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 was compiled by the user Working Groups at the last [http://acmg.seas.harvard.edu/geos/meetings/2017/index.html International GEOS-Chem Meeting (IGC8)] in May 2017 and will be continuously updated based on code readiness and input from the Working Groups and the Steering Committee.
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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
  
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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.
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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 [https://geos-chem.seas.harvard.edu/geos-working-groups Working Groups] and the [https://geos-chem.seas.harvard.edu/geos-steering-cmte Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
  
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== List of priorities as of May 2017 ==
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== Release schedule ==
  
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The items listed below are in different stages of readiness and will be included in future versions of the model.
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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.  
  
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=== Awaiting release ===
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== Merged and awaiting release ==
  
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Items awaiting release will be part of the next version release of GEOS-Chem and are actively being incorporated into the standard model and benchmarked. More information on those items can be obtained on the [[GEOS-Chem v11-02]] wiki page.
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See the links below for items merged and awaiting release.
  
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{| border=1 cellspacing=0 cellpadding=5
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{| border=1 cellspacing=0 cellpadding=5  
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|- bgcolor="#cccccc"
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|-bgcolor="#CCCCCC"
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!width="400px"|Item
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!width="200px"|Patch version in development
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!width="300px"|Author(s)
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!width="200px"|Major version in development
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!width="400px"|Status
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|- bgcolor="#ccffff"
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!colspan="3"|Science updates
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|-valign="top"
 
|-valign="top"
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|[[Updates_in_JPL_Publication_15-10|Updating chemistry rate constants based on ''JPL Publication 15-10'']]
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|align="center"| -
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|Barron Henderson (U. Florida)<br>Mat Evans (U. York)<br>[[Chemistry Issues|Oxidants and Chemistry WG]]
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|align="center"|'''[[GEOS-Chem 14.0.0]]'''
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|
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*Included in [[GEOS-Chem v11-02#v11-02a|v11-02a]] (Approved 12 May 2017)
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|-valign="top"
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|}
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|[[PAN|PAN updates ]], including:
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*Updates to emissions, deposition, species, chemistry
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*Ocean+biogenic ALD2 emissions from Millet al. [2010]
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−
|Emily Fischer (CSU)
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−
|
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*Included in [[GEOS-Chem v11-02#v11-02a|v11-02a]] (Approved 12 May 2017)
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|-valign="top"
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== Feature integration in progress ==
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|[[EPA/NEI11_North_American_emissions#Monthly_mean_emissions|Monthly mean NEI2011 emissions]]
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|[[GCST]]<br>Katie Travis (Harvard)
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−
|
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*Included in [[GEOS-Chem v11-02#v11-02a|v11-02a]] (Approved 12 May 2017)
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|-valign="top"
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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.
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|Enhance default GEOS-Chem simple SOA
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−
|Sal Farina (Colorado State)<br>Aerosol Working Group Chairs
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−
|
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*Included in [[GEOS-Chem v11-02#v11-02c|v11-02c]] (Approved 21 Sep 2017)
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|-valign="top"
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{| border=1 cellspacing=0 cellpadding=5
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|Updates to isoprene chemistry, includes:
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|-bgcolor="#CCCCCC"
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*Fast photolysis of carbonyl nitrates
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!width="200px"|Feature
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*Aerosol uptake of organic nitrates
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!width="200px"|Contributor(s)
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*Updated organic deposition
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!width="100px"|Model scope
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*Remove dependence of species drydep on HNO3 drydep
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!width="100px"|Ease of implementation
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|Jenny Fisher (U. Wollongong)<br>Elo&iuml;se Marais (Harvard)<br>Katie Travis (Harvard)<br>Kelvin Bates (Caltech)<br>Rebecca Schwantes(Caltech)
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!width="300px"|Notes and References
−
|
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*Included in [[GEOS-Chem v11-02#v11-02c|v11-02c]] (Approved 21 Sep 2017)
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|-valign="top"
 
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|[http://acmg.seas.harvard.edu/publications/2016/Marais_SEUS_isopSOA_ACP_2016.pdf Add aqueous isoprene uptake to SOA scheme]
 
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|Eloise Marais (Harvard)
 
−
|
 
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*Included in [[GEOS-Chem v11-02#v11-02c|v11-02c]] (Approved 21 Sep 2017)
 
  
 
|-valign="top"
 
|-valign="top"
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|[[Chemistry_Issues#Fixes_for_carbon_creating_reactions|Carbon balance (fix C creation)]]
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|TOMAS in GCHP
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|Sarah Safieddine (MIT)
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|Betty Croft (WashU)
 +
|Aerosols
 +
|Simple
 
|
 
|
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*Included in [[GEOS-Chem v11-02#v11-02c|v11-02c]] (Approved 21 Sep 2017)
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*[https://github.com/geoschem/GCHP/pull/221 geoschem/GCHP PR #221]
−
 
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*[https://github.com/geoschem/geos-chem/pull/1261 geoschem/geos-chem PR #1261]
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|-bgcolor="#ccffff" valign="top"
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*[https://github.com/geoschem/HEMCO/pull/145 geoschem/HEMCO PR #145]
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!colspan="3"|Structural/programming updates
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|-valign="top"
 
|-valign="top"
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|[[GEOS-Chem HP|Source code updates for high performance option (GCHP)]]
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|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option) / KPP 3.0.0
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|Seb Eastham (Harvard)<br>Lizzie Lundgren (Harvard)<br>Mike Long (Harvard)<br>Jiawei Zhuang (Harvard)<br>Bob Yantosca (Harvard)
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|Mike Long (Harvard) <br> Haipeng Lin (Harvard) <br> Bob Yantosca (GCST) <br> Lu Shen (PKU)
 +
|Chemistry
 +
|Complicated
 
|
 
|
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*Included in [[GEOS-Chem v11-02#v11-02b|v11-02b]] (Approved 16 Jun 2017)
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*Lin, H., M.S. Long, R. Sander, R.M. Yantosca, L.A. Estrada, L. Shen, and D.J. Jacob, An adaptive auto-reduction solver for speeding up integration of chemical kinetics in atmospheric chemistry models: implementation and evaluation in the Kinetic Pre-Processor (KPP) version 3.0.0, submitted to JAMES,  https://doi.org/10.31223/X5505V, 2022.
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+
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|}
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−
 
+
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=== Ready to go in ===
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−
 
+
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==== Slated for inclusion in v11-02 ====
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−
 
+
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The following items were prioritized for inclusion in [[GEOS-Chem v11-02]].
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−
 
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{| border=1 cellspacing=0 cellpadding=5
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|- bgcolor="#cccccc"
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−
!width="400px"|Item
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!width="250px"|Author(s)
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!width="80px"|Type
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!width="250px"|Status
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−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
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−
 
+
 
|-valign="top"
 
|-valign="top"
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|[[Chemistry_Issues#Script_for_evaluating_carbon_balance|Script for checking N, C, etc. balance in chemistry mechanism]]
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|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation via KPP]
−
|Barron Henderson (EPA)
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|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)<br>Mike Long (Harvard)
−
|Software
+
|Specialty simulation
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
  
 
|-valign="top"
 
|-valign="top"
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|[http://www.atmos-chem-phys.net/16/12239/2016/ Halogen chemistry updates]
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|RO2 diagnostic
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|Tom&aacute;s Sherwen (York)<br>Johan Schmidt (Harvard)<br>Seb Eastham (MIT)<br>Lei Zhu (Harvard)<br>[[Chemistry Issues|Oxidants and Chemistry WG]]
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|Melissa Sulprizio (Harvard)
−
|Science
+
|Diagnostics
 +
|Simple
 
|
 
|
−
*Delivered to GCST (Jun 2017)
 
−
*Slated for [[GEOS-Chem v11-02#v11-02d|v11-02d]]
 
  
 
|-valign="top"
 
|-valign="top"
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|[http://onlinelibrary.wiley.com/doi/10.1002/2017GL073812/abstract Sulfur oxidation by reactive halogens]
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|[https://github.com/geoschem/geos-chem/issues/770 Output satellite diagnostics as NetCDF]
−
|Qianjie Chen (UW)
+
|Eloise Marais (UCL)  
−
|Science
+
|Diagnostics
 +
|Simple
 
|
 
|
−
*Delivered to GCST (Oct 2017)
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*See [https://github.com/geoschem/geos-chem/pull/1134 geoschem/geos-chem #1134]
−
*Slated for [[GEOS-Chem v11-02#v11-02d|v11-02d]]
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−
*Implement as part of halogen chemistry
+
  
 
|-valign="top"
 
|-valign="top"
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|[[Aerosol_optical_properties#Add_BC_absorption_enhancement_factor|Update density of BC to 1.8 and add absorption enhancement factor in input.geos]]
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|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
−
|Xuan Wang (MIT)
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|Emissions
 +
|Simple
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2016)
 
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[NOx-Ox-HC-aerosol#Monthly mean surface distributions|Monthly mean surface methane distributions]]
+
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx]
−
|Lee Murray (NASA GISS/LDEO)
+
|Lee Murray (Rochester)
−
|Science
+
|Emissions
 +
|Simple
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2017)
 
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[UCX_chemistry_mechanism#v11-02|Remove initial stratospheric 2D mixing ratio option]]
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|[https://github.com/geoschem/geos-chem/discussions/1022 Add new species concentration diagnostic in units of molec/cm3]
−
|Seb Eastham (Harvard)
+
|Haipeng Lin (Harvard)
−
|Science
+
|Diagnostics
 +
|Simple
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
+
*See [https://github.com/geoschem/geos-chem/pull/1264 geoschem/geos-chem PR #1264]
  
 
|-valign="top"
 
|-valign="top"
−
|[[UCX_chemistry_mechanism#UCX_stratospheric_water_boundary_condition_update|UCX stratospheric water boundary condition update]]
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|Identify and remove memory leaks and similar issues
−
|Chris Holmes (UC Irvine)<br>Seb Eastham (Harvard)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Structural
 +
|Medium
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
+
*See [https://github.com/geoschem/geos-chem/pull/1353 github.com/geos-chem PR #1353]
−
*Delivered to GCST (Jan 2017)
+
  
 
|-valign="top"
 
|-valign="top"
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|[[Stratospheric_chemistry#Prod.2Floss_rates_from_UCX|Use monthly mean stratospheric prod/loss rates from UCX simulation for all species]]
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|Update transport tracer simulation for consistency with the tracer gridded component in GEOS
−
|[[GCST]]
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|TransportTracer simulation
 +
|Simple
 
|
 
|
−
*Delivered to GCST (Nov 2017)
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Metal_catalyzed_oxidation_of_SO2|Metal catalyzed oxidation of SO2]] (as a switch)
+
|Bug fix for GFAS in GCHP
−
|Viral Shah (UW)<br>Becky Alexander (UW)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
 +
|Simple
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Particulate_matter_in_GEOS-Chem#Option_to_include_spatially_and_seasonally_varying_OM.2FOC|Spatially varying OM/OC]]
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|Use pointers to internal state for species arrays in GCHP/GEOS
−
|Sajeev Philip (Dalhousie/NASA Ames)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP/GEOS
 +
|Medium
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
 
−
*Delivered to GCST (May 2017)
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Chemistry_Issues#Correcting_ozone_from_the_height_of_the_lowest_model_level_to_the_surface|Diagnostic for correcting ozone from the height of the lowest model level to the surface]]
+
|[https://github.com/geoschem/geos-chem/issues/1274 Revision to a rate constant for the C2H4 scheme]
−
|Structural
+
|Kelvin Bates (Harvard)
−
|Katie Travis (MIT)
+
|Chemistry
 +
|Easy
 
|
 
|
−
*Delivered to GCST (Nov 2017)
 
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Transport updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|GEOS resolution & subgrid convection
+
|[https://github.com/geoschem/geos-chem/issues/1298 Fix product in HOBr/Cl + S(IV) reactions]
−
|Karen Yu (Harvard)
+
|Xuan Wang (CUHK)
−
|Science
+
|Chemistry
 +
|Easy
 
|
 
|
−
*Delivered to GCST (Oct 2017)
 
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Emission updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Global_0.25x0.25_MEGAN_input_and_MODIS_LAI|Use global 0.25x0.25 files for MEGAN input and MODIS LAI]]
+
|[https://github.com/geoschem/geos-chem/issues/1235 Add MO2 + NO3 reaction]
−
|Jenny Fisher (U. Wollongong)<br>Eloise Marais (U. Birmingham)<br>Dylan Millet (UMN)
+
|Kelvin Bates (Harvard)
−
|Bug fix/Science
+
|Chemistry
 +
|Easy
 
|
 
|
−
*Delivered to GCST (Nov 2017)
 
  
−
|-valign="top"
+
|}
−
|[[Implementation_of_HEMCO_in_GEOS-Chem#Features_added_in_v11-02|Update to HEMCO v2.1.003]] (requires updated MODIS LAI data)
+
−
|Christoph Keller (NASA GMAO)
+
−
|Structural
+
−
|
+
−
*Delivered to GCST (Jul 2017)
+
  
−
|-valign="top"
+
== Delivered and in the queue ==
−
|[http://onlinelibrary.wiley.com/doi/10.1002/2015JD023134/abstract OMI-based Volcanic emissions 2005-2012]
+
−
|Cui Ge (U. Iowa)<br>Jun Wang (U. Iowa)
+
−
|Science
+
−
|
+
−
*Delivered to GCST (Nov 2017)
+
  
−
|-valign="top"
+
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.
−
|[[EDGAR_v4.3_anthropogenic_emissions|EDGAR v4.3.1 emissions]]
+
−
|Chi Li (Dalhousie)
+
−
|Science
+
−
|
+
−
*Delivered to GCST (Nov 2016)
+
  
−
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
−
|EPA-derived BC/OA emissions over US (1990-2012)
+
|-bgcolor="#CCCCCC"
−
|David Ridley (MIT)<br>Chi Li (Dalhousie)
+
!width="200px"|Feature
−
|Science
+
!width="200px"|Contributor(s)
−
|
+
!width="100px"|Model scope
−
*Need to coordinate between Ridley and Li versions
+
!width="100px"|Ease of implementation
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[[CAC_anthropogenic_emissions#Historical_emissions|Historical CAC emissions]]
+
|[https://doi.org/10.34894/SZ2KOI AMAP 2015 emissions from GMA2018]
−
|Chi Li (Dalhousie)
+
|Helene Angot(MIT)<br>Ari Feinberg (MIT)<br>Noelle Selin (MIT)
−
|Science
+
|Hg simulation
 +
|Simple
 
|
 
|
−
*Delivered to GCST (Nov 2016)
+
* Delivered to GCST (Jul 2022)
  
 
|-valign="top"
 
|-valign="top"
−
|Ammonia emissions from Arctic seabirds
+
|[https://pubs.rsc.org/en/content/articlehtml/2022/em/d2em00032f Improvements in modelled Hg0 dry deposition to land]
−
|Betty Croft (Dalhousie)
+
|Ari Feinberg (MIT)<br>Noelle Selin (MIT)<br>Thandolwethu Dlamini (MIT)<br>Martin Jiskra (UBasel)<br>Viral Shah (Harvard)
−
|Science
+
|Hg simulation
 +
|Simple
 
|
 
|
−
*Delivered to GCST (Nov 2017)
+
* See [https://github.com/geoschem/geos-chem/pull/1367 geoschem/geos-chem PR #1367]
 +
* The study is already published and could be incorporated into the standard model as a default. Some tweaking to the reduction rate may be required as the model halogen oxidation has also been updated in v13.4.
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|[https://github.com/geoschem/geos-chem/issues/1301 HTAPv3 at 0.1 deg]
−
|Fabien Paulot (NOAA/GFDL)
+
|Dandan Zhang (WashU)
−
|Science
+
|Emissions
 +
|Simple
 
|
 
|
−
*Data files delivered to GCST (Jan 2016)
+
*Delivered to GCST (Jul 2022)
−
*Needs to be implemented via HEMCO
+
  
−
|-valign="top"
+
|}
−
|[http://www.atmos-chem-phys.net/16/2819/2016/ A snow NOx source from deep snowpack]
+
−
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
−
|Science
+
−
|
+
−
*Delivered to GCST (Nov 2017)
+
−
*Implemented in v9-01-01
+
−
*Needs to be added as a HEMCO extension
+
  
−
|-valign="top"
+
== Delivered but not yet prioritized ==
−
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
+
−
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
+
−
|Science
+
−
|
+
  
−
|-valign="top"
+
Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integration into GEOS-Chem.
−
|[[MASAGE_NH3_inventory#Non-agricultural_NH3_for_use_with_MASAGE|Non-agricultural NH3 for use with MASAGE]]
+
−
|Amos Tai (CUHK)
+
−
|Science
+
−
|
+
  
−
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
−
|Radon emission update
+
|-bgcolor="#CCCCCC"
−
|Bo Zhang (NIA/NASA Langley)
+
!width="200px"|Feature
−
|Science
+
!width="200px"|Contributor(s)
−
|
+
!width="100px"|Model scope
−
*Delivered to GCST (Nov 2017)
+
!width="100px"|Ease of implementation
−
*Implementation pending paper submission
+
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[http://onlinelibrary.wiley.com/doi/10.1002/2016JD025767/full Global ethane emissions]
+
|Tagged O3 simulation in GCHP
−
|Zitely Tzompa-Sosa (CSU)
+
|Xingpei Yu (PKU)<br>Jourdan He (WashU)
−
|Science
+
|TagO3 simulation
 +
|Simple
 
|
 
|
−
*Delivered to GCST (May 2017)
+
*[https://github.com/geoschem/geos-chem/pull/1167 geoschem/geos-chem PR #1167]
 +
* Needs to be updated to a more recent version of GCHP
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www2.acom.ucar.edu/modeling/dice-africa Inefficient combustion emissions in Africa (DICE-Africa inventory)]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|Eloise Marais (U. Birmingham)<br>Christine Wiedinmyer (NCAR)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
|Science
+
|Emissions
 +
|Simple
 
|
 
|
−
*Delivered to GCST (Nov 2017)
+
*Delivered to GCST (Jul 2022)
  
 
|-valign="top"
 
|-valign="top"
−
|Trash burning emissions
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
|Eloise Marais (U. Birmingham)<br>Christine Wiedinmyer (NCAR)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
 +
|Simple
 
|
 
|
−
*Delivered to GCST (Nov 2017)
+
*Delivered to GCST (Feb 2021)
 +
* [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
  
 
|-valign="top"
 
|-valign="top"
−
|GFAS biomass burning emissions
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|Mat Evans (York)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
−
|Science
+
|Emissions
 +
|Simple
 
|
 
|
 +
*Data files delivered to GCST (July 2021)
 +
*Data are quite large - need to think about storage, compression
  
 
|-valign="top"
 
|-valign="top"
−
|MEIC emissions over China (2000-2015)
+
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
−
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
+
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
−
|Science
+
|Chemistry
 +
|Medium
 
|
 
|
−
*Delivered to GCST (Nov 2017)
+
*Delivered to GCST (Jun 2020)
  
−
|-valign="top"
+
|}
−
|[http://www.globalchange.umd.edu/ceds/ CEDS global anthropogenic emissions (1950-2014)]
+
−
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
+
−
|Science
+
−
|
+
−
*Delivered to GCST (Nov 2017)
+
  
−
|-valign="top"
+
== Ready but not delivered ==
−
|Anthropogenic PM2.5 dust source
+
−
|Sajeev Philip (Dalhousie)
+
−
|Science
+
−
|
+
−
*Delivered to GCST (Mar 2017)
+
  
−
|-valign="top"
+
Features listed in this table are ready but have not been delivered to the GEOS-Chem Support Team.
−
|[[FINNv1_biomass_burning_emissions|FINN biomass burning emissions for 2014-2016]]
+
−
|Barron Henderson (US EPA)
+
−
|Science
+
−
|
+
−
*Delivered to GCST (Nov 2017)
+
  
−
|-
+
{| border=1 cellspacing=0 cellpadding=5
−
!colspan="4" bgcolor="#CCFFFF"|Deposition/surface updates
+
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Wet scavenging in mixed-phase clouds
+
|Updating VOC fire emissions and adding lumped furan
−
|Bo Zhang (NIA/NASA Langley)
+
|Colette Heald (MIT)<br>Jessica Haskins (MIT)
−
|Science
+
|Chemistry
 
|
 
|
−
*Delivered to GCST (Nov 2017)
+
* Carter, T. S., Heald, C. L., Kroll, J. H., Apel, E. C., Blake, D., Coggon, M., Edtbauer, A., Gkatzelis, G., Hornbrook, R. S., Peischl, J., Pfannerstill, E. Y., Piel, F., Reijrink, N. G., Ringsdorf, A., Warneke, C., Williams, J., Wisthaler, A., and Xu, L.: An Improved Representation of Fire Non-Methane Organic Gases (NMOGs) in Models: Emissions to Reactivity, Atmos. Chem. Phys. Discuss. [preprint], https://doi.org/10.5194/acp-2022-438, in review, 2022.
−
*Only applied/tested for Pb
+
−
*Implementation pending paper submission
+
−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Oxidant fields from v10 for 2006-2012
+
|Nitrate photolysis
−
*3D chemical source for CO2, CO
+
|Viral Shah (NASA GMAO)
−
*OH for tagged CO & CH4
+
|Chemistry
−
|Dylan Jones (UofT)
+
−
|Science
+
 
|
 
|
−
*Will make data files available on ftp site
+
* Shah, V., D.J. Jacob, R. Dang, L.N. Lamsal, S.A. Strode, S.D. Steenrod, K.F. Boersma, S.D. Eastham, T.M. Fritz, C. Thompson, J. Peischl, I. Bourgeois, I.B. Pollack, B.A. Nault, R.C. Cohen, P. Campuzano-Jost, J.L. Jimenez, S.T. Andersen, L.J. Carpenter, T. Sherwen, and M.J. Evans, Nitrogen oxides in the free troposphere: Implications for tropospheric oxidants and the interpretation of satellite NO2 measurements, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2022-656, 2022.
  
 
|-valign="top"
 
|-valign="top"
−
|[[Tagged_CO_simulation#New_tagged_CO_simulation_in_v11-02_and_later|Updated Tagged CO simulation]]
+
|Online H2 chemistry
−
|Jenny Fisher (Wollongong)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
−
|Science
+
|Chemistry
 
|
 
|
−
*Delivered to GCST (Nov 2017)
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[CH4_simulation#Updated_CH4_simulation_in_v11-02_and_later|Updated CH4 simulation]]
+
|Alk4 & R4N2 chemistry
−
|Bram Maasakkers (Harvard)<br>Melissa Sulprizio (Harvard)
+
|Jared Brewer (Harvard)
−
|Science
+
|Chemistry
 
|
 
|
−
*Delivered to GCST (Oct 2017)
+
* Brewer, J.F., D.J. Jacob, S.H. Jathar, Y. He, A. Akherati, S. Zhai, D.S. Jo, A. Hodzic, B.A. Nault, P. Campuzano-Jost, J.L. Jimenez, R.J. Park, Y.J. Oak, and H. Liao, A scheme for representing aromatic secondary organic aerosols in chemical transport models: application to source attribution of organic aerosols over South Korea during the KORUS-AQ campaign, submitted to J. Geophys. Res., 2022.
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to Hg chemistry from Horowitz et al. (2017)
+
|Organic acids (RCOOH)
−
|Hannah Horowitz (U. Washington)<br>Colin Thackray (Harvard)<br>Rebecca Stern (Harvard)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Year 2010 ocean Hg boundary conditions from ocean model
+
|Update reactions with new JPL & IUPAC recommendations
−
|Hannah Horowitz (Harvard)
+
|Kelvin Bates (Harvard)
−
|Science
+
|Chemistry
 
|
 
|
 +
* Currently running simulations to check magnitude of changes
  
 
|-valign="top"
 
|-valign="top"
−
|Historical products emissions from Zhang et al. (2016), should become default
+
|Improve carbon & nitrogen conservation in reactions
−
|Colin Thackray (Harvard)
+
|Kelvin Bates (Harvard)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|AMAP/UNEP 2035 for Hg simulation
+
|Blowing snow sea salt in TOMAS
−
|Helene Angot (MIT)
+
|Betty Croft (Dalhousie)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Africa nested-grid for GEOS-FP and MERRA-2
+
|Geologic emission of ethane and propane
−
|Eloise Marais (U. Birmingham)
+
|Matthew Rowlinson and Mat Evans(York)
−
|Science
+
|Emissions
 
|
 
|
 +
* Global source from https://doi.org/10.1038/s41561-018-0073-0 with spatial distribution from https://doi.org/10.5194/essd-11-1-2019
  
 
|-valign="top"
 
|-valign="top"
−
|West Africa nested-grid for GEOS-FP
+
|New version of CEDS at 0.1 deg
−
|Mat Evans (York)<br>Eleanor Morris (York)
+
|Emma Knowland (NASA)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate simulation]]
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
−
|Becky Alexander (UW)
+
|Shixian Zhai (Harvard)
−
|Science
+
|Emissions
 
|
 
|
 +
* Need permission from Qiang Zhang (Tsinghua U.) to distribute data
  
 
|-valign="top"
 
|-valign="top"
−
|Arsenic simulation
+
|KORUS-AQ emissions for East Asia
−
|Shiliang Wu (MT)
+
|Katie Travis (NASA)
−
|Science
+
|Emissions
 
|
 
|
 +
* Need permission to distribute data
  
−
|-
+
|-valign-"top"
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
−
 
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
−
|-valign="top"
+
|Hg simulation
−
|Updated flux diagnostics
+
−
|Chris Holmes (Florida State)<br>[[GCST]]
+
−
|Structural/Benchmarking
+
 
|
 
|
  
−
|-valign="top"
+
|-valign-"top"
−
|[[GEOS-Chem_Output_Files#NetCDF_File_Format|NetCDF Output Phase 3a: Output diagnostics in NetCDF format]]
+
|WRF-GC Hg simulation
−
|[[GCST]]
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
−
|Structural
+
|Hg simulation<br>WRF-GC
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
 
  
 
|-valign="top"
 
|-valign="top"
−
|FlexGrid: Use HEMCO I/O and regridding capabilities to read and regrid met fields
+
|Updated HgII gas-partical partitioning
−
|Jiawei Zhuang (Harvard)<br>Jintai Lin (PKU)
+
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
−
|Structural
+
|Hg simulation
 
|
 
|
−
*Delivered to GCST (Oct 2016)
+
* Should be option, not default
  
 
|-valign="top"
 
|-valign="top"
−
|[[ISORROPIA_II#Investigating_persistent_noise_observed_in_ISORROPIA_output|Update ISORROPIA from v2.0 to v2.2, in order to remove persistent noise in output]]
+
|Dry deposition to F90 (readability)
−
|Seb Eastham (Harvard)
+
|Chris Holmes (FSU)
−
|Science
+
|Dry deposition
 
|
 
|
−
*Delivered to GCST (May 2017)
 
−
 
 
|}
 
|}
  
−
==== Defer to v11-03 unless ready in time for v11-02 ====
+
== Almost there (< 6 months) ==
  
−
{| border=1 cellspacing=0 cellpadding=5
+
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"
 
|- bgcolor="#cccccc"
−
!width="400px"|Item
+
!width="200px"|Feature
−
!width="250px"|Author(s)
+
!width="200px"|Contributor(s)
−
!width="80px"|Type
+
!width="100px"|Model scope
−
!width="250px"|Status
+
!width="420px"|Notes and References
  
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Deposition/surface updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Harmonizing Henry's Law coefficients across wet and dry deposition
+
|DMS Chemistry
−
|[[GCST]]
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[Aerosols_Working_Group#Sedimentation_of_stratospheric_aerosols|Sedimentation of stratospheric aerosols]]
+
|PPN+hv, PPN+OH
−
|Sebastian Eastham (Harvard)
+
|Robert Ryan (UCL)
−
|Science
+
|Chemistry
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt aerosol alkalinity
+
|MBO
−
|Qianjie Chen (UW)<br>Becky Alexander (UW)<br>Xuan Wang (Harvard)
+
|Michael Vermeuel (UMN)
−
|Science
+
|Chemistry
 
|
 
|
−
*UW version delivered to GCST (Nov 2017)
 
  
 
|-valign="top"
 
|-valign="top"
−
|VBS SOA option
+
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
−
|Rokjin Park (SNU)
+
|Seb Eastham (MIT)
 
|Science
 
|Science
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Additional modifications for [[FlexChem]], including:
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, UCX, SOA, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Betty Croft (Dalhousie)
−
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Aerosols
−
|Mike Long (Harvard)<br>[[GCST]]
+
−
|Structural
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Benchmark of stratospheric simulation
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
−
|Dylan Jones (U. Toronto)
+
|Betty Croft (Dalhousie)
−
|Benchmarking
+
|Aerosols
 
|
 
|
−
*1-yr benchmarks for GEOS-Chem v11-01d and later include comparisons with OSIRIS O3
 
−
*Waiting on OSIRIS NO2 data
 
−
*Waiting on comparisons with ACE-FTS data
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[GEOS-Chem_species_units|Uniformity of units]]
+
|ML algorithms for bulk aerosols
−
|[[GCST]]
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
−
|Structural
+
|Aerosols
 
|
 
|
−
*Phase 2 (unit uniformity throughout chemistry) to be implemented after Flexchem
 
−
*Phase 3 (unit uniformity in some specialty simulations) will be implemented in pieces with input from 3rd party developers
 
−
*Phase 4 (removal of area and area-dependent State_Met variables) will be ongoing
 
  
 
|-valign="top"
 
|-valign="top"
−
|ObsPack diagnostic as netCDF replacement for planeflight_mod.F
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
−
|Andy Jacobson, NOAA/ESRL
+
|Shixian Zhai (Harvard)
−
|Structural
+
|Aerosols
 
|
 
|
−
*Delivered to GCST (May 2017)
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[GEOS-Chem_Output_Files#NetCDF_File_Format|NetCDF Output Phase 3b: Updates to eliminate differences between single and multi-segmented GEOS-Chem runs]]
+
|Updates to Hodzic SOA scheme
−
|[[GCST]]<br>Christoph Keller
+
|Jared Brewer (Harvard)
−
|Bug fix/Structural
+
|Aerosols
 
|
 
|
−
 
−
|}
 
−
 
−
==== Not prioritized for v11-02 ====
 
−
 
−
{| border=1 cellspacing=0 cellpadding=5
 
−
|- bgcolor="#cccccc"
 
−
!width="400px"|Item
 
−
!width="250px"|Author(s)
 
−
!width="80px"|Type
 
−
!width="250px"|Status
 
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt emission from sea ice
+
|Automated reduction in isoprene scheme
−
|Jiayue Huang (UW)
+
|Dan Westervelt (Lamont-Doherty)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Re-evaluation of SST dependence of sea salt emissions
+
|Brown carbon chemsitry
−
|Jiayue Huang (UW)
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
−
|Science
+
|Aerosols
 
|
 
|
  
−
|-valign="top"
 
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Discussion_of_LAI_Data_Sources|Update MODIS LAI fields through 2015]]
 
−
|Barron Henderson (UF)
 
−
|Science
 
−
|
 
  
 
|-valign="top"
 
|-valign="top"
−
|Lightning NOx chemistry parameterization
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
−
|Alicia Gressent (MIT)
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
−
|Science
+
|Convection
 
|
 
|
−
 
−
|}
 
−
 
−
=== Almost there (< 6 months) ===
 
−
 
−
{| border=1 cellspacing=0 cellpadding=5
 
−
|- bgcolor="#cccccc"
 
−
!width="400px"|Item
 
−
!width="250px"|Author(s)
 
−
!width="80px"|Type
 
−
!width="250px"|Status
 
  
 
|-valign="top"
 
|-valign="top"
−
|Aromatics and dicarbonyl chemistry
+
|Update surface methane boundary condition using NOAA flask data
−
|William Porter (MIT)<br>Tzung-May Fu (PKU)
+
|Lee Murray (Rochester)
−
|Science
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Diagnostic for species lifetime
+
|Provide recommended rather than hard-coded scaling factors for online emissions
−
|[[GCST]]
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Document chemical mechanism in KPP file
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
−
|Mat Evans (York)
+
|Jintai Lin (PKU)
−
|Structural
+
|Emissions
−
|
+
|Horizontal resolution: 5km, temporal resolution: JJA mean (monthly data will be available at a later stage; please contact us).
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon bottom up fluxes: anthro, ocean, land
+
|Updated biomass burning emission factors and species
−
|Kevin Bowman (JPL)
+
|Tess Carter (MIT)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|GISS-GC (ICECAP/GCAP2) in standard model + benchmark
+
|Updated offline sea salt emissions
−
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC offline coupling in standard model + benchmark
+
|HgII deposition too high in 13.4; Hg0 conc too low; should not use as is
−
|Rokjin Park (SNU)<br>Daniel Rothenberg (MIT)
+
|Viral Shah (NASA GMAO)<br>Yanxu Zhang (Nanjing U.)<br>Ari Feinberg (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC GCHP
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
−
|Daniel Rothenberg (MIT)
+
|Sam Silva (MIT)
−
|Science
+
|Emissions &<br>Science
 
|
 
|
 +
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
 +
*Needs to be updated to a more recent GEOS-Chem version
  
 
|-valign="top"
 
|-valign="top"
−
|Injection height for fire emissions
+
|Gridded EPA (GEPA) version 2 emissions for 2012-2018
−
|Juliet Zhu (CSU)<br>Emily Fischer (CSU)
+
|Bram Maasakkers (SRON)<br>Erin McDuffie (WashU),<br>Melissa Sulprizio (Harvard)
−
|Science
+
|Emissions<br>CH4 simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Diurnal variability for NH3
+
|Reduce dimension of analytical inversion
−
|Henze group
+
|Hannah Nesser (Harvard)
−
|Science
+
|Adjoint capability
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|EPA NEI2011 Version EK
+
|Retire all BPCH diagnostics
−
|Zitely Tzompa-Sosa (CSU)<br>Emily Fischer (CSU)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|OH + NO2 rate update
+
|GEOS-Chem in CESM 2.3
−
|Barron Henderson (EPA)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|Interfacing with ESMs
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|N2O5 hydrolysis updates
+
|Assess memory leak in GCHP
−
|Viral Shah (UW)
+
|Killian Murphy (York)
−
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Land cover module: Harmonized biosphere-atmosphere exchange and implementing CLM or manual land cover change experiments
+
|Point to internal state for species mixing ratios in GCHP and GEOS
−
|Jeff Geddes (BU)
+
|Lizzie Lundgren (Harvard)<br>Christoph Keller (NASA)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|H2 chemistry in UCX
+
|Assess precision in GCHP internal state - use R4 for some?
−
|Chris Holmes (FSU)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Uptake of HNO3 onto coarse-mode sea salt
+
|Hybrid MPI-OpenMP in GCHP
−
|Prasad Kasibhatla (Duke)
+
|Seb Eastham (MIT)<br>Killian Murphy (York)
−
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Photolysis of NITs
+
|Convert HEMCO input files to YAML
−
|Prasad Kasibhatla (Duke)
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[POPs simulation#PCB simulation|PCB simulation]]
+
|Allow easy disabling of HEMCO emissions for testing
−
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|Structural
 
|
 
|
−
 
  
 
|-valign="top"
 
|-valign="top"
−
|New EDGAR sectoral inventory for Hg (1970-2012)
+
|Improve run directory templating and creation with init_rd.sh and shared directories
−
|Amanda Giang (MIT)
+
|Jourdan He (WashU)
−
|Science
+
|Run directories
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Wet deposition parameterizations: pH dependency, Henry's law coefficients, etc.
+
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc  
−
|Sarah Safieddine (MIT)<br>GCST
+
|GCST?
−
|Science
+
|Documentation
 
|
 
|
  
−
|-valign="top"
+
|-valign="top"<
−
|Archive GISS met fields from RCP scenarios for community
+
|Upgrade Fast-JX to Cloud-J
−
|Lee Murray (Rochester)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Online O3-LAI coupling in GEOS-Chem
+
−
|Amos Tai (CUHK)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Clean up SOA diagnostics
+
−
|GCST
+
−
|Structural
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Calculation consistency throughout code: surface area, HGF (via species database)
+
−
|GCST
+
 
|Structural
 
|Structural
 
|
 
|
Line 721: Line 570:
 
|}
 
|}
  
−
=== 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="400px"|Item
+
!width="200px"|Feature
−
!width="250px"|Author(s)
+
!width="200px"|Contributor(s)
−
!width="80px"|Type
+
!width="100px"|Model scope
−
!width="250px"|Status
+
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|GISS-GC GCHP
+
|Snow / Icy Bromine
−
|Lee Murray (Rochester)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Dynamic fire modeling/prediction
+
|Monoterpene oxidation scheme
−
|Shiliang Wu (MNT)
+
|Jessica Haskins (MIT)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Interannually varying ocean model BCs for Hg from ocean model
+
|Fire related VOCs including furans
−
|Colin Thackray (Harvard)
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|PAH & PFCA simulations
+
|Extension of UCX into the mesosphere
−
|Peter Ivatt (York)<br>Mat Evans (York)<br>Noelle Selin (MIT)<br>Colin Thackray (Harvard)
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|CH4 in full chemistry simulation
+
|Methane flux ingestion
−
|Seb Eastham (Harvard)
+
|Eloise Marais (UCL)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Standard future land use maps (PFT, LAI) for RCP/CMIP6 simulations
+
|Parameterized effective radius
−
|Colette Heald (MIT)<br>Loretta Mickley (Harvard)
+
|Haihui Zhu (WashU)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive GISS met fields from CMIP6 scenarios for community
+
|Dust non-sphericity impacts on surface chem and optical properties
−
|Lee Murray (Rochester)
+
|Inderjeet Singh (WashU)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to cold-temperature deposition
+
|Size-resolved stratospheric aerosol
−
|Lyatt Jaegle (UW)
+
|Seb Eastham (MIT)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Simple parameterization for CO2-O3 dependence of stomatal resistance
+
|Extend aerosol settling
−
|Amos Tai (CUHK)
+
|Eloise Marais (UCL)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|NH3 emissions over China
+
|Stratospheric aerosol APM
−
|Lin Zhang (PKU)
+
|Fangqun Yu (SUNY)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Using GEOS-Chem within GEOS-5
+
|Plume-in-grid model
−
|Loretta Mickley (Harvard)
+
|Hongwei Sun (Harvard)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
−
|Beata Bukosa (Wollongong)<br>Dylan Jones (UofT)
+
|Lee Murray (Rochester)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Seasonal EMEP emissions back to 1980
+
|Seb aircraft emissions beyond recent 2019 update
−
|Mat Evans (York)
+
|Seb Eastham (MIT)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to NO2 dry deposition
+
|FRP-based fire emsisions for eastern US at 0.2 deg
−
|Brian Boys (Dalhousie)
+
|Charlie Fite (FSU)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|APM update and integration with most recent GEOS-Chem version
+
|Hg iodine chemistry
−
|Gan Luo (SUNY Albany)
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
−
|Structural
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Cosmogenic tracer production
+
|Hg simulation in GCHP
−
|Lee Murray (Rochester)
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Explore resolution-consistent dust emissions
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
−
*Make high-res concentrations or mass fluxes available offline, implement in met field processing
+
|Yanxu Zhang (Nanjing U.)
−
|David Ridley (MIT)<br>GCST<br>Nested Model WG
+
|Hg simulation
−
|Science
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Dust emissions at nested-grid resolutions
+
|Dry deposition diagnostics by land cover
−
|Yuxuan Wang (U. Houston)<br>Jun Wang (U. Iowa)
+
|Holly Nowell (FSU)
−
|Science
+
|Diagnostics
 
|
 
|
−
*Check for overlap with resolution-consistent dust emissions above
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Wet_deposition#Update_SO2_scavenging_in_convective_updrafts_for_consistency|Update SO2 scavenging in convective updrafts for consistency]]
+
|Dry deposition process diagnostics
−
|Duncan Fairlie (NASA/LARC)  
+
|Holly Nowell (FSU)
−
|Science
+
|Diagnostics
 
|
 
|
  
−
|}
+
|-valign="top"
 +
|Isotope simulation for CO and CH4 in GCHP
 +
|Lee Murray (Rochester)
 +
|Carbon simulation
 +
|
  
−
=== Longer term (12-24 months)===
+
|-valign="top"
−
 
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
−
{| border=1 cellspacing=0 cellpadding=5
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
−
|- bgcolor="#cccccc"
+
|Emissions<br>CH4 simulation
−
!width="400px"|Item
+
|
−
!width="250px"|Author(s)
+
−
!width="80px"|Type
+
−
!width="250px"|Status
+
  
 
|-valign="top"
 
|-valign="top"
−
|GCHP stretched grid
+
|Separate mixing and emissions
−
|Jiawei Zhuang (Harvard)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|1/8 degree nested-grid simulations with GEOS-FP
+
|Modularization of aerosols code for interface with GOCART in GEOS
−
|Nested Model WG
+
|Christoph Keller (GMAO)
−
|Science
+
|Structural
 
|
 
|
−
*Wait for more interest
 
  
 
|-valign="top"
 
|-valign="top"
−
|Embedding GEOS-Chem into CESM
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Jean-Francois Lamarque (NCAR)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Adjoint of carbon cycle simulation in GCHP
+
|Improve load balancing in GCHP
−
|Kevin Bowman (JPL)
+
|Seb Eastham (MIT)
−
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Isoprene chemistry v2 (new Caltech update)
+
|Update to MAPL 3 in GCHP, including replacement of ExtData.rc with YAML file
−
|Kelvin Bates (Caltech)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Contemporary land cover: developing historical and updated GEOS-Chem land cover maps based on satellite remote sensing
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
−
|Jeff Geddes (BU)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Farquhar-Ball-Barry model to calculate stomatal resistance
+
|Limit allocation of State_Met to what is needed per simulation
−
|Amos Tai (CUHK)<br>Jeff Geddes (BU)
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Impacts of chemistry on ecosystem/carbon cycle
+
|Make frequency of HEMCO restart file configurable
−
|Kevin Bowman (JPL)<br>Anthony Bloom (JPL)
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Improved lightning emission scheme
+
|Apply masks/scaling in HEMCO based on input category or flag
−
|Lee Murray (Rochester)
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Resolution-independent lightning NOx
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
−
|Lee Murray (Rochester)
+
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
−
|Science
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Bidirectional NH3 emissions
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
−
|Juliet Zhu (CSU)
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
−
|Science
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Country-based weekday/weekend variability for EDGAR 4.2
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
−
|Lee Murray (Rochester)<br>Christoph Keller (Harvard)
+
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
−
|Science
+
|Transport
 
|
 
|
 +
 +
|}
 +
 +
== Longer term (12-24 months)==
 +
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.
 +
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes and References
 +
  
 
|-valign="top"
 
|-valign="top"
−
|Update keytone photolysis
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|Jared Brewer (CSU)<br>Emily Fischer (CSU)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
−
|Science
+
|Emissions
 
|
 
|
 +
*See [https://github.com/geoschem/geos-chem/issues/1288 geoschem/geos-chem #1288]
 +
*[https://github.com/geoschem/geos-chem/issues/1288#issuecomment-1255103962 NOTE: This feature has been tabled for the time being.]
  
 
|-valign="top"
 
|-valign="top"
−
|Small alkyl nitrates
+
|Updates to Aromatic chemistry
−
|Jenny Fisher (Wollongong)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|YIBS-GC chemistry-biosphere-fire coupling
+
|Nitrate photolysis
−
|Loretta Mickley (Harvard)<br>Xu Yue (IAP)
+
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Nitrogen-LAI coupling
+
|In aerosol chemistry Halogens
−
|Lin Zhang (PKU)<br>Amos Tai (CUHK)
+
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Implementing humidity/VPD dependence of dry deposition
+
|Benchmark box model of GC Chemistry
−
|Jennifer Murphy (U. Toronto)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|SO2 wet scavenging
+
|Alkyl nitrates Alk7, PHAN
−
|Duncan Fairlie (NASA Langley)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Heterogeneous sulfate production
+
|Add stratospheric ozone species to full-chemistry simulations
−
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Lee Murray (Rochester)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|MOSAIC implementation
+
|Perchlorate chemistry
−
|Sebastian Eastham (Harvard)
+
|Yuk Chun Chan (UWAB)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Particle size climatology
+
|Explicit heterogeneous sulfate chemistry
−
|Fangqun Yu (SUNY Albany)
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt/dust size distribution
+
|ISORROPIA-lite
−
|David Ridley (MIT)<br>Colette Heald (MIT)
+
|Becky Alexander (UW)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to GTMM
+
|HOx and ozone "emissions" from lightning as option in model to play with
−
|Rebecca Stern (Harvard)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Tracer transport ocean
+
|Sea salt aerosol from sea ice leads
−
|Chris Holmes (FSU)
+
|Hannah Horowitz (U. Illinois)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Include Hg in full chemistry simulation
+
|Drought-stress algorithm
−
|Noelle Selin (MIT)
+
|Wei Li (U. Houston)
−
|Science
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Goddard seasonal weather prediction in GCHP
+
|Biomass burning injection height profiles
−
|Kevin Bowman (JPL)
+
|Inderjeet Singh (WashU)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Climate index diagnostics (drought, etc.)
+
|OCIM integration
−
|Chemistry-ecosystems-climate WG
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
−
|Structural
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Joint CO/CO2/CH4 simulation
+
|Updating landcover products in GEOS-Chem
−
|Nicholas Deutscher (U. Wollongong)
+
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
−
|Science
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon coupling: oceans and terrestrial models
+
|Dry deposition physical improvement
 
|Chris Holmes (FSU)
 
|Chris Holmes (FSU)
−
|Science
+
|Dry deposition
 
|
 
|
−
*Ocim-pure physical transport, ECCO-Darwin ocean biogeochemistry
 
  
 
|-valign="top"
 
|-valign="top"
−
|DMS oxidation scheme updating
+
|Extend the IMI system to other trace gases
−
|Qianjie Chen (UW)<br>Chemistry WG
+
|Lucas Estrada (Harvard)
−
|Science
+
|Adjoint capabilities
 
|
 
|
 +
  
 
|-valign="top"
 
|-valign="top"
−
|Limiting NH3 uptake due to OA
+
|TOMAS WRF-GC in regional Thailand simulation
−
|Rachel Silvern (Harvard)
+
|Win Trivitayanurak (Chulalongkorn U)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|}
 
|}
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 20:44, 12 May 2017 (UTC)
+
----------------
 +
 
 +
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''

Revision as of 18:24, 22 September 2022

GEOS-Chem Main Page | GCHP Main Page

On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the Working Groups and the Steering Committee. For history of past releases see the GEOS-Chem Versions wiki page.

Release schedule

Please see the GEOS-Chem Release Proposal outlining the procedure and schedule for releasing GEOS-Chem versions.

Merged and awaiting release

See the links below for items merged and awaiting release.

Patch version in development Major version in development
- GEOS-Chem 14.0.0

Feature integration in progress

Features listed in this table are actively being integrated into GEOS-Chem by the GEOS-Chem Support Team. In addition, we continuously implement structural updates in the model to maintain and develop coupling with other models including GEOS, CESM, and the model adjoint.

Feature Contributor(s) Model scope Ease of implementation Notes and References


TOMAS in GCHP Betty Croft (WashU) Aerosols Simple
Adaptive chemical solver (as option) / KPP 3.0.0 Mike Long (Harvard)
Haipeng Lin (Harvard)
Bob Yantosca (GCST)
Lu Shen (PKU) 		Chemistry Complicated
  • Lin, H., M.S. Long, R. Sander, R.M. Yantosca, L.A. Estrada, L. Shen, and D.J. Jacob, An adaptive auto-reduction solver for speeding up integration of chemical kinetics in atmospheric chemistry models: implementation and evaluation in the Kinetic Pre-Processor (KPP) version 3.0.0, submitted to JAMES, https://doi.org/10.31223/X5505V, 2022.
Joint CO2-CO-CH4-OCS simulation via KPP Beata Bukosa (NIWA)
Kevin Bowman (JPL)
Mike Long (Harvard) 		Specialty simulation Medium
RO2 diagnostic Melissa Sulprizio (Harvard) Diagnostics Simple
Output satellite diagnostics as NetCDF Eloise Marais (UCL) Diagnostics Simple
Provide climatologies for open fire emissions Melissa Sulprizio (Harvard) Emissions Simple
Climatologies for lightning NOx Lee Murray (Rochester) Emissions Simple
Add new species concentration diagnostic in units of molec/cm3 Haipeng Lin (Harvard) Diagnostics Simple
Identify and remove memory leaks and similar issues Bob Yantosca (Harvard) Structural Medium
Update transport tracer simulation for consistency with the tracer gridded component in GEOS Melissa Sulprizio (Harvard) TransportTracer simulation Simple
Bug fix for GFAS in GCHP Lizzie Lundgren (Harvard) GCHP Simple
Use pointers to internal state for species arrays in GCHP/GEOS Lizzie Lundgren (Harvard) GCHP/GEOS Medium
Revision to a rate constant for the C2H4 scheme Kelvin Bates (Harvard) Chemistry Easy
Fix product in HOBr/Cl + S(IV) reactions Xuan Wang (CUHK) Chemistry Easy
Add MO2 + NO3 reaction Kelvin Bates (Harvard) Chemistry Easy

Delivered and in the queue

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

Feature Contributor(s) Model scope Ease of implementation Notes and References
AMAP 2015 emissions from GMA2018 Helene Angot(MIT)
Ari Feinberg (MIT)
Noelle Selin (MIT) 		Hg simulation Simple
  • Delivered to GCST (Jul 2022)
Improvements in modelled Hg0 dry deposition to land Ari Feinberg (MIT)
Noelle Selin (MIT)
Thandolwethu Dlamini (MIT)
Martin Jiskra (UBasel)
Viral Shah (Harvard) 		Hg simulation Simple
  • See geoschem/geos-chem PR #1367
  • The study is already published and could be incorporated into the standard model as a default. Some tweaking to the reduction rate may be required as the model halogen oxidation has also been updated in v13.4.
HTAPv3 at 0.1 deg Dandan Zhang (WashU) Emissions Simple
  • Delivered to GCST (Jul 2022)

Delivered but not yet prioritized

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

Feature Contributor(s) Model scope Ease of implementation Notes and References
Tagged O3 simulation in GCHP Xingpei Yu (PKU)
Jourdan He (WashU) 		TagO3 simulation Simple
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech) 		Emissions Simple
  • Delivered to GCST (Jul 2022)
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam(CUHK)
Amos Tai (CUHK) 		Science Simple
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor University)
Loretta Mickley (Harvard) 		Emissions Simple
  • Data files delivered to GCST (July 2021)
  • Data are quite large - need to think about storage, compression
Stratospheric HCN chemistry Armin Kleinbohl (JPL)
Debra Weisenstein (Harvard, retired) 		Chemistry Medium
  • Delivered to GCST (Jun 2020)

Ready but not delivered

Features listed in this table are ready but have not been delivered to the GEOS-Chem Support Team.

Feature Contributor(s) Model scope Notes and References
Updating VOC fire emissions and adding lumped furan Colette Heald (MIT)
Jessica Haskins (MIT) 		Chemistry
  • Carter, T. S., Heald, C. L., Kroll, J. H., Apel, E. C., Blake, D., Coggon, M., Edtbauer, A., Gkatzelis, G., Hornbrook, R. S., Peischl, J., Pfannerstill, E. Y., Piel, F., Reijrink, N. G., Ringsdorf, A., Warneke, C., Williams, J., Wisthaler, A., and Xu, L.: An Improved Representation of Fire Non-Methane Organic Gases (NMOGs) in Models: Emissions to Reactivity, Atmos. Chem. Phys. Discuss. [preprint], https://doi.org/10.5194/acp-2022-438, in review, 2022.
Nitrate photolysis Viral Shah (NASA GMAO) Chemistry
  • Shah, V., D.J. Jacob, R. Dang, L.N. Lamsal, S.A. Strode, S.D. Steenrod, K.F. Boersma, S.D. Eastham, T.M. Fritz, C. Thompson, J. Peischl, I. Bourgeois, I.B. Pollack, B.A. Nault, R.C. Cohen, P. Campuzano-Jost, J.L. Jimenez, S.T. Andersen, L.J. Carpenter, T. Sherwen, and M.J. Evans, Nitrogen oxides in the free troposphere: Implications for tropospheric oxidants and the interpretation of satellite NO2 measurements, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2022-656, 2022.
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN) 		Chemistry
Alk4 & R4N2 chemistry Jared Brewer (Harvard) Chemistry
  • Brewer, J.F., D.J. Jacob, S.H. Jathar, Y. He, A. Akherati, S. Zhai, D.S. Jo, A. Hodzic, B.A. Nault, P. Campuzano-Jost, J.L. Jimenez, R.J. Park, Y.J. Oak, and H. Liao, A scheme for representing aromatic secondary organic aerosols in chemical transport models: application to source attribution of organic aerosols over South Korea during the KORUS-AQ campaign, submitted to J. Geophys. Res., 2022.
Organic acids (RCOOH) Katie Travis (NASA) Chemistry
Update reactions with new JPL & IUPAC recommendations Kelvin Bates (Harvard) Chemistry
  • Currently running simulations to check magnitude of changes
Improve carbon & nitrogen conservation in reactions Kelvin Bates (Harvard) Chemistry
Blowing snow sea salt in TOMAS Betty Croft (Dalhousie) Aerosols
Geologic emission of ethane and propane Matthew Rowlinson and Mat Evans(York) Emissions
New version of CEDS at 0.1 deg Emma Knowland (NASA) Emissions
MEIC (China regional) for 2000-2017 at 0.5x0.625 deg Shixian Zhai (Harvard) Emissions
  • Need permission from Qiang Zhang (Tsinghua U.) to distribute data
KORUS-AQ emissions for East Asia Katie Travis (NASA) Emissions
  • Need permission to distribute data
Australian anthropogenic Hg emissions Stephen MacFarlane (UOW)
Jenny Fisher (UOW)
Hannah Horowitz (U. Illinois)
Viral Shah (Harvard) 		Hg simulation
WRF-GC Hg simulation Xiaotian Xu (Nanjing U.)
Yanxu Zhang (Nanjing U.) 		Hg simulation
WRF-GC
Updated HgII gas-partical partitioning Kaiyun Liu (Tsinghua U.)
Qingru Wu (Tsinghua U.)
Shuxiao Wang (Tsinghua U.) 		Hg simulation
  • Should be option, not default
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry deposition

Almost there (< 6 months)

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

Feature Contributor(s) Model scope Notes and References


DMS Chemistry Linia Tashmim (UC Riverside)
William Porter (UC Riverside) 		Chemistry
PPN+hv, PPN+OH Robert Ryan (UCL) Chemistry
MBO Michael Vermeuel (UMN) Chemistry
Stratospheric adjustment with RRTMG in GEOS-Chem Seb Eastham (MIT) Science
Re-binning of off-line sea salt and dust for use in TOMAS Betty Croft (Dalhousie) Aerosols
Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90 Betty Croft (Dalhousie) Aerosols
ML algorithms for bulk aerosols Arshad Nair (SUNY Albany)
Fangqun Yu (SUNY Albany) 		Aerosols
PM2.5 and PM10 calculations: aerodynamic vs geometric diameters Shixian Zhai (Harvard) Aerosols
Updates to Hodzic SOA scheme Jared Brewer (Harvard) Aerosols
Automated reduction in isoprene scheme Dan Westervelt (Lamont-Doherty) Aerosols
Brown carbon chemsitry Jingqiu Mao (U. Alaska)
Xuan Wang (CUHK) 		Aerosols


GEOS resolution and subgrid convection - Part 2 RAS parameter tuning Tailong He (Toronto)
Dylan Jones (Toronto)
Andrea Molod (NASA GMAO) 		Convection
Update surface methane boundary condition using NOAA flask data Lee Murray (Rochester) Input data
Provide recommended rather than hard-coded scaling factors for online emissions Melissa Sulprizio (Harvard) Emissions
High-res top-down TROPOMI-derived seasonal mean NOx emissions for China Jintai Lin (PKU) Emissions Horizontal resolution: 5km, temporal resolution: JJA mean (monthly data will be available at a later stage; please contact us).
Updated biomass burning emission factors and species Tess Carter (MIT) Emissions
Updated offline sea salt emissions Hongjian Weng (PKU)
Jintai Lin (PKU) 		Emissions
HgII deposition too high in 13.4; Hg0 conc too low; should not use as is Viral Shah (NASA GMAO)
Yanxu Zhang (Nanjing U.)
Ari Feinberg (MIT) 		Hg simulation
Canopy Physics Model Sam Silva (MIT) Emissions &
Science
Gridded EPA (GEPA) version 2 emissions for 2012-2018 Bram Maasakkers (SRON)
Erin McDuffie (WashU),
Melissa Sulprizio (Harvard) 		Emissions
CH4 simulation
Reduce dimension of analytical inversion Hannah Nesser (Harvard) Adjoint capability
Retire all BPCH diagnostics Bob Yantosca (Harvard) Diagnostics
GEOS-Chem in CESM 2.3 Lizzie Lundgren (Harvard) Interfacing with ESMs
Assess memory leak in GCHP Killian Murphy (York) Model performance
Point to internal state for species mixing ratios in GCHP and GEOS Lizzie Lundgren (Harvard)
Christoph Keller (NASA) 		Structural
Assess precision in GCHP internal state - use R4 for some? Lizzie Lundgren (Harvard) Structural
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York) 		Model performance
Convert HEMCO input files to YAML Melissa Sulprizio (Harvard) Structural
Allow easy disabling of HEMCO emissions for testing Melissa Sulprizio (Harvard) Structural
Improve run directory templating and creation with init_rd.sh and shared directories Jourdan He (WashU) Run directories
Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc GCST? Documentation
Upgrade Fast-JX to Cloud-J Lizzie Lundgren (Harvard) Structural

Over the horizon (6-12 months)

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

Feature Contributor(s) Model scope Notes and References
Snow / Icy Bromine Becky Alexander (UW)
William Swanson (U. Alaska)
Shuting Zhai (UW) 		Chemistry
Monoterpene oxidation scheme Jessica Haskins (MIT) Chemistry
Fire related VOCs including furans Lu Hu (UMT)
Lixu Jin (UMT) 		Chemistry
Extension of UCX into the mesosphere Seb Eastham (MIT)
Eric Fleming (NASA) 		Chemistry
Methane flux ingestion Eloise Marais (UCL) Chemistry
Parameterized effective radius Haihui Zhu (WashU) Aerosols
Dust non-sphericity impacts on surface chem and optical properties Inderjeet Singh (WashU) Aerosols
Size-resolved stratospheric aerosol Seb Eastham (MIT) Aerosols
Extend aerosol settling Eloise Marais (UCL) Aerosols
Stratospheric aerosol APM Fangqun Yu (SUNY) Aerosols
Plume-in-grid model Hongwei Sun (Harvard) Chemistry
Updated lightning NOx: Prescribe from ground and geostationary lightning flashes Lee Murray (Rochester) Emissions
Seb aircraft emissions beyond recent 2019 update Seb Eastham (MIT) Emissions
FRP-based fire emsisions for eastern US at 0.2 deg Charlie Fite (FSU) Emissions
Hg iodine chemistry Yiming Fu
Yanxu Zhang (Nanjing U.) 		Hg simulation
Hg simulation in GCHP Ari Feinberg (MIT)
Lyssa Freese (MIT) 		Hg simulation
Update Hg ocean and soil boundary conditions for consistency with new chemistry Yanxu Zhang (Nanjing U.) Hg simulation
Dry deposition diagnostics by land cover Holly Nowell (FSU) Diagnostics
Dry deposition process diagnostics Holly Nowell (FSU) Diagnostics
Isotope simulation for CO and CH4 in GCHP Lee Murray (Rochester) Carbon simulation
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Melissa Sulprizio (Harvard)
Tia Scarpelli (U. Edinburgh)
Zichong Chen (Harvard) 		Emissions
CH4 simulation
Separate mixing and emissions Bob Yantosca (Harvard) Structural
Modularization of aerosols code for interface with GOCART in GEOS Christoph Keller (GMAO) Structural
Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism Bob Yantosca (Harvard) Structural
Improve load balancing in GCHP Seb Eastham (MIT) Model performance
Update to MAPL 3 in GCHP, including replacement of ExtData.rc with YAML file Lizzie Lundgren (Harvard) Structural
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Model performance
Limit allocation of State_Met to what is needed per simulation Melissa Sulprizio (Harvard) Structural
Make frequency of HEMCO restart file configurable Melissa Sulprizio (Harvard) Diagnostics
Apply masks/scaling in HEMCO based on input category or flag Melissa Sulprizio (Harvard) Structural
Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer Bo Zhang (NIA)
Hongyu Liu (NIA / NASA Langley) 		Transport
Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer Gan Luo (SUNY Albany)
Fangqun Yu (SUNY-Albany) 		Transport
Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons Seb Eastham (MIT)
Clara Orbe (NASA GISS)
Andrew Schuh (CSU) 		Transport

Longer term (12-24 months)

Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.

Feature Contributor(s) Model scope Notes and References


New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions
Updates to Aromatic chemistry Stephen MacFarlane (UOW)
Jenny Fisher (UOW) 		Chemistry
Nitrate photolysis Mat Evans (York)
Thomas Sherwen (York)
Matthew Rowlinson (York) 		Chemistry
In aerosol chemistry Halogens Mat Evans (York)
Hansen Cao (CU Boulder) 		Chemistry
Benchmark box model of GC Chemistry Katie Travis (NASA) Chemistry
Alkyl nitrates Alk7, PHAN Katie Travis (NASA) Chemistry
Add stratospheric ozone species to full-chemistry simulations Lee Murray (Rochester) Chemistry
Perchlorate chemistry Yuk Chun Chan (UWAB) Chemistry
Explicit heterogeneous sulfate chemistry Katie Travis (NASA)
Becky Alexander (UT) 		Chemistry
ISORROPIA-lite Becky Alexander (UW) Aerosols
HOx and ozone "emissions" from lightning as option in model to play with Jingqiu (Alaska)
Lee Murray (Rochester) 		Emissions
Sea salt aerosol from sea ice leads Hannah Horowitz (U. Illinois) Emissions
Drought-stress algorithm Wei Li (U. Houston)
Biomass burning injection height profiles Inderjeet Singh (WashU) Emissions
OCIM integration Chris Holmes (FSU)
Lee Murray (Rochester)
Updating landcover products in GEOS-Chem Chris Holmes (FSU)
Jeff Geddes (BU) 		Input data
Dry deposition physical improvement Chris Holmes (FSU) Dry deposition
Extend the IMI system to other trace gases Lucas Estrada (Harvard) Adjoint capabilities


TOMAS WRF-GC in regional Thailand simulation Win Trivitayanurak (Chulalongkorn U) Aerosols

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