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

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(Longer term (12-24 months))
(Feature integration in progress)
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|align="center"|'''[[GEOS-Chem 14.1.1]]'''
 
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!width="100px"|Ease of implementation
 
!width="100px"|Ease of implementation
 
!width="300px"|Notes and References
 
!width="300px"|Notes and References
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|[https://github.com/geoschem/geos-chem/issues/1547 Fix sea salt alkalinity and heterogeneous acid-catalyzed halogen chemistry]
 +
|Becky Alexander
 +
|Chemistry<br>Bug fix
 +
|Easy
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/1548 geoschem/geos-chem #1548]
 +
*Implementing the original fix causes a convergence error in KPP. This is being investigated.
 +
 +
|-valign="top"
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|[https://github.com/geoschem/geos-chem/issues/1529 Bug fix: Initialize CO2 to a relevant value for full-chemistry]
 +
|Mike Long (GMAO)
 +
|Chemistry
 +
|Easy
 +
|
  
 
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|-valign="top"
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|Simple
 
|Simple
 
|
 
|
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*See [https://github.com/geoschem/geos-chem/pull/1628 geoschem/geos-chem PR #1628]
  
 
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|TransportTracer simulation
 
|TransportTracer simulation
 
|Medium
 
|Medium
 +
|
 +
 +
|-valign="top"<
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|Upgrade Fast-JX to Cloud-J
 +
|Lizzie Lundgren (Harvard)
 +
|Photolysis
 +
|Difficult
 
|
 
|
  
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|Simple
 
|Simple
 
|
 
|
 +
 +
|-valign="top"
 +
|[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]
 +
|Becky Alexander (UW)
 +
|Chemistry
 +
|Simple
 +
|
 +
*Delivered as a patch file off of 13.4.1 (Jan 2023)
 +
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/pull/1292 Update entrainment-limited kinetics in clouds]
 +
|Chris Holmes (FSU)
 +
|Chemistry
 +
|Simple
 +
|
 +
*See [https://github.com/geoschem/geos-chem/pull/1292 geoschem/geos-chem PR #1292]
 +
 +
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|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
 +
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
 +
|Emissions
 +
|Simple
 +
|
 +
*Delivered to GCST (Jul 2022)
 +
 +
|-valign="top"
 +
|[https://doi.org/10.5194/acp-23-1227-2023 Nitrate photolysis]
 +
|Viral Shah (NASA GMAO)
 +
|Chemistry
 +
|Simple
 +
|
 +
*See [https://github.com/geoschem/geos-chem/pull/1623 geoschem/geos-chem PR #1623]
  
 
|}
 
|}
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|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
+
|Geologic emission of ethane and propane
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
+
|Matthew Rowlinson and Mat Evans(York)
 
|Emissions
 
|Emissions
|Simple
 
 
|
 
|
*Delivered to GCST (Jul 2022)
+
* 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
  
 
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*Data files delivered to GCST (July 2021)
 
*Data files delivered to GCST (July 2021)
 
*Data are quite large - need to think about storage, compression
 
*Data are quite large - need to think about storage, compression
 
|-valign="top"
 
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
 
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
 
|Chemistry
 
|Medium
 
|
 
*Delivered to GCST (Jun 2020)
 
  
 
|}
 
|}
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!width="100px"|Model scope
 
!width="100px"|Model scope
 
!width="420px"|Notes and References
 
!width="420px"|Notes and References
 
|-valign="top"
 
|Nitrate photolysis
 
|Viral Shah (NASA GMAO)
 
|Chemistry
 
|
 
* Shah, V., et al., EGUsphere [preprint], 2022. [https://doi.org/10.5194/egusphere-2022-656 DOI: 10.5194/egusphere-2022-656]
 
  
 
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|Chemistry
 
|Chemistry
 
|
 
|
 +
* 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]
  
 
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|Chemistry
 
|Chemistry
 
|
 
|
* Brewer, J.F. et al., J. Geophys. Res., submitted 2022. [https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Click for PDF]
+
* Brewer, J.F. et al., J. Geophys. Res., submitted 2022.  
 +
* [https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Click here for PDF]
 +
 
 +
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|DMS Chemistry
 +
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 +
|Chemistry
 +
|
 +
 
 
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|Organic acids (RCOOH)
 
|Organic acids (RCOOH)
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|Aerosols
 
|Aerosols
 
|
 
|
 
|-valign="top"
 
|Geologic emission of ethane and propane
 
|Matthew Rowlinson and Mat Evans(York)
 
|Emissions
 
|
 
* 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
 
  
 
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|Emissions
 
|Emissions
 
|
 
|
* Need permission to distribute data
 
  
 
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|
 
|
  
|-valign-"top"
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|WRF-GC Hg simulation
 
|WRF-GC Hg simulation
 
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
 
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
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!width="100px"|Model scope
 
!width="100px"|Model scope
 
!width="420px"|Notes and References
 
!width="420px"|Notes and References
 
|-valign="top"
 
|DMS Chemistry
 
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 
|Chemistry
 
|
 
  
 
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|Lee Murray (Rochester)
 
|Lee Murray (Rochester)
 
|Input data
 
|Input data
|
 
 
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|Provide recommended rather than hard-coded scaling factors for online emissions
 
|Melissa Sulprizio (Harvard)
 
|Emissions
 
 
|
 
|
  
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|Emissions
 
|Emissions
 
|
 
|
 
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|HgII deposition too high in 13.4; Hg0 conc too low; should not use as is
 
|Viral Shah (NASA GMAO)<br>Yanxu Zhang (Nanjing U.)<br>Ari Feinberg (MIT)
 
|Hg simulation
 
|
 
* This may have been fixed with the updates by Ari Feinberg described in [https://github.com/geoschem/geos-chem/pull/1367 geos-chem PR #1367].  Can someone in the Hg & POPS wg confirm?
 
  
 
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|Emissions<br>CH4 simulation
 
|Emissions<br>CH4 simulation
 
|
 
|
 
|-valign="top"
 
|GEOS-Chem in CESM 2.3
 
|Lizzie Lundgren (Harvard)
 
|Interfacing with ESMs
 
|
 
*Ongoing
 
  
 
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|
 
|
 
*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.
 
*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"
 
|Point to internal state for species mixing ratios in GCHP and GEOS
 
|Lizzie Lundgren (Harvard)<br>Christoph Keller (NASA)
 
|Structural
 
|
 
 
|-valign="top"
 
|Assess precision in GCHP internal state - use R4 for some?
 
|Lizzie Lundgren (Harvard)
 
|Structural
 
|
 
  
 
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|Seb Eastham (MIT)<br>Killian Murphy (York)
 
|Seb Eastham (MIT)<br>Killian Murphy (York)
 
|Model performance
 
|Model performance
|
 
 
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|Convert HEMCO input files to YAML
 
|Melissa Sulprizio (Harvard)
 
|Structural
 
|
 
 
|-valign="top"
 
|Allow easy disabling of HEMCO emissions for testing
 
|Melissa Sulprizio (Harvard)
 
|Structural
 
 
|
 
|
  
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|GCST?
 
|GCST?
 
|Documentation
 
|Documentation
|
 
 
|-valign="top"<
 
|Upgrade Fast-JX to Cloud-J
 
|Lizzie Lundgren (Harvard)
 
|Structural
 
 
|
 
|
  
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|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
 
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
 
|Emissions<br>CH4 simulation
 
|Emissions<br>CH4 simulation
|
 
 
|-valign="top"
 
|Separate mixing and emissions
 
|Bob Yantosca (Harvard)
 
|Structural
 
 
|
 
|
  
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|Seb Eastham (MIT)
 
|Seb Eastham (MIT)
 
|Model performance
 
|Model performance
|
 
 
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|Update to MAPL 3 in GCHP, including replacement of ExtData.rc with YAML file
 
|Lizzie Lundgren (Harvard)
 
|Structural
 
|
 
 
|-valign="top"
 
|Limit allocation of State_Met to what is needed per simulation
 
|Melissa Sulprizio (Harvard)
 
|Structural
 
|
 
 
|-valign="top"
 
|Make frequency of HEMCO restart file configurable
 
|Melissa Sulprizio (Harvard)
 
|Diagnostics
 
|
 
 
|-valign="top"
 
|Apply masks/scaling in HEMCO based on input category or flag
 
|Melissa Sulprizio (Harvard)
 
|Structural
 
 
|
 
|
  
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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]]'''''

Revision as of 19:50, 27 January 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
Fix sea salt alkalinity and heterogeneous acid-catalyzed halogen chemistry Becky Alexander Chemistry
Bug fix
Easy
Bug fix: Initialize CO2 to a relevant value for full-chemistry Mike Long (GMAO) Chemistry Easy
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
Updating integration test scripts and adding new integration tests Bob Yantosca (Harvard) Testing Medium
TOMAS in GCHP Betty Croft (WashU) Aerosols Medium
Retire all BPCH diagnostics Bob Yantosca (Harvard) Diagnostics Simple
Update SO4 production in cloud-droplets over oceans Becky Alexander (UW) Aerosols 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
Update transport tracer simulation for consistency with the tracer gridded component in GEOS Melissa Sulprizio (Harvard) TransportTracer simulation Medium
Upgrade Fast-JX to Cloud-J Lizzie Lundgren (Harvard) Photolysis Difficult

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
Reinstate Iy sink reactions on alkaline sea salt aerosol and remove IONO2 recycling on alkaline sea salt aerosol Becky Alexander (UW) Chemistry Simple
  • Delivered as a patch file off of 13.4.1 (Jan 2023)
Update entrainment-limited kinetics in clouds Chris Holmes (FSU) Chemistry Simple
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech)
Emissions Simple
  • Delivered to GCST (Jul 2022)
Nitrate photolysis Viral Shah (NASA GMAO) Chemistry Simple

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
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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