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 ==
  
−
=== 12.3.0 ===
+
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#12.3.0|the ''GEOS-Chem 12'' wiki page]] for details.'''</span>
+
== Merged and awaiting release ==
  
−
=== 12.4.0 ===
+
See the links below for items merged and awaiting release.
  
−
The items listed below are slated to be included in GEOS-Chem 12.4.0. This is a feature release which will be validated with a 1-month benchmark simulation and a 1-year benchmark simulation.
+
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Patch version in development
 +
!width="200px"|Minor version in development
 +
 
 +
|-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"|Features affecting the full-chemistry simulation:
+
|[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"
−
|[[Grid-independent_emissions#Dust_emissions|Grid-independent dust emissions]] (hourly)
+
|Upgrade Fast-JX to Cloud-J
−
|David Ridley (CARB, formerly MIT)
+
|Lizzie Lundgren (GCST)
−
|Science
+
|Structural
 +
|Difficult
 
|
 
|
−
*Data delivered to GCST (Jan 2019)
+
*See [https://github.com/geoschem/cloud-j geoschem/cloud-j]
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions#Lightning_NOx_emissions|Grid-independent lightning NOx emissions]] (3-hourly)
+
|Migrating sulfate chemistry into KPP
−
|Lee Murray (Rochester)
+
|Mike Long (GCST)
−
|Science
+
|Chemistry &<br>Structural
 +
|Difficult
 
|
 
|
−
*Data delivered to GCST (Jan 2019)
+
*Complete but needs validation & further testing
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions#Biogenic_emissions|Grid-independent biogenic emissions]] (hourly)
+
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry in KPP]
−
|Jintai Lin (PKU)
+
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)<br>Mike Long (Harvard)
−
|Science
+
|Chemistry
 +
|Medium
 
|
 
|
−
*Data delivered to GCST (Jan 2019)
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions#Sea_salt_emissions|Grid-independent sea salt emissions]] (hourly)
+
|Add capability to use mass fluxes in advection
−
|Jintai Lin (PKU)
+
|Sebastian Eastham (MIT)
−
|Science
+
|Transport
 +
|Easy
 
|
 
|
−
*Data delivered to GCST (Jan 2019)
+
*Identified as a priority for GC 13, but not yet delivered
 +
*GCHP only
 +
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions#Soil_NOx_emissions|Grid-independent soil NOx emissions]] (hourly)
+
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
−
|Jintai Lin (PKU)
+
|Melissa Sulprizio (GCST)
−
|Science
+
|Emissions
 +
|Easy
 
|
 
|
−
*Data delivered to GCST (Jan 2019)
 
  
 +
|-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"
 +
|Change State_Chm%Species from 4D to vector of 3D arrays and point them to internal state in GCHP
 +
|Lizzie Lundgren (GCST)
 +
|Structural
 +
|Medium
 +
|
 
|}
 
|}
  
−
== Priorities not yet assigned to a particular version ==
+
== Feature integration in the queue ==
  
−
The following items have been identified as priorities for GEOS-Chem, but have not yet been assigned to a particular GEOS-Chem version.
+
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.
  
−
=== Ready to go in ===
+
{| 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"
 +
|Add PM10 diagnostic
 +
|Aerosols WG
 +
|Diagnostic
 +
|Easy
 +
|
 +
 
 +
|-valign="top"
 +
|[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"
 +
|[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
 +
 
 +
|}
 +
 
 +
== 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  
 
{| 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://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"
 
|-valign="top"
−
|[https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JD029133 N2O5, NO3, NO2 reactive uptake updates]
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
−
|Viral Shah (UW)<br>Lyatt Jaegle (UW)<br>Chris Holmes (FSU)<br>Erin McDuffie (Dalhousie)
+
|Sam Silva (MIT)
−
|Science
+
|Emissions
 +
|Medium
 
|
 
|
−
*Delivered to GCST (Dec 2018)
+
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR
  
 
|-valign="top"
 
|-valign="top"
−
|Cloud reactive uptake of NOx
+
|[https://acp.copernicus.org/articles/17/3699/2017/ GC-YIBs biosphere-atmospheric chemistry coupled model]
−
|Chris Holmes (FSU)
+
|Xu Yue (NUIST)
 
|Science
 
|Science
 +
|Easy
 
|
 
|
−
*Implemented in [[GEOS-Chem v11-01|v11-01]]
+
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/pull/32 Photolysis of NITs] (off by default)
+
|[http://acmg.seas.harvard.edu/presentations/IGC9/posters/Tue_Posters_lam_joey.pdf Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
|Tomas Sherwen (York)<br>Prasad Kasibhatla (Duke)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
 +
|Easy
 
|
 
|
−
*Delivered to GCST (Mar 2019)
+
*Delivered to GCST (Feb 2021)
 +
*See [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Emissions and surface fluxes updates
+
|[[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"
 
|-valign="top"
−
|MEIC emissions over China (2000-2017)
+
|Landcover/Fire Emissions Offline LPJlmfire
−
|Qiang Zhang (Tsinghua)<br>Lu Shen (Harvard)
+
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
−
|Science
+
|Emissions
 +
|Easy
 
|
 
|
−
*Available on a collaborative basis; contact developer [mailto:qiangzhang@tsinghua.edu.cn Qiang Zhang]
+
*Data files delivered to GCST (July 2021)
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to cold-temperature deposition
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
−
|Lyatt Jaegle (UW)
+
|Sam Silva (MIT)
 
|Science
 
|Science
 +
|Medium
 
|
 
|
 +
*Code is available at https://zenodo.org/record/3614062
 +
 +
|}
 +
 +
== 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
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes
 +
  
 
|-valign="top"
 
|-valign="top"
−
|Simple parameterization for CO2 dependence of stomatal resistance
+
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
−
|Amos Tai (CUHK)
+
|Chris Holmes (FSU)
−
|Science
+
|Chemistry
 
|
 
|
 +
*Identified as a priority for GC 13, but not yet delivered
  
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Wet deposition parameterizations: Henry's law coefficients, etc.
+
|[https://iopscience.iop.org/article/10.1088/1748-9326/ac16a3 New soil NOx parameterization]
−
|Sarah Safieddine (MIT)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
−
|Science
+
|Emissions
 
|
 
|
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
+
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
 +
|Hongjian Weng (PKU)
 +
|Emissions
 +
|
 +
*Identified as a priority for GC 13, but not yet delivered
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.atmos-chem-phys-discuss.net/acp-2018-459/ Update to hygroscopic growth]
+
|[[Grid-independent_emissions|Updated offline sea salt emissions]]
−
|Robyn Latimer (Dalhousie)<br>Randall Martin (Dalhousie)
+
|Hongjian Weng (PKU)
−
|Science
+
|Emissions
 
|
 
|
 +
*Identified as a priority for GC 13, but not yet delivered
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt emissions from sea ice
+
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
−
|Jiayue Huang (UW)
+
|Hongjian Weng (PKU)
−
|Science
+
|Emissions
 
|
 
|
 +
*Identified as a priority for GC 13, but not yet delivered
  
 
|-valign="top"
 
|-valign="top"
−
|Heterogeneous sulfate production
+
|Provide recommended rather than hard-coded scaling factors for online emissions
−
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|GCST
−
|Science
+
|Emissions
 
|
 
|
−
*Described by Shao et al., ACPD, 2019
+
*Identified as a priority for GC 13, but not yet developed
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
|Diagnostic to archive XCO2, XCO, and XCH4
 +
|Dylan Jones (Toronto)
 +
|Diagnostic
 +
|
  
 
|-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]]
+
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
−
|Katie Travis (MIT)
+
|Kazu Miyazaki (JPL)
−
|Science
+
|Input data
 
|
 
|
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
|BrC aging
 +
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
 +
|Chemistry
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
+
|Shared Socioeconomic Pathways Emission Inventories
−
|Beata Bukosa (Wollongong)<br>Dylan Jones (U. Toronto)
+
|Hong Liao (NUIST)
−
|Science
+
|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
 
|
 
|
  
 
|}
 
|}
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 13:13, 19 February 2019 (UTC)
+
== Over the horizon (6-12 months) ==
  
−
=== Almost there (< 6 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
−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.geosci-model-dev-discuss.net/gmd-2017-125/ GEOS resolution & subgrid convection]
+
|Methylethylketone chemistry
−
|Karen Yu (Harvard)<br>Bob Yantosca ([[GCST]])<br>Tailong He (Toronto)
+
|Jared Brewer (CSU)
−
|Science
+
|Chemistry
 
|
 
|
−
*Installed in 12.1.0 by Bob Yantosca (Harvard), currently being tested by Tailong He (Toronto)
 
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|New version of MAPL
+
|Add sulfate dependence to SOA yield from isoprene in simple SOA
−
|GMAO<br>Lizzie Lundgren (GCST)
+
|Eloise Marais (Leicester)
−
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Use CMake to simplify GCHP build process
+
|GTMM updates
−
|Liam Bindle (Dalhousie)
+
|Ben Geyman (Harvard)
−
|Structural
+
|Hg simulation
 
|
 
|
  
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[FlexGrid|FlexGrid Stage 2: Enable nested simulations over any custom domains]]
+
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
−
|Jiawei Zhuang (Harvard)<br>Melissa Sulprizio ([[GCST]])
+
|Christoph Keller (NASA GMAO)
−
|Structural
+
|Transport Tracer simulation
 
|
 
|
  
 
|-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]]
+
|Streamlining of specialty simulations through HEMCO and KPP
−
|[[GCST]]
+
|GCST
−
|Structural
+
|Chemistry, Specialty simulations
 
|
 
|
−
*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)
+
== Longer term (12-24 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 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"
−
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
+
|Implement isotope simulation for CO and CH4 in GCHP
−
|Amos Tai (CUHK)
+
|Lee Murray (Rochester)
−
|Science
+
|Specialty simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Additional modifications for [[FlexChem]], including:
+
|Migrate LETFK DA scheme to GCHP
−
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Kazu Miyazaki (JPL)
−
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
−
|[[GCST]]
+
 
|Structural
 
|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"
 +
|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.
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 13:13, 19 February 2019 (UTC)
+
|-valign="top"
 +
|Add non-volatile cations to ISORROPIA
 +
|Becky Alexander (UW)
 +
|Aerosols
 +
|
  
−
=== Longer term (12-24 months)===
+
|-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
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|- bgcolor="#cccccc"
+
|Heterogeneous sulfate production
−
!width="500px"|Item
+
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
−
!width="200px"|Author(s)
+
|Chemistry
−
!width="100px"|Type
+
|
−
!width="300px"|Status
+
*Delayed - implemented pre-KPP
  
 
|-valign="top"
 
|-valign="top"
−
|None at this time
+
|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

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
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

GEOS-Chem Main Page | GCHP Main Page

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