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 March 2015 ==
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)
|[[TOMAS_aerosol_microphysics#Updates_for_GEOS-Chem_v9-02_public_release|TOMAS parallelization]]
!width="100px"|Model scope
|Sal Farina (CSU)<br>Jeff Pierce (CSU)<br>[[GEOS-Chem Support Team]]
!width="100px"|Ease of implementation
!width="300px"|Notes and References
 
|-valign="top"
|ALK4 & R4N2 chemistry
|Jared Brewer (UMN)
|Chemistry
|Simple
|
*[https://github.com/geoschem/geos-chem/pull/2352 geos-chem PR #1625]
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Yi Wang (Iowa)<br>Jun Wang (Iowa)
|Emissions
|Medium
|
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
*Incorporates new met field TSOIL1
 
|-valign="top"
|Fix pressure handling in HEMCO standalone
|Melissa Sulprizio (Harvard)
|HEMCO
|Simple
|
*[https://github.com/geoschem/HEMCO/issues/277 HEMCO issue #277]
 
|-valign="top"
|Fix obspack - not working in 14.4.0
|Bob Yantosca (Harvard)
|Diagnostics
|Medium
|
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]
|-valign="top"
|Horizontal flux regridding fix in MAPL
|Tom Clune (GMAO)
|GCHP
|Medium
|
*[https://github.com/geoschem/MAPL/pull/36 MAPL PR #36]
 
|-valign="top"
|Cloud-J 7.7.2 for greater flexibility in external models
|Lizzie Lundgren (Harvard)
|Photolysis
|Medium
|
*[https://github.com/geoschem/Cloud-J/pull/17 Cloud-J PR #17]
*[https://github.com/geoschem/geos-chem/pull/2342 geos-chem PR #2342]
*[https://github.com/geoschem/geos-chem/pull/2353 geos-chem PR #2553]
*[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
|
*[https://github.com/geoschem/geos-chem/pull/2326 geos-chem PR #2326]
 
|-valign="top"
|Fixes for GEOS-Chem 14.4 in CESM
|Haipeng Lin (Harvard)<br>Lizzie Lundgren (Harvard)
|CESM
|Medium
|
*[https://github.com/geoschem/geos-chem/pull/2348 geos-chem PR #2348]
*[https://github.com/geoschem/geos-chem/pull/2349 geos-chem PR #2349]
* More PRs in progress
 
|}
 
== 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
|
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
 
|-valign="top"
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
|Lizzie Lundgren (Harvard)
|GC-Classic
|Medium
|
|
*Implemented in the [[GEOS-Chem v9-02]] public release (03 Mar 2014)
|-
|[[UCX chemistry mechanism|UCX strat chem mechanism]], includes:
*[[UCX chemistry mechanism|Stratospheric chemistry]]
*[[UCX chemistry mechanism|Stratospheric aerosols]]
*[[FAST-JX v7.0 photolysis mechanism]]
|UCX: Sebastian Eastham (MIT)<br>Fast-JX: Sebastian Eastham (MIT) and Jingqiu Mao (Princeton)
|
|
*Implemented into GEOS-Chem v10-01c
*[https://github.com/geoschem/HEMCO/issues/18 HEMCO issue #18]
**[[GEOS-Chem v10-01 benchmark history#v10-01c|1-month benchmarks]] approved on 29 May 2014
 
**[[GEOS-Chem_v10-01_benchmark_history#v10-01c-Run1|1-year benchmarks]] approved on 26 Jun 2014
|}
|-
 
|[[HEMCO|HEMCO emissions component]]
== Ready to go in ==
|Christoph Keller (Harvard)<br>[[GEOS-Chem Support Team]]<br>GMAO
 
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
|
|
*Implemented into GEOS-Chem v10-01e
 
**[[GEOS-Chem v10-01 benchmark history#v10-01e|1-month benchmark]] approved on 07 Nov 2014
|-valign="top"
**[[GEOS-Chem_v10-01_benchmark_history#v10-01e-Run0|1-year benchmark]] approved on 01 Dec 2014
|Extend aerosol settling
|-
|Eloise Marais (UCL)
|[[Two-way coupling between global and nested GEOS-Chem models]]
|Aerosols
|Jintai Lin (Peking U.)<br>Yingying Yan (Peking U.)
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jul 2014)
 
*Implemented into GEOS-Chem v10-01f
|-valign="top"
**[[GEOS-Chem v10-01 benchmark history#v10-01f|1-month benchmark]] approved on 13 Jan 2015
|Comment back in Ca, Mg, and K cations in aerosol thermo (HETP)
|-
|Becky Alexander (UW)
|[[EPA/NEI08 North American emissions|NEI 2008 emissions with hourly resolution]]
|Aerosols
|Katie Travis (Harvard)
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Summer 2013)
 
*Slated for inclusion into [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
|-valign="top"
|-
|Seasalt aerosol from sea ice leads (2002-2011)
|[[MEGAN_biogenic_emissions#Update_to_MEGAN2.1_.28Guenther_et_al..2C_2012.29|Update to MEGAN2.1]]
|Hannah Horrowitz (UIUC)
|Dylan Millet (U. Minnesota)
|Aerosols
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Summer 2013)
*Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
*Included in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
 
|-
|-valign="top"
|[[EDGAR anthropogenic emissions|Update to EDGAR 4.2 anthropogenic emissions]]
|P/L species should not contribute to the error norm
|Meng Li and Qiang Zhang (Tsinghua)<br>Sajeev Philip (Dalhousie)
|Obin Sturm (USC)
|Chemistry
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Apr 2014)
 
*Included in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
|-valign="top"
|-
|Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6
|[[MASAGE NH3 inventory]]
|Katie Travis (NASA LARC)
|Fabien Paulot (NOAA, formerly Harvard)
|Chemistry
|Not delivered
|
|
*Delivered to GCST (Jan 2015)
 
*Included in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
|-valign="top"
|-
|Monoterpene oxidation more species & oxidation products
|[[FINN biomass burning emissions]]
|Kevin Bates (CU Boulder)
|Jenny Fisher (Wollongong)<br>Min Huang (JPL)
|Chemistry
|Not delivered
|
|
*Included in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
 
|-
|-valign="top"
|[http://edgar.jrc.ec.europa.eu/htap_v2/index.php?SECURE=123 HTAP global emissions] and [http://mix.greenresource.cn/ MIX hi-res Asian emissions]
|PPN photolysis
|Qiang Zhang (Tsinghua U.)
|Eloise Marais (UCL)
|Chemistry
|Not delivered
|
|
*Emission files are ready. 
 
*Included in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
|-valign="top"
|-
|Global organic N dep from various emissions; nitrate aromatics updates
|Improve temporal resolution of anthropogenic CO2 sources
|May Fu (SUSTech)
|Ray Nassar (Environment Canada)
|Chemistry +<br>Deposition
|Not delivered
|
|
*This update will be added via [[HEMCO]]. It can be lumped w/ other emissions updates (order TBD).
 
|-
|-valign="top"
|UNEP 2010 anthropogenic Hg emissions
|ALK4 from biogenic vs anthro
|Shaojie Song (MIT)
|Jared Brewer (UMN)
|Chemistry
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2014)
 
*Slated for inclusion to [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]]
|-valign="top"
|-
|Dry deposition to F90 to improve readability
|[[Ship_emissions#Updates_to_ship_NOx_chemistry|Updates to ship NOx chemistry]]
|Chris Holmes (FSU)
|Chris Holmes (UC Irvine)<br>Geert Vinken (Eindhoven)
|Dry Deposition
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jun 2014)
*Included in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
|-
|Replace CASA CO2 biosphere climatology with year-specific fluxes
|Ray Nassar (Environment Canada)<br>Dylan Jones (U. Toronto)
|'''''Ray Nassar wrote:'''''
: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.
*Slated for inclusion in [[GEOS-Chem v10-01 benchmark history#v10-01i|GEOS-Chem v10-01i]]


|-
|-valign="top"
|[[Coupling GEOS-Chem with RRTMG|Online Radiative Transfer in GEOS-Chem]]
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|David Ridley (MIT)<br>Colette Heald (MIT)
|Joey Lam  (CUHK)<br>Amos Tai (CUHK)
|Dry deposition
|Delivered<br>Feb 2021
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Oct 2013)
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
*Slated for inclusion in [[GEOS-Chem v10-01 benchmark history#v10-01i|GEOS-Chem v10-01i]]
 
|-
|-valign="top"
|NEI 2008 Hg emission inventory
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
|Yanxu Zhang (Harvard)
|Chris Holmes (FSU)
|Emissions
|Not delivered
|
|
*This update will be added via [[HEMCO]]. It can be lumped w/ other emissions updates (order TBD).
 
*Postponed until after the GEOS-Chem v10-01 release.
|-valign="top"
|-
|China agriculture NH3 emissions
|Historical anthropogenic atmospheric emissions of Hg
|Amos Tai (CUHK)
|Bess Corbitt (Harvard)
|Emissions
|Not delivered
|
|
*Postponed until after the GEOS-Chem v10-01 release.
 
|-
|-valign="top"
|[[PAN|PAN / Organics]]
|T-dependent anthropogenic VOCs
|Emily Fischer (CSU)
|May Fu (SUSTech)
|Emissions
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (May 2013)
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.
|-
 
|Subsurface ocean Hg concentration update
|-valign="top"
|Anne Soerensen (Harvard)
|New source functions for transport tracers beryllium-7 and beryllium-10
|*Postponed until after the GEOS-Chem v10-01 release.
|Minjie Zheng (ETH)
|-
|Emissions
|[[MEGAN_biogenic_emissions#CO2_direct_effect_on_isoprene_emissions|CO2 direct effect on isoprene emissions]]
|Not delivered
|Amos Tai (City University of Hong Kong)
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
*https://zenodo.org/records/8372652
*Postponed until after the GEOS-Chem v10-01 release.
 
|-
|-valign="top"
|Arctic Hg cycling
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Jenny Fisher (Wollongong)
|Yang Li (Baylor U)<br>Loretta Mickley (Harvard)
|Emissions
|Delivered
|
|
*Code is ready
*Data involves many files- need to think about temporal frequency
*Postponed until after the GEOS-Chem v10-01 release.
 
|-
|-valign="top"
|Criegee intermediate
|Australian emissions
|Dylan Millet (U. Minnesota)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Emissions
|Not delivered
|
|
*This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
 
*Postponed until after the GEOS-Chem v10-01 release.
|-valign="top"
|-
|Hg geogenic emissions (volcanic, rock weathering)
|[[Wet_deposition#Impaction_scavenging_for_hydrophobic_BC_and_homogeneous_IN_removal|Impaction scavenging for hydrophobic BC]]
|Eric Roy (MIT)
|Qiaoqiao Wang (Harvard)
|Emissions
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
 
*Postponed until after the GEOS-Chem v10-01 release.
|-valign="top"
|-
|Hg biomass burning - FINN2.5 & GFED4
|[[Wet_deposition#Impaction_scavenging_for_hydrophobic_BC_and_homogeneous_IN_removal|Homogeneous IN removal]]
|Eric Roy (MIT)
|Qiaoqiao Wang (Harvard)
|Emissions
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
 
*Postponed until after the GEOS-Chem v10-01 release.
|-valign="top"
|-
|BCC-GC online
|[[Mineral_dust_aerosols#Surface_chemistry_on_dust|Acid uptake on dust aerosols]]
|Lin Zhang (PKU)
|T. Duncan Fairlie (NASA/LARC)
|External Model
|Not delivered
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]], on hold until post v9-02
 
*Postponed until after the GEOS-Chem v10-01 release.
|-valign="top"
|-
|GC-YIBS with online fire emissions
|RRTMG radiative transfer code in [[APM aerosol microphysics]]
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
|Fangqun Yu (SUNY Albany)
|External Model
|*Postponed until after the GEOS-Chem v10-01 release.
|Not delivered
|-
|[[POPs simulation#PAH simulation|Updates to PAH code]]
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
|
|
*Awaiting delivery of code
 
|-
|-valign="top"
|VBS SOA option
|GISS-GC offline (GCAP)
|Rokjin Park (Seoul Nat'l Univ.)
|Lee Murray (Rochester)
|*Postponed until after the GEOS-Chem v10-01 release.
|GCAP
|-
|Not delivered
|Tagged sulfate and nitrate simulation
|Becky Alexander (U. Washington)
|*Postponed until after the GEOS-Chem v10-01 release.
|-
|[[Mineral_dust_aerosols#Improved_dust_size_distribution_scheme|Improved dust size distribution scheme]]
|Li Zhang (Colorado U.)<br>Daven Henze (Colorado U.)
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2014)
*Postponed until after the GEOS-Chem v10-01 release.


|- bgcolor="#ccffff"
|-valign="top"
!width="400px"|Structural/programming updates for high-performance computing
|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
|
|
*This will be an ongoing process that will occur simultaneously as the above science updates are brought into GEOS-Chem.
*This will be the default OH, but users will have the option of selecting other OH fields
 
|}
|}


--[[User:Bmy|Bob Y.]] 11:37, 5 March 2015 (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
|Coupling to 3D ocean: OFFTRACK
 
|Yanxu Zhang (Harvard)
 
|-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
|
|
|-
 
|Dry deposition updates for Hg simulation
|-valign="top"
|Bess Corbitt (Harvard)
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Laura Yang (Harvard)
|Chemistry
|
|
|-
 
|New Hg soil emissions standard from offline GTMM
|-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
|Pre- and online processing of emissions
 
|Qiang Zhang (Tsinghua)<br>Christoph Keller (Harvard)
|-valign="top"
|Active mesospheric chemistry
|Helena McDonald (MIT)<br>Seb Eastham (ICL)
|Chemistry
|
|
|-
 
|Benchmark procedure for nested model
|-valign="top"
|[[Nested Model Working Group]]
|Documentation for adding additional aerosol species
|Connor Barker (UCL)
|Documentation
|
|


|-
|-valign="top"
|APM v2, synch with v9-02
|Column diagnostics
|Fangqun Yu (SUNY Albany)
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
|Diagnostics
|
 
|-valign="top"
|TOMAS rate diagnostics -- improve performance
|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]]: NetCDF I/O
|-valign="top"
|[[GEOS-Chem Support Team]]
|Biomass burning for TOMAS
|Nicole June (CSU)
|Emissions +<br>Microphysics
|
|
|-
 
|CMS CO2 ocean fluxes
|-valign="top"
|Kevin Bowman (JPL)
|Historic biomass burning (1750-2010)
|Pengfei (Gtech)
|Emissions
|
|
|-
 
|Dynamic subsurface ocean
|-valign="top"
|Helen Amos (Harvard)
|Rice methane emissions
|Zichong Cheng (Harvard)
|Emissions+<br>Carbon simulation
|
|
|-
 
|Fix for CH4 concentrations after 2008
|-valign="top"
|Lee Murray (Harvard)
|Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.)
|Katie Travis (NASA)<br>Kelvin Bates (CU Boulder)
|Emissions
|
|
|-
 
|Sub-domain within the nested-grid domain
|-valign="top"
|Yuxuan Wang (Tsinghua)<br>Jintai Lin (Peking)
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
|Emissions
|
|
|-
 
|Offline satellite simulator tool
|-valign="top"
|[[Nested Model Working Group]]
|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)
|Metal catalyzed oxidation of SO2
 
|Becky Alexander (U. Washington)
|-valign="top"
|Snowpack Br2 emission
|Chris Holmes (FSU)
|Emissions
|
|
|-
 
|Sulfate production on aerosol haze
|-valign="top"
|Yuxuan Wang (Tsinghua)<br>Rokjin Park (Seoul Nat'l Univ.)
|EDGAR v8.1_toxHg emissions for 1970-2022
|Eric Roy (MIT)
|Emissions
|
|
|-
 
|Diurnal variation of NH3 emissions
|-valign="top"
|Daven Henze (UC Boulder)
|Improve pressure handling in GCHP advection
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
|GCHP
|
|
|-
 
|Time-varying Arctic parameterizations
|-valign="top"
|Jenny Fisher (Wollongong)
|Add error trap for duplicate scale factors in HEMCO
|Bob Yantosca (Harvard)
|HEMCO
|
|
|-
 
|Future US emissions inventories of Hg
|-valign="top"
|Amanda Giang (MIT)
|Integration testing: Add stretched grid
|Lizzie Lundgren (Harvard)
|Quality Assurance
|
|
|-
 
|Coastal inputs of Hg: Rivers and anthropogenic point sources
|-valign="top"
|Helen Amos (Harvard)
|Integration testing: Add GCAP2
|GCST
|Quality Assurance
|
|
|-
 
|Complete revamp of [[Mercury#GTMM|GTMM]]
|-valign="top"
|Bess Corbitt (Harvard)
|Integration testing: Add GCHP mass flux run
|Lizzie Lundgren (Harvard)
|Quality Assurance
|
|
|-
 
|Dust PDF for global simulations
|-valign="top"
|David Ridley (MIT)
|Integration testing: Add run with all diagnostics turned on
|GCST
|Quality Assurance
|
|
|-
 
|Benchmark for aerosol deposition
|-valign="top"
|[[Aerosols overview: projects and developments|Aerosols Working Group]]
|Integration testing: Reinstate TOMAS40
|Betty Croft (Dalhousie/WashU)
|Quality Assurance
|
|
|-
 
|Primary marine emissions of OA
|-valign="top"
|Brett Gantt (NCSU)<br>Matthew Johnson (NASA ARC)
|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
|
 
|-valign="top"
|Updates to Luo deposition scheme
|Gan Luo (Albany)
|Wet Deposition
|
|
*Manuscript submitted to GMD (Aug 2014)
*New version, keep as switch (not default)
|-
 
|[http://acmg.seas.harvard.edu/publications/murray.2013.jgr.pdf Interannual lightning]
|-valign="top"
|Lee Murray (Harvard)
|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
|
|
*Available for GEOS-4, but still needs to be implemented in GEOS-5
 
|}
|}


--[[User:Melissa Payer|Melissa Sulprizio]] 17:45, 19 August 2014 (EDT)
== 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
|
 
|-valign="top"
|Drought-stress algorithm
|Wei Li (Houston)
|Emissions
|
 
|-valign="top"
|Physically-based resolution correction for BVOC emissions using MEGAN
|May Fu (SUSTech)
|Emissions
|
 
|-valign="top"
|Canadian forest fire prediction system (Canada government forecast model)
|Robin Stevens (Montreal)
|Emissions
|
 
|-valign="top"
|Furan emission factors (updates existing emissions)
|Lu Hu (Montana)<br>Lixu Jin (Montana)
|Emissions
|
 
|-valign="top"
|Cooking emissions (not biofuel)
|Kelvin Bates (CU Boulder)
|Emissions
|
 
|-valign="top"
|State-specific annual emissions scaling factors (US) (1990-2021)
|Ishir Dutta (MIT)
|Emissions
|
 
|-valign="top"
|GISS-GC online
|Lee Murray (Rochester)
|External model
|
 
|-valign="top"
|Hybrid MPI-OpenMP in GCHP
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Wildcards in GCHP History
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Output emissions with positive up convention in GCHP
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|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
|
|
|-
 
|High-resolution regional emissions
|-valign="top"
|[[Nested Model Working Group]]
|Re-binning of off-line sea salt and dust for TOMAS
|Betty Croft (Dalhousie)
|Microphysics
|
|
|-
 
|Flexible diagnostic package
|-valign="top"
|[[GEOS-Chem Support Team]]
|TOMAS nucleation updates
|Sam O'Donnell (CSU)
|Microphysics
|
|
|-
 
|[[Grid-independent GEOS-Chem]]: Convection
|-valign="top"
|TBD
|Stratospheric aerosol APM
|[[GEOS-Chem Support Team|GCST]] needs help from community
|Fangqun Yu (SUNY Albany)
|-
|Microphysics
|[[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
|Transition from MERRA-2 to GEOS-IT for benchmarking
|[[GEOS-Chem Support Team|GCST]] needs help from community
|Yuanjian Zhang (WashU)
|-
|Quality Assurance
|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)
|Automate integration testing on AWS
|Yidan Tang (WashU)
|Quality Assurance
|
|
|-
 
|Dynamic precision
|-valign="top"
|[[GEOS-Chem Support Team]]
|Integration testing: Add across end of year run
|GCST
|Quality Assurance
|
|
|-
 
|Profiling GEOS-Chem
|-valign="top"
|TBD
|Integration testing: Add GEOS-IT
|Yuanjian Zhang (WashU)
|Quality Assurance
|
|
|-
 
|Methylmercury in the surface ocean
|-valign="top"
|Anne Soerensen (Harvard)
|Separate mixing, emissions, and drydep
|Yuanjian Zhang (WashU)
|Structural
|
|
|-
 
|Recommendations for optimal timesteps
|-valign="top"
|Sajeev Philip (Dalhousie)
|Intel IFX compiler
|Bob Yantosca (Harvard)
|Structural
|
|
|-
 
|DMS oxidation scheme updating (DMSO, oxidation by BrO)
|-valign="top"
|Tom Breider (Harvard)<br>Becky Alexander (U. Washington)
|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
|
|
|-
 
|More options for terrestrial CO2 fluxes
|-valign="top"
|Kevin Bowman (JPL)
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
|Lizzie Lundgren (Harvard)
|Structural
|
|
|-
 
|Merge organics from specialized simulations into the mainline code
|-valign="top"
|Dylan Millet (U. Minnesota)
|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
|
 
|-valign="top"
|Online OCIM ocean biogeochemistry
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
|Chemistry
|
|
|-
 
|[[Python code for GEOS-Chem|Python interface]]
|-valign="top"
|Beno&icirc;t Bovy (U. Li&egrave;ge-Belgium) + others
|Perchlorate chemistry
|Yuk Chun Chan (UW)
|Chemistry
|
 
|-valign="top"
|Non-stomatal dry deposition (2-layer canopy model)
|Michael Vermeuel (Purdue)
|Dry Deposition
|
|
|-
 
|Uniformity of units
|-valign="top"
|[[GEOS-Chem Support Team]]
|Continental chloride particle emissions (salty dust, road salt)
|Jessica Haskins (Utah)
|Emissions
|
|
|-
 
|Historical inventory of Hg in products and processes
|-valign="top"
|Hannah Horowitz (Harvard)
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
|Ruochong (Tshingua)
|Emissions
|
|
|-
 
|Better link/coupling to ocean processes
|-valign="top"
|[[Chemistry-Climate Working Group]]
|Lightning NOx production rates
|Bex Horner (UCL)
|Emissions
|
|
|-
 
|Better coupling to biogeochemical cycles
|-valign="top"
|[[Chemistry-Climate Working Group]]
|HFO and CF3CHO
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
|
|-
 
|Chemistry feedbacks to vegetation ecosystem
|-valign="top"
|Amos Tai (MIT)
|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
|
|
|-
 
|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)
|Chlorine/Perchlorate
|Yukchun Chan (UW)
|Chemistry
|
|
|-
 
|[[Grid-independent GEOS-Chem]]: Ocean interface
|-valign="top"
|Yanxu Zhang (Harvard)
|Playa dust chemistry to improve Cl over land
|Jessica Haskins (Utah)
|Chemistry
|
|
|-
 
|Updated LAI
|-valign="top"
|Kevin Bowman (JPL)<br>Folkert Boersma (KNMI)
|GFED5 biomass burning
|Eric Roy (MIT)
|Emissions
|
|
|-
 
|Merge dicarbonyl simulation into standard simulation
|-valign="top"
|Tzung-May Fu (Peking)
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|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)
|Soil Hg emissions 2010-2020
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|Dynamic multiple boxes subsurface Arctic Ocean
|-valign="top"
|Helen Amos (Harvard)<br>Anne Soerensen (Harvard)
|Air-sea exchange parameterization
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|[[POPs simulation#PCB simulation|PCB simulation: atmosphere and ocean]]
|-valign="top"
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
|Soil Hg emissions parameterization
|Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|Nighttime isoprene chemistry
|-valign="top"
|Rebecca Schwantes (Caltech)
|Sea salt uptake of GOM
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|ClNO2
|-valign="top"
|Mat Evans (York)
|Photoreduction rate constant
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|Dissolved Fe/Cu
|-valign="top"
|Matthew Johnson (NCSU)<br>Jingqiu Mao (NOAA/GFDL)
|new observations (2010-2020) in standardized Hg benchmark for intercomparison
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|UV absorption of organics/brown carbon
|-valign="top"
|Rokjin Park (Seoul Nat'l Univ.)
|Hg simulation in GCHP
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|CO-CO2-CH4 simulation
|-valign="top"
|Dylan Jones (U. Toronto)<br>Annemarie Fraser (Edinburgh)
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
|Hannah Horowitz (UIUC)
|Hg simulation
|
|
|-
 
|Updated HCN simulation
|-valign="top"
|Dylan Jones (U. Toronto)
|possibly updating Hg oxidation chemistry based on Utah field campaigns
|Jessica Haskins (Utah)
|Hg simulation
|
|
|-
 
|[[Adding_Passive_Tracers|Passive tracer module]]
|-valign="top"
|Jenny Fisher (Wollongong)
|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
|
|
'''''[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"
|-
|Extend IMI to CO2 (ICI)
|Plume in-grid lightning NOx emissions
|Hannah Nesser (JPL)  
|Alicia Gressent (U. Toulouse)
|Inversions
|
 
|-valign="top"
|Global emission inventory of metals
|Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U)
|Metals simulation
|
 
|-valign="top"
|Investigate and improve performance of aerosol chemistry
|Bob Yantosca (Harvard)
|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 19:31, 27 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 Not delivered
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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