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

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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.
+
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
  
We also invite you to view our [https://trello.com/board/geos-chem-support-team/4fe36668fc79a1d3540ba80b GEOS-Chem Support Team project management board on Trello.com], which shows the current GCST workflow.
+
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]].
  
== Priorities assigned to upcoming GEOS-Chem versions ==
+
== Release schedule ==
  
=== 12.4.0 ===
+
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.  
  
<span style="color:darkorange">'''This version is currently in development. See [[GEOS-Chem_12#12.4.0|the ''GEOS-Chem 12'' wiki page]] for details.'''</span>
+
== Merged and awaiting release ==
  
== Priorities not yet assigned to a particular version ==
+
See the links below for items merged and awaiting release.
  
The following items have been identified as priorities for GEOS-Chem, but have not yet been assigned to a particular GEOS-Chem version.
+
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Patch version in development
 +
!width="200px"|Minor version in development
  
=== Ready to go in ===
+
|-valign="top"
 +
|align="center"|'''[[GEOS-Chem 13.3.1]]'''
 +
|align="center"|'''[[GEOS-Chem 13.3.0]]'''
 +
 
 +
|}
 +
 
 +
== 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  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
!width="500px"|Feature
+
!width="200px"|Feature
!width="200px"|Submitted by
+
!width="200px"|Contributor(s)
!width="100px"|Type
+
!width="100px"|Model scope
!width="300px"|Status
+
!width="100px"|Ease of implementation
 +
!width="300px"|Notes
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
+
|[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"
 
|-valign="top"
|[https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JD029133 N2O5, NO3, NO2 reactive uptake updates]
+
|Upgrade Fast-JX to Cloud-J
|Viral Shah (UW)<br>Lyatt Jaegle (UW)<br>Chris Holmes (FSU)<br>Erin McDuffie (Dalhousie)
+
|Lizzie Lundgren (GCST)
|Science
+
|Structural
 +
|Difficult
 
|
 
|
*Delivered to GCST (Dec 2018)
+
*See [https://github.com/geoschem/cloud-j geoschem/cloud-j]
  
 
|-valign="top"
 
|-valign="top"
|Cloud reactive uptake of NOx
+
|Migrating sulfate chemistry into KPP
|Chris Holmes (FSU)
+
|Mike Long (GCST)
|Science
+
|Chemistry &<br>Structural
 +
|Difficult
 
|
 
|
*Implemented in [[GEOS-Chem v11-01|v11-01]]
+
*Complete but needs validation & further testing
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/32 Photolysis of NITs] (off by default)
+
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry in KPP]
|Tomas Sherwen (York)<br>Prasad Kasibhatla (Duke)
+
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)<br>Mike Long (Harvard)
|Science
+
|Chemistry
 +
|Medium
 
|
 
|
*Delivered to GCST (Mar 2019)
 
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Emissions and surface fluxes updates
+
|Add capability to use mass fluxes in advection
 +
|Sebastian Eastham (MIT)
 +
|Transport
 +
|Easy
 +
|
 +
*Identified as a priority for GC 13, but not yet delivered
 +
*GCHP only
 +
 
  
 
|-valign="top"
 
|-valign="top"
|MEIC emissions over China (2000-2017)
+
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
|Qiang Zhang (Tsinghua)<br>Lu Shen (Harvard)
+
|Melissa Sulprizio (GCST)
|Science
+
|Emissions
 +
|Easy
 
|
 
|
*Available on a collaborative basis; contact developer [mailto:qiangzhang@tsinghua.edu.cn Qiang Zhang]
 
  
 
|-valign="top"
 
|-valign="top"
|Updates to cold-temperature deposition
+
|[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]
|Lyatt Jaegle (UW)
+
|Lee Murray (Rochester)<br>Melissa Sulprizio (GCST)
|Science
+
|Emissions
 +
|Easy
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Simple parameterization for CO2 dependence of stomatal resistance
+
|[https://github.com/geoschem/geos-chem/pull/945 Add option for driving GEOS-Chem with native GEOS meteorological files]
|Amos Tai (CUHK)
+
|Liam Bindle (GCST)
|Science
+
|Structural
 +
|Easy
 
|
 
|
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
+
|Change State_Chm%Species from 4D to vector of 3D arrays and point them to internal state in GCHP
 +
|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"
 
|-valign="top"
|Wet deposition parameterizations: Henry's law coefficients, etc.
+
|Add PM10 diagnostic
|Sarah Safieddine (MIT)
+
|Aerosols WG
|Science
+
|Diagnostic
 +
|Easy
 
|
 
|
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
+
|[https://acp.copernicus.org/articles/21/1861/2021/ Updated Rn-222 emissions]
 +
|Bo Zhang
 +
|Emissions
 +
|Easy
 +
|
 +
*Existing Rn emissions will remain as an option
 +
*Submitted code updates built on v11-02f
 +
*Original data at https://doi.org/10.5281/zenodo.3942287
  
 
|-valign="top"
 
|-valign="top"
|[https://www.atmos-chem-phys-discuss.net/acp-2018-459/ Update to hygroscopic growth]
+
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
|Robyn Latimer (Dalhousie)<br>Randall Martin (Dalhousie)
+
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
|Science
+
|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"
 
|-valign="top"
|Sea salt emissions from sea ice
+
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
|Jiayue Huang (UW)
+
|Mike Long (Harvard) <br> Haipeng Lin (Harvard)
|Science
+
|Chemistry
 +
|Difficult
 
|
 
|
 +
*In testing
 +
 +
|}
 +
 +
== 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"
 
|-valign="top"
|Heterogeneous sulfate production
+
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
|Science
+
|Chemistry
 +
|Medium
 
|
 
|
*Described by Shao et al., ACPD, 2019
+
*Delivered to GCST (Jun 2020)
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
|[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
  
 
|-valign="top"
 
|-valign="top"
|[Chemistry_Issues#Correcting_ozone_from_the_height_of_the_lowest_model_level_to_the_surface|ND49 timeseries diagnostic for correcting ozone from the height of the lowest model level to 10m]]
+
|[https://acp.copernicus.org/articles/17/3699/2017/ GC-YIBs biosphere-atmospheric chemistry coupled model]
|Katie Travis (MIT)
+
|Xu Yue (NUIST)
 
|Science
 
|Science
 +
|Easy
 
|
 
|
 +
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
|[http://acmg.seas.harvard.edu/presentations/IGC9/posters/Tue_Posters_lam_joey.pdf 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"
 
|-valign="top"
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Beata Bukosa (Wollongong)<br>Dylan Jones (U. Toronto)
+
|Sam Silva (MIT)
 
|Science
 
|Science
 +
|Medium
 
|
 
|
 +
*Code is available at https://zenodo.org/record/3614062
  
 
|}
 
|}
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 13:13, 19 February 2019 (UTC)
+
== Almost there (< 6 months) ==
  
=== 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"
!width="500px"|Item
+
!width="200px"|Feature
!width="200px"|Author(s)
+
!width="200px"|Contributor(s)
!width="100px"|Type
+
!width="100px"|Model scope
!width="300px"|Status
+
!width="420px"|Notes
  
|-
 
!colspan="4" bgcolor="#CCFFFF"|Transport updates
 
  
 
|-valign="top"
 
|-valign="top"
|[https://www.geosci-model-dev-discuss.net/gmd-2017-125/ GEOS resolution & subgrid convection]
+
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
|Karen Yu (Harvard)<br>Bob Yantosca ([[GCST]])<br>Tailong He (Toronto)
+
|Chris Holmes (FSU)
|Science
+
|Chemistry
 
|
 
|
*Installed in 12.1.0 by Bob Yantosca (Harvard), currently being tested by Tailong He (Toronto)
+
*Identified as a priority for GC 13, but not yet delivered
  
|-
 
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
 
  
 
|-valign="top"
 
|-valign="top"
|New version of MAPL
+
|[https://iopscience.iop.org/article/10.1088/1748-9326/ac16a3 New soil NOx parameterization]
|GMAO<br>Lizzie Lundgren (GCST)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Structural
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Use CMake to simplify GCHP and GEOS-Chem "Classic" build process
+
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
|Liam Bindle (Dalhousie)
+
|Hongjian Weng (PKU)
|Structural
+
|Emissions
 
|
 
|
*In progress
+
*Identified as a priority for GC 13, but not yet delivered
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
|[[Grid-independent_emissions|Updated offline sea salt emissions]]
 +
|Hongjian Weng (PKU)
 +
|Emissions
 +
|
 +
*Identified as a priority for GC 13, but not yet delivered
  
 
|-valign="top"
 
|-valign="top"
|[[FlexGrid|FlexGrid Stage 2: Enable nested simulations over any custom domains]]
+
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
|Jiawei Zhuang (Harvard)<br>Melissa Sulprizio ([[GCST]])
+
|Hongjian Weng (PKU)
|Structural
+
|Emissions
 
|
 
|
 +
*Identified as a priority for GC 13, but not yet delivered
  
 
|-valign="top"
 
|-valign="top"
|[[GEOS-Chem_12#Replace_HEMCO_built-in_unit_conversions_with_scale_factors_in_config_file|Replace HEMCO built-in unit conversions with scale factors in config file]]
+
|Provide recommended rather than hard-coded scaling factors for online emissions
|[[GCST]]
+
|GCST
|Structural
+
|Emissions
 +
|
 +
*Identified as a priority for GC 13, but not yet developed
 +
 
 +
|-valign="top"
 +
|Diagnostic to archive XCO2, XCO, and XCH4
 +
|Dylan Jones (Toronto)
 +
|Diagnostic
 +
|
 +
 
 +
|-valign="top"
 +
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
 +
|Kazu Miyazaki (JPL)
 +
|Input data
 +
|
 +
 
 +
|-valign="top"
 +
|BrC aging
 +
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Shared Socioeconomic Pathways Emission Inventories
 +
|Hong Liao (NUIST)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Rediagnosis of RAS convection in GEOS-Chem
 +
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
 +
|Convection
 +
|
 +
*Work is finished and a manuscript is in preparation.
 +
 
 +
|-valign="top"
 +
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
 +
|Sebastian Eastham (MIT)
 +
|Transport
 +
|
 +
*Identified as a priority for GC 13, but not yet delivered
 +
*GCHP only
 +
 
 +
|-valign="top"
 +
|HTAPv3 emissions (0.1 deg, 2002-2018)
 +
|Emissions & Deposition WG
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
 +
|GCST
 +
|Chemistry
 
|
 
|
*Differences in precision and order of operations may result in small number differences
 
  
 
|}
 
|}
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 13:13, 19 February 2019 (UTC)
+
== Over the horizon (6-12 months) ==
  
=== Over the horizon (6-12 months) ===
+
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
!width="500px"|Item
+
!width="200px"|Feature
!width="200px"|Author(s)
+
!width="200px"|Contributor(s)
!width="100px"|Type
+
!width="100px"|Model scope
!width="300px"|Status
+
!width="420px"|Notes
  
 
|-valign="top"
 
|-valign="top"
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
+
|Methylethylketone chemistry
|Amos Tai (CUHK)
+
|Jared Brewer (CSU)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Additional modifications for [[FlexChem]], including:
+
|Add sulfate dependence to SOA yield from isoprene in simple SOA
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Eloise Marais (Leicester)
|[[GCST]]
+
|Chemistry
|Structural
+
 
|
 
|
*Mike Long, who was the principal proponent behind these updates, has since left the GC community.
 
*We are not sure who will take this over
 
  
|}
+
|-valign="top"
 +
|GTMM updates
 +
|Ben Geyman (Harvard)
 +
|Hg simulation
 +
|
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 13:13, 19 February 2019 (UTC)
 
  
=== Longer term (12-24 months)===
+
|-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
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
!width="500px"|Item
+
!width="200px"|Feature
!width="200px"|Author(s)
+
!width="200px"|Contributor(s)
!width="100px"|Type
+
!width="100px"|Model scope
!width="300px"|Status
+
!width="420px"|Notes
  
 
|-valign="top"
 
|-valign="top"
|None at this time
+
|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
 +
|Xiaotian Xu, Yanxu Xhang (Nanjing)
 +
|Hg simulation
 +
|
 +
 +
|-valign="top"
 +
|Hg in CESM CAM-CHEM
 +
|Peng Zhang, Yanxu Xhang (Nanjing)
 +
|Hg simulation
 +
|
 +
 +
|-valign="top"
 +
|Complex / multicomplex variables
 +
|Shannon Capps (Drexel)
 +
|Structural
 
|
 
|
  
 
|}
 
|}
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 13:13, 19 February 2019 (UTC)
+
----------------
 +
 
 +
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''

Revision as of 14:02, 21 October 2021

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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
GEOS-Chem 13.3.1 GEOS-Chem 13.3.0

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
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) 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 and point them to internal state in GCHP 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
Add PM10 diagnostic Aerosols WG Diagnostic Easy
Updated Rn-222 emissions Bo Zhang Emissions 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

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)
MEGAN3 Sam Silva (MIT) Emissions Medium
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)
Canopy Physics Model Sam Silva (MIT) Science Medium

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) 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

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 (Leicester) 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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