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

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(→‎Slated for v11-03)
(→‎Prioritized and in the queue)
 
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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 from IGC8 ==
+
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.
+
−
 
+
−
=== Slated for v11-03 ===
+
−
 
+
−
The following updates are now slated for inclusion into [[GEOS-Chem v11-03]]:
+
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
−
!width="400px"|Feature
+
!width="300px"|Mergeable at any time
−
!width="250px"|Submitted by
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!width="200px"|Version in development
−
!width="100px"|Type
+
−
!width="250px"|Status
+
−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
  
 
|-valign="top"
 
|-valign="top"
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|[[Transport_Working_Group#Common_set_of_tracers_in_GEOS-Chem_and_GEOS|Common set of tracers in GEOS-Chem and GEOS]]
+
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
−
|Transport WG<br>[[GCST]]
+
|align="center"|'''[[GEOS-Chem 14.4.0]]'''
−
|Benchmarking
+
−
|
+
−
*Ready to be added
+
  
−
|-
+
|}
−
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
+
  
−
|-valign="top"
+
== Feature integration in progress ==
−
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
+
−
|Sebastian Eastham (MIT)
+
−
|Science
+
−
|
+
−
*Ready to be added
+
  
−
|-valign="top"
+
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.  
−
|[[Chemistry_Issues#Script_for_evaluating_carbon_balance|Script for checking N, C, etc. balance in chemistry mechanism]]
+
−
|Barron Henderson (EPA)
+
−
|Software
+
−
|
+
  
−
|-
+
{| border=1 cellspacing=0 cellpadding=5
−
!colspan="4" bgcolor="#CCFFFF"|Emissions updates
+
|-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"
−
|[[Volcanic_SO2_emissions_from_Aerocom#OMI-based_volcanic_emissions|OMI-based volcanic emissions 2005-2012]]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|Cui Ge (U. Iowa)<br>Jun Wang (U. Iowa)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
|Science
+
|Emissions
 +
|Simple
 
|
 
|
−
*Delivered to GCST (Nov 2017)
 
−
*Need to implement a fix to handle missing data for the last 3 months of 2012.  Deferred to v11-03.
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Mineral_dust_aerosols#Anthropogenic_PM2.5_dust_source_in_GEOS-Chem|Anthropogenic PM2.5 dust source]]
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
−
|Sajeev Philip (Dalhousie)
+
|Haihui Zhu (WashU)
−
|Science
+
|Aerosols
 +
|Medium
 
|
 
|
−
*Deferred to v11-03. Need to fix an "under-the-hood" issue in HEMCO that causes 1200 Tg of dust to be emitted by this update.
+
*[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]
  
 
|-valign="top"
 
|-valign="top"
−
|[[FINNv1_biomass_burning_emissions|FINN biomass burning emissions for 2014-2016]]
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|Barron Henderson (US EPA)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
−
|Science
+
|Emissions
 +
|Medium
 
|
 
|
−
*Deferred to v11-03, pending receipt of corrected data files
+
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
−
|EPA NEI2011 Version EK
+
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
−
|Zitely Tzompa-Sosa (CSU)<br>Emily Fischer (CSU)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GC-Classic
 +
|Medium
 
|
 
|
−
*Deferred to v11-03; need extra time for validation
+
*[https://github.com/geoschem/HEMCO/issues/18 hemco issue #18]
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent emissions, including:
+
|Replace ISORROPIA with [https://gmd.copernicus.org/articles/17/2197/2024/ HETPv1.0]
−
*Lightning NOx emissions (3-hourly)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (ICL)
−
*Dust emissions (hourly)
+
|Aerosol thermodynamics
−
*Biogenic and sea salt emissions (hourly)
+
|Medium
−
|Randall Martin (Dalhousie)<br>Lee Murray (Rochester)<br>David Ridley (MIT)<br>Jintai Lin (PKU)
+
−
|Science
+
 
|
 
|
−
*Mostly complete, but deferred to v11-03. Need to download data from developers.
+
*[https://github.com/geoschem/geos-chem/issues/2235 geos-chem issue #2235]
  
 
|-valign="top"
 
|-valign="top"
−
|EPA-derived BC/OA emissions over US (1990-2012)
+
|Only convert units for species that need it
−
|David Ridley (MIT)<br>Chi Li (Dalhousie)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Unit conversions
 +
|Medium
 
|
 
|
−
*Need to coordinate between Ridley and Li versions
+
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|Capture all trop and PBL height changes in budget diagnostics
−
|Fabien Paulot (NOAA/GFDL)
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
−
|Science
+
|Diagnostics
 +
|Medium
 
|
 
|
−
*Data files delivered to GCST (Jan 2016)
+
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
−
*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"
+
== Prioritized and in the queue ==
−
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
+
−
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
+
−
|Science
+
−
|
+
  
 +
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
  
−
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
−
|[[MASAGE_NH3_inventory#Non-agricultural_NH3_for_use_with_MASAGE|Non-agricultural NH3 for use with MASAGE]]
+
|-bgcolor="#CCCCCC"
−
|Amos Tai (CUHK)
+
!width="200px"|Feature
−
|Science
+
!width="200px"|Contributor(s)
−
|
+
!width="100px"|Model scope
 +
!width="100px"|Ease of implementation
 +
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Radon emission update
+
|ALK4 & R4N2 chemistry
−
|Bo Zhang (NIA/NASA Langley)
+
|Jared Brewer (UMN)
−
|Science
+
|Chemistry
 +
|TBD
 +
|Not delivered
 
|
 
|
−
*Delivered to GCST (Nov 2017)
+
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
−
*Implementation pending paper submission
+
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]
  
 
|-valign="top"
 
|-valign="top"
−
|GFAS biomass burning emissions
+
|Mass flux regridding fix in MAPL
−
|Mat Evans (York)
+
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
−
|Science
+
|GCHP input regridding
 +
|Medium
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Deposition/surface updates
 
−
 
−
|-valign="top"
 
−
|Wet scavenging in mixed-phase clouds
 
−
|Bo Zhang (NIA/NASA Langley)
 
−
|Science
 
 
|
 
|
−
*Delivered to GCST (Nov 2017)
+
*[https://github.com/geoschem/GCHP/issues/377 GCHP Issue #377]
−
*Only applied/tested for Pb
+
*'''Currently on hold, as the submitted update results in zero diff'''
−
*Implementation pending paper submission
+
−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt aerosol alkalinity
+
|New version of CEDS at 0.1 deg
−
|Qianjie Chen (UW)<br>Becky Alexander (UW)<br>Xuan Wang (Harvard)
+
|Dandan Zhang (WashU)
−
|Science
+
|Emissions
 +
|Simple
 +
|Delivered
 
|
 
|
−
*UW version delivered to GCST (Nov 2017)
+
*[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 by the authors.'''
  
−
|-valign="top"
+
|}
−
|VBS SOA option
+
−
|Rokjin Park (SNU)
+
−
|Science
+
−
|
+
  
−
|-
+
== Ready to go in ==
−
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
+
  
−
|-valign="top"
+
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.
−
|Oxidant fields from v10 for 2006-2012
+
−
*3D chemical source for CO2, CO
+
−
*OH for tagged CO & CH4
+
−
|Dylan Jones (UofT)
+
−
|Science
+
−
|
+
−
*Will make data files available on ftp site
+
  
−
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
−
|Year 2010 ocean Hg boundary conditions from ocean model
+
|-bgcolor="#CCCCCC"
−
|Hannah Horowitz (Harvard)
+
!width="200px"|Feature
−
|Science
+
!width="200px"|Contributor(s)
−
|
+
!width="100px"|Model scope
 +
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Historical products emissions from Zhang et al. (2016), should become default
+
|KORUS-AQ emissions for East Asia (as an option)
−
|Colin Thackray (Harvard)
+
|Katie Travis (NASA)
−
|Science
+
|Emissions
 +
|Simple
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|AMAP/UNEP 2035 for Hg simulation
+
|Geologic emission of ethane and propane
−
|Helene Angot (MIT)
+
|Matthew Rowlinson and Mat Evans(York)
−
|Science
+
|Emissions
 +
|Delivered<br>Jan 2023
 
|
 
|
 +
*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"
−
|Africa nested-grid for GEOS-FP and MERRA-2
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
|Eloise Marais (U. Birmingham)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
 +
|Delivered<br>Feb 2021
 
|
 
|
−
*Delivered to GCST (Dec 2017)
+
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
−
|West Africa nested-grid for GEOS-FP
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|Mat Evans (York)<br>Eleanor Morris (York)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
−
|Science
+
|Emissions
 +
|Delivered<br>Jul 2021
 
|
 
|
 +
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate simulation]]
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
−
|Becky Alexander (UW)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
−
|Science
+
|Chemistry
 +
|Delivered<br>June 2023
 
|
 
|
 +
*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
 +
*Implemented in v12.5, needs to be brought up to current version
  
 
|-valign="top"
 
|-valign="top"
−
|Arsenic simulation
+
|DMS Chemistry
−
|Shiliang Wu (MT)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
−
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Updated flux diagnostics
+
|Organic acids (RCOOH)
−
|Chris Holmes (Florida State)<br>[[GCST]]
+
|Katie Travis (NASA)
−
|Structural/<br>Benchmarking
+
|Chemistry
 +
|Not delivered
 
|
 
|
−
*Deferred to v11-03
 
  
 
|-valign="top"
 
|-valign="top"
−
|Additional modifications for [[FlexChem]], including:
+
|Improve carbon & nitrogen conservation in reactions
−
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Kelvin Bates (Harvard)
−
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Chemistry
−
|[[GCST]]
+
|Not delivered
−
|Structural
+
 
|
 
|
−
*Work not started yet
 
  
 
|-valign="top"
 
|-valign="top"
−
|Benchmark of stratospheric simulation
+
|Blowing snow sea salt in TOMAS
−
|Dylan Jones (U. Toronto)
+
|Betty Croft (Dalhousie)
−
|Benchmarking
+
|Aerosols
 +
|Not delivered
 
|
 
|
−
*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"
−
|Add total column O3 to benchmarks
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
−
|Chris Holmes (FSU)<br>[[GCST]]
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
−
|Benchmarking
+
|Hg simulation
 +
|Not delivered
 
|
 
|
−
*Deferred until v11-03
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[GEOS-Chem_species_units|Uniformity of units]]
+
|WRF-GC Hg simulation
−
|[[GCST]]
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
−
|Structural
+
|Hg simulation<br>WRF-GC
 +
|Not delivered
 
|
 
|
−
*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
+
|Updated HgII gas-partical partitioning
−
|Andy Jacobson (NOAA/ESRL)
+
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
−
|Structural
+
|Hg simulation
 +
|Not delivered
 
|
 
|
−
*Delivered to GCST (May 2017)
+
*Should be option, not default
  
 
|-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]]
+
|Dry deposition to F90 (readability)
−
|[[GCST]]<br>Christoph Keller
+
|Chris Holmes (FSU)
−
|Bug fix/Structural
+
|Dry deposition
 +
|Not delivered
 
|
 
|
  
−
|-
+
|}
−
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
+
  
−
|-valign="top"
+
== Almost there (< 6 months) ==
−
|[[FlexGrid|FlexGrid: Use HEMCO to read met fields and enable nested simulations over any custom domains]]
+
−
|Jiawei Zhuang (Harvard)<br>Jintai Lin (PKU)
+
−
|Structural
+
−
|
+
−
*Delivered to GCST (Oct 2016)
+
−
*Deferred to v11-03
+
  
−
|-valign="top"
+
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
−
|[[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]]
+
−
|Seb Eastham (Harvard)
+
−
|Science
+
−
|
+
−
*Delivered to GCST (May 2017)
+
  
−
|-valign="top"
+
{|border=1 cellspacing=0 cellpadding=5
−
|Archival of roughness length for temperature z0T
+
−
|[[GCST]]
+
−
|Met processing
+
−
|
+
−
*Work not started yet
+
−
|}
+
−
 
+
−
=== Not prioritized for v11-03 ===
+
−
 
+
−
{| 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="100px"|Type
+
!width="100px"|Model scope
−
!width="250px"|Status
+
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt emission from sea ice
+
|PPN+hv, PPN+OH
−
|Jiayue Huang (UW)
+
|Robert Ryan (UCL)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Re-evaluation of SST dependence of sea salt emissions
+
|MBO
−
|Jiayue Huang (UW)
+
|Michael Vermeuel (UMN)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Discussion_of_LAI_Data_Sources|Update MODIS LAI fields through 2015]]
+
|Initial conditions for CH4 correcting background and stratospheric biases
−
|Barron Henderson (UF)
+
|Todd Mooring (Harvard)
−
|Science
+
|Methane simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Lightning NOx chemistry parameterization
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Alicia Gressent (MIT)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Aerosols<br>Structural
 
|
 
|
−
 
+
*Ongoing
−
|}
+
−
 
+
−
=== Almost there (< 6 months) ===
+
−
 
+
−
{| border=1 cellspacing=0 cellpadding=5
+
−
|- bgcolor="#cccccc"
+
−
!width="400px"|Item
+
−
!width="250px"|Author(s)
+
−
!width="100px"|Type
+
−
!width="250px"|Status
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.geosci-model-dev-discuss.net/gmd-2017-125/ GEOS resolution & subgrid convection]
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
|Karen Yu (Harvard)
+
|Betty Croft (Dalhousie)
−
|Science
+
|Aerosols
 
|
 
|
−
*To be installed by Bob Yantosca (Harvard), tested by Tailong He (Toronto)
 
  
 
|-valign="top"
 
|-valign="top"
−
|Updated chlorine chemistry
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
−
|Xuan Wang (Harvard)
+
|Betty Croft (Dalhousie)
−
|Science
+
|Aerosols
 
|
 
|
−
*Defer until the paper is submitted
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Chemistry_Issues#Correcting_ozone_from_the_height_of_the_lowest_model_level_to_the_surface|ND49 timeseries diagnostic for correcting ozone from the height of the lowest model level to 10m]]
+
|ML algorithms for bulk aerosols
−
|Katie Travis (MIT)
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
−
|Structural
+
|Aerosols
 
|
 
|
−
*Defer until the paper is submitted
 
  
 
|-valign="top"
 
|-valign="top"
−
|Aromatics and dicarbonyl chemistry
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
−
|William Porter (MIT)<br>Tzung-May Fu (PKU)
+
|Shixian Zhai (Harvard)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Diagnostic for species lifetime
+
|Updates to Hodzic SOA scheme
−
|[[GCST]]
+
|Jared Brewer (Harvard)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Document chemical mechanism in KPP file
+
|Automated reduction in isoprene scheme
−
|Mat Evans (York)
+
|Dan Westervelt (Lamont-Doherty)
−
|Structural
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon bottom up fluxes: anthro, ocean, land
+
|Brown carbon chemsitry
−
|Kevin Bowman (JPL)
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|GISS-GC (ICECAP/GCAP2) in standard model + benchmark
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
−
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
−
|Science
+
|Convection
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC offline coupling in standard model + benchmark
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
−
|Rokjin Park (SNU)<br>Daniel Rothenberg (MIT)
+
|Jintai Lin (PKU)
−
|Science
+
|Emissions
 
|
 
|
 +
*Horizontal resolution: 5km, temporal resolution: JJA mean
 +
*monthly data will be available at a later stage; please contact us
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC GCHP
+
|Updated biomass burning emission factors and species
−
|Daniel Rothenberg (MIT)
+
|Tess Carter (MIT)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Injection height for fire emissions
+
|Updated offline sea salt emissions
−
|Juliet Zhu (CSU)<br>Emily Fischer (CSU)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Diurnal variability for NH3
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
−
|Henze group
+
|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"
−
|OH + NO2 rate update
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
−
|Barron Henderson (EPA)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Model performance
 
|
 
|
 +
*Ongoing (will be done as time allows)
  
 
|-valign="top"
 
|-valign="top"
−
|N2O5 hydrolysis updates
+
|Retire all BPCH diagnostics
−
|Viral Shah (UW)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Diagnostics
 
|
 
|
 +
*Can be done following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]
  
 
|-valign="top"
 
|-valign="top"
−
|Land cover module: Harmonized biosphere-atmosphere exchange and implementing CLM or manual land cover change experiments
+
|Assess memory leak in GCHP
−
|Jeff Geddes (BU)
+
|Killian Murphy (York)
−
|Science
+
|Model performance
 
|
 
|
 +
*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"
−
|H2 chemistry in UCX
+
|Hybrid MPI-OpenMP in GCHP
−
|Chris Holmes (FSU)
+
|Seb Eastham (MIT)<br>Killian Murphy (York)
−
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Uptake of HNO3 onto coarse-mode sea salt
+
|Improve run directory templating and creation with init_rd.sh and shared directories
−
|Prasad Kasibhatla (Duke)
+
|Jourdan He (WashU)
−
|Science
+
|Run directories
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Photolysis of NITs
+
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
−
|Prasad Kasibhatla (Duke)
+
|GCST?
−
|Science
+
|Documentation
 
|
 
|
  
−
|-valign="top"
+
|}
−
|[[POPs simulation#PCB simulation|PCB simulation]]
+
−
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
+
−
|Science
+
−
|
+
  
 +
== Over the horizon (6-12 months) ==
  
−
|-valign="top"
+
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.
−
|New EDGAR sectoral inventory for Hg (1970-2012)
+
−
|Amanda Giang (MIT)
+
−
|Science
+
−
|
+
  
−
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
−
|Wet deposition parameterizations: pH dependency, Henry's law coefficients, etc.
+
|- bgcolor="#cccccc"
−
|Sarah Safieddine (MIT)<br>GCST
+
!width="200px"|Feature
−
|Science
+
!width="200px"|Contributor(s)
−
|
+
!width="100px"|Model scope
 +
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Archive GISS met fields from RCP scenarios for community
+
|Snow / Icy Bromine
−
|Lee Murray (Rochester)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Online O3-LAI coupling in GEOS-Chem
+
|Monoterpene oxidation scheme
−
|Amos Tai (CUHK)
+
|Jessica Haskins (MIT)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Clean up SOA diagnostics
+
|Fire related VOCs including furans
−
|GCST
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
−
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Calculation consistency throughout code: surface area, HGF (via species database)
+
|Extension of UCX into the mesosphere
−
|GCST
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
−
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Harmonizing Henry's Law coefficients across wet and dry deposition
+
|Methane flux ingestion
−
|[[GCST]]
+
|Eloise Marais (UCL)
−
|Science
+
|Chemistry
 
|
 
|
−
*Work not started yet. Will need input from the community.
 
−
 
−
|}
 
−
 
−
=== Over the horizon (6-12 months) ===
 
−
 
−
{| border=1 cellspacing=0 cellpadding=5
 
−
|- bgcolor="#cccccc"
 
−
!width="400px"|Item
 
−
!width="250px"|Author(s)
 
−
!width="100px"|Type
 
−
!width="250px"|Status
 
  
 
|-valign="top"
 
|-valign="top"
−
|MEIC emissions over China (2000-2015)
+
|Dust non-sphericity impacts on surface chem and optical properties
−
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
+
|Inderjeet Singh (WashU)
−
|Science
+
|Aerosols
 
|
 
|
−
*Implementation delayed until MEIC paper is published
 
  
 
|-valign="top"
 
|-valign="top"
−
|GISS-GC GCHP
+
|Size-resolved stratospheric aerosol
−
|Lee Murray (Rochester)
+
|Seb Eastham (MIT)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Dynamic fire modeling/prediction
+
|Extend aerosol settling
−
|Shiliang Wu (MNT)
+
|Eloise Marais (UCL)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Interannually varying ocean model BCs for Hg from ocean model
+
|Stratospheric aerosol APM
−
|Colin Thackray (Harvard)
+
|Fangqun Yu (SUNY)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|PAH & PFCA simulations
+
|Plume-in-grid model
−
|Peter Ivatt (York)<br>Mat Evans (York)<br>Noelle Selin (MIT)<br>Colin Thackray (Harvard)
+
|Hongwei Sun (Harvard)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|CH4 in full chemistry simulation
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
−
|Seb Eastham (Harvard)
+
|Lee Murray (Rochester)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Standard future land use maps (PFT, LAI) for RCP/CMIP6 simulations
+
|Seb aircraft emissions beyond recent 2019 update
−
|Colette Heald (MIT)<br>Loretta Mickley (Harvard)
+
|Seb Eastham (MIT)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive GISS met fields from CMIP6 scenarios for community
+
|FRP-based fire emsisions for eastern US at 0.2 deg
−
|Lee Murray (Rochester)
+
|Charlie Fite (FSU)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to cold-temperature deposition
+
|Hg iodine chemistry
−
|Lyatt Jaegle (UW)
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Simple parameterization for CO2-O3 dependence of stomatal resistance
+
|Hg simulation in GCHP
−
|Amos Tai (CUHK)
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|NH3 emissions over China
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
−
|Lin Zhang (PKU)
+
|Yanxu Zhang (Nanjing U.)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Using GEOS-Chem within GEOS-5
+
|Dry deposition diagnostics by land cover
−
|Loretta Mickley (Harvard)
+
|Holly Nowell (FSU)
−
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
+
|Dry deposition process diagnostics
−
|Beata Bukosa (Wollongong)<br>Dylan Jones (UofT)
+
|Holly Nowell (FSU)
−
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Seasonal EMEP emissions back to 1980
+
|Isotope simulation for CO and CH4 in GCHP
−
|Mat Evans (York)
+
|Lee Murray (Rochester)
−
|Science
+
|Carbon simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to NO2 dry deposition
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
−
|Brian Boys (Dalhousie)
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
−
|Science
+
|Emissions<br>CH4 simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|APM update and integration with most recent GEOS-Chem version
+
|Modularization of aerosols code for interface with GOCART in GEOS
−
|Gan Luo (SUNY Albany)
+
|Christoph Keller (GMAO)
 
|Structural
 
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Cosmogenic tracer production
+
|Improve load balancing in GCHP
−
|Lee Murray (Rochester)
+
|Seb Eastham (MIT)
−
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Explore resolution-consistent dust emissions
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
−
*Make high-res concentrations or mass fluxes available offline, implement in met field processing
+
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
−
|David Ridley (MIT)<br>GCST<br>Nested Model WG
+
|Transport
−
|Science
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Dust emissions at nested-grid resolutions
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
−
|Yuxuan Wang (U. Houston)<br>Jun Wang (U. Iowa)
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
−
|Science
+
|Transport
 
|
 
|
−
*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]]
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
−
|Duncan Fairlie (NASA/LARC)  
+
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
−
|Science
+
|Transport
 
|
 
|
  
 
|}
 
|}
  
−
=== Longer term (12-24 months)===
+
== Longer term (12-24 months)==
 +
 
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
−
!width="400px"|Item
+
!width="200px"|Feature
−
!width="250px"|Author(s)
+
!width="200px"|Contributor(s)
−
!width="100px"|Type
+
!width="100px"|Model scope
−
!width="250px"|Status
+
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|GCHP stretched grid
+
|Updates to Aromatic chemistry
−
|Jiawei Zhuang (Harvard)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|1/8 degree nested-grid simulations with GEOS-FP
+
|Nitrate photolysis
−
|Nested Model WG
+
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
−
|Science
+
|Chemistry
 
|
 
|
−
*Wait for more interest
 
  
 
|-valign="top"
 
|-valign="top"
−
|Embedding GEOS-Chem into CESM
+
|In aerosol chemistry Halogens
−
|Jean-Francois Lamarque (NCAR)
+
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Adjoint of carbon cycle simulation in GCHP
+
|Benchmark box model of GC Chemistry
−
|Kevin Bowman (JPL)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Isoprene chemistry v2 (new Caltech update)
+
|Alkyl nitrates Alk7, PHAN
−
|Kelvin Bates (Caltech)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Contemporary land cover: developing historical and updated GEOS-Chem land cover maps based on satellite remote sensing
+
|Add stratospheric ozone species to full-chemistry simulations
−
|Jeff Geddes (BU)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Farquhar-Ball-Barry model to calculate stomatal resistance
+
−
|Amos Tai (CUHK)<br>Jeff Geddes (BU)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Impacts of chemistry on ecosystem/carbon cycle
+
−
|Kevin Bowman (JPL)<br>Anthony Bloom (JPL)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Improved lightning emission scheme
+
 
|Lee Murray (Rochester)
 
|Lee Murray (Rochester)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Resolution-independent lightning NOx
+
|Perchlorate chemistry
−
|Lee Murray (Rochester)
+
|Yuk Chun Chan (UWAB)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Bidirectional NH3 emissions
+
|Explicit heterogeneous sulfate chemistry
−
|Juliet Zhu (CSU)
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Country-based weekday/weekend variability for EDGAR 4.2
+
|HOx and ozone "emissions" from lightning as option in model to play with
−
|Lee Murray (Rochester)<br>Christoph Keller (Harvard)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Update keytone photolysis
+
|Sea salt aerosol from sea ice leads
−
|Jared Brewer (CSU)<br>Emily Fischer (CSU)
+
|Hannah Horowitz (U. Illinois)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Small alkyl nitrates
+
|Drought-stress algorithm
−
|Jenny Fisher (Wollongong)
+
|Wei Li (U. Houston)
−
|Science
+
 
|
 
|
−
 
−
|-valign="top"
 
−
|YIBS-GC chemistry-biosphere-fire coupling
 
−
|Loretta Mickley (Harvard)<br>Xu Yue (IAP)
 
−
|Science
 
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Nitrogen-LAI coupling
+
|Biomass burning injection height profiles
−
|Lin Zhang (PKU)<br>Amos Tai (CUHK)
+
|Inderjeet Singh (WashU)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Implementing humidity/VPD dependence of dry deposition
+
|OCIM integration
−
|Jennifer Murphy (U. Toronto)
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
−
|Science
+
 
|
 
|
−
 
−
|-valign="top"
 
−
|SO2 wet scavenging
 
−
|Duncan Fairlie (NASA Langley)
 
−
|Science
 
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Heterogeneous sulfate production
+
|Updating landcover products in GEOS-Chem
−
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
−
|Science
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|MOSAIC implementation
+
|Dry deposition physical improvement
−
|Sebastian Eastham (Harvard)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Particle size climatology
+
−
|Fangqun Yu (SUNY Albany)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Sea salt/dust size distribution
+
−
|David Ridley (MIT)<br>Colette Heald (MIT)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Updates to GTMM
+
−
|Rebecca Stern (Harvard)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Tracer transport ocean
+
 
|Chris Holmes (FSU)
 
|Chris Holmes (FSU)
−
|Science
+
|Dry deposition
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Include Hg in full chemistry simulation
+
|TOMAS WRF-GC in regional Thailand simulation
−
|Noelle Selin (MIT)
+
|Win Trivitayanurak (Chulalongkorn U)
−
|Science
+
|Aerosols
−
|
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|Goddard seasonal weather prediction in GCHP
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|Kevin Bowman (JPL)
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|Science
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|Climate index diagnostics (drought, etc.)
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|Chemistry-ecosystems-climate WG
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|Structural
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|Joint CO/CO2/CH4 simulation
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|Nicholas Deutscher (U. Wollongong)
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|Science
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|Carbon coupling: oceans and terrestrial models
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|Chris Holmes (FSU)
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|Science
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*Ocim-pure physical transport, ECCO-Darwin ocean biogeochemistry
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|DMS oxidation scheme updating
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|Qianjie Chen (UW)<br>Chemistry WG
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|Limiting NH3 uptake due to OA
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|Rachel Silvern (Harvard)
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--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 15:32, 23 May 2018 (UTC)
 

Latest revision as of 20:55, 18 April 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
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech) 		Emissions Simple
Parameterization of SNA and OM dry size Haihui Zhu (WashU) Aerosols Medium
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions Medium
Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4 Lizzie Lundgren (Harvard) GC-Classic Medium
Replace ISORROPIA with HETPv1.0 Lizzie Lundgren (Harvard)
Seb Eastham (ICL) 		Aerosol thermodynamics Medium
Only convert units for species that need it Bob Yantosca (Harvard) Unit conversions Medium
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics 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
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry TBD Not delivered
Mass flux regridding fix in MAPL Tom Clune (GMAO)
Seb Eastham (MIT) 		GCHP input regridding Medium
  • GCHP Issue #377
  • Currently on hold, as the submitted update results in zero diff
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple Delivered
  • geos-chem issue #1745
  • Currently on hold while an issue with seasonality in the new CEDS data is being investigated by the authors.

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
KORUS-AQ emissions for East Asia (as an option) Katie Travis (NASA) Emissions Simple
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
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN) 		Chemistry Delivered
June 2023
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
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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