GEOS-Chem model development priorities: Difference between revisions

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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/2013/index.html International GEOS-Chem Meeting (IGC6)] in May 2013 and has been continuously updated since 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 January 2014 ==
See the links below for items merged and awaiting release.


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. Other items 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 14.5.0]]'''


{| border=1 cellspacing=0 cellpadding=5
|}
|- bgcolor="#cccccc"
 
!width="400px"|Item
== Feature integration in progress ==
!width="300px"|Author(s)
 
!width="400px"|Status
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.
|- bgcolor="#ccffff"
 
!width="400px"|Science updates
{| border=1 cellspacing=0 cellpadding=5  
!width="300px"|
|-bgcolor="#CCCCCC"
!width="400px"|
!width="200px"|Feature
|-
!width="200px"|Contributor(s)
|[[UCX chemistry mechanism|UCX strat chem mechanism]], includes:
!width="100px"|Model scope
*[[UCX chemistry mechanism|Stratospheric chemistry]]
!width="100px"|Ease of implementation
*[[UCX chemistry mechanism|Stratospheric aerosols]]
!width="300px"|Notes and References
*[[UCX chemistry mechanism|Fast-JX photolysis mechanism]]
 
|UCX: Sebastian Eastham (MIT)<br>Fast-JX: Jingqiu Mao (Princeton)
|-valign="top"
|ALK4 & R4N2 chemistry
|Jared Brewer (UMN)
|Chemistry
|Simple
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Oct 2013)
*[https://github.com/geoschem/geos-chem/pull/2352 geos-chem PR #1625]
*Currently being incorporated into [[GEOS-Chem v10-01]]
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]
|-
 
|[[Coupling GEOS-Chem with RRTMG|Online Radiative Transfer in GEOS-Chem]]
|-valign="top"
|David Ridley (MIT)<br>Colette Heald (MIT)
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Yi Wang (Iowa)<br>Jun Wang (Iowa)
|Emissions
|Medium
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Oct 2013)
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
*Slated for inclusion in [[GEOS-Chem v10-01]]
*Incorporates new met field TSOIL1
|-
 
|[[EPA/NEI08 North American emissions|NEI 2008 emissions with hourly resolution]]
|-valign="top"
|Katie Travis (Harvard)
|Fix pressure handling in HEMCO standalone
|Melissa Sulprizio (Harvard)
|HEMCO
|Simple
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Summer 2013)
*[https://github.com/geoschem/HEMCO/issues/277 HEMCO issue #277]
*This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
 
|-
|-valign="top"
|[[MEGAN_biogenic_emissions#Update_to_MEGAN2.1_.28Guenther_et_al..2C_2012.29|Update to MEGAN2.1]]
|Fix obspack - not working in 14.4.0
|Dylan Millet (U. Minnesota)
|Bob Yantosca (Harvard)
|Diagnostics
|Medium
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Summer 2013)
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]
*This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
|-valign="top"
|-
|Horizontal flux regridding fix in MAPL
|[[EDGAR anthropogenic emissions|Update to EDGAR 4.2 anthropogenic emissions]]
|Tom Clune (GMAO)
|Meng Li and Qiang Zhang (Tsinghua)<br>Sajeev Philip (Dalhousie)
|GCHP
|Medium
|
|
*Already implemented in a research version of GEOS-Chem.
*[https://github.com/geoschem/MAPL/pull/36 MAPL PR #36]
*Code is ready but needs more documentation and evaluation.
 
|-
|-valign="top"
|[[PAN|PAN / Organics]]
|Cloud-J 7.7.2 for greater flexibility in external models
|Emily Fischer (CSU)
|Lizzie Lundgren (Harvard)
|Photolysis
|Medium
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (May 2013)
*[https://github.com/geoschem/Cloud-J/pull/17 Cloud-J PR #17]
|-
*[https://github.com/geoschem/geos-chem/pull/2342 geos-chem PR #2342]
|CO2 direct effect on isoprene emissions
*[https://github.com/geoschem/geos-chem/pull/2353 geos-chem PR #2553]
|Amos Tai (City University of Hong Kong)
*[https://github.com/geoschem/Cloud-J/pull/19 Cloud-J PR #19]
 
|-valign="top"
|GCHP run directory improvements for mass flux, stretched grid, and GEOS-IT runs
|Lizzie Lundgren (Harvard)
|GCHP
|Medium
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
*[https://github.com/geoschem/geos-chem/pull/2326 geos-chem PR #2326]
|-
 
|Arctic Hg cycling
|-valign="top"
|Jenny Fisher (Wollongong)
|Fixes for GEOS-Chem 14.4 in CESM
|Haipeng Lin (Harvard)<br>Lizzie Lundgren (Harvard)
|CESM
|Medium
|
|
*Code is ready
*[https://github.com/geoschem/geos-chem/pull/2348 geos-chem PR #2348]
|-
*[https://github.com/geoschem/geos-chem/pull/2349 geos-chem PR #2349]
|Criegee intermediate
* More PRs in progress
|Dylan Millet (U. Minnesota)
 
|}
 
== Prioritized and in the queue ==
 
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
 
{| border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
!width="200px"|Feature
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Ease of implementation
!width="100px"|Delivery status
!width="300px"|Notes and References
 
|-valign="top"
|New version of CEDS at 0.1 deg
|Dandan Zhang (WashU)
|Emissions
|Simple
|Delivered June 2024
|
|
*This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
|-
 
|[[Wet_deposition#Impaction_scavenging_for_hydrophobic_BC_and_homogeneous_IN_removal|Impaction scavenging for hydrophobic BC]]
|-valign="top"
|Qiaoqiao Wang (Harvard)
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
|Lizzie Lundgren (Harvard)
|GC-Classic
|Medium
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
|-
|[[Wet_deposition#Impaction_scavenging_for_hydrophobic_BC_and_homogeneous_IN_removal|Homogeneous IN removal]]
|Qiaoqiao Wang (Harvard)
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
*[https://github.com/geoschem/HEMCO/issues/18 HEMCO issue #18]
|-
 
|MASAGE NH3 inventory
|}
|Fabien Paulot (Harvard)
 
== 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 Refereneces
 
 
|-valign="top"
|Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol
|Camilo Serrano (McGill)<br>Andreas Zuend (McGill)
|Aerosols
|Not delivered
|
|
*Code is ready, awaiting delivery to GCST
 
|-
|-valign="top"
|HTAP and hi-res Asian emissions
|Extend aerosol settling
|Qiang Zhang (Tsinghua U.)
|Eloise Marais (UCL)
|Aerosols
|Not delivered
|
|
*Emission files are ready. 
 
*Could potentially be packaged w/ the new [[HEMCO|HEMCO Emissions Component]].
|-valign="top"
|-
|Comment back in Ca, Mg, and K cations in aerosol thermo (HETP)
|Two-way coupling between global and nested GEOS-Chem models
|Becky Alexander (UW)
|Jintai Lin (Peking U.)
|Aerosols
|Not delivered
|
 
|-valign="top"
|Seasalt aerosol from sea ice leads (2002-2011)
|Hannah Horrowitz (UIUC)
|Aerosols
|Not delivered
|
*Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
 
|-valign="top"
|P/L species should not contribute to the error norm
|Obin Sturm (USC)
|Chemistry
|Not delivered
|
 
|-valign="top"
|Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6
|Katie Travis (NASA LARC)
|Chemistry
|Not delivered
|
|
*Could be quickly implemented into G-C (http://www.atmos.pku.edu.cn/acm/two-way.html)
 
|-
|-valign="top"
|Improve temporal resolution of anthropogenic CO2 sources
|Monoterpene oxidation more species & oxidation products
|Ray Nassar (Environment Canada)
|Kevin Bates (CU Boulder)
|Chemistry
|Not delivered
|
|
|-
 
|Replace CASA CO2 biosphere climatology with year-specific fluxes
|-valign="top"
|Ray Nassar (Environment Canada)<br>Dylan Jones (U. Toronto)
|PPN photolysis
|'''''Ray Nassar wrote:'''''
|Eloise Marais (UCL)
:SiB Fluxes are available to replace the old CASA fluxes, courtesy of Janina Messerschmidt et al. New CASA fluxes would also be good, such that the user can select options in the input.geos file.
|Chemistry
|-
|Not delivered
|[[Mineral_dust_aerosols#Surface_chemistry_on_dust|Acid uptake on dust aerosols]]
|T. Duncan Fairlie (NASA/LARC)
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]], on hold until post v9-02
 
|-
|-valign="top"
|UNEP 2010 anthropogenic Hg emissions
|Global organic N dep from various emissions; nitrate aromatics updates
|Shaojie Song (MIT)
|May Fu (SUSTech)
|Chemistry +<br>Deposition
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2014)
 
|-
|-valign="top"
|Historical anthropogenic atmospheric emissions of Hg
|ALK4 from biogenic vs anthro
|Bess Corbitt (Harvard)
|Jared Brewer (UMN)
|Chemistry
|Not delivered
|
|
|-
 
|Subsurface ocean Hg concentration update
|-valign="top"
|Anne Soerensen (Harvard)
|Dry deposition to F90 to improve readability
|Chris Holmes (FSU)
|Dry Deposition
|Not delivered
|
|
|-
 
|NEI 2008 Hg emission inventory
|-valign="top"
|Yanxu Zhang (Harvard)
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Joey Lam  (CUHK)<br>Amos Tai (CUHK)
|Dry deposition
|Delivered<br>Feb 2021
|
|
|-
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
|RRTMG radiative transfer code in [[APM aerosol microphysics]]
 
|Fangqun Yu (SUNY Albany)
|-valign="top"
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
|Chris Holmes (FSU)
|Emissions
|Not delivered
|
 
|-valign="top"
|China agriculture NH3 emissions
|Amos Tai (CUHK)
|Emissions
|Not delivered
|
 
|-valign="top"
|T-dependent anthropogenic VOCs
|May Fu (SUSTech)
|Emissions
|Not delivered
|
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.
 
|-valign="top"
|New source functions for transport tracers beryllium-7 and beryllium-10
|Minjie Zheng (ETH)
|Emissions
|Delivered<br>June 2024
|
*Available at https://zenodo.org/records/8372652
 
|-valign="top"
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Yang Li (Baylor U)<br>Loretta Mickley (Harvard)
|Emissions
|Delivered
|
*Data involves many files- need to think about temporal frequency
 
|-valign="top"
|Australian emissions
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Emissions
|Not delivered
|
|
|-
 
|[[Biomass_burning_emissions#FINNv1|FINN biomass burning emissions]]
|-valign="top"
|Jenny Fisher (Wollongong)<br>Min Huang (JPL)
|Hg geogenic emissions (volcanic, rock weathering)
|Eric Roy (MIT)
|Emissions
|Not delivered
|
|
*This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
 
|-
|-valign="top"
|[[POPs simulation#PAH simulation|Updates to PAH code]]
|Hg biomass burning - FINN2.5 & GFED4
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
|Eric Roy (MIT)
|Emissions
|Not delivered
|
|
*Awaiting delivery of code
 
|-
|-valign="top"
|VBS SOA option
|BCC-GC online
|Rokjin Park (Seoul Nat'l Univ.)
|Lin Zhang (PKU)
|External Model
|Not delivered
|
|
|-
 
|Tagged sulfate and nitrate simulation
|-valign="top"
|Becky Alexander (U. Washington)
|GC-YIBS with online fire emissions
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
|External Model
|Not delivered
|
|
|-
 
|[[Mineral_dust_aerosols#Improved_dust_size_distribution_scheme|Improved dust size distribution scheme]]
|-valign="top"
|Li Zhang (Colorado U.)<br>Daven Henze (Colorado U.)
|GISS-GC offline (GCAP)
|Lee Murray (Rochester)
|GCAP
|Not delivered
|
|
*Delivered to GCST (Jan 2014)
 
|- bgcolor="#ccffff"
|-valign="top"
!width="400px"|Structural/programming updates
|Archived TCR-2 OH fields for carbon simulations
!width="300px"|
|Kazu Miyazaki (JPL)
!width="400px"|
|Input data
|-
|Not delivered
|[[Grid-independent GEOS-Chem]]: Packaging ESMF/MAPL
|[[GEOS-Chem Support Team]]<br>GMAO
|
|
*Need to synchronize the latest GIGC development back into the existing G-C repository
*This will be the default OH, but users will have the option of selecting other OH fields
*This will be an ongoing process that will occur simultaneously as the above science updates are brought into GEOS-Chem.
 
|}
|}


--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
== Almost there (< 6 months) ==


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


{| border=1 cellspacing=0 cellpadding=5
{|border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
|- bgcolor="#cccccc"
!width="400px"|Item
!width="200px"|Feature
!width="300px"|Author(s)
!width="200px"|Contributor(s)
!width="400px"|Status
!width="100px"|Model scope
|-
!width="420px"|Notes and References
|TOMAS parallelization
 
|Sal Farina (CSU)<br>Jeff Pierce (CSU)
 
|-valign="top"
|Capture all trop and PBL height changes in budget diagnostics
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Diagnostics
|
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 
|-valign="top"
|Dust non-sphericity impacts on optical properties
|Inderjeet Singh (WashU)
|Aerosols
|
 
|-valign="top"
|Fixes to stratospheric aerosol settling
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Aerosols
|
 
|-valign="top"
|DMS chemistry in v14
|Linia Tashmim (UCR)<br>Will Porter (UCR)
|Chemistry
|
 
|-valign="top"
|KPP standalone + 3D Interface
|Obin Sturm (USC)
|Chemistry
|
 
|-valign="top"
|Load balancing in chemistry solver (GCHP)
|Zhouran (Jordan) Sun (WashU)
|Chemistry +<br>Performance
|
 
|-valign="top"
|UCX chemistry in mesosphere (GCHP/GCClassic)
|Helena McDonald (MIT)
|Chemistry
|
 
|-valign="top"
|Updated aromatic oxidation
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
|
*Some of this has already been completed and implemented in [[GEOS-Chem v9-02]]
 
*Further testing/debugging is ongoing
|-valign="top"
|-
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Coupling to 3D ocean: OFFTRACK
|Laura Yang (Harvard)
|Yanxu Zhang (Harvard)
|Chemistry
|
|
|-
 
|Dry deposition updates for Hg simulation
|-valign="top"
|Bess Corbitt (Harvard)
|Implement isotope simulation for CH4 in the carbon simulation
|Lee Murray (Rochester)
|Chemistry
|
|
|-
*Will have to change negative emissions from soil to a first-order loss process
|New Hg soil emissions standard from offline GTMM
 
|Bess Corbitt (Harvard)
|-valign="top"
|Active mesospheric chemistry
|Helena McDonald (MIT)<br>Seb Eastham (ICL)
|Chemistry
|
|
|-
 
|Pre- and online processing of emissions
|-valign="top"
|Qiang Zhang (Tsinghua)<br>Christoph Keller (Harvard)
|Documentation for adding additional aerosol species
|Connor Barker (UCL)
|Documentation
|
|
|-
 
|Benchmark procedure for nested model
|-valign="top"
|[[Nested Model Working Group]]
|Column diagnostics
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
|Diagnostics
|
|


|-
|-valign="top"
|APM v2, synch with v9-02
|TOMAS rate diagnostics -- improve performance
|Fangqun Yu (SUNY Albany)
|Betty Croft (WashU/Dal)
|Diagnostics +<br>Performance
|
 
|-valign="top"
|Archive gamma values from heterogeneous chemistry
|Bob Yantosca (Harvard)
|Diagnostics
|
|
|-
 
|Retain native resolution 2D surface winds
|-valign="top"
|David Ridley (MIT)<br>[[GEOS-Chem Support Team]]
|RRTMG Documentation
|GCST
|Documentation
|
|
|-
 
|FLEXCHEM
|-valign="top"
|Mat Evans (York)<br>Mike Long (Harvard)
|Canopy Physics Model
|Sam Silva (MIT)
|Dry Deposition
|
|
*Currently need to add heterogeneous chemistry.
 
*Looking at Spring 2014 as possible delivery date
|-valign="top"
|-
|Dry deposition diagnostics by land cover
|Develop new coding standards
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|[[GEOS-Chem Support Team]]
|Dry Deposition
|
|
|-
 
|[[Grid-independent GEOS-Chem]]: Dry deposition
|-valign="top"
|[[GEOS-Chem Support Team]]<br>GMAO
|Dry deposition process diagnostics
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Dry Deposition
|
|
|-
 
|[[Grid-Independent GEOS-Chem: Emissions Component|HEMCO emissions component]]
|-valign="top"
|Christoph Keller (Harvard)<br>[[GEOS-Chem Support Team]]<br>GMAO
|Biomass burning for TOMAS
|Nicole June (CSU)
|Emissions +<br>Microphysics
|
|
*Nearing maturity (as of Nov 2013)
 
*Currently being implemented into the NASA GEOS5-GCM
|-valign="top"
|-
|Historic biomass burning (1750-2010)
|[[Grid-independent GEOS-Chem]]: NetCDF I/O
|Pengfei (Gtech)
|[[GEOS-Chem Support Team]]
|Emissions
|
|
|-
 
|CMS CO2 ocean fluxes
|-valign="top"
|Kevin Bowman (JPL)
|Rice methane emissions
|Zichong Cheng (Harvard)
|Emissions+<br>Carbon simulation
|
|
|-
 
|Dynamic subsurface ocean
|-valign="top"
|Helen Amos (Harvard)
|Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.)
|Katie Travis (NASA)<br>Kelvin Bates (CU Boulder)
|Emissions
|
|
|-
 
|Fix for CH4 concentrations after 2008
|-valign="top"
|Lee Murray (Harvard)
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
|Emissions
|
|
|-
 
|Sub-domain within the nested-grid domain
|-valign="top"
|Yuxuan Wang (Tsinghua)<br>Jintai Lin (Peking)
|New prior CO2 biospheric fluxes from CMS-FLUX and GMAO
|Kevin Bowman (JPL)<br>Lesley Ott (GMAO)
|Emissions
|
|
|-
*GMAO can provide high-resolution  fluxes (as high as 12 km)
|Offline satellite simulator tool
 
|[[Nested Model Working Group]]
|-valign="top"
|Snowpack Br2 emission
|Chris Holmes (FSU)
|Emissions
|
|
|-
 
|Metal catalyzed oxidation of SO2
|-valign="top"
|Becky Alexander (U. Washington)
|EDGAR v8.1_toxHg emissions for 1970-2022
|Eric Roy (MIT)
|Emissions
|
|
|-
 
|Sulfate production on aerosol haze
|-valign="top"
|Yuxuan Wang (Tsinghua)<br>Rokjin Park (Seoul Nat'l Univ.)
|Improve pressure handling in GCHP advection
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
|GCHP
|
|
|-
 
|Diurnal variation of NH3 emissions
|-valign="top"
|Daven Henze (UC Boulder)
|Add error trap for duplicate scale factors in HEMCO
|Bob Yantosca (Harvard)
|HEMCO
|
|
|-
 
|Time-varying Arctic parameterizations
|-valign="top"
|Jenny Fisher (Wollongong)
|Integration testing: Add stretched grid
|Lizzie Lundgren (Harvard)
|Quality Assurance
|
|
|-
 
|Future US emissions inventories of Hg
|-valign="top"
|Amanda Giang (MIT)
|Integration testing: Add GCAP2
|GCST
|Quality Assurance
|
|
|-
 
|Coastal inputs of Hg: Rivers and anthropogenic point sources
|-valign="top"
|Helen Amos (Harvard)
|Integration testing: Add GCHP mass flux run
|Lizzie Lundgren (Harvard)
|Quality Assurance
|
|
|-
 
|Complete revamp of [[Mercury#GTMM|GTMM]]
|-valign="top"
|Bess Corbitt (Harvard)
|Integration testing: Add run with all diagnostics turned on
|GCST
|Quality Assurance
|
|
|-
 
|Dust PDF for global simulations
|-valign="top"
|David Ridley (MIT)
|Integration testing: Reinstate TOMAS40
|Betty Croft (Dalhousie/WashU)
|Quality Assurance
|
|
|-
 
|Benchmark for aerosol deposition
|-valign="top"
|[[Aerosols overview: projects and developments|Aerosols Working Group]]
|Strat-adjusted RF in GCC and GCHP
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Radiation
|
 
|-valign="top"
|Continue cleanup of C-preprocessor switches
|Lizzie Lundgren (Harvard)
|Structural
|
|
|-
 
|[http://acmg.seas.harvard.edu/publications/murray.2013.jgr.pdf Interannual lightning]
|-valign="top"
|Lee Murray (Harvard)
|Updates to Luo deposition scheme
|Gan Luo (Albany)
|Wet Deposition
|
|
*Available for GEOS-4, but still needs to be implemented in GEOS-5
*New version, keep as switch (not default)
 
|-valign="top"
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
|Wet Deposition
|
 
|}
|}


--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
== Over the horizon (6-12 months) ==


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


{| border=1 cellspacing=0 cellpadding=5
{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
|- bgcolor="#cccccc"
!width="400px"|Item
!width="200px"|Feature
!width="300px"|Author(s)
!width="200px"|Contributor(s)
!width="400px"|Status
!width="100px"|Model scope
|-
!width="420px"|Notes and References
|Updates to redox chemistry for Hg simulation
 
|Bess Corbitt (Harvard)
|-valign="top"
|ML algorithms for bulk aerosol
|Arshad Nair (Albany)<br>Fangqun Yu (Albany)
|Aerosols
|
 
|-valign="top"
|Heterogeneous sulfate chemistry
|Katie Travis (NASA)
|Chemistry
|
 
|-valign="top"
|H2 as an active species
|Seb Eastham (ICL)
|Chemistry
|
 
|-valign="top"
|HCN, acetonitrile as fire tracers
|Kevin Bates (CU Boulder)
|Chemistry
|
 
|-valign="top"
|Implement ethane in carbon simulation
|Yuzhong Zhang (Westlake)
|Chemistry
|
 
|-valign="top"
|VCPs emissions
|Kelvin Bates (CU Boulder)
|Emissions
|
 
|-valign="top"
|Mesospheric source of CO
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
|Emissions
|
|
|-
 
|High-resolution regional emissions
|-valign="top"
|[[Nested Model Working Group]]
|Drought-stress algorithm
|Wei Li (Houston)
|Emissions
|
|
|-
 
|Flexible diagnostic package
|-valign="top"
|[[GEOS-Chem Support Team]]
|Physically-based resolution correction for BVOC emissions using MEGAN
|May Fu (SUSTech)
|Emissions
|
|
|-
 
|[[Grid-independent GEOS-Chem]]: Convection
|-valign="top"
|TBD
|Canadian forest fire prediction system (Canada government forecast model)
|[[GEOS-Chem Support Team|GCST]] needs help from community
|Robin Stevens (Montreal)
|-
|Emissions
|[[Grid-independent GEOS-Chem]]: Wet scavenging
|TBD
|[[GEOS-Chem Support Team|GCST]] needs help from community
|-
|[[Grid-independent GEOS-Chem]]: PBL mixing
|Sajeev Philip (Dalhousie)<br>Christoph Keller (Harvard)<br>GMAO
|
|
|-
 
|[[Grid-independent GEOS-Chem]]: Transport
|-valign="top"
|TBD
|Furan emission factors (updates existing emissions)
|[[GEOS-Chem Support Team|GCST]] needs help from community
|Lu Hu (Montana)<br>Lixu Jin (Montana)
|-
|Emissions
|3D VOC source for tagged CO simulation and enhanced tagging of secondary CO
|Jenny Fisher (Wollongong)
|
|
|-
 
|Satellite diagnostic for XCO2
|-valign="top"
|Andrew Schuh (CSU)
|Cooking emissions (not biofuel)
|Kelvin Bates (CU Boulder)
|Emissions
|
|
|-
 
|Dynamic precision
|-valign="top"
|[[GEOS-Chem Support Team]]
|State-specific annual emissions scaling factors (US) (1990-2021)
|Ishir Dutta (MIT)
|Emissions
|
|
|-
 
|Profiling GEOS-Chem
|-valign="top"
|TBD
|GISS-GC online
|Lee Murray (Rochester)
|External model
|
|
|-
 
|Methylmercury in the surface ocean
|-valign="top"
|Anne Soerensen (Harvard)
|Hybrid MPI-OpenMP in GCHP
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>Lizzie Lundgren (Harvard)
|GCHP
|
|
|-
 
|Primary marine emissions of OA
|-valign="top"
|Brett Gantt (NCSU)
|MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files
|Lizzie Lundgren (Harvard)
|GCHP
|
|
|-
 
|Recommendations for optimal timesteps
|-valign="top"
|Sajeev Philip (Dalhousie)
|MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files
|Lizzie Lundgren (Harvard)
|GCHP
|
|
|-
 
|DMS oxidation scheme updating (DMSO, oxidation by BrO)
|-valign="top"
|Tom Breider (Harvard)<br>Becky Alexander (U. Washington)
|MAPL3: Wildcards in GCHP History
|Lizzie Lundgren (Harvard)
|GCHP
|
|
|-
 
|More options for terrestrial CO2 fluxes
|-valign="top"
|Kevin Bowman (JPL)
|MAPL3: Output emissions with positive up convention in GCHP
|Lizzie Lundgren (Harvard)
|GCHP
|
|
|-
 
|Merge organics from specialized simulations into the mainline code
|-valign="top"
|Dylan Millet (U. Minnesota)
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Bob Yantosca (Harvard)
|Performance
|
|
|-valign="top"
|Photophysical oxidation of aldehydes
|Paulo Sebastianelli (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
|-valign="top"
|DMS updates
|Will Porter (UCR)
|Chemistry
|
|-valign="top"
|Furans emission and chemistry
|Lixu Jin (Montana)<br>Lu Hu (Montana)
|Chemistry + <br>Emissions
|
|-valign="top"
|Cl2 prodcution from Fe aerosol
|Qianjie Chen (HK Poly)<br>Becky Alexander (UW)
|Chemistry
|
|-valign="top"
|VCP, cooking: tracers species added i.e., D5, ethanol affecting PAN
|Kevin Bates (CU Boulder)
|Emissions
|
|-valign="top"
|bidirectional land-atmosphere exchange for Hg
|Yuying Cui (MIT/Tsinghua)
|Hg simulation
|
|-valign="top"
|OH covariances for inversions
|Elise Penn (Harvard)
|Inversions
|
|-valign="top"
|CESM2-GC offline
|Seb Eastham (ICL)<br>Lee Murray (Rochester)
|Met fields
|
|-valign="top"
|Re-binning of off-line sea salt and dust for TOMAS
|Betty Croft (Dalhousie)
|Microphysics
|
|-valign="top"
|TOMAS nucleation updates
|Sam O'Donnell (CSU)
|Microphysics
|
|-valign="top"
|Stratospheric aerosol APM
|Fangqun Yu (SUNY Albany)
|Microphysics
|
|-valign="top"
|Transition from MERRA-2 to GEOS-IT for benchmarking
|Yuanjian Zhang (WashU)
|Quality Assurance
|
|-valign="top"
|Automate integration testing on AWS
|Yidan Tang (WashU)
|Quality Assurance
|
|-valign="top"
|Integration testing: Add across end of year run
|GCST
|Quality Assurance
|
|-valign="top"
|Integration testing: Add GEOS-IT
|Yuanjian Zhang (WashU)
|Quality Assurance
|
|-valign="top"
|Separate mixing, emissions, and drydep
|Yuanjian Zhang (WashU)
|Structural
|
|-valign="top"
|Intel IFX compiler
|Bob Yantosca (Harvard)
|Structural
|
|-valign="top"
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
|Structural
|
|-valign="top"
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
|Lizzie Lundgren (Harvard)
|Structural
|
|-valign="top"
|Limit allocation of State_Met to what is needed per simulation
|Melissa Sulprizio (Harvard)
|Structural
|
|}
|}


--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
== Longer term (12-24 months)==


=== Over the horizon (6-12 months) ===
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.


{| border=1 cellspacing=0 cellpadding=5
{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
|- bgcolor="#cccccc"
!width="400px"|Item
!width="200px"|Feature
!width="300px"|Author(s)
!width="200px"|Contributor(s)
!width="400px"|Status
!width="100px"|Model scope
|-
!width="420px"|Notes and References
|Coupling to 3D ocean: MIT ocean GCM
 
|Yanxu Zhang (Harvard)
|-valign="top"
|Modal aerosol model (MAM7) in GCHP
|Shreya Sharma (MIT)
|Aerosols
|
|
|-
 
|[[Python code for GEOS-Chem|Python interface]]
|-valign="top"
|Beno&icirc;t Bovy (U. Li&egrave;ge-Belgium) + others
|Online OCIM ocean biogeochemistry
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
|Chemistry
|
|
|-
 
|Uniformity of units
|-valign="top"
|[[GEOS-Chem Support Team]]
|Perchlorate chemistry
|Yuk Chun Chan (UW)
|Chemistry
|
|
|-
 
|Historical inventory of Hg in products and processes
|-valign="top"
|Hannah Horowitz (Harvard)
|Non-stomatal dry deposition (2-layer canopy model)
|Michael Vermeuel (Purdue)
|Dry Deposition
|
|
|-
 
|Better link/coupling to ocean processes
|-valign="top"
|[[Chemistry-Climate Working Group]]
|Continental chloride particle emissions (salty dust, road salt)
|Jessica Haskins (Utah)
|Emissions
|
|
|-
 
|Better coupling to biogeochemical cycles
|-valign="top"
|[[Chemistry-Climate Working Group]]
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
|Ruochong (Tshingua)
|Emissions
|
|
|-
 
|Chemistry feedbacks to vegetation ecosystem
|-valign="top"
|Amos Tai (MIT)
|Lightning NOx production rates
|Bex Horner (UCL)
|Emissions
|
|
|-
 
|-valign="top"
|HFO and CF3CHO
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
 
|-valign="top"
|Glyoxal updates from isoprene
|Tzung-May Fu (SUSTech)
|Chemistry
|
 
|-valign="top"
|Iodine chemistry
|Iodine chemistry
|Tom&aacute;s Sherwen (York)
|Becky Alexander (UW)<br>Xuan Wang (CUHK)
|Chemistry
|
 
|-valign="top"
|Chlorine/Perchlorate
|Yukchun Chan (UW)
|Chemistry
|
|
|-
 
|Harmonization of aerosol optics (including water uptake)
|-valign="top"
|David Ridley(MIT)<br>Colette Heald (MIT)<br>Peter Adams (Carnegie Mellon)<br>Fangqun Yu (SUNY Albany)<br>Gabriele Curci (U. L'Aquila)<br>Randall Martin (Dalhousie)
|Playa dust chemistry to improve Cl over land
|Jessica Haskins (Utah)
|Chemistry
|
|
|-
 
|[[Grid-independent GEOS-Chem]]: Ocean interface
|-valign="top"
|Yanxu Zhang (Harvard)
|GFED5 biomass burning
|Eric Roy (MIT)
|Emissions
|
|
|-
 
|Updated LAI
|-valign="top"
|Kevin Bowman (JPL)<br>Folkert Boersma (KNMI)
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|Merge dicarbonyl simulation into standard simulation
|-valign="top"
|Tzung-May Fu (Peking)
|Soil Hg emissions 2010-2020
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|Global 0.5x0.667 capability for CO2/CH4
|-valign="top"
|Liang Feng (Edinburgh)<br>Dylan Jones (U. Toronto)
|Air-sea exchange parameterization
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|Dynamic multiple boxes subsurface Arctic Ocean
|-valign="top"
|Helen Amos (Harvard)<br>Anne Soerensen (Harvard)
|Soil Hg emissions parameterization
|Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|[[POPs simulation#PCB simulation|PCB simulation: atmosphere and ocean]]
|-valign="top"
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
|Sea salt uptake of GOM
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|Nighttime isoprene chemistry
|-valign="top"
|Rebecca Schwantes (Caltech)
|Photoreduction rate constant
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|ClNO2
|-valign="top"
|Mat Evans (York)
|new observations (2010-2020) in standardized Hg benchmark for intercomparison
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|Dissolved Fe/Cu
|-valign="top"
|Matthew Johnson (NCSU)<br>Jingqiu Mao (NOAA/GFDL)
|Hg simulation in GCHP
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|UV absorption of organics/brown carbon
|-valign="top"
|Rokjin Park (Seoul Nat'l Univ.)
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
|Hannah Horowitz (UIUC)
|Hg simulation
|
|
|-
 
|CO-CO2-CH4 simulation
|-valign="top"
|Dylan Jones (U. Toronto)<br>Annemarie Fraser (Edinburgh)
|possibly updating Hg oxidation chemistry based on Utah field campaigns
|Jessica Haskins (Utah)
|Hg simulation
|
|
|-
 
|Updated HCN simulation
|-valign="top"
|Dylan Jones (U. Toronto)
|New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online
|Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC)
|Input data
|
|
|-
 
|[[Adding_Passive_Tracers|Passive tracer module]]
|-valign="top"
|Jenny Fisher (Wollongong)
|Extend IMI to CO2 (ICI)
|Hannah Nesser (JPL)
|Inversions
|
 
|-valign="top"
|Global emission inventory of metals
|Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U)
|Metals simulation
|
|
'''''[mailto:jennyf@uow.edu.au Jenny Fisher] wrote:'''''
 
:Passive tracers will not (at this stage) be added as a standard feature of GEOS-Chem, but can be implemented by individual users relatively straightforwardly.  We have added this to the SEAC4RS research version of GEOS-Chem.
|-valign="top"
|-
|Investigate and improve performance of aerosol chemistry
|Plume in-grid lightning NOx emissions
|Bob Yantosca (Harvard)
|Alicia Gressent (U. Toulouse)
|Performance
|
 
|-valign="top"
|PAH - update from version 11
|Lexia Cicone (MIT)
|POPs simulation
|
 
|-valign="top"
|Species database more accessible; doc updates; TOL discussion
|Jessica Haskins (Utah)
|Structural
|
|
|}


--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
|-valign="top"
|Stretched-grid plotting in GCPy
|Killian Murphy (York)
|Tools
|


=== Longer term (12-24 months)===
|-valign="top"
|Model inter-comparison of transport (GEOS, GCHP, GCClassic)
|Lizzie Lundgren (Harvard), Emma Knowland (NASA)
|Transport
|


TBD
|-valign="top"
|Comparing mass fluxes in GCHP vs. traditional lat/lon wind
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
|Transport
|


--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
|}

Revision as of 15:59, 28 June 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 14.5.0

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
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry Simple
New soil NOx parameterization Yi Wang (Iowa)
Jun Wang (Iowa) 		Emissions Medium
Fix pressure handling in HEMCO standalone Melissa Sulprizio (Harvard) HEMCO Simple
Fix obspack - not working in 14.4.0 Bob Yantosca (Harvard) Diagnostics Medium
Horizontal flux regridding fix in MAPL Tom Clune (GMAO) GCHP Medium
Cloud-J 7.7.2 for greater flexibility in external models Lizzie Lundgren (Harvard) Photolysis Medium
GCHP run directory improvements for mass flux, stretched grid, and GEOS-IT runs Lizzie Lundgren (Harvard) GCHP Medium
Fixes for GEOS-Chem 14.4 in CESM Haipeng Lin (Harvard)
Lizzie Lundgren (Harvard) 		CESM 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
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple Delivered June 2024
Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4 Lizzie Lundgren (Harvard) GC-Classic 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 Refereneces


Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol Camilo Serrano (McGill)
Andreas Zuend (McGill) 		Aerosols Not delivered
Extend aerosol settling Eloise Marais (UCL) Aerosols Not delivered
Comment back in Ca, Mg, and K cations in aerosol thermo (HETP) Becky Alexander (UW) Aerosols Not delivered
Seasalt aerosol from sea ice leads (2002-2011) Hannah Horrowitz (UIUC) Aerosols Not delivered
  • Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
P/L species should not contribute to the error norm Obin Sturm (USC) Chemistry Not delivered
Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6 Katie Travis (NASA LARC) Chemistry Not delivered
Monoterpene oxidation more species & oxidation products Kevin Bates (CU Boulder) Chemistry Not delivered
PPN photolysis Eloise Marais (UCL) Chemistry Not delivered
Global organic N dep from various emissions; nitrate aromatics updates May Fu (SUSTech) Chemistry +
Deposition 		Not delivered
ALK4 from biogenic vs anthro Jared Brewer (UMN) Chemistry Not delivered
Dry deposition to F90 to improve readability Chris Holmes (FSU) Dry Deposition Not delivered
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam (CUHK)
Amos Tai (CUHK) 		Dry deposition Delivered
Feb 2021
FRP-based fire emissions for eastern US at 0.2 (2019-2020) Chris Holmes (FSU) Emissions Not delivered
China agriculture NH3 emissions Amos Tai (CUHK) Emissions Not delivered
T-dependent anthropogenic VOCs May Fu (SUSTech) Emissions Not delivered
  • Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.
New source functions for transport tracers beryllium-7 and beryllium-10 Minjie Zheng (ETH) Emissions Delivered
June 2024
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor U)
Loretta Mickley (Harvard) 		Emissions Delivered
  • Data involves many files- need to think about temporal frequency
Australian emissions Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Emissions Not delivered
Hg geogenic emissions (volcanic, rock weathering) Eric Roy (MIT) Emissions Not delivered
Hg biomass burning - FINN2.5 & GFED4 Eric Roy (MIT) Emissions Not delivered
BCC-GC online Lin Zhang (PKU) External Model Not delivered
GC-YIBS with online fire emissions Xu Yue (NUIST)
Hong Liao (NUIST) 		External Model Not delivered
GISS-GC offline (GCAP) Lee Murray (Rochester) GCAP Not delivered
Archived TCR-2 OH fields for carbon simulations Kazu Miyazaki (JPL) Input data Not delivered
  • This will be the default OH, but users will have the option of selecting other OH fields

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


Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics
Dust non-sphericity impacts on optical properties Inderjeet Singh (WashU) Aerosols
Fixes to stratospheric aerosol settling Connor Barker (UCL)
Eloise Marais (UCL) 		Aerosols
DMS chemistry in v14 Linia Tashmim (UCR)
Will Porter (UCR) 		Chemistry
KPP standalone + 3D Interface Obin Sturm (USC) Chemistry
Load balancing in chemistry solver (GCHP) Zhouran (Jordan) Sun (WashU) Chemistry +
Performance
UCX chemistry in mesosphere (GCHP/GCClassic) Helena McDonald (MIT) Chemistry
Updated aromatic oxidation Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
MCO3 uptake by cloud forming MP; leading to lower PAN Laura Yang (Harvard) Chemistry
Implement isotope simulation for CH4 in the carbon simulation Lee Murray (Rochester) Chemistry
  • Will have to change negative emissions from soil to a first-order loss process
Active mesospheric chemistry Helena McDonald (MIT)
Seb Eastham (ICL) 		Chemistry
Documentation for adding additional aerosol species Connor Barker (UCL) Documentation
Column diagnostics Lizzie Lundgren (Harvard)
Viral Shah (GMAO) 		Diagnostics
TOMAS rate diagnostics -- improve performance Betty Croft (WashU/Dal) Diagnostics +
Performance
Archive gamma values from heterogeneous chemistry Bob Yantosca (Harvard) Diagnostics
RRTMG Documentation GCST Documentation
Canopy Physics Model Sam Silva (MIT) Dry Deposition
Dry deposition diagnostics by land cover Holly Nowell (FSU)
Chris Holmes (FSU) 		Dry Deposition
Dry deposition process diagnostics Holly Nowell (FSU)
Chris Holmes (FSU) 		Dry Deposition
Biomass burning for TOMAS Nicole June (CSU) Emissions +
Microphysics
Historic biomass burning (1750-2010) Pengfei (Gtech) Emissions
Rice methane emissions Zichong Cheng (Harvard) Emissions+
Carbon simulation
Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.) Katie Travis (NASA)
Kelvin Bates (CU Boulder) 		Emissions
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Tia Scarpelli (Carbon Mapper)
Melissa Sulprizio (Harvard) 		Emissions
New prior CO2 biospheric fluxes from CMS-FLUX and GMAO Kevin Bowman (JPL)
Lesley Ott (GMAO) 		Emissions
  • GMAO can provide high-resolution fluxes (as high as 12 km)
Snowpack Br2 emission Chris Holmes (FSU) Emissions
EDGAR v8.1_toxHg emissions for 1970-2022 Eric Roy (MIT) Emissions
Improve pressure handling in GCHP advection Yuanjian Zhang (WashU)
Seb Eastham (ICL) 		GCHP
Add error trap for duplicate scale factors in HEMCO Bob Yantosca (Harvard) HEMCO
Integration testing: Add stretched grid Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Add GCAP2 GCST Quality Assurance
Integration testing: Add GCHP mass flux run Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Add run with all diagnostics turned on GCST Quality Assurance
Integration testing: Reinstate TOMAS40 Betty Croft (Dalhousie/WashU) Quality Assurance
Strat-adjusted RF in GCC and GCHP Connor Barker (UCL)
Eloise Marais (UCL) 		Radiation
Continue cleanup of C-preprocessor switches Lizzie Lundgren (Harvard) Structural
Updates to Luo deposition scheme Gan Luo (Albany) Wet Deposition
  • New version, keep as switch (not default)
Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer Gan Luo (Albany)
Fangqun Yu (Albany) 		Wet Deposition

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
ML algorithms for bulk aerosol Arshad Nair (Albany)
Fangqun Yu (Albany) 		Aerosols
Heterogeneous sulfate chemistry Katie Travis (NASA) Chemistry
H2 as an active species Seb Eastham (ICL) Chemistry
HCN, acetonitrile as fire tracers Kevin Bates (CU Boulder) Chemistry
Implement ethane in carbon simulation Yuzhong Zhang (Westlake) Chemistry
VCPs emissions Kelvin Bates (CU Boulder) Emissions
Mesospheric source of CO Dylan Jones (UofT)
Pam Wales (NASA GSFC) 		Emissions
Drought-stress algorithm Wei Li (Houston) Emissions
Physically-based resolution correction for BVOC emissions using MEGAN May Fu (SUSTech) Emissions
Canadian forest fire prediction system (Canada government forecast model) Robin Stevens (Montreal) Emissions
Furan emission factors (updates existing emissions) Lu Hu (Montana)
Lixu Jin (Montana) 		Emissions
Cooking emissions (not biofuel) Kelvin Bates (CU Boulder) Emissions
State-specific annual emissions scaling factors (US) (1990-2021) Ishir Dutta (MIT) Emissions
GISS-GC online Lee Murray (Rochester) External model
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York)
Lizzie Lundgren (Harvard) 		GCHP
MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files Lizzie Lundgren (Harvard) GCHP
MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files Lizzie Lundgren (Harvard) GCHP
MAPL3: Wildcards in GCHP History Lizzie Lundgren (Harvard) GCHP
MAPL3: Output emissions with positive up convention in GCHP Lizzie Lundgren (Harvard) GCHP
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Performance
Photophysical oxidation of aldehydes Paulo Sebastianelli (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
DMS updates Will Porter (UCR) Chemistry
Furans emission and chemistry Lixu Jin (Montana)
Lu Hu (Montana) 		Chemistry +
Emissions
Cl2 prodcution from Fe aerosol Qianjie Chen (HK Poly)
Becky Alexander (UW) 		Chemistry
VCP, cooking: tracers species added i.e., D5, ethanol affecting PAN Kevin Bates (CU Boulder) Emissions
bidirectional land-atmosphere exchange for Hg Yuying Cui (MIT/Tsinghua) Hg simulation
OH covariances for inversions Elise Penn (Harvard) Inversions
CESM2-GC offline Seb Eastham (ICL)
Lee Murray (Rochester) 		Met fields
Re-binning of off-line sea salt and dust for TOMAS Betty Croft (Dalhousie) Microphysics
TOMAS nucleation updates Sam O'Donnell (CSU) Microphysics
Stratospheric aerosol APM Fangqun Yu (SUNY Albany) Microphysics
Transition from MERRA-2 to GEOS-IT for benchmarking Yuanjian Zhang (WashU) Quality Assurance
Automate integration testing on AWS Yidan Tang (WashU) Quality Assurance
Integration testing: Add across end of year run GCST Quality Assurance
Integration testing: Add GEOS-IT Yuanjian Zhang (WashU) Quality Assurance
Separate mixing, emissions, and drydep Yuanjian Zhang (WashU) Structural
Intel IFX compiler Bob Yantosca (Harvard) Structural
CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code Bob Yantosca (Harvard)
Lee Murray (Rochester) 		Structural
Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO Lizzie Lundgren (Harvard) Structural
Limit allocation of State_Met to what is needed per simulation Melissa Sulprizio (Harvard) Structural

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
Modal aerosol model (MAM7) in GCHP Shreya Sharma (MIT) Aerosols
Online OCIM ocean biogeochemistry Lee Murray (Rochester)
Hannah Horowitz (UIUC)
Chris Holmes (FSU) 		Chemistry
Perchlorate chemistry Yuk Chun Chan (UW) Chemistry
Non-stomatal dry deposition (2-layer canopy model) Michael Vermeuel (Purdue) Dry Deposition
Continental chloride particle emissions (salty dust, road salt) Jessica Haskins (Utah) Emissions
Multivolatility emission inventory to address gaps in EDGAR/HTAP etc. Ruochong (Tshingua) Emissions
Lightning NOx production rates Bex Horner (UCL) Emissions
HFO and CF3CHO Beth Killen (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
Glyoxal updates from isoprene Tzung-May Fu (SUSTech) Chemistry
Iodine chemistry Becky Alexander (UW)
Xuan Wang (CUHK) 		Chemistry
Chlorine/Perchlorate Yukchun Chan (UW) Chemistry
Playa dust chemistry to improve Cl over land Jessica Haskins (Utah) Chemistry
GFED5 biomass burning Eric Roy (MIT) Emissions
Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble Eric Roy (MIT)
Ari Feinberg (IQF-CSIC) 		Hg simulation
Soil Hg emissions 2010-2020 Eric Roy (MIT)
Ari Feinberg (IQF-CSIC) 		Hg simulation
Air-sea exchange parameterization Eric Roy (MIT) Hg simulation
Soil Hg emissions parameterization Ari Feinberg (IQF-CSIC) Hg simulation
Sea salt uptake of GOM Eric Roy (MIT) Hg simulation
Photoreduction rate constant Eric Roy (MIT) Hg simulation
new observations (2010-2020) in standardized Hg benchmark for intercomparison Eric Roy (MIT)/Ari Feinberg (IQF-CSIC) Hg simulation
Hg simulation in GCHP Eric Roy (MIT) Hg simulation
OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB) Hannah Horowitz (UIUC) Hg simulation
possibly updating Hg oxidation chemistry based on Utah field campaigns Jessica Haskins (Utah) Hg simulation
New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC) Input data
Extend IMI to CO2 (ICI) Hannah Nesser (JPL) Inversions
Global emission inventory of metals Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U) Metals simulation
Investigate and improve performance of aerosol chemistry Bob Yantosca (Harvard) Performance
PAH - update from version 11 Lexia Cicone (MIT) POPs simulation
Species database more accessible; doc updates; TOL discussion Jessica Haskins (Utah) Structural
Stretched-grid plotting in GCPy Killian Murphy (York) Tools
Model inter-comparison of transport (GEOS, GCHP, GCClassic) Lizzie Lundgren (Harvard), Emma Knowland (NASA) Transport
Comparing mass fluxes in GCHP vs. traditional lat/lon wind Yuanjian Zhang (WashU), Seb Eastham (ICL) Transport
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