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

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This is a list of planned GEOS-Chem model development over the next two years, based on discussions and  [http://www.as.harvard.edu:16080/ctm/geos/geos_meeting_2009.html#wg_reports GEOS-Chem Working Group reports] from the April 2009 GEOS-Chem Users' Meeting. The key model developer or model contact is identified for each item. Items are listed in rough order of decreasing readiness, although this can quickly change. 
+
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
  
We count on user input to augment and prioritize this list, please contact your [http://www.as.harvard.edu/ctm/geos/geos_working_groups.html Working Group Chair] or model scientist [mailto:djacob@fas.harvard.edu Daniel Jacob].
+
On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the [http://acmg.seas.harvard.edu/geos/geos_working_groups.html Working Groups] and the [http://acmg.seas.harvard.edu/geos/geos_steering_cmte.html Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
 +
 
 +
== Release schedule ==
 +
 
 +
Please see the [http://wiki.seas.harvard.edu/geos-chem/images/e/e1/GEOS-Chem_Release_Proposal.pdf GEOS-Chem Release Proposal] outlining the procedure and schedule for releasing GEOS-Chem versions.
 +
 
 +
== Merged and awaiting release ==
 +
 
 +
See the links below for items merged and awaiting release.
 +
 
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Patch version in development
 +
!width="200px"|Minor version in development
 +
 
 +
|-valign="top"
 +
|align="center"|none yet
 +
|align="center"|'''[[GEOS-Chem 13.4.0]]'''
 +
 
 +
|}
 +
 
 +
== 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.
 +
 
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Ease of implementation
 +
!width="300px"|Notes
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/1001 Fix bug in Henry law CALC_HEFF routine in hetchem computations]
 +
|Viral Shah (Harvard
 +
|Chemistry
 +
|Easy
 +
|
 +
* [https://github.com/geoschem/geos-chem/pull/961 geoschem/geos-chem #1001]
 +
 
 +
|-valign="top"
 +
|Use degassing-only volcano emissions for benchmark simulations
 +
|Christoph Keller (GMAO)<br>Daniel Jacob (Harvard)
 +
|Emissions &<br>Benchmarking
 +
|Easy
 +
|
 +
*See [https://github.com/geoschem/geos-chem/pull/1005 geoschem/geos-chem #1005]
 +
*Currently slated for 13.4.0
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/pull/459 Updates to enable automated run directory creation]
 +
|Liam Bindle (GCST)<br>Melissa Sulprizio (GCST)
 +
|Run directory
 +
|Medium
 +
|
 +
 
 +
|-valign="top"
 +
|Upgrade Fast-JX to Cloud-J
 +
|Lizzie Lundgren (GCST)
 +
|Structural
 +
|Difficult
 +
|
 +
*See [https://github.com/geoschem/cloud-j geoschem/cloud-j]
 +
 
 +
|-valign="top"
 +
|Migrating sulfate chemistry into KPP
 +
|Mike Long (GCST)
 +
|Chemistry &<br>Structural
 +
|Difficult
 +
|
 +
*Complete but needs validation & further testing
 +
 
 +
|-valign="top"
 +
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry in KPP]
 +
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)<br>Mike Long (Harvard)
 +
|Chemistry
 +
|Medium
 +
|
 +
 
 +
|-valign="top"
 +
|Add capability to use mass fluxes in advection
 +
|Sebastian Eastham (MIT) <br> Liam Bindle (GCST)
 +
|Transport
 +
|Easy
 +
|
 +
*Identified as a priority for GC 13, but not yet delivered
 +
*GCHP only
 +
 
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
 +
|Melissa Sulprizio (GCST)
 +
|Emissions
 +
|Easy
 +
|
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx], [https://github.com/geoschem/geos-chem/issues/331 biomass burning], and [https://github.com/geoschem/geos-chem/issues/656 volcanoes]
 +
|Lee Murray (Rochester)<br>Melissa Sulprizio (GCST)
 +
|Emissions
 +
|Easy
 +
|
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/pull/945 Add option for driving GEOS-Chem with native GEOS meteorological files]
 +
|Liam Bindle (GCST)
 +
|Structural
 +
|Easy
 +
|
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/pull/990 Change State_Chm%Species from 4D to vector of 3D arrays]
 +
|Lizzie Lundgren (GCST)
 +
|Structural
 +
|Medium
 +
|
 +
|}
 +
 
 +
== Feature integration in the queue ==
 +
 
 +
Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.
 +
 
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Ease of implementation
 +
!width="300px"|Notes
 +
 
 +
|-valign="top"
 +
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
 +
|Sam Silva (MIT)
 +
|Emissions
 +
|Medium
 +
|
 +
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR
 +
*Base code version is 12.3.0
 +
 
 +
|-valign="top"
 +
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
 +
|Sam Silva (MIT)
 +
|Science
 +
|Medium
 +
|
 +
*Code is available at https://zenodo.org/record/3614062
 +
*Base code version is 12.3.0
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/997 Update surface resistance for ozone deposition to ice/snow]
 +
|Ryan Pound (York)<br>Shuting Zhai (UW)
 +
|Drydep
 +
|Easy
 +
|
 +
*See [https://github.com/geoschem/geos-chem/issues/997 geoschem/geos-chem PR #997]
 +
 
 +
|-valign="top"
 +
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
 +
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
 +
|Specialty simulation
 +
|Medium
 +
|
 +
*See [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
 +
*Ideally implemented as a chemical mechanism in KPP
 +
 
 +
|-valign="top"
 +
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
 +
|Mike Long (Harvard) <br> Haipeng Lin (Harvard)
 +
|Chemistry
 +
|Difficult
 +
|
 +
*In testing
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/770 Output satellite diagnostics as NetCDF]
 +
|Eloise Marais (UCL)
 +
|Diagnostics
 +
|Easy
 +
|
 +
 
 +
 
 +
|}
 +
 
 +
== Feature integration not yet prioritized ==
 +
 
 +
Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integrating into the model.
 +
 
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Ease of implementation
 +
!width="300px"|Notes
 +
 
 +
|-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)
 +
 
 +
|-valign="top"
 +
|[https://gmd.copernicus.org/articles/13/1137/2020/ GC-YIBs biosphere-atmospheric chemistry coupled model]
 +
|Xu Yue (NUIST)
 +
|Science
 +
|Easy
 +
|
 +
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
 +
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 +
|Science
 +
|Easy
 +
|
 +
*Delivered to GCST (Feb 2021)
 +
*See [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
 +
 
 +
|-valign="top"
 +
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
 +
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
 +
|Chemistry
 +
|Easy
 +
|
 +
 
 +
|-valign="top"
 +
|Landcover/Fire Emissions Offline LPJlmfire
 +
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
 +
|Emissions
 +
|Easy
 +
|
 +
*Data files delivered to GCST (July 2021)
 +
 
 +
|-valign="top"
 +
|Anthropogenic Methane Emission Inventory for Canada
 +
|Tia Scarpelli (U. Edinburgh)
 +
|Emissions
 +
|Easy
 +
|
 +
*Scarpelli, T.R., D.J. Jacob, M. Moran, F. Reuland, and D. Gordon, [https://projects.iq.harvard.edu/acmg/publications/gridded-inventory-canadas-anthropogenic-methane-emissions A gridded inventory of Canada's anthropogenic methane emissions], submitted to Environ. Res. Lett., 2021.
 +
 
 +
|-valign="top"
 +
|Updated Global Inventory of Methane Emissions from Oil/Gas/Coal (GFEI v2)
 +
|Tia Scarpelli (U. Edinburgh)
 +
|Emissions
 +
|Easy
 +
|
 +
*Scarpelli, T.R., D.J. Jacob, S. Grossman, X. Lu, Z. Qu, M.P. Sulprizio, Y. Zhang, F. Reuland, and D. Gordon, [https://acmg.seas.harvard.edu/files/acmg/files/scarpelli2021_gfei.pdf Updated Global Fuel Exploitation Inventory (GFEI) for methane emissions from the oil, gas, and coal sectors: evaluation with inversions of atmospheric methane observations], submitted to Atmos. Chem. Phys., 2021
 +
 
 +
|}
 +
 
 +
== Almost there (< 6 months) ==
 +
 
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
!Item
+
!width="200px"|Feature
!Author(s)
+
!width="200px"|Contributor(s)
!Status
+
!width="100px"|Model scope
|-
+
!width="420px"|Notes
|Linoz stratospheric ozone
+
 
|Dylan Jones
+
 
|awaiting transfer of code
+
|-valign="top"
|-
+
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
|Improved BL mixing scheme
+
|Chris Holmes (FSU)
|Jintai Lin
+
|Chemistry
|slated for inclusion into v8-02-02
+
|
|-
+
*Identified as a priority for GC 13, but not yet delivered
|BC/OC aerosol emissions from Bond inventory
+
 
|Eric Leibensperger
+
 
|&nbsp;
+
|-valign="top"
|-
+
|[https://iopscience.iop.org/article/10.1088/1748-9326/ac16a3 New soil NOx parameterization]
|KPP chemical solver
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Kumaresh Singh
+
|Emissions
|&nbsp;
+
|
|-
+
 
|Local stratospheric ozone column from GEOS-5
+
|-valign="top"
|GEOS-Chem Support Team
+
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
|&nbsp;
+
|Hongjian Weng (PKU)
|-
+
|Emissions
|Methane including tagged tracers
+
|
|Kevin Wecht
+
*Identified as a priority for GC 13, but not yet delivered
|&nbsp;
+
 
|-
+
|-valign="top"
|Flexible region mask for tagged tracers
+
|[[Grid-independent_emissions|Updated offline sea salt emissions]]
|Dylan Jones<br>Prasad Kasibhatla
+
|Hongjian Weng (PKU)
|&nbsp;
+
|Emissions
|-
+
|
|Update aerosol optical properties
+
*Identified as a priority for GC 13, but not yet delivered
|Colette Heald
+
 
|&nbsp;
+
|-valign="top"
|-
+
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
|Archive tropospheric OH fields from benchmark runs
+
|Hongjian Weng (PKU)
|GEOS-Chem Support Team
+
|Emissions
|&nbsp;
+
|
|-
+
*Identified as a priority for GC 13, but not yet delivered
|Updated strat chem. from GMI Combo
+
 
|Dylan Jones
+
|-valign="top"
|&nbsp;
+
|Provide recommended rather than hard-coded scaling factors for online emissions
|-
+
|GCST
|Acquire long-term MERRA archive
+
|Emissions
|GEOS-Chem Support Team
+
|
|&nbsp;
+
*Identified as a priority for GC 13, but not yet developed
|-
+
 
|Convert model output to NetCDF
+
|-valign="top"
|GEOS-Chem Support Team
+
|Diagnostic to archive XCO2, XCO, and XCH4
|&nbsp;
+
|Dylan Jones (Toronto)
|-
+
|Diagnostic
|Common model adjoint and documentation
+
|
|Daven Henze<br>Kumaresh Singh<br>Monika Kopacz
+
 
|Code merging session scheduled for<br>June 6-9 @ Virginia Tech
+
|-valign="top"
|-
+
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
|Global 1x1.25 model capability
+
|Kazu Miyazaki (JPL)
|Lok Lamsal
+
|Input data
|&nbsp;
+
|
|-
+
 
|Aerosol data sets for benchmarking
+
|-valign="top"
|Colette Heald
+
|BrC aging
|&nbsp;
+
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
|-
+
|Chemistry
|CO2 including tagged tracers
+
|
|Ray Nassar
+
 
|&nbsp;
+
|-valign="top"
|-
+
|Shared Socioeconomic Pathways Emission Inventories
|Data servers for chemistry/climate databases
+
|Hong Liao (NUIST)
|Loretta Mickley
+
|Emissions
|&nbsp;
+
|
|-
+
 
|GFED3 biomass burning
+
|-valign="top"
|Prasad Kasibhatla
+
|Rediagnosis of RAS convection in GEOS-Chem
|&nbsp;
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
|-
+
|Convection
|Chemical updates
+
|
|Mat Evans<br>Fabien Paulot<br>Jingqiu Mao<br>Paul Palmer
+
*Work is finished and a manuscript is in preparation.
|Updated chemical mechanism file ("globchem.dat")<br>to be released with v8-02-01;<br>see [http://www.as.harvard.edu/ctm/geos/wiki_docs/chemistry/chemistry_updates_v4.pdf documentation]
+
 
|-
+
|-valign="top"
|Updated aircraft emissions
+
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
|Lee Murray
+
|Sebastian Eastham (MIT) <br> Liam Bindle (GCST)
|&nbsp;
+
|Transport
|-
+
|
|Sectional aerosol
+
*Identified as a priority for GC 13, but not yet delivered
|Fangqun Yu<br>Peter Adams
+
*GCHP only
|&nbsp;
+
 
|-
+
|-valign="top"
|Interannual lightning
+
|HTAPv3 emissions (0.1 deg, 2002-2018)
|Lee Murray
+
|Emissions & Deposition WG
|&nbsp;
+
|Emissions
|-
+
|
|ISORROPIA II
+
 
|Havala Pye<br>Thanos Nenes<br>Becky Alexander
+
|-valign="top"
|&nbsp;
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|-
+
|GCST
|Fire injection heights
+
|Chemistry
|Maria Val Martin
+
|
|&nbsp;
+
 
|-
+
|-valign="top"
|CCSM3 interface
+
|Updated parameterization of aerosol size distribution for bulk aerosol simulations
|Rokjin Park
+
|Haihui Zhu (WashU)<br>Shixian Zhai (Harvard)
|&nbsp;
+
|Aerosols
|-
+
|
|Soil NOx emission
+
 
|Randall Martin<br>Rynda Hudman
+
|&nbsp;
+
|-
+
|Anthropogenic VOCs update
+
|Dylan Millet<br>
+
|&nbsp;
+
|-
+
|PBAP
+
|Colette Heald
+
|&nbsp;
+
|-
+
|Sulfate/nitrate isotopes
+
|Becky Alexander
+
|&nbsp;
+
|-
+
|Tropospheric bromine chemistry
+
|Justin Parrella
+
|&nbsp;
+
|-
+
|ESMF/MPI capability
+
|GEOS-Chem Support Team
+
|Currently working on columnizing the<br>GEOS-Chem chemistry code for inclusion<br>into the GEOS-5 GCM
+
|-
+
|Spatial reduction mechanism
+
|Mauricio Santillana
+
|&nbsp;
+
|-
+
|GISS Model E interface
+
|Lee Murray
+
|&nbsp;
+
|-
+
|Terrestrial and deep ocean mercury
+
|Nicole Smith-Downey<br>Elsie Sunderland
+
|&nbsp;
+
 
|}
 
|}
  
--[[User:Bmy|Bob Y.]] 12:47, 7 May 2009 (EDT)
+
== Over the horizon (6-12 months) ==
 +
 
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.
 +
 
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes
 +
 
 +
|-valign="top"
 +
|Methylethylketone chemistry
 +
|Jared Brewer (CSU)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Add sulfate dependence to SOA yield from isoprene in simple SOA
 +
|Eloise Marais (UCL)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|GTMM updates
 +
|Ben Geyman (Harvard)
 +
|Hg simulation
 +
|
 +
 
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
 +
|Christoph Keller (NASA GMAO)
 +
|Transport Tracer simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Streamlining of specialty simulations through HEMCO and KPP
 +
|GCST
 +
|Chemistry, Specialty simulations
 +
|
 +
 
 +
|}
 +
 
 +
== Longer term (12-24 months)==
 +
 
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes
 +
 
 +
|-valign="top"
 +
|Implement isotope simulation for CO and CH4 in GCHP
 +
|Lee Murray (Rochester)
 +
|Specialty simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Migrate LETFK DA scheme to GCHP
 +
|Kazu Miyazaki (JPL)
 +
|Structural
 +
|
 +
 
 +
|-valign="top"
 +
|Super fast chemistry scheme
 +
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
 +
|Chemistry
 +
|
 +
*SF mechanism has been implemented and benchmarked in GEOS-Chem 12.0.0. This mechanism is of interest for those groups wanting fast global simulation of oxidation fields in GEOS-Chem simulations focused on aerosol microphysics.
 +
*The machine-learned chemical solver is still probably 12 months away from online implementation into GEOS-Chem.
 +
 
 +
|-valign="top"
 +
|Add non-volatile cations to ISORROPIA
 +
|Becky Alexander (UW)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|DMS oxidation scheme updating
 +
|Becky Alexander (UW)<br>Qianjie Chen (UW)
 +
|Chemistry
 +
|
 +
*Delayed - implemented pre-KPP
 +
*Currently bring implemented in KPP by UC Riverside group
 +
 
 +
|-valign="top"
 +
|Heterogeneous sulfate production
 +
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
 +
|Chemistry
 +
|
 +
*Delayed - implemented pre-KPP
 +
 
 +
|-valign="top"
 +
|Hg in WRF-GC
 +
|Yanxu Zhang (Nanjing)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Hg with blowing snow
 +
|Yanxu Xhang (Nanjing)
 +
|Emissions, Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Hg isotopes
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|Xiaotian Xu, Yanxu Xhang (Nanjing)
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|Hg simulation
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|Hg in CESM CAM-CHEM
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|Peng Zhang, Yanxu Xhang (Nanjing)
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|Hg simulation
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|Complex / multicomplex variables
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|Shannon Capps (Drexel)
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|Structural
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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''

Revision as of 14:58, 23 November 2021

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 Minor version in development
none yet GEOS-Chem 13.4.0

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
Fix bug in Henry law CALC_HEFF routine in hetchem computations Viral Shah (Harvard Chemistry Easy
Use degassing-only volcano emissions for benchmark simulations Christoph Keller (GMAO)
Daniel Jacob (Harvard)
Emissions &
Benchmarking
Easy
Updates to enable automated run directory creation Liam Bindle (GCST)
Melissa Sulprizio (GCST)
Run directory Medium
Upgrade Fast-JX to Cloud-J Lizzie Lundgren (GCST) Structural Difficult
Migrating sulfate chemistry into KPP Mike Long (GCST) Chemistry &
Structural
Difficult
  • Complete but needs validation & further testing
Updated Hg chemistry in KPP Viral Shah (Harvard)
Colin Thackray (Harvard)
Mike Long (Harvard)
Chemistry Medium
Add capability to use mass fluxes in advection Sebastian Eastham (MIT)
Liam Bindle (GCST)
Transport Easy
  • Identified as a priority for GC 13, but not yet delivered
  • GCHP only


Provide climatologies for open fire emissions Melissa Sulprizio (GCST) Emissions Easy
Climatologies for lightning NOx, biomass burning, and volcanoes Lee Murray (Rochester)
Melissa Sulprizio (GCST)
Emissions Easy
Add option for driving GEOS-Chem with native GEOS meteorological files Liam Bindle (GCST) Structural Easy
Change State_Chm%Species from 4D to vector of 3D arrays Lizzie Lundgren (GCST) Structural Medium

Feature integration in the queue

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

Feature Contributor(s) Model scope Ease of implementation Notes
MEGAN3 Sam Silva (MIT) Emissions Medium
Canopy Physics Model Sam Silva (MIT) Science Medium
Update surface resistance for ozone deposition to ice/snow Ryan Pound (York)
Shuting Zhai (UW)
Drydep Easy
Joint CO2-CO-CH4-OCS simulation Beata Bukosa (NIWA)
Kevin Bowman (JPL)
Specialty simulation Medium
Adaptive chemical solver (as option) Mike Long (Harvard)
Haipeng Lin (Harvard)
Chemistry Difficult
  • In testing
Output satellite diagnostics as NetCDF Eloise Marais (UCL) Diagnostics Easy


Feature integration not yet prioritized

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

Feature Contributor(s) Model scope Ease of implementation Notes
Stratospheric HCN chemistry Armin Kleinbohl (JPL)
Debra Weisenstein (Harvard, retired)
Chemistry Medium
  • Delivered to GCST (Jun 2020)
GC-YIBs biosphere-atmospheric chemistry coupled model Xu Yue (NUIST) Science Easy
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam(CUHK)
Amos Tai (CUHK)
Science Easy
Extend UCX into the mesosphere Sebastian Eastham (MIT)
Eric Fleming (NASA GMAO)
Chemistry Easy
Landcover/Fire Emissions Offline LPJlmfire Loretta Mickley (Harvard)
Yang Li (Harvard)
Emissions Easy
  • Data files delivered to GCST (July 2021)
Anthropogenic Methane Emission Inventory for Canada Tia Scarpelli (U. Edinburgh) Emissions Easy
Updated Global Inventory of Methane Emissions from Oil/Gas/Coal (GFEI v2) Tia Scarpelli (U. Edinburgh) Emissions Easy

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


Implement H2 chemistry in UCX Chris Holmes (FSU) Chemistry
  • Identified as a priority for GC 13, but not yet delivered


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

Over the horizon (6-12 months)

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

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


Integrating GMAO's tracer gridded component in GCHP Christoph Keller (NASA GMAO) Transport Tracer simulation
Streamlining of specialty simulations through HEMCO and KPP GCST Chemistry, Specialty simulations

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
Implement isotope simulation for CO and CH4 in GCHP Lee Murray (Rochester) Specialty simulation
Migrate LETFK DA scheme to GCHP Kazu Miyazaki (JPL) Structural
Super fast chemistry scheme Benjamin Brown-Steiner (AER)
Makoto Kelp (Harvard)
Chemistry
  • SF mechanism has been implemented and benchmarked in GEOS-Chem 12.0.0. This mechanism is of interest for those groups wanting fast global simulation of oxidation fields in GEOS-Chem simulations focused on aerosol microphysics.
  • The machine-learned chemical solver is still probably 12 months away from online implementation into GEOS-Chem.
Add non-volatile cations to ISORROPIA Becky Alexander (UW) Aerosols
DMS oxidation scheme updating Becky Alexander (UW)
Qianjie Chen (UW)
Chemistry
  • Delayed - implemented pre-KPP
  • Currently bring implemented in KPP by UC Riverside group
Heterogeneous sulfate production Lin Zhang (PKU)
Becky Alexander (UW)
Yuxuan Wang (U. Houston)
Chemistry
  • Delayed - implemented pre-KPP
Hg in WRF-GC Yanxu Zhang (Nanjing) Hg simulation
Hg with blowing snow Yanxu Xhang (Nanjing) Emissions, Hg simulation
Hg isotopes Xiaotian Xu, Yanxu Xhang (Nanjing) Hg simulation
Hg in CESM CAM-CHEM Peng Zhang, Yanxu Xhang (Nanjing) Hg simulation
Complex / multicomplex variables Shannon Capps (Drexel) Structural

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