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

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This is a list of planned GEOS-Chem model development items over the next two years, based on discussions and  [http://acmg.seas.harvard.edu/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://acmg.seas.harvard.edu/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]].
  
== Items that are now included in GEOS-Chem ==  
+
== 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"|TBD
 +
|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
 +
|-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/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)
 +
|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"
 +
|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"
 +
|[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
 +
|-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/13/2569/2020/ MEGAN3]
 +
|Sam Silva (MIT)
 +
|Emissions
 +
|Medium
 +
|
 +
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR
 +
 
 +
|-valign="top"
 +
|[https://acp.copernicus.org/articles/17/3699/2017/ 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"
 +
|[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"
 +
|Archived CMIP6 Met Products for GEOS-Chem Input
 +
|Lee Murray (Rochester)
 +
|Input data
 +
|Easy
 +
|
 +
*See updates from [http://acmg.seas.harvard.edu/geos/word_pdf_docs/steering_cmte/gc_sc_minutes_24Feb2021.pdf Feb 2021 GCSC meeting]
 +
*Official announcement coming soon
 +
 
 +
|-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"
 +
|[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
 +
 
 +
|}
 +
 
 +
== 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)
!Completion Date
+
!width="100px"|Model scope
|-
+
!width="420px"|Notes
|Improved BL mixing scheme
+
 
|Jintai Lin
+
 
|Now included in [[GEOS-Chem v8-02-02]]; released 08 Jun 2009
+
|-valign="top"
|-
+
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
|BC/OC aerosol emissions from Bond inventory
+
|Chris Holmes (FSU)
|Eric Leibensperger
+
|Chemistry
|Now included in [[GEOS-Chem v8-02-02]]; released 08 Jun 2009
+
|
|-
+
*Identified as a priority for GC 13, but not yet delivered
|Chemical updates
+
 
|Mat Evans<br>Fabien Paulot<br>Jingqiu Mao<br>Paul Palmer
+
 
|Updated chemical mechanism and photolysis files<br><tt>globchem.dat</tt>, <tt>jv_spec.dat</tt>, <tt>ratj.d</tt><br>(see [http://www.as.harvard.edu/ctm/geos/wiki_docs/chemistry/chemistry_updates_v4.pdf documentation])<br>Now included in [[GEOS-Chem v8-02-01]]; released 26 May 2009
+
|-valign="top"
|-
+
|[https://iopscience.iop.org/article/10.1088/1748-9326/ac16a3 New soil NOx parameterization]
|Common model adjoint and documentation
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Daven Henze<br>Kumaresh Singh<br>Monika Kopacz
+
|Emissions
|Code merging session took place June 6-9, 2009 @ Virginia Tech<br>
+
|
*Merged 3 branches of adjoint
+
 
*Forward model now based on v8-02-01 (w/ GEOS-5)
+
|-valign="top"
*Input files cleaned up and standardized
+
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
*New makefiles; code separated into subdirectories
+
|Hongjian Weng (PKU)
*New CVS repository @ U. Colorado for code access
+
|Emissions
*Some minor cleanup may still be needed (as of June 2009)
+
|
 +
*Identified as a priority for GC 13, but not yet delivered
 +
*Waiting on updated MODIS LAI data
 +
 
 +
|-valign="top"
 +
|[[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"
 +
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
 +
|Hongjian Weng (PKU)
 +
|Emissions
 +
|
 +
*Identified as a priority for GC 13, but not yet delivered
 +
 
 +
|-valign="top"
 +
|Provide recommended rather than hard-coded scaling factors for online emissions
 +
|GCST
 +
|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
 +
|
 +
 
 +
|-valign="top"
 +
|Make species conc pointers to 3D arrays; point them to MAPL internal state in GCHP
 +
|Lizzie Lundgren (GCST)<br>Christoph Keller (GMAO)
 +
|Structural<br>GCHP
 +
|
 +
*Will reduce memory requirement for high resolution runs
 +
 
 
|}
 
|}
  
--[[User:Bmy|Bob Y.]] 14:08, 15 June 2009 (EDT)
+
== Over the horizon (6-12 months) ==
  
== Items that have yet to be included in GEOS-Chem ==
+
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"
!Item
+
!width="200px"|Feature
!Author(s)
+
!width="200px"|Contributor(s)
!Status
+
!width="100px"|Model scope
|-
+
!width="420px"|Notes
|Local stratospheric ozone column from GEOS-5
+
 
|GEOS-Chem Support Team
+
|-valign="top"
|Mature, will be released in G-C v8-02-03
+
|Methylethylketone chemistry
|-
+
|Jared Brewer (CSU)
|KPP chemical solver
+
|Chemistry
|Kumaresh Singh
+
|
|Mature, will be released in G-C v8-02-03
+
 
|-
+
|-valign="top"
|Sectional aerosol
+
|Add sulfate dependence to SOA yield from isoprene in simple SOA
|Fangqun Yu (APM)<br>Peter Adams (TOMAS)
+
|Eloise Marais (Leicester)
|Win T. & G-C support team shall install TOMAS into G-C
+
|Chemistry
|-
+
|
|Linoz stratospheric ozone
+
 
|Dylan Jones
+
|-valign="top"
|Code has been delivered to G-C support team
+
|GTMM updates
|-
+
|Ben Geyman (Harvard)
|Methane including tagged tracers
+
|Hg simulation
|Kevin Wecht
+
|
|Code is being cleaned up & tested
+
 
|-
+
 
|CO2 including tagged tracers
+
|-valign="top"
|Ray Nassar
+
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
|Waiting upon delivery to G-C support team
+
|Christoph Keller (NASA GMAO)
|-
+
|Transport Tracer simulation
|Anthropogenic VOCs update
+
|
|Dylan Millet<br>
+
 
|Need new MEGAN emission from terpenes
+
|-valign="top"
|-
+
|Streamlining of specialty simulations through HEMCO and KPP
|COADS ship emissions
+
|GCST
|Chulkyu Lee
+
|Chemistry, Specialty simulations
|Updates have been transferred to G-C support team; will be included in code soon
+
|
|-
+
 
|Update aerosol optical properties
+
|Colette Heald<br>Randall Martin<br>and the Aerosols Working Group
+
|Randall Martin will create "master list"<br>of aerosol optical properties
+
|-
+
|Addition of aromatics to SOA simulation
+
|Daven Henze
+
|to be added in short order following v8-02-01 release
+
|-
+
|Archive tropospheric OH fields from benchmark runs
+
|GEOS-Chem Support Team
+
|&nbsp;
+
|-
+
|Flexible region mask for tagged tracers
+
|Dylan Jones<br>Prasad Kasibhatla
+
|&nbsp;
+
|-
+
|Updated strat chem. from GMI Combo
+
|Dylan Jones
+
|&nbsp;
+
|-
+
|Acquire long-term MERRA archive
+
|GEOS-Chem Support Team
+
|&nbsp;
+
|-
+
|Convert model output to NetCDF
+
|GEOS-Chem Support Team
+
|&nbsp;
+
|-
+
|Global 1x1.25 model capability
+
|Lok Lamsal
+
|&nbsp;
+
|-
+
|Aerosol data sets for benchmarking
+
|Colette Heald
+
|&nbsp;
+
|-
+
|Data servers for chemistry/climate databases
+
|Loretta Mickley
+
|&nbsp;
+
|-
+
|GFED3 biomass burning
+
|Prasad Kasibhatla
+
|&nbsp;
+
|-
+
|Updated aircraft emissions
+
|Lee Murray
+
|&nbsp;
+
|-
+
|Interannual lightning
+
|Lee Murray
+
|&nbsp;
+
|-
+
|ISORROPIA II
+
|Havala Pye<br>Thanos Nenes<br>Becky Alexander
+
|&nbsp;
+
|-
+
|Fire injection heights
+
|Maria Val Martin
+
|&nbsp;
+
|-
+
|CCSM3 interface
+
|Rokjin Park
+
|&nbsp;
+
|-
+
|Soil NOx emission
+
|Randall Martin<br>Rynda Hudman
+
|&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 [[GEOS-Chem column code|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.]] 14:03, 15 June 2009 (EDT)
+
== 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"
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|Hg isotopes
 +
|Xiaotian Xu, Yanxu Xhang (Nanjing)
 +
|Hg simulation
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|Hg in CESM CAM-CHEM
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|Peng Zhang, Yanxu Xhang (Nanjing)
 +
|Hg simulation
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|
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|-valign="top"
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|Complex / multicomplex variables
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|Shannon Capps (Drexel)
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|Structural
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|
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|}
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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''

Revision as of 14:17, 14 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
TBD 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
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
Archived CMIP6 Met Products for GEOS-Chem Input Lee Murray (Rochester) Input data 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
  • Waiting on updated MODIS LAI data
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
Make species conc pointers to 3D arrays; point them to MAPL internal state in GCHP Lizzie Lundgren (GCST)
Christoph Keller (GMAO)
Structural
GCHP
  • Will reduce memory requirement for high resolution runs

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