harvard)
+
|Bob Yantosca (Harvard)
−
|Emissions<br>CH4 simulation
+
|Model performance
 
|
 
|
 +
*Ongoing (will be done as time allows)
 +
 +
|-valign="top"
 +
|Retire all BPCH diagnostics
 +
|Bob Yantosca (Harvard)
 +
|Diagnostics
 +
|
 +
*Can be done following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]
  
 
|-valign="top"
 
|-valign="top"
Line 530: Line 435:
 
|Eloise Marais (UCL)
 
|Eloise Marais (UCL)
 
|Chemistry
 
|Chemistry
−
|
 
−
 
−
|-valign="top"
 
−
|Parameterized effective radius
 
−
|Haihui Zhu (WashU)
 
−
|Aerosols
 
 
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|
  
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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
 

Latest revision as of 20:55, 18 April 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 14.4.0

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
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech) 		Emissions Simple
Parameterization of SNA and OM dry size Haihui Zhu (WashU) Aerosols Medium
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions Medium
Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4 Lizzie Lundgren (Harvard) GC-Classic Medium
Replace ISORROPIA with HETPv1.0 Lizzie Lundgren (Harvard)
Seb Eastham (ICL) 		Aerosol thermodynamics Medium
Only convert units for species that need it Bob Yantosca (Harvard) Unit conversions Medium
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics Medium

Prioritized and in the queue

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

Feature Contributor(s) Model scope Ease of implementation Delivery status Notes and References
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry TBD Not delivered
Mass flux regridding fix in MAPL Tom Clune (GMAO)
Seb Eastham (MIT) 		GCHP input regridding Medium
  • GCHP Issue #377
  • Currently on hold, as the submitted update results in zero diff
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple Delivered
  • geos-chem issue #1745
  • Currently on hold while an issue with seasonality in the new CEDS data is being investigated by the authors.

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 References
KORUS-AQ emissions for East Asia (as an option) Katie Travis (NASA) Emissions Simple
Geologic emission of ethane and propane Matthew Rowlinson and Mat Evans(York) Emissions Delivered
Jan 2023
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam(CUHK)
Amos Tai (CUHK) 		Science Delivered
Feb 2021
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor University)
Loretta Mickley (Harvard) 		Emissions Delivered
Jul 2021
  • Data involves many files- need to think about temporal frequency
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN) 		Chemistry Delivered
June 2023
DMS Chemistry Linia Tashmim (UC Riverside)
William Porter (UC Riverside) 		Chemistry Not delivered
Organic acids (RCOOH) Katie Travis (NASA) Chemistry Not delivered
Improve carbon & nitrogen conservation in reactions Kelvin Bates (Harvard) Chemistry Not delivered
Blowing snow sea salt in TOMAS Betty Croft (Dalhousie) Aerosols Not delivered
Australian anthropogenic Hg emissions Stephen MacFarlane (UOW)
Jenny Fisher (UOW)
Hannah Horowitz (U. Illinois)
Viral Shah (Harvard) 		Hg simulation Not delivered
WRF-GC Hg simulation Xiaotian Xu (Nanjing U.)
Yanxu Zhang (Nanjing U.) 		Hg simulation
WRF-GC 		Not delivered
Updated HgII gas-partical partitioning Kaiyun Liu (Tsinghua U.)
Qingru Wu (Tsinghua U.)
Shuxiao Wang (Tsinghua U.) 		Hg simulation Not delivered
  • Should be option, not default
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry deposition 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
PPN+hv, PPN+OH Robert Ryan (UCL) Chemistry
MBO Michael Vermeuel (UMN) Chemistry
Initial conditions for CH4 correcting background and stratospheric biases Todd Mooring (Harvard) Methane simulation
Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism Bob Yantosca (Harvard) Aerosols
Structural
  • Ongoing
Re-binning of off-line sea salt and dust for use in TOMAS Betty Croft (Dalhousie) Aerosols
Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90 Betty Croft (Dalhousie) Aerosols
ML algorithms for bulk aerosols Arshad Nair (SUNY Albany)
Fangqun Yu (SUNY Albany) 		Aerosols
PM2.5 and PM10 calculations: aerodynamic vs geometric diameters Shixian Zhai (Harvard) Aerosols
Updates to Hodzic SOA scheme Jared Brewer (Harvard) Aerosols
Automated reduction in isoprene scheme Dan Westervelt (Lamont-Doherty) Aerosols
Brown carbon chemsitry Jingqiu Mao (U. Alaska)
Xuan Wang (CUHK) 		Aerosols
GEOS resolution and subgrid convection - Part 2 RAS parameter tuning Tailong He (Toronto)
Dylan Jones (Toronto)
Andrea Molod (NASA GMAO) 		Convection
High-res top-down TROPOMI-derived seasonal mean NOx emissions for China Jintai Lin (PKU) Emissions
  • Horizontal resolution: 5km, temporal resolution: JJA mean
  • monthly data will be available at a later stage; please contact us
Updated biomass burning emission factors and species Tess Carter (MIT) Emissions
Updated offline sea salt emissions Hongjian Weng (PKU)
Jintai Lin (PKU) 		Emissions
Canopy Physics Model Sam Silva (MIT) Emissions &
Science
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Model performance
  • Ongoing (will be done as time allows)
Retire all BPCH diagnostics Bob Yantosca (Harvard) Diagnostics
Assess memory leak in GCHP Killian Murphy (York) Model performance
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York) 		Model performance
Improve run directory templating and creation with init_rd.sh and shared directories Jourdan He (WashU) Run directories
Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc GCST? Documentation

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
Snow / Icy Bromine Becky Alexander (UW)
William Swanson (U. Alaska)
Shuting Zhai (UW) 		Chemistry
Monoterpene oxidation scheme Jessica Haskins (MIT) Chemistry
Fire related VOCs including furans Lu Hu (UMT)
Lixu Jin (UMT) 		Chemistry
Extension of UCX into the mesosphere Seb Eastham (MIT)
Eric Fleming (NASA) 		Chemistry
Methane flux ingestion Eloise Marais (UCL) Chemistry
Dust non-sphericity impacts on surface chem and optical properties Inderjeet Singh (WashU) Aerosols
Size-resolved stratospheric aerosol Seb Eastham (MIT) Aerosols
Extend aerosol settling Eloise Marais (UCL) Aerosols
Stratospheric aerosol APM Fangqun Yu (SUNY) Aerosols
Plume-in-grid model Hongwei Sun (Harvard) Chemistry
Updated lightning NOx: Prescribe from ground and geostationary lightning flashes Lee Murray (Rochester) Emissions
Seb aircraft emissions beyond recent 2019 update Seb Eastham (MIT) Emissions
FRP-based fire emsisions for eastern US at 0.2 deg Charlie Fite (FSU) Emissions
Hg iodine chemistry Yiming Fu
Yanxu Zhang (Nanjing U.) 		Hg simulation
Hg simulation in GCHP Ari Feinberg (MIT)
Lyssa Freese (MIT) 		Hg simulation
Update Hg ocean and soil boundary conditions for consistency with new chemistry Yanxu Zhang (Nanjing U.) Hg simulation
Dry deposition diagnostics by land cover Holly Nowell (FSU) Diagnostics
Dry deposition process diagnostics Holly Nowell (FSU) Diagnostics
Isotope simulation for CO and CH4 in GCHP Lee Murray (Rochester) Carbon simulation
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Melissa Sulprizio (Harvard)
Tia Scarpelli (U. Edinburgh)
Zichong Chen (Harvard) 		Emissions
CH4 simulation
Modularization of aerosols code for interface with GOCART in GEOS Christoph Keller (GMAO) Structural
Improve load balancing in GCHP Seb Eastham (MIT) Model performance
Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer Bo Zhang (NIA)
Hongyu Liu (NIA / NASA Langley) 		Transport
Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer Gan Luo (SUNY Albany)
Fangqun Yu (SUNY-Albany) 		Transport
Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons Seb Eastham (MIT)
Clara Orbe (NASA GISS)
Andrew Schuh (CSU) 		Transport

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
Updates to Aromatic chemistry Stephen MacFarlane (UOW)
Jenny Fisher (UOW) 		Chemistry
Nitrate photolysis Mat Evans (York)
Thomas Sherwen (York)
Matthew Rowlinson (York) 		Chemistry
In aerosol chemistry Halogens Mat Evans (York)
Hansen Cao (CU Boulder) 		Chemistry
Benchmark box model of GC Chemistry Katie Travis (NASA) Chemistry
Alkyl nitrates Alk7, PHAN Katie Travis (NASA) Chemistry
Add stratospheric ozone species to full-chemistry simulations Lee Murray (Rochester) Chemistry
Perchlorate chemistry Yuk Chun Chan (UWAB) Chemistry
Explicit heterogeneous sulfate chemistry Katie Travis (NASA)
Becky Alexander (UT) 		Chemistry
HOx and ozone "emissions" from lightning as option in model to play with Jingqiu (Alaska)
Lee Murray (Rochester) 		Emissions
Sea salt aerosol from sea ice leads Hannah Horowitz (U. Illinois) Emissions
Drought-stress algorithm Wei Li (U. Houston)
Biomass burning injection height profiles Inderjeet Singh (WashU) Emissions
OCIM integration Chris Holmes (FSU)
Lee Murray (Rochester)
Updating landcover products in GEOS-Chem Chris Holmes (FSU)
Jeff Geddes (BU) 		Input data
Dry deposition physical improvement Chris Holmes (FSU) Dry deposition
TOMAS WRF-GC in regional Thailand simulation Win Trivitayanurak (Chulalongkorn U) Aerosols
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