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 [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]].
+
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 ==
 
== Release schedule ==
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|-valign="top"
 
|-valign="top"
|align="center"| -
+
|align="center"|'''[[GEOS-Chem 14.1.1]]'''
|align="center"|'''[[GEOS-Chem 14.0.0]]'''
+
|align="center"|'''[[GEOS-Chem 14.1.0]]'''
  
 
|}
 
|}
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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"
 +
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
 +
|Bob Yantosca (Harvard)
 +
|Structural
 +
|Complicated
 +
|
 +
*Ongoing
  
 
|-valign="top"
 
|-valign="top"
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)<br>Mike Long (Harvard)
+
|Bob Yantosca (Harvard)
|Specialty simulation
+
|Model performance
 
|Medium
 
|Medium
 
|
 
|
*[https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
+
*Ongoing (will be done as time allows)
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
+
|Reduce logfile output in GEOS-Chem and HEMCO
|Melissa Sulprizio (GCST)
+
|Bob Yantosca (Harvard)
|Emissions
+
|Structural
|Easy
+
|Medium
 
|
 
|
 +
*Slated for 14.2.0
 +
*See [https://github.com/geoschem/geos-chem/pull/1549 geoschem/geos-chem PR #1549]
 +
*See [https://github.com/geoschem/hemco/pull/182 geoschem/HEMCO PR #182]
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx]
+
|TOMAS in GCHP
|Lee Murray (Rochester)<br>Melissa Sulprizio (GCST)
+
|Betty Croft (WashU)
|Emissions
+
|Aerosols
|Easy
+
|Medium
 
|
 
|
 +
*Slated for 14.2.0
 +
*[https://github.com/geoschem/GCHP/pull/221 geoschem/GCHP PR #221]
 +
*[https://github.com/geoschem/geos-chem/pull/1261 geoschem/geos-chem PR #1261]
 +
*[https://github.com/geoschem/HEMCO/pull/145 geoschem/HEMCO PR #145]
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
+
|Update transport tracer simulation for consistency with the tracer gridded component in GEOS
|Hongjian Weng (PKU)
+
|Melissa Sulprizio (Harvard)
|Emissions
+
|TransportTracer simulation
|Easy
+
|Medium
 
|
 
|
*Delivered to GCST (Dec 2021)
+
*Ongoing
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
+
|[https://doi.org/10.5194/acp-23-1227-2023 Nitrate photolysis]
|Hongjian Weng (PKU)
+
|Viral Shah (NASA GMAO)
|Emissions
+
|Chemistry
|Easy
+
|Simple
 
|
 
|
*Delivered to GCST (Dec 2021)
+
*Slated for 14.2.0
 +
*See [https://github.com/geoschem/geos-chem/pull/1623 geoschem/geos-chem PR #1623]
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/discussions/1022 Add new species concentration diagnostic in units of molec/cm3]
+
|[https://github.com/geoschem/geos-chem/issues/1585 Reinstate Iy sink reactions on alkaline sea salt aerosol and remove IONO2 recycling on alkaline sea salt aerosol]
|Haipeng Lin (Harvard)
+
|Becky Alexander (UW)
|Diagnostics
+
|Chemistry
|Easy
+
|Simple
 +
|
 +
*Slated for 14.2.0
 +
*See [https://github.com/geoschem/geos-chem/pull/1620 geoschem/geos-chem PR #1620]
 +
*See [https://github.com/geoschem/geos-chem/issues/1585 geoschem/geos-chem #1585]
 +
 
 +
|-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)]
 +
|Becky Alexander (UW)
 +
|Chemistry<br>Bug fix
 +
|Simple
 +
|
 +
*Slated for 14.2.0
 +
*[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"
 +
|[https://github.com/geoschem/geos-chem/issues/1547 Fix sea salt alkalinity and heterogeneous acid-catalyzed halogen chemistry]
 +
|Becky Alexander (UW)
 +
|Chemistry<br>Bug fix
 +
|Simple
 +
|
 +
*Slated for 14.2.0
 +
*[https://github.com/geoschem/geos-chem/pull/1548 geoschem/geos-chem #1548]
 +
*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
 
|
 
|
*See [https://github.com/geoschem/geos-chem/pull/1264 geoschem/geos-chem PR #1264]
+
*Slated for 14.2.0
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/770 Output satellite diagnostics as NetCDF]
+
|Retire all BPCH diagnostics
|Eloise Marais (UCL)  
+
|Bob Yantosca (Harvard)
 
|Diagnostics
 
|Diagnostics
|Easy
+
|Simple
 
|
 
|
*See [https://github.com/geoschem/geos-chem/pull/1134 geoschem/geos-chem #1134]
+
*Slated for 14.2.0
 +
* Can be done immediately following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]  
  
 
|-valign="top"
 
|-valign="top"
|Run directory updates to easily break up GCHP runs in time
+
|[https://github.com/geoschem/geos-chem/issues/1429 Update SO4 production in cloud-droplets over oceans]
|Lizzie Lundgren (GCST)
+
|Becky Alexander (UW)
|Structural
+
|Aerosols
|Easy
+
|Simple
 
|
 
|
*See [https://github.com/geoschem/geos-chem/pull/1259 geoschem/geos-chem #1259]
+
*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"
 
|-valign="top"
|Upgrade Fast-JX to Cloud-J
+
|[https://github.com/geoschem/geos-chem/pull/1292 Update entrainment-limited kinetics in clouds]
|Lizzie Lundgren (GCST)
+
|Chris Holmes (FSU)
|Structural
+
|Chemistry
|Difficult
+
|Simple
 
|
 
|
* [https://github.com/geoschem/cloud-j geoschem/cloud-j]
+
*Slated for 14.2.0
*Ongoing
+
*See [https://github.com/geoschem/geos-chem/pull/1292 geoschem/geos-chem PR #1292]
 +
 
 +
|-valign="top"
 +
|Updating VOC fire emissions and adding lumped furan
 +
|Colette Heald (MIT)<br>Tess Carter (MIT)
 +
|Chemistry
 +
|Simple
 +
|
 +
*See T. Carter et al., [2022]<br>(DOI: [https://doi.org/10.5194/acp-2022-438 10.5194/acp-2022-438])
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
 +
|Melissa Sulprizio (Harvard)
 +
|Emissions
 +
|Simple
 +
|
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx]
 +
|Lee Murray (Rochester)
 +
|Emissions
 +
|Simple
 +
|
 +
*See [https://github.com/geoschem/geos-chem/pull/1628 geoschem/geos-chem PR #1628]
  
 
|}
 
|}
  
== Feature integration in the queue ==
+
== Delivered and in the queue ==
  
 
Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.
 
Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.
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!width="300px"|Notes and References
 
!width="300px"|Notes and References
  
 +
|-valign="top"
 +
|[https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022JG006908 Methane emissions from hydropower reservoirs]
 +
|Kyle Delwich (UC Berkeley)<br>Melissa Sulprizio (Harvard)
 +
|CH4 simulation
 +
|Simple
 +
|
  
 
|-valign="top"
 
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
|Mike Long (Harvard) <br> Haipeng Lin (Harvard) <br> Bob Yantosca (GCST) <br> Lu Shen (PKU)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
|Chemistry
+
|Emissions
|Difficult
+
|Simple
 
|
 
|
*In testing, publication expected in mid-to-late 2022
+
*Delivered to GCST (Jul 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]
+
 
 +
|}
 +
 
 +
== 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"
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
+
|Geologic emission of ethane and propane
|Sam Silva (MIT)
+
|Matthew Rowlinson and Mat Evans(York)
 
|Emissions
 
|Emissions
|Medium
+
|Simple
 
|
 
|
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
+
* 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
*Sam Silva and GCST will work on updating this to a more recent GEOS-Chem version in the near future
+
  
 
|-valign="top"
 
|-valign="top"
|TOMAS in GCHP
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Betty Croft (WashU)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
|Aerosols
+
|Science
|Easy
+
|Simple
|See:
+
|
*[https://github.com/geoschem/GCHP/pull/221 geoschem/GCHP PR #221]
+
*Delivered to GCST (Feb 2021)
*[https://github.com/geoschem/geos-chem/pull/1261 geoschem/geos-chem PR #1261]
+
* [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
*[https://github.com/geoschem/HEMCO/pull/145 geoschem/HEMCO PR #145]
+
  
 +
|-valign="top"
 +
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
 +
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
 +
|Emissions
 +
|Simple
 +
|
 +
*Data files delivered to GCST (July 2021)
 +
*Data are quite large - need to think about storage, compression
  
 
|}
 
|}
  
== Feature integration not yet prioritized ==
+
== Ready but not delivered ==
  
Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integrating into the model.
+
Features listed in this table are ready but have not been delivered to the GEOS-Chem Support Team.
  
 
{| 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="420px"|Notes and References
!width="300px"|Notes and References
+
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
+
|Online H2 chemistry
|Seb Eastham (MIT)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
|Science
+
|Chemistry
|Medium
+
 
|
 
|
*[https://github.com/geoschem/geos-chem/issues/1094 geoschem/geos-chem #1094]
+
* 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]
  
 
|-valign="top"
 
|-valign="top"
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
+
|Alk4 & R4N2 chemistry
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
+
|Jared Brewer (Harvard)
 
|Chemistry
 
|Chemistry
|Medium
 
 
|
 
|
*Delivered to GCST (Jun 2020)
+
* 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"
|[https://gmd.copernicus.org/articles/13/1137/2020/ GC-YIBs biosphere-atmospheric chemistry coupled model]
+
|DMS Chemistry
|Xu Yue (NUIST)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
|Science
+
|Chemistry
|Easy
+
 
|
 
|
* [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
 
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
+
|Organic acids (RCOOH)
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
+
|Katie Travis (NASA)
|Science
+
|Chemistry
|Easy
+
 
|
 
|
*Delivered to GCST (Feb 2021)
 
* [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]]
+
|Update reactions with new JPL & IUPAC recommendations
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
+
|Kelvin Bates (Harvard)
 
|Chemistry
 
|Chemistry
|Easy
 
 
|
 
|
 +
* Currently running simulations to check magnitude of changes
  
 
|-valign="top"
 
|-valign="top"
|Landcover/Fire Emissions Offline LPJlmfire
+
|Improve carbon & nitrogen conservation in reactions
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
+
|Kelvin Bates (Harvard)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Blowing snow sea salt in TOMAS
 +
|Betty Croft (Dalhousie)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|New version of CEDS at 0.1 deg
 +
|Emma Knowland (NASA)
 
|Emissions
 
|Emissions
|Easy
 
 
|
 
|
*Data files delivered to GCST (July 2021)
 
  
 +
|-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
 +
|
 +
 +
|-valign="top"
 +
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
 +
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
 +
|Hg simulation
 +
|
 +
 +
|-valign="top"
 +
|WRF-GC Hg simulation
 +
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation<br>WRF-GC
 +
|
 +
 +
|-valign="top"
 +
|Updated HgII gas-partical partitioning
 +
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
 +
|Hg simulation
 +
|
 +
* Should be option, not default
 +
 +
|-valign="top"
 +
|Dry deposition to F90 (readability)
 +
|Chris Holmes (FSU)
 +
|Dry deposition
 +
|
 
|}
 
|}
  
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|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
+
|PPN+hv, PPN+OH
|Chris Holmes (FSU)
+
|Robert Ryan (UCL)
 
|Chemistry
 
|Chemistry
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
 
  
 
|-valign="top"
 
|-valign="top"
|[https://iopscience.iop.org/article/10.1088/1748-9326/ac16a3 New soil NOx parameterization]
+
|MBO
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
+
|Michael Vermeuel (UMN)
|Emissions
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions|Updated offline sea salt emissions]]
+
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
|Hongjian Weng (PKU)
+
|Seb Eastham (MIT)
|Emissions
+
|Science
 
|
 
|
*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
+
|Re-binning of off-line sea salt and dust for use in TOMAS
|GCST
+
|Betty Croft (Dalhousie)
|Emissions
+
|Aerosols
 
|
 
|
*Identified as a priority for GC 13, but not yet developed
 
  
 
|-valign="top"
 
|-valign="top"
|Add stratospheric ozone species to full-chemistry simulations
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
|Lee Murray (Rochester)
+
|Betty Croft (Dalhousie)
|Chemistry
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Diagnostic to archive XCO2, XCO, and XCH4
+
|ML algorithms for bulk aerosols
|Dylan Jones (Toronto)
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
|Diagnostic
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
|Kazu Miyazaki (JPL)
+
|Shixian Zhai (Harvard)
|Input data
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|BrC aging
+
|Updates to Hodzic SOA scheme
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
+
|Jared Brewer (Harvard)
|Chemistry
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Shared Socioeconomic Pathways Emission Inventories
+
|Automated reduction in isoprene scheme
|Hong Liao (NUIST)
+
|Dan Westervelt (Lamont-Doherty)
|Emissions
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Rediagnosis of RAS convection in GEOS-Chem
+
|Brown carbon chemsitry
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
 +
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
 
|Convection
 
|Convection
 
|
 
|
*Work is finished and a manuscript is in preparation.
 
  
 
|-valign="top"
 
|-valign="top"
|HTAPv3 emissions (0.1 deg, 2002-2018)
+
|Update surface methane boundary condition using NOAA flask data
|Emissions & Deposition WG
+
|Lee Murray (Rochester)
 +
|Input data
 +
|
 +
 
 +
|-valign="top"
 +
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
 +
|Jintai Lin (PKU)
 
|Emissions
 
|Emissions
 
|
 
|
 +
*Horizontal resolution: 5km, temporal resolution: JJA mean
 +
*monthly data will be available at a later stage; please contact us
  
 
|-valign="top"
 
|-valign="top"
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
+
|Updated biomass burning emission factors and species
|GCST
+
|Tess Carter (MIT)
|Chemistry
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updated parameterization of aerosol size distribution for bulk aerosol simulations
+
|Updated offline sea salt emissions
|Haihui Zhu (WashU)<br>Shixian Zhai (Harvard)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
|Aerosols
+
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
 +
|Sam Silva (MIT)
 +
|Emissions &<br>Science
 +
|
 +
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
 +
*Needs to be updated to a more recent GEOS-Chem version
 +
 
 +
|-valign="top"
 +
|Gridded EPA (GEPA) version 2 emissions for 2012-2018
 +
|Bram Maasakkers (SRON)<br>Erin McDuffie (WashU),<br>Melissa Sulprizio (Harvard)
 +
|Emissions<br>CH4 simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Assess memory leak in GCHP
 +
|Killian Murphy (York)
 +
|Model performance
 +
|
 +
*NOTE: Most memory leaks in GCHP have been fixed by [https://github.com/geoschem/geos-chem/pull/1353 geoschem/geos-chem PR #1353].  Need to assess if any memory leaks still remain.
 +
 
 +
|-valign="top"
 +
|Hybrid MPI-OpenMP in GCHP
 +
|Seb Eastham (MIT)<br>Killian Murphy (York)
 +
|Model performance
 +
|
 +
 
 +
|-valign="top"
 +
|Improve run directory templating and creation with init_rd.sh and shared directories
 +
|Jourdan He (WashU)
 +
|Run directories
 +
|
 +
 
 +
|-valign="top"
 +
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
 +
|GCST?
 +
|Documentation
 
|
 
|
  
Line 320: Line 515:
  
 
|-valign="top"
 
|-valign="top"
|Methylethylketone chemistry
+
|Snow / Icy Bromine
|Jared Brewer (CSU)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Monoterpene oxidation scheme
 +
|Jessica Haskins (MIT)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Fire related VOCs including furans
 +
|Lu Hu (UMT)<br>Lixu Jin (UMT)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Extension of UCX into the mesosphere
 +
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Add sulfate dependence to SOA yield from isoprene in simple SOA
+
|Methane flux ingestion
 
|Eloise Marais (UCL)
 
|Eloise Marais (UCL)
 
|Chemistry
 
|Chemistry
Line 332: Line 545:
  
 
|-valign="top"
 
|-valign="top"
|GTMM updates
+
|Parameterized effective radius
|Ben Geyman (Harvard)
+
|Haihui Zhu (WashU)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Dust non-sphericity impacts on surface chem and optical properties
 +
|Inderjeet Singh (WashU)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Size-resolved stratospheric aerosol
 +
|Seb Eastham (MIT)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Extend aerosol settling
 +
|Eloise Marais (UCL)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Stratospheric aerosol APM
 +
|Fangqun Yu (SUNY)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Plume-in-grid model
 +
|Hongwei Sun (Harvard)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
 +
|Lee Murray (Rochester)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Seb aircraft emissions beyond recent 2019 update
 +
|Seb Eastham (MIT)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|FRP-based fire emsisions for eastern US at 0.2 deg
 +
|Charlie Fite (FSU)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Hg iodine chemistry
 +
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
 
|Hg simulation
 
|Hg simulation
 
|
 
|
  
 +
|-valign="top"
 +
|Hg simulation in GCHP
 +
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
 +
|Hg simulation
 +
|
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
|Christoph Keller (NASA GMAO)
+
|Yanxu Zhang (Nanjing U.)
|Transport Tracer simulation
+
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Dry deposition diagnostics by land cover
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
 +
 
 +
|-valign="top"
 +
|Dry deposition process diagnostics
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
 +
 
 +
|-valign="top"
 +
|Isotope simulation for CO and CH4 in GCHP
 +
|Lee Murray (Rochester)
 +
|Carbon simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
 +
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
 +
|Emissions<br>CH4 simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Modularization of aerosols code for interface with GOCART in GEOS
 +
|Christoph Keller (GMAO)
 +
|Structural
 +
|
 +
 
 +
|-valign="top"
 +
|Improve load balancing in GCHP
 +
|Seb Eastham (MIT)
 +
|Model performance
 +
|
 +
 
 +
|-valign="top"
 +
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
 +
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
 +
|Transport
 +
|
 +
 
 +
|-valign="top"
 +
|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)<br>Fangqun Yu (SUNY-Albany)
 +
|Transport
 +
|
 +
 
 +
|-valign="top"
 +
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
 +
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
 +
|Transport
 
|
 
|
  
Line 349: Line 675:
  
 
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.
 
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.
 +
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
Line 357: Line 684:
  
 
|-valign="top"
 
|-valign="top"
|Implement isotope simulation for CO and CH4 in GCHP
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
 +
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
 +
|Emissions
 +
|
 +
*See [https://github.com/geoschem/geos-chem/issues/1288 geoschem/geos-chem #1288]
 +
*[https://github.com/geoschem/geos-chem/issues/1288#issuecomment-1255103962 NOTE: This feature has been tabled for the time being.]
 +
 
 +
|-valign="top"
 +
|Updates to Aromatic chemistry
 +
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Nitrate photolysis
 +
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|In aerosol chemistry Halogens
 +
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Benchmark box model of GC Chemistry
 +
|Katie Travis (NASA)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Alkyl nitrates Alk7, PHAN
 +
|Katie Travis (NASA)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Add stratospheric ozone species to full-chemistry simulations
 
|Lee Murray (Rochester)
 
|Lee Murray (Rochester)
|Specialty simulation
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Migrate LETFK DA scheme to GCHP
+
|Perchlorate chemistry
|Kazu Miyazaki (JPL)
+
|Yuk Chun Chan (UWAB)
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Super fast chemistry scheme
+
|Explicit heterogeneous sulfate chemistry
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
 
|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
+
|ISORROPIA-lite
 
|Becky Alexander (UW)
 
|Becky Alexander (UW)
 
|Aerosols
 
|Aerosols
Line 383: Line 746:
  
 
|-valign="top"
 
|-valign="top"
|DMS oxidation scheme updating
+
|HOx and ozone "emissions" from lightning as option in model to play with
|Becky Alexander (UW)<br>Qianjie Chen (UW)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
|Chemistry
+
|Emissions
 
|
 
|
*Delayed - implemented pre-KPP
 
*Currently bring implemented in KPP by UC Riverside group
 
  
 
|-valign="top"
 
|-valign="top"
|Heterogeneous sulfate production
+
|Sea salt aerosol from sea ice leads
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Hannah Horowitz (U. Illinois)
|Chemistry
+
|Emissions
 
|
 
|
*Delayed - implemented pre-KPP
 
  
 
|-valign="top"
 
|-valign="top"
|Hg in WRF-GC
+
|Drought-stress algorithm
|Yanxu Zhang (Nanjing)
+
|Wei Li (U. Houston)
|Hg simulation
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg with blowing snow
+
|Biomass burning injection height profiles
|Yanxu Xhang (Nanjing)
+
|Inderjeet Singh (WashU)
|Emissions, Hg simulation
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg isotopes
+
|OCIM integration
|Xiaotian Xu, Yanxu Xhang (Nanjing)
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
|Hg simulation
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg in CESM CAM-CHEM
+
|Updating landcover products in GEOS-Chem
|Peng Zhang, Yanxu Xhang (Nanjing)
+
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
|Hg simulation
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Complex / multicomplex variables
+
|Dry deposition physical improvement
|Shannon Capps (Drexel)
+
|Chris Holmes (FSU)
|Structural
+
|Dry deposition
 +
|
 +
 
 +
|-valign="top"
 +
|TOMAS WRF-GC in regional Thailand simulation
 +
|Win Trivitayanurak (Chulalongkorn U)
 +
|Aerosols
 
|
 
|
  
 
|}
 
|}
 +
  
 
----------------
 
----------------
  
 
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
 
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''

Revision as of 14:44, 2 February 2023

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 14.1.1 GEOS-Chem 14.1.0

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
Upgrade Fast-JX to Cloud-J Lizzie Lundgren (Harvard) Photolysis Complicated
  • Ongoing
Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism Bob Yantosca (Harvard) Structural Complicated
  • Ongoing
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Model performance Medium
  • Ongoing (will be done as time allows)
Reduce logfile output in GEOS-Chem and HEMCO Bob Yantosca (Harvard) Structural Medium
TOMAS in GCHP Betty Croft (WashU) Aerosols Medium
Update transport tracer simulation for consistency with the tracer gridded component in GEOS Melissa Sulprizio (Harvard) TransportTracer simulation Medium
  • Ongoing
Nitrate photolysis Viral Shah (NASA GMAO) Chemistry Simple
Reinstate Iy sink reactions on alkaline sea salt aerosol and remove IONO2 recycling on alkaline sea salt aerosol Becky Alexander (UW) Chemistry Simple
Bug fix: Add S(IV)+HOBr and S(IV)+HOCl rxn into fullchem mechanism (they had been inadvertently omitted) Becky Alexander (UW) Chemistry
Bug fix
Simple
Fix sea salt alkalinity and heterogeneous acid-catalyzed halogen chemistry Becky Alexander (UW) Chemistry
Bug fix
Simple
  • Slated for 14.2.0
  • geoschem/geos-chem #1548
  • 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.
Bug fix: Initialize CO2 to a relevant value for full-chemistry Mike Long (GMAO) Chemistry Simple
  • Slated for 14.2.0
Retire all BPCH diagnostics Bob Yantosca (Harvard) Diagnostics Simple
Update SO4 production in cloud-droplets over oceans Becky Alexander (UW) Aerosols Simple
Update entrainment-limited kinetics in clouds Chris Holmes (FSU) Chemistry Simple
Updating VOC fire emissions and adding lumped furan Colette Heald (MIT)
Tess Carter (MIT)
Chemistry Simple
Provide climatologies for open fire emissions Melissa Sulprizio (Harvard) Emissions Simple
Climatologies for lightning NOx Lee Murray (Rochester) Emissions Simple

Delivered and in the queue

Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.

Feature Contributor(s) Model scope Ease of implementation Notes and References
Methane emissions from hydropower reservoirs Kyle Delwich (UC Berkeley)
Melissa Sulprizio (Harvard)
CH4 simulation Simple
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech)
Emissions 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.

Feature Contributor(s) Model scope Ease of implementation Notes and References
Geologic emission of ethane and propane Matthew Rowlinson and Mat Evans(York) Emissions Simple
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam(CUHK)
Amos Tai (CUHK)
Science Simple
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor University)
Loretta Mickley (Harvard)
Emissions Simple
  • Data files delivered to GCST (July 2021)
  • 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.

Feature Contributor(s) Model scope Notes and References
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN)
Chemistry
Alk4 & R4N2 chemistry Jared Brewer (Harvard) Chemistry
DMS Chemistry Linia Tashmim (UC Riverside)
William Porter (UC Riverside)
Chemistry
Organic acids (RCOOH) Katie Travis (NASA) Chemistry
Update reactions with new JPL & IUPAC recommendations Kelvin Bates (Harvard) Chemistry
  • Currently running simulations to check magnitude of changes
Improve carbon & nitrogen conservation in reactions Kelvin Bates (Harvard) Chemistry
Blowing snow sea salt in TOMAS Betty Croft (Dalhousie) Aerosols
New version of CEDS at 0.1 deg Emma Knowland (NASA) Emissions
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
KORUS-AQ emissions for East Asia Katie Travis (NASA) Emissions
Australian anthropogenic Hg emissions Stephen MacFarlane (UOW)
Jenny Fisher (UOW)
Hannah Horowitz (U. Illinois)
Viral Shah (Harvard)
Hg simulation
WRF-GC Hg simulation Xiaotian Xu (Nanjing U.)
Yanxu Zhang (Nanjing U.)
Hg simulation
WRF-GC
Updated HgII gas-partical partitioning Kaiyun Liu (Tsinghua U.)
Qingru Wu (Tsinghua U.)
Shuxiao Wang (Tsinghua U.)
Hg simulation
  • Should be option, not default
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry deposition

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
Stratospheric adjustment with RRTMG in GEOS-Chem Seb Eastham (MIT) Science
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
Update surface methane boundary condition using NOAA flask data Lee Murray (Rochester) Input data
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
Gridded EPA (GEPA) version 2 emissions for 2012-2018 Bram Maasakkers (SRON)
Erin McDuffie (WashU),
Melissa Sulprizio (Harvard)
Emissions
CH4 simulation
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
Parameterized effective radius Haihui Zhu (WashU) Aerosols
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
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa)
Emissions
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
ISORROPIA-lite Becky Alexander (UW) Aerosols
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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