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

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(→‎Slated for inclusion in v11-02)
(→‎Feature integration in progress)
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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.
+
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]].
  
−
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.
+
== Merged and awaiting release ==
  
−
== List of priorities as of May 2017 ==
+
See the links below for items merged and awaiting release.
  
−
The items listed below are in different stages of readiness and will be included in future versions of the model.
+
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="300px"|Mergeable at any time
 +
!width="200px"|Version in development
  
−
=== Awaiting release ===
+
|-valign="top"
 +
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
 +
|align="center"|'''[[GEOS-Chem 14.4.0]]'''
  
−
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.
+
|}
  
−
{| border=1 cellspacing=0 cellpadding=5
+
== Feature integration in progress ==
−
|- bgcolor="#cccccc"
+
−
!width="400px"|Item
+
−
!width="300px"|Author(s)
+
−
!width="400px"|Status
+
  
−
|- bgcolor="#ccffff"
+
Features listed in this table are actively being integrated into GEOS-Chem by the [https://geoschem.github.io/support-team.html 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.
−
!colspan="3"|Science updates
+
 
 +
{| 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 and References
  
 
|-valign="top"
 
|-valign="top"
−
|[[Updates_in_JPL_Publication_15-10|Updating chemistry rate constants based on ''JPL Publication 15-10'']]
+
|GCHP carbon simulation
−
|Barron Henderson (U. Florida)<br>Mat Evans (U. York)<br>[[Chemistry Issues|Oxidants and Chemistry WG]]
+
|Melissa Sulprizio (Harvard)<br>Bob Yantosca (Harvard)
 +
|Carbon
 +
|Medium
 
|
 
|
−
*Included in [[GEOS-Chem v11-02#v11-02a|v11-02a]] (pending approval)
+
*[https://github.com/geoschem/geos-chem/pull/1992 geos-chem PR #1992]
 +
*[https://github.com/geoschem/GCHP/issues/339 GCHP Issue #339]
  
 
|-valign="top"
 
|-valign="top"
−
|[[PAN|PAN updates (including emissions, deposition, species, chemistry)]]
+
|KORUS-AQ emissions for East Asia (as an option)
−
|Emily Fischer (CSU)
+
|Katie Travis (NASA)
 +
|Emissions
 +
|Simple
 
|
 
|
−
*Included in [[GEOS-Chem v11-02#v11-02a|v11-02a]] (pending approval)
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[EPA/NEI11_North_American_emissions#Monthly_mean_emissions|Monthly mean NEI2011 emissions]]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|[[GCST]]<br>Katie Travis (Harvard)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
 +
|Emissions
 +
|Simple
 
|
 
|
−
*Included in [[GEOS-Chem v11-02#v11-02a|v11-02a]] (pending approval)
 
  
−
|-bgcolor="#ccffff" valign="top"
+
|-valign="top"
−
!colspan="3"|Structural/programming updates
+
|New version of CEDS at 0.1 deg
 +
|Dandan Zhang (WashU)
 +
|Emissions
 +
|Simple
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
 +
*'''Currently on hold while an issue with seasonality in the new CEDS data is being investigated'''
  
 
|-valign="top"
 
|-valign="top"
−
|TBD
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|  
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
 +
|Emissions
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
*Incorporates new met field TSOIL1
  
−
|-bgcolor="#ccffff" valign="top"
+
|-valign="top"
−
!colspan="3"|Documentation
+
|Remove differences in GC-Classic when breaking up runs in time
 +
|Lizzie Lundgren (Harvard)
 +
|GC-Classic
 +
|Medium
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|TBD
+
|GCHP advection diagnostics
−
|  
+
|Lizzie Lundgren (Harvard)
 +
|GCHP diagnostics
 +
|Simple
 
|
 
|
 +
*[https://github.com/geoschem/GCHP/pull/395 gchp PR #395]
 +
 +
|-valign="top"
 +
|Only convert units for species that need it
 +
|Bob Yantosca (Harvard)
 +
|Unit conversions
 +
|Medium
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]
 +
*'''This update breaks TOMAS, further development is needed'''
  
 
|}
 
|}
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 17:19, 11 May 2017 (UTC)
+
== Prioritized and in the queue ==
  
−
=== Ready to go in ===
+
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
  
−
==== Slated for inclusion in v11-02 ====
+
{| border=1 cellspacing=0 cellpadding=5  
−
 
+
|-bgcolor="#CCCCCC"
−
The following items were prioritized for inclusion in [[GEOS-Chem v11-02]].
+
!width="200px"|Feature
−
 
+
!width="200px"|Contributor(s)
−
{| border=1 cellspacing=0 cellpadding=5
+
!width="100px"|Model scope
−
|- bgcolor="#cccccc"
+
!width="100px"|Ease of implementation
−
!width="400px"|Item
+
!width="100px"|Delivery status
−
!width="250px"|Author(s)
+
!width="300px"|Notes and References
−
!width="80px"|Type
+
−
!width="250px"|Status
+
−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to isoprene chemistry, includes:
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
−
*Fast photolysis of carbonyl nitrates
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
−
*Aerosol uptake of organic nitrates
+
|Chemistry
−
*Nighttime isoprene chemistry
+
|TBD
−
*Updated organic deposition
+
|Delivered<br>June 2023
−
*Remove dependence of species drydep on HNO3 drydep
+
−
|Jenny Fisher (U. Wollongong)<br>Elo&iuml;se Marais (Harvard)<br>Katie Travis (Harvard)<br>Kelvin Bates (Caltech)<br>Rebecca Schwantes(Caltech)
+
−
|Science
+
 
|
 
|
−
*Delivered to GCST (Mar 2017)
+
*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
−
*Slated for [[GEOS-Chem v11-02#v11-02c|v11-02c]]
+
*Implemented in v12.5, needs to be brought up to current version
  
 
|-valign="top"
 
|-valign="top"
−
|Enhance default GEOS-Chem simple SOA
+
|ALK4 & R4N2 chemistry
−
|Aerosol Working Group Chairs
+
|Jared Brewer (UMN)
−
|Science
+
|Chemistry
 +
|TBD
 +
|Not delivered
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02c|v11-02c]]
+
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
 +
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., submitted 2023.]
  
 
|-valign="top"
 
|-valign="top"
−
|Add aqueous isoprene uptake to SOA scheme
+
|[https://github.com/geoschem/geos-chem/pull/1983 Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition]
−
|Eloise Marais (Harvard)
+
|Yanshun Li (WashU)
−
|Science
+
|Aerosols
 +
|Simple
 +
|Delivered<br>Oct 2023
 
|
 
|
−
*Delivered to GCST (Jul 2016)
+
*[https://acp.copernicus.org/articles/23/12525/2023/acp-23-12525-2023.html Li et al., ACP, 2023.]
−
*Slated for [[GEOS-Chem v11-02#v11-02c|v11-02c]]
+
*[https://github.com/geoschem/geos-chem/pull/1983 geos-chem PR #1983]
 +
* '''Waiting on code updates from developer'''
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon balance (fix C creation)
+
|Mass flux regridding fix in MAPL
−
|Sarah Safieddine (MIT)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
−
|Bug fix
+
|GCHP input regridding
 +
|Medium
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02c|v11-02c]]
+
|
 +
*[https://github.com/GEOS-ESM/MAPL/pull/2056 GEOS-ESM/MAPL PR #2056]
  
 
|-valign="top"
 
|-valign="top"
−
|Other N, C, etc. balance
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
−
|Barron Henderson (EPA)
+
|Haihui Zhu (WashU)
−
|External script
+
|Aerosols
 +
|Medium
 +
|Delivered<br>Aug 2023
 
|
 
|
 +
*[https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1292/ Zhu et al., EGUsphere, submitted 2023.]
 +
*[https://github.com/geoschem/geos-chem/pull/1902 geos-chem PR #1902]
 +
*'''Currently on hold, as this update requires further modifications in the Cloud-J repository'''
  
 
|-valign="top"
 
|-valign="top"
−
|Halogen chemistry updates
+
|Capture all trop and PBL height changes in budget diagnostics
−
|Tom&aacute;s Sherwen (York)<br>Johan Schmidt (Harvard)<br>[[Chemistry Issues|Oxidants and Chemistry WG]]
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
−
|Science
+
|Diagnostics
 +
|Medium
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02d|v11-02d]]
+
|
 +
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 +
 
 +
|}
 +
 
 +
== Ready to go in ==
 +
 
 +
Features listed in this table are ready to go in but have either not been delivered or are not yet prioritized for integration into GEOS-Chem.
 +
 
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Sulfur oxidation by reactive halogens
+
|Geologic emission of ethane and propane
−
|Qianjie Chen (UW)
+
|Matthew Rowlinson and Mat Evans(York)
−
|Science
+
|Emissions
 +
|Delivered<br>Jan 2023
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02d|v11-02d]]
+
*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
−
*Implement as part of halogen chemistry
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[Aerosol_optical_properties#Add_BC_absorption_enhancement_factor|Update density of BC to 1.8 and add absorption enhancement factor in input.geos]]
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
|Xuan Wang (MIT)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
 +
|Delivered<br>Feb 2021
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2016)
+
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
−
*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]]
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|Lee Murray (NASA GISS/LDEO)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
−
|Science
+
|Emissions
 +
|Delivered<br>Jul 2021
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
+
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
−
|[[UCX_chemistry_mechanism#v11-02|Remove initial stratospheric 2D mixing ratio option]]
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
−
|Seb Eastham (Harvard)
+
|Shixian Zhai (Harvard)
−
|Science
+
|Emissions
 +
|Delivered
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
+
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
  
 
|-valign="top"
 
|-valign="top"
−
|[[UCX_chemistry_mechanism#UCX_stratospheric_water_boundary_condition_update|UCX stratospheric water boundary condition update]]
+
|DMS Chemistry
−
|Chris Holmes (UC Irvine)<br>Seb Eastham (Harvard)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
−
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
 
−
*Delivered to GCST (Jan 2017)
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate and nitrate simulation]], including
+
|Organic acids (RCOOH)
−
*[[Sulfate_aerosols#Metal_catalyzed_oxidation_of_SO2|Metal catalyzed oxidation of SO2]] (as a switch)
+
|Katie Travis (NASA)
−
|Becky Alexander (UW)
+
|Chemistry
−
|Science
+
|Not delivered
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Rn-Pb-Be_simulation#Radon_flux_diagnostic|Radon flux diagnostic]]
+
|Improve carbon & nitrogen conservation in reactions
−
|[[GCST]]
+
|Kelvin Bates (Harvard)
−
|Benchmarking
+
|Chemistry
 +
|Not delivered
 
|
 
|
−
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
 
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Mercury updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to Hg chemistry from Horowitz et al. (2017)
+
|Blowing snow sea salt in TOMAS
−
|Hannah Horowitz (U. Washington)<br>Colin Thackray (Harvard)<br>Rebecca Stern (Harvard)
+
|Betty Croft (Dalhousie)
−
|Science
+
|Aerosols
 +
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Year 2010 ocean Hg boundary conditions from MITgcm
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
−
|Hannah Horowitz (Harvard)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
−
|Science
+
|Hg simulation
 +
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Historical products emissions from Zhang et al. (2016), should become default
+
|WRF-GC Hg simulation
−
|Colin Thackray (Harvard)
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
−
|Science
+
|Hg simulation<br>WRF-GC
 +
|Not delivered
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Transport updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|GEOS resolution & subgrid convection
+
|Updated HgII gas-partical partitioning
−
|Karen Yu (Harvard)
+
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
−
|Science
+
|Hg simulation
 +
|Not delivered
 
|
 
|
−
 
+
*Should be option, not default
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Emission updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|OMI-based Volcanic emissions 2005-2012
+
|Dry deposition to F90 (readability)
−
|Jun Wang (U. Iowa)
+
|Chris Holmes (FSU)
−
|Science
+
|Dry deposition
 +
|Not delivered
 
|
 
|
−
*Delivered to Christoph Keller?
+
 
 +
|}
 +
 
 +
== Almost there (< 6 months) ==
 +
 
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
 +
 
 +
{|border=1 cellspacing=0 cellpadding=5
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[[EDGAR_v4.3_anthropogenic_emissions|EDGAR v4.3.1 emissions]]
+
|Replace ISORROPIA with [https://gmd.copernicus.org/preprints/gmd-2023-159/gmd-2023-159.pdf HTEPv1.0]
−
|Chi Li (Dalhousie)
+
|Seb Eastham (MIT)<br>Lizzie Lundgren (Harvard)
−
|Science
+
|Aerosol thermodynamics
 
|
 
|
−
*Delivered to GCST (Nov 2016)
+
*Will be git submodule
  
 
|-valign="top"
 
|-valign="top"
−
|EPA-derived BC/OA emissions over US (1990-2012)
+
|PPN+hv, PPN+OH
−
|David Ridley (MIT)<br>Chi Li (Dalhousie)
+
|Robert Ryan (UCL)
−
|Science
+
|Chemistry
 
|
 
|
−
*Need to coordinate between two versions
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[CAC_anthropogenic_emissions#Historical_emissions|Historical CAC emissions]]
+
|MBO
−
|Chi Li (Dalhousie)
+
|Michael Vermeuel (UMN)
−
|Science
+
|Chemistry
 
|
 
|
−
*Delivered to GCST (Nov 2016)
 
  
 
|-valign="top"
 
|-valign="top"
−
|Ammonia emissions from Arctic birds
+
|Initial conditions for CH4 correcting background and stratospheric biases
−
|Betty Croft (Dalhousie)
+
|Todd Mooring (Harvard)
−
|Science
+
|Methane simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Fabien Paulot (NOAA/GFDL)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Aerosols<br>Structural
 
|
 
|
−
*Data files delivered to GCST (Jan 2016)
+
*Ongoing
−
*Needs to be implemented via HEMCO
+
  
 
|-valign="top"
 
|-valign="top"
−
|[http://www.atmos-chem-phys.net/16/2819/2016/ A snow NOx source from deep snowpack]
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
|Betty Croft (Dalhousie)
−
|Science
+
|Aerosols
 
|
 
|
−
*Implemented in v9-01-01
 
−
*Needs to be added as a HEMCO extension
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
−
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
+
|Betty Croft (Dalhousie)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[MASAGE_NH3_inventory#Non-agricultural_NH3_for_use_with_MASAGE|Non-agricultural NH3 for use with MASAGE]]
+
|ML algorithms for bulk aerosols
−
|Amos Tai (CUHK)
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Radon emission update
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
−
|Bo Zhang (NIA/NASA Langley)
+
|Shixian Zhai (Harvard)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Global ethane emissions
+
|Updates to Hodzic SOA scheme
−
|Zitely Tzompa-Sosa (CSU)
+
|Jared Brewer (Harvard)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Inefficient combustion emissions in Africa (DICE-Africa inventory)
+
|Automated reduction in isoprene scheme
−
|Eloise Marais (U. Birmingham)<br>Christine Wiedinmyer (NCAR)
+
|Dan Westervelt (Lamont-Doherty)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Trash burning emissions
+
|Brown carbon chemsitry
−
|Eloise Marais (U. Birmingham)<br>Christine Wiedinmyer (NCAR)
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|GFAS biomass burning emissions
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
−
|Mat Evans (York)
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
−
|Science
+
|Convection
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|MEIC emissions over China
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
−
|Jonathan Moch (Harvard), Loretta Mickley (Harvard)
+
|Jintai Lin (PKU)
−
|Science
+
|Emissions
 
|
 
|
−
 
+
*Horizontal resolution: 5km, temporal resolution: JJA mean
−
|-
+
*monthly data will be available at a later stage; please contact us
−
!colspan="4" bgcolor="#CCFFFF"|Deposition/surface updates
+
−
 
+
  
 
|-valign="top"
 
|-valign="top"
−
|Harmonizing Henry's Law coefficients across wet and dry deposition
+
|Updated biomass burning emission factors and species
−
|[[GCST]]
+
|Tess Carter (MIT)
−
|Science
+
|Emissions
 
|
 
|
−
 
−
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Aerosols_Working_Group#Sedimentation_of_stratospheric_aerosols|Sedimentation of stratospheric aerosols]]
+
|Updated offline sea salt emissions
−
|Sebastian Eastham (Harvard)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
−
|Science
+
|Emissions
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[GEOS-Chem_species_units|Uniformity of units]]
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
−
|[[GCST]]
+
|Sam Silva (MIT)
−
|Structural
+
|Emissions &<br>Science
 
|
 
|
−
*Phase 2 (unit uniformity throughout chemistry) to be implemented after Flexchem
+
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
−
*Phase 3 (unit uniformity in some specialty simulations) will be implemented in pieces with input from 3rd party developers
+
*Needs to be updated to a more recent GEOS-Chem version
−
*Phase 4 (removal of area and area-dependent State_Met variables) will be ongoing
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[GEOS-Chem_Output_Files#NetCDF_File_Format|NetCDF Output Phase 3a: Output diagnostics in NetCDF format]]
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
−
|[[GCST]]
+
|Bob Yantosca (Harvard)
−
|Structural
+
|Model performance
 
|
 
|
 +
*Ongoing (will be done as time allows)
  
 
|-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]]
+
|Retire all BPCH diagnostics
−
|[[GCST]]<br>Christoph Keller
+
|Bob Yantosca (Harvard)
−
|Bug fix/Structural
+
|Diagnostics
 
|
 
|
−
 
+
*Can be done following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
+
  
 
|-valign="top"
 
|-valign="top"
−
|Additional modifications for [[FlexChem]], including:
+
|Assess memory leak in GCHP
−
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, UCX, SOA, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Killian Murphy (York)
−
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Model performance
−
|Mike Long (Harvard)<br>[[GCST]]
+
−
|Structural
+
 
|
 
|
 +
*NOTE: Most memory leaks in GCHP have been fixed by [https://github.com/geoschem/geos-chem/pull/1353 geoschem/geos-chem PR #1353].  Need to assess if any memory leaks still remain.
  
 
|-valign="top"
 
|-valign="top"
−
|FlexGrid: Use HEMCO I/O and regridding capabilities to read and regrid met fields
+
|Hybrid MPI-OpenMP in GCHP
−
|Jiawei Zhuang (Harvard)<br>Jintai Lin (PKU)
+
|Seb Eastham (MIT)<br>Killian Murphy (York)
−
|Structural
+
|Model performance
 
|
 
|
−
*Delivered to GCST (Oct 2016)
 
  
 
|-valign="top"
 
|-valign="top"
−
|Merge standard simulation with specialty simulations for OVOC, acids, aromatics, dicarbonyls, terpenes
+
|Improve run directory templating and creation with init_rd.sh and shared directories
−
|Dylan Millet (UMN)<br>Xin Chen (UMN)
+
|Jourdan He (WashU)
−
|Science
+
|Run directories
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Nested CO2, CH4, Hg, TOMAS, adjoint, etc.
+
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc  
−
|[[Nested Model Working Group]]
+
|GCST?
−
|Science
+
|Documentation
 
|
 
|
  
 
|}
 
|}
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 17:19, 11 May 2017 (UTC)
+
== Over the horizon (6-12 months) ==
  
−
==== Defer to v11-03 unless ready in time for v11-02 ====
+
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"
−
|Global evaluation of using LWC and IWC from met fields for wet scavenging
+
|Snow / Icy Bromine
−
|Hongyu Liu (NIA/NASA LARC)<br>Bo Zhang (NIA)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Kz eddy mixing scheme
+
|Monoterpene oxidation scheme
−
|Karen Yu (Harvard)
+
|Jessica Haskins (MIT)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|VBS SOA option
+
|Fire related VOCs including furans
−
|Rokjin Park (SNU)
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Benchmark of stratosphere simulation
+
|Extension of UCX into the mesosphere
−
|Dylan Jones (U. Toronto)
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
−
|Benchmarking
+
|Chemistry
 
|
 
|
−
*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"
 +
|Methane flux ingestion
 +
|Eloise Marais (UCL)
 +
|Chemistry
 +
|
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 17:19, 11 May 2017 (UTC)
+
|-valign="top"
 +
|Dust non-sphericity impacts on surface chem and optical properties
 +
|Inderjeet Singh (WashU)
 +
|Aerosols
 +
|
  
−
==== Not prioritized for v11-02 ====
+
|-valign="top"
 +
|Size-resolved stratospheric aerosol
 +
|Seb Eastham (MIT)
 +
|Aerosols
 +
|
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|- bgcolor="#cccccc"
+
|Extend aerosol settling
−
!width="400px"|Item
+
|Eloise Marais (UCL)
−
!width="250px"|Author(s)
+
|Aerosols
−
!width="80px"|Type
+
|
−
!width="250px"|Status
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[Python code for GEOS-Chem|Python GEOS-Chem output processing and visualization package]]
+
|Stratospheric aerosol APM
−
|Beno&icirc;t Bovy (U. Li&egrave;ge-Belgium)
+
|Fangqun Yu (SUNY)
−
|Software package
+
|Aerosols
 
|
 
|
−
*Users may download, test it, and submit feedback to Benoit Bovy.
 
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt emission from sea ice
+
|Plume-in-grid model
−
|Jiayue Huang (UW)
+
|Hongwei Sun (Harvard)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Re-evaluation of SST dependence of sea salt emissions
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
−
|Jiayue Huang (UW)
+
|Lee Murray (Rochester)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|MOSAIC implementation
+
|Seb aircraft emissions beyond recent 2019 update
−
|Sebastian Eastham (Harvard)
+
|Seb Eastham (MIT)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Discussion_of_LAI_Data_Sources|Update MODIS LAI fields through 2015]]
+
|FRP-based fire emsisions for eastern US at 0.2 deg
−
|Barron Henderson (UF)
+
|Charlie Fite (FSU)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Lightning NOx chemistry parameterization
+
|Hg iodine chemistry
−
|Alicia Gressent (MIT)
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
−
|Science
+
|Hg simulation
 
|
 
|
  
−
|}
+
|-valign="top"
 +
|Hg simulation in GCHP
 +
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
 +
|Hg simulation
 +
|
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 17:19, 11 May 2017 (UTC)
+
|-valign="top"
−
 
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
−
=== Almost there (< 6 months) ===
+
|Yanxu Zhang (Nanjing U.)
−
 
+
|Hg simulation
−
{| 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"
−
|[[POPs simulation#PCB simulation|PCB simulation]]
+
|Dry deposition diagnostics by land cover
−
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
+
|Holly Nowell (FSU)
−
|Science
+
|Diagnostics
 
|
 
|
−
 
−
|}
 
−
 
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 17:40, 11 May 2017 (UTC)
 
−
 
−
=== Over the horizon (6-12 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"
−
|[[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"
 
|-valign="top"
−
|Dust emissions at nested-grid resolution
+
|Isotope simulation for CO and CH4 in GCHP
−
|Yuxuan Wang (Texas A&M)<br>Jun Wang (UNL)
+
|Lee Murray (Rochester)
−
|Science
+
|Carbon simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive meteorological fields with higher resolution (for RCPs)
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
−
|Lee Murray (NASA GISS/LDEO)
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
−
|Science
+
|Emissions<br>CH4 simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Land cover module in GEOS-Chem
+
|Modularization of aerosols code for interface with GOCART in GEOS
−
|Jeffrey Geddes (MIT)<br>Michael Long (Harvard)
+
|Christoph Keller (GMAO)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Improved lightning emission scheme
+
|Improve load balancing in GCHP
−
|Lee Murray (NASA GISS/LDEO)
+
|Seb Eastham (MIT)
−
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive high resolution wind fields for sea salt
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
−
|[[GEOS-Chem Support Team]]
+
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
−
|Science
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Cl chemistry updates
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
−
|Lyatt Jaegl&eacute; (UW)
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
−
|Science
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Automate redistribution of NOx in HEMCO
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
−
|Lee Murray (NASA GISS/LDEO)
+
|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"
−
|Include Hg in full chemistry
+
|Updates to Aromatic chemistry
−
|Noelle Selin (MIT)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|DMS oxidation scheme updating
+
|Nitrate photolysis
−
|Tom Breider (Harvard)<br>Becky Alexander (U. Washington)<br>[[Chemistry Issues|Oxidants and Chemistry Working Group]]
+
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
−
|Science
+
|Chemistry
 
|
 
|
−
*Currently being worked on by a member of the [http://www.atmos.washington.edu/blog/beckya/group-members/ Alexander group]
 
  
 
|-valign="top"
 
|-valign="top"
−
|Historical Hg emissions (1850-present)
+
|In aerosol chemistry Halogens
−
|Hannah Horowitz (Harvard)
+
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
−
|Science
+
|Chemistry
 
|
 
|
−
*Awaiting completion of David Street's revised 1850-present inventory
 
  
 
|-valign="top"
 
|-valign="top"
−
|Joint CO/CO2/CH4 forward model simulation
+
|Benchmark box model of GC Chemistry
−
|Nicholas Deutscher (U. Wollongong)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Past and future fire emissions under RCPs
+
|Alkyl nitrates Alk7, PHAN
−
|Loretta Mickley (Harvard)<br>Yuhang Wang (GIT)<br>Shiliang Wu (MT)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 
|
 
|
−
*Some regional (western US, Canada, and Alaska) inventories for the 2050s A1B scenario are available by request (Loretta Mickley).
 
−
*Further work on global scale and other scenarios are underway.
 
  
 
|-valign="top"
 
|-valign="top"
−
|Benchmark for 0.25x0.3125 nested NA model
+
|Add stratospheric ozone species to full-chemistry simulations
−
|Jun Wang (UNL)
+
|Lee Murray (Rochester)
−
|Benchmarking
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Emission scheme of dust: subgrid wind variation to remove resolution dependence and better interannual variability
+
|Perchlorate chemistry
−
|David Ridley (MIT)
+
|Yuk Chun Chan (UWAB)
−
|Science
+
|Chemistry
 
|
 
|
−
 
−
|}
 
−
 
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 17:19, 11 May 2017 (UTC)
 
−
 
−
=== Longer term (12-24 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"
−
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate and nitrate simulation]], including
+
|Explicit heterogeneous sulfate chemistry
−
*[[Sulfate_aerosols#Metal_catalyzed_oxidation_of_SO2|Metal catalyzed oxidation of SO2]] (as a switch)
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
−
|Becky Alexander (UW)
+
|Chemistry
−
|Science
+
 
|
 
|
−
*These updates been implemented in v9-02, but have not been successfully merged with HEMCO in v10-01
 
−
*Improvements for the tagged nitrate simulation are in the pipeline
 
  
 
|-valign="top"
 
|-valign="top"
−
|CO2 dependence of stomata conductance in dry deposition
+
|HOx and ozone "emissions" from lightning as option in model to play with
−
|Amos Tai (CUHK)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Ozone damage to vegetation
+
|Sea salt aerosol from sea ice leads
−
|Amos Tai (CUHK)
+
|Hannah Horowitz (U. Illinois)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Bi-directional NH3 emissions
+
|Drought-stress algorithm
−
|Juliet Zhu (CSU)<br>Lin Zhang (PKU)
+
|Wei Li (U. Houston)
−
|Science
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Arsenic simulation
+
|Biomass burning injection height profiles
−
|Shiliang Wu (MT)
+
|Inderjeet Singh (WashU)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Dry deposition: Update the ozone dry deposition scheme
+
|OCIM integration
−
|[http://www.chem.utoronto.ca/wp/murphygroup/ Murphy group] (UofT)
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
−
|Science
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Country-based weekend/weekday variability for EDGAR v4.2
+
|Updating landcover products in GEOS-Chem
−
|Lee Murray (NASA GISS/LDEO)<br>Christoph Keller (Harvard)
+
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
−
|Science
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Resolution-independent lightning NOx scaling
+
|Dry deposition physical improvement
−
|Lee Murray (NASA GISS/LDEO)
+
|Chris Holmes (FSU)
−
|Science
+
|Dry deposition
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Nested-grid model with GEOS-FP at 1/2&deg; x 5/8&deg; resolution
+
|TOMAS WRF-GC in regional Thailand simulation
−
|[[Nested Model Working Group]]
+
|Win Trivitayanurak (Chulalongkorn U)
−
|Structural
+
|Aerosols
 
|
 
|
  
 
|}
 
|}
−
 
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 17:19, 11 May 2017 (UTC)
 

Revision as of 18:08, 21 March 2024

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.

Merged and awaiting release

See the links below for items merged and awaiting release.

Mergeable at any time Version in development
GEOS-Chem no-diff-to-benchmark GEOS-Chem 14.4.0

Feature integration in progress

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

Feature Contributor(s) Model scope Ease of implementation Notes and References
GCHP carbon simulation Melissa Sulprizio (Harvard)
Bob Yantosca (Harvard) 		Carbon Medium
KORUS-AQ emissions for East Asia (as an option) Katie Travis (NASA) Emissions Simple
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech) 		Emissions Simple
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple
  • geos-chem issue #1745
  • Currently on hold while an issue with seasonality in the new CEDS data is being investigated
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions Medium
Remove differences in GC-Classic when breaking up runs in time Lizzie Lundgren (Harvard) GC-Classic Medium
GCHP advection diagnostics Lizzie Lundgren (Harvard) GCHP diagnostics Simple
Only convert units for species that need it Bob Yantosca (Harvard) Unit conversions Medium

Prioritized and in the queue

Features listed in this table are prioritized for integration into GEOS-Chem in the near future.

Feature Contributor(s) Model scope Ease of implementation Delivery status Notes and References
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN) 		Chemistry TBD Delivered
June 2023
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry TBD Not delivered
Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition Yanshun Li (WashU) Aerosols Simple Delivered
Oct 2023
Mass flux regridding fix in MAPL Lizzie Lundgren (Harvard)
Seb Eastham (MIT) 		GCHP input regridding Medium
Parameterization of SNA and OM dry size Haihui Zhu (WashU) Aerosols Medium Delivered
Aug 2023
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics Medium

Ready to go in

Features listed in this table are ready to go in but have either not been delivered or are not yet prioritized for integration into GEOS-Chem.

Feature Contributor(s) Model scope Delivery status Notes and References
Geologic emission of ethane and propane Matthew Rowlinson and Mat Evans(York) Emissions Delivered
Jan 2023
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam(CUHK)
Amos Tai (CUHK) 		Science Delivered
Feb 2021
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor University)
Loretta Mickley (Harvard) 		Emissions Delivered
Jul 2021
  • Data involves many files- need to think about temporal frequency
MEIC (China regional) for 2000-2017 at 0.5x0.625 deg Shixian Zhai (Harvard) Emissions Delivered
  • Need permission from Qiang Zhang (Tsinghua U.) to distribute data
DMS Chemistry Linia Tashmim (UC Riverside)
William Porter (UC Riverside) 		Chemistry Not delivered
Organic acids (RCOOH) Katie Travis (NASA) Chemistry Not delivered
Improve carbon & nitrogen conservation in reactions Kelvin Bates (Harvard) Chemistry Not delivered
Blowing snow sea salt in TOMAS Betty Croft (Dalhousie) Aerosols Not delivered
Australian anthropogenic Hg emissions Stephen MacFarlane (UOW)
Jenny Fisher (UOW)
Hannah Horowitz (U. Illinois)
Viral Shah (Harvard) 		Hg simulation Not delivered
WRF-GC Hg simulation Xiaotian Xu (Nanjing U.)
Yanxu Zhang (Nanjing U.) 		Hg simulation
WRF-GC 		Not delivered
Updated HgII gas-partical partitioning Kaiyun Liu (Tsinghua U.)
Qingru Wu (Tsinghua U.)
Shuxiao Wang (Tsinghua U.) 		Hg simulation Not delivered
  • Should be option, not default
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry deposition Not delivered

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
Replace ISORROPIA with HTEPv1.0 Seb Eastham (MIT)
Lizzie Lundgren (Harvard) 		Aerosol thermodynamics
  • Will be git submodule
PPN+hv, PPN+OH Robert Ryan (UCL) Chemistry
MBO Michael Vermeuel (UMN) Chemistry
Initial conditions for CH4 correcting background and stratospheric biases Todd Mooring (Harvard) Methane simulation
Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism Bob Yantosca (Harvard) Aerosols
Structural
  • Ongoing
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
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
Canopy Physics Model Sam Silva (MIT) Emissions &
Science
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Model performance
  • Ongoing (will be done as time allows)
Retire all BPCH diagnostics Bob Yantosca (Harvard) Diagnostics
Assess memory leak in GCHP Killian Murphy (York) Model performance
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York) 		Model performance
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

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
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
Modularization of aerosols code for interface with GOCART in GEOS Christoph Keller (GMAO) Structural
Improve load balancing in GCHP Seb Eastham (MIT) Model performance
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
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
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
TOMAS WRF-GC in regional Thailand simulation Win Trivitayanurak (Chulalongkorn U) Aerosols
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