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 May 2013 ==
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.
|-
 
|[[GEOS-5_issues#Updates_on_GEOS-5_PBL_height_.26_diurnal_variation_of_aerosols|Correction for GEOS-5 PBL heights]]
{| border=1 cellspacing=0 cellpadding=5  
|Sajeev Philip (Dalhousie)
|-bgcolor="#CCCCCC"
|Approved 16 Oct 2012 ([[GEOS-Chem v9-02 benchmark history#v9-02a|v9-02a]]); awaiting release
!width="200px"|Feature
|-
!width="200px"|Contributor(s)
|[[Soil_NOx_emissions#Updated_soil_NOx_emissions_algorithm|New soil NOx emission module]]
!width="100px"|Model scope
|Rynda Hudman (UC Berkeley)<br>Neil Moore (Dalhousie)<br>Bram Maasakkers (Eindhoven)  
!width="100px"|Ease of implementation
|Approved 29 Oct 2012 ([[GEOS-Chem v9-02 benchmark history#v9-02b|v9-02b]]); awaiting release
!width="300px"|Notes and References
|-
 
|[[EPA/NEI05_North_American_emissions|EPA/NEI2005 Hg emissions for US]]
|-valign="top"
|Lyatt Jaegl&eacute; (U. Washington)
|New version of CEDS at 0.1 deg
|Approved 29 Nov 2012 ([[GEOS-Chem v9-02 benchmark history#v9-02c|v9-02c]]); awaiting release
|Dandan Zhang (WashU)
|-
|Emissions
|[[Mercury#Streets future Hg emissions|Streets future Hg emissions]]
|Simple
|Bess Corbitt (Harvard)
|
|Approved 29 Nov 2012 ([[GEOS-Chem v9-02 benchmark history#v9-02c|v9-02c]]); awaiting release
*[https://github.com/geoschem/geos-chem/pull/2171 geos-chem PR #2171]
|-
 
|[[Mercury#Nested-grid Hg simulation over North America|Nested-grid Hg simulation]]
|-valign="top"
|Lyatt Jaegl&eacute; (U. Washington)
|Use USTAR read from GEOS instead of calculating from U10M and V10M
|Approved 29 Nov 2012 ([[GEOS-Chem v9-02 benchmark history#v9-02c|v9-02c]]); awaiting release
|Yuanjian Zhang (WashU)
|-
|Emissions
|[[Mercury#Updated Hg.280.29 oxidation kinetics|Updated Hg(0) oxidation kinetics]]
|Simple
|Bess Corbitt (Harvard)<br>Justin Parrella (Harvard)
|
|Approved 29 Nov 2012 ([[GEOS-Chem v9-02 benchmark history#v9-02c|v9-02c]]); awaiting release
*[https://github.com/geoschem/HEMCO/pull/279 HEMCO PR #279]
|-
*NOTE: WashU will recompute mass tuning factors for each met field & resolution (GCClassic)
|[[Mercury#Capability to use GEOS-Chem Br.2FBrO fields in Hg simulation|Capability to use GEOS-Chem Br/BrO fields in Hg simulation]]
 
|Bess Corbitt (Harvard)<br>Justin Parrella (Harvard)
|-valign="top"
|Approved 29 Nov 2012 ([[GEOS-Chem v9-02 benchmark history#v9-02c|v9-02c]]); awaiting release
|Ongoing carbon simulation fixes in GCClassic and GCHP
|-
|GCST
|[[POPs simulation|POPs simulation: Polycyclic aromatic hydrocarbons]]
|Carbon simulation
|Carey Friedman (MIT)
|Medium
|Approved 29 Nov 2012 ([[GEOS-Chem v9-02 benchmark history#v9-02c|v9-02c]]); awaiting release
|
|-
*[https://github.com/geoschem/GCHP/issues/440 GCHP issue #440]
|[[Updating_standard_chemistry_with_JPL_10-6|Inorganic chemistry updates]]
*[https://github.com/geoschem/geos-chem/issues/2463 geos-chem issue #2463]
|Mat Evans (York)
*[https://github.com/geoschem/geos-chem/pull/2510 geos-chem PR #2510]
|Approved 07 Feb 2013 ([[GEOS-Chem v9-02 benchmark history#v9-02f|v9-02f]]); awaiting release
 
|-
|-valign="top"
|[[Methyl peroxy nitrate chemistry|Methyl peroxy nitrate (MPN) chemistry]]
|Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver
|Ellie Browne (UC Berkeley)
|Bob Yantosca (Harvard)
|Approved 07 Feb 2013 ([[GEOS-Chem v9-02 benchmark history#v9-02f|v9-02f]]); awaiting release
|Chemistry
|-
|Medium
|[[New_isoprene_scheme#Update_One_-_RO2.2BHO2_Reaction_Rate|Fix RO2+HO2 rate constant]]
|
|Fabien Paulot (Harvard)
*[https://github.com/geoschem/geos-chem/pull/2482 geos-chem PR #2482]
|Approved 22 Mar 2013 ([[GEOS-Chem v9-02 benchmark history#v9-02g|v9-02g]]); awaiting release
*[https://github.com/geoschem/geos-chem/pull/2483 geos-chem PR #2483]
|-
 
|[[ChemTelecon20111202|Improvements to isoprene chemistry, standardization of Paulot Scheme]]
|-valign="top"
|Fabien Paulot (Harvard)<br>Eloise Marais (Harvard)<br>Jingqiu Mao (NOAA/GFDL)<br>Mat Evans (York)
|Fix obspack - not working in 14.4.0
|Approved 22 Mar 2013 ([[GEOS-Chem v9-02 benchmark history#v9-02g|v9-02g]]); awaiting release
|Bob Yantosca (Harvard)
|-
|Diagnostics
|[[ChemTelecon20111202|Improved HO2 uptake by aerosol]]
|Medium
|Jingqiu Mao (NOAA/GFDL)
|
|To be included in [[GEOS-Chem v9-02|v9-02]]
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]
|-
 
|Removal of NOx-Ox partitioning
|-valign="top"
|[[GEOS-Chem Support Team]]
|Make GC-Classic bit-for-bit reproducible upon restart<br>(part 1 of 2)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|Lizzie Lundgren (Harvard)
|-
|GC-Classic
|[[ChemTelecon20111202|Inhibition of N2O5 hydrolysis by aerosol nitrate]]
|Medium
|Lin Zhang (Peking University)
|
|To be included in [[GEOS-Chem v9-02|v9-02]]
*[https://github.com/geoschem/geos-chem/pull/2521 geos-chem PR #2521]
|-
 
|[[Grid-Independent_GEOS-Chem:_Chemistry_Component|Grid-independent GEOS-Chem: Chemistry]]
|-valign="top"
|[[GEOS-Chem Support Team]]<br>GMAO
|Capture all trop and PBL height changes in budget diagnostics
|To be included in [[GEOS-Chem v9-02|v9-02]]
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|-
|Diagnostics
|[[TOMAS_aerosol_microphysics#Update_April_2013|Inline the TOMAS aerosol microphysics code into standard code]]
|Medium
|Sal Farina (CSU)
|
|To be included in [[GEOS-Chem v9-02|v9-02]]
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
|-
|[[Anthropogenic_emissions#CAC|Updated Canadian NH3 inventory]]
|Wai-Ho Lo (Dalhousie)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|[[Historical_and_Future_Emissions#RCP_future_emission_scenarios |RCP emission scenarios]]
|Chris Holmes (UC Irvine)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|EDGAR v4.2 emissions for CH4 simulation
|Kevin Wecht (Harvard)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|[[Scale factors for anthropogenic emissions|Update anthropogenic scale factors through 2010]]
|Aaron van Donkelaar (Dalhousie)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|Update to EDGAR 4 anthropogenic emissions
|Qiang Zhang (Tsinghua)<br>Sajeev Philip (Dalhousie)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|Interannual lightning
|Lee Murray (Harvard)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|[[Aircraft emissions#MIT aviation emissions inventory|AEIC aircraft emissions inventory]]
|Sebastian D. Eastham(MIT)<br>Steven Barret (MIT)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|[[EPA/NEI05 North American emissions#Updated NH3 seasonal scaling factors in v9-02|Updated NH3 seasonal scaling factors over the US]]
|Lin Zhang (Peking University)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|[[Secondary organic aerosols#SOA simulation with semi-volatile POA|Expanded SOA]]
|Havala Pye (EPA/ORD)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|[[Mineral_dust_aerosols#Surface_chemistry_on_dust|Acid uptake on dust aerosols]]
|T. Duncan Fairlie (NASA/LARC)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|Cloudwater pH for sulfate formation
|Becky Alexander (U. Washington)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|Update jv_spec.dat with better representation of OC growth with RH and correction to sulfate optics
|David Ridley (MIT)<br>Randall Martin (Dalhousie)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|Global simulations with [[GEOS-5.7.2|GEOS-5 "FP"]] data product from GMAO
|[[GEOS-Chem Support Team]]
|To be included in [[GEOS-Chem v9-02|v9-02]]


*'''''NOTE:''''' The GEOS-5 "FP" product (aka GEOS-5.9.0) is what we will use for the 0.25&deg; x 0.3125&deg; nested simulations.  To run the nested simulations (the 2 items listed below), we also must be able to run the global simulations with this met data product in order to save out transport boundary conditons.
|-valign="top"
|-
|Derive convective precipitation flux if using FP/IT generated with Grell-Freitas
|Nested-grid model at 0.25&deg; x 0.3125&deg; resolution
|Yuanjian Zhang (WashU)<br>Viral Shah (GMAO)<br>Lizzie Lundgren (Harvard)
|Yuxuan Wang (Tsinghua)
|Convection
|To be included in [[GEOS-Chem v9-02|v9-02]]
|Medium
|-
|
|High-resolution emissions for above nested-grid model
*[https://github.com/geoschem/geos-chem/issues/2469 geos-chem Issue #2469]
|Yuxuan Wang (Tsinghua)
*[https://github.com/geoschem/geos-chem/pull/2523 geos-chem PR #2523]
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|Improve temporal resolution of anthropogenic CO2 sources
|Ray Nassar (Environment Canada)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|-
|Replace CASA CO2 biosphere climatology with year-specific fluxes
|Ray Nassar (Environment Canada)<br>Dylan Jones (U. Toronto)
|To be included in [[GEOS-Chem v9-02|v9-02]]


'''''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. 
|-
|[[Boundary_layer_mixing#Online_PBL_height_calculation_in_GEOS-Chem|Online PBL height calculation]]
|Sajeev Philip (Dalhousie)<br>Erica McGrath-Spangler(NASA GSFC)
|To be included in [[GEOS-Chem v9-02|v9-02]]
|}
|}


--[[User:Melissa Payer|Melissa Payer]] 16:52, 14 May 2013 (EDT)
== 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"
|Retire CH4, CO2, tagCO simulations in favor of carbon simulation
|Melissa Sulprizio (Harvard)
|Carbon gases
|Simple
|
|
*[https://github.com/geoschem/geos-chem/issues/2387 geos-chem issue #2387]


=== Ready to go in ===
|-valign="top"
|Correct the issue that injection height has been artificially decreased by HEMCO
|Lixu Jun (Montana)
|Emissions
|Simple
|Delivered<br>June 2024
|
*[https://github.com/geoschem/geos-chem/issues/2330 geos-chem issue #2330]
*[https://github.com/geoschem/geos-chem/pull/2358 geos-chem PR #2358]


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Capability to run GCClassic at 0.125x0.15625 resolution
!width="400px"|Item
|Melissa Sulprizio (Harvard)<br>Xiaolin Wang (Harvard)
!width="300px"|Author(s)
|Nested grid
!width="400px"|Status
|Simple
|-
|Delivered
|[[MEGAN_biogenic_emissions#Update_to_MEGAN2.1_.28Guenther_et_al..2C_2012.29|Update to MEGAN2.1]]
|Dylan Millet (U. Minnesota)
|
|
|-
*[https://github.com/geoschem/geos-chem/pull/1980 geos-chem PR #1980]
|UNEP 2010 anthropogenic Hg emissions
*[https://github.com/geoschem/HEMCO/pull/290 HEMCO PR #290]
|Shaojie Song (MIT)
 
|-valign="top"
|Strat-adjusted RF in GCC and GCHP
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Radiation
|Simple
|Delivered
|
|
|-
*[https://github.com/geoschem/geos-chem/pull/2525 geos-chem PR #2525]
|Historical anthropogenic atmospheric emissions of Hg
 
|Bess Corbitt (Harvard)
|-valign="top"
|Archived TCR-2 OH fields for carbon simulations
|Kazu Miyazaki (JPL)<br>Melissa Sulprizio (Harvard)
|Input data
|Simple
|Data delivered<br>Oct 2024
|
|
|-
*This will be the default OH, but users will have the option of selecting other OH fields
|Subsurface ocean Hg concentration update
*[https://github.com/geoschem/geos-chem/issues/2537 geos-chem issue #2537]
|Anne Soerensen (Harvard)
 
|-valign="top"
|Dust non-sphericity impacts on optical properties
|Inderjeet Singh (WashU)
|Aerosols
|Medium
|Not yet delivered
|
|
|-
 
|NEI 2008 Hg emission inventory
|}
|Yanxu Zhang (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
|
|
|-
*[https://github.com/geoschem/geos-chem/issues/2392 geos-chem issue #2392]
|NEI 2008 emissions with hourly resolution
 
|Katie Travis (Harvard)
|-valign="top"
|Update UCX to include gravitational settling of aerosol species beyond just BCPI
|Conor Barker (UCL)<br>Eloise Marais (UCL)
|Aerosols
|Not delivered
|
|
|-
 
|CO2 direct effect on isoprene emissions
|-valign="top"
|Amos Tai (MIT)
|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)
|PAN/organics
 
|Emily Fischer (Harvard)
|-valign="top"
|Global organic N dep from various emissions; nitrate aromatics updates
|May Fu (SUSTech)
|Chemistry +<br>Deposition
|Not delivered
|
|
|-
 
|Arctic Hg cycling
|-valign="top"
|Jenny Fisher (Wollongong)
|Dry deposition to F90 to improve readability
|Chris Holmes (FSU)
|Dry Deposition
|Not delivered
|
|
|-
*[https://github.com/geoschem/geos-chem/issues/2389 geos-chem issue #2389]
|Criegee intermediate
 
|Dylan Millet (U. Minnesota)
|-valign="top"
|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]
|VBS SOA option
 
|Rokjin Park (Seoul Nat'l Univ.)
|-valign="top"
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
|Chris Holmes (FSU)
|Emissions
|Not delivered
|
|
|-
*[https://github.com/geoschem/geos-chem/issues/2388 geos-chem issue #2388]
|Other organics
 
|Dylan Millet (U. Minnesota)
|-valign="top"
|China agriculture NH3 emissions
|Amos Tai (CUHK)
|Emissions
|Not delivered
|
|
|-
 
|Tagged sulfate and nitrate simulation
|-valign="top"
|Becky Alexander (U. Washington)
|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.


--[[User:Melissa Payer|Melissa Payer]] 16:41, 14 May 2013 (EDT)
|-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


=== Almost there (< 6 months) ===
|-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


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Australian Hg emissions (2000-2019)
!width="400px"|Item
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
!width="300px"|Author(s)
|Emissions
!width="400px"|Status
|Not delivered
|-
|
|Coupling to 3D ocean: OFFTRACK
*[https://pubs.rsc.org/en/content/articlelanding/2022/em/d2em00019a MacFarlane et al. (2024)]
|Yanxu Zhang (Harvard)
*Includes emissions from black and brown coal power plants, various metal production/processing sources (Aluminium, gold, copper, lead, etc), waste products, cement production, oil refining and petroleum, chlor alkali plants, and cremation
 
|-valign="top"
|Hg geogenic emissions (volcanic, rock weathering)
|Eric Roy (MIT)
|Emissions
|Not delivered
|
|
|-
*[https://github.com/geoschem/geos-chem/issues/2361 geos-chem #2361]
|Dry deposition updates for Hg simulation
*[https://gmd.copernicus.org/preprints/gmd-2024-65/ Dastoor et al. (2024)]
|Bess Corbitt (Harvard)
 
|-valign="top"
|Hg biomass burning - FINN2.5 & GFED4
|Eric Roy (MIT)
|Emissions
|Not delivered
|
|
|-
*[https://github.com/geoschem/geos-chem/issues/2361 geos-chem #2361]
|New Hg soil emissions standard from offline GTMM
*[https://gmd.copernicus.org/preprints/gmd-2024-65/ Dastoor et al. (2024)]
|Bess Corbitt (Harvard)
 
|-valign="top"
|BCC-GC online
|Lin Zhang (PKU)
|External Model
|Not delivered
|
|
|-
 
|Pre- and online processing of emissions
|-valign="top"
|Qiang Zhang (Tsinghua)<br>Christoph Keller (Harvard)
|GC-YIBS with online fire emissions
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
|External Model
|Not delivered
|
|
|-
 
|MASAGE NH3 emissions
|-valign="top"
|Fabien Paulot (Harvard)
|GISS-GC offline (GCAP)
|Lee Murray (Rochester)
|GCAP
|Not delivered
|
|
|-
 
|Benchmark procedure for nested model
|}
|[[Nested Model Working Group]]
 
== Almost there (< 6 months) ==
 
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
 
{|border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
!width="200px"|Feature
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="420px"|Notes and References
 
|-valign="top"
|Fixes to stratospheric aerosol settling
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Aerosols
|
|
|-
 
|Online GCRT
|-valign="top"
|David Ridley (MIT)<br>Colette Heald (MIT)
|DMS chemistry in v14
|Linia Tashmim (UCR)<br>Will Porter (UCR)
|Chemistry
|
|
|-
 
|TOMAS parallelization
|-valign="top"
|Sal Farina (CSU)<br>Jeff Pierce (CSU)
|KPP standalone + 3D Interface
|Obin Sturm (USC)
|Chemistry
|
|
|-
 
|Reduced TOMAS (12/15 bins)
|-valign="top"
|Sal Farina (CSU)<br>Jeff Pierce (CSU)
|NO2+OH+H2O kinetics
|Mat Evans (York)
|Chemistry
|
|
|-
 
|APM v2, synch with v9-02
|-valign="top"
|Fangqun Yu (SUNY Albany)
|LSODES solver in KPP for faster kinetics
|Haipeng Lin (Harvard)
|Chemistry
|
|
|-
 
|Retain native resolution 2D surface winds
|-valign="top"
|David Ridley (MIT)<br>[[GEOS-Chem Support Team]]
|Load balancing in chemistry solver (GCHP)
|Zhouran Sun (WashU)
|Chemistry +<br>Performance
|
|
|-
 
|FLEXCHEM
|-valign="top"
|Mat Evans (York)<br>Mike Long (Harvard)
|Active chemistry in mesosphere for both GCHP and GCClassic
|Helena McDonald (MIT)<br>Sebastian Eastham (ICL)
|Chemistry
|
|
|-
 
|Develop new coding standards
|-valign="top"
|[[GEOS-Chem Support Team]]
|Updated aromatic oxidation
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
|
|-
 
|Unit testing
|-valign="top"
|[[GEOS-Chem Support Team]]
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Laura Yang (Harvard)
|Chemistry
|
|
|-
 
|[[Grid-independent GEOS-Chem]]: Dry deposition
|-valign="top"
|[[GEOS-Chem Support Team]]<br>GMAO
|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
|[[Grid-Independent GEOS-Chem: Emissions Component|Grid-independent GEOS-Chem: Emissions]]
 
|Christoph Keller (Harvard)<br>[[GEOS-Chem Support Team]]<br>GMAO
|-valign="top"
|Documentation for adding additional aerosol species
|Connor Barker (UCL)
|Documentation
|
|
|-
 
|[[Grid-independent GEOS-Chem]]: NetCDF I/O
|-valign="top"
|[[GEOS-Chem Support Team]]
|Column diagnostics
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
|Diagnostics
|
|
|-
 
|CMS CO2 ocean fluxes
|-valign="top"
|Kevin Bowman (JPL)
|TOMAS rate diagnostics -- improve performance
|Betty Croft (WashU/Dal)
|Diagnostics +<br>Performance
|
|
|-
 
|WHOI CO2 ocean fluxes
|-valign="top"
|Andrew Schuh (CSU)
|Archive gamma values from heterogeneous chemistry
|Bob Yantosca (Harvard)
|Diagnostics
|
|
|-
 
|Dynamic subsurface ocean
|-valign="top"
|Helen Amos (Harvard)
|RRTMG Documentation
|GCST
|Documentation
|
|
|-
 
|Updates to PAH code
|-valign="top"
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
|Canopy Physics Model
|Sam Silva (MIT)
|Dry Deposition
|
|
|-
*Available at https://zenodo.org/records/3614062#.XzvrH5NKjOR (GEOS-Chem 12.3.0)
|Fast-JX
 
|Sebastian Eastham (MIT)<br>Jingqiu Mao (NOAA/GFDL)
|-valign="top"
|Dry deposition diagnostics by land cover
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Dry Deposition
|
|
|-
 
|Fix for CH4 concentrations after 2008
|-valign="top"
|Lee Murray (Harvard)
|Dry deposition process diagnostics
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Dry Deposition
|
|
|-
 
|Two-way nested grid simulation
|-valign="top"
|Jintai Lin (Peking)
|Biomass burning for TOMAS
|Nicole June (CSU)
|Emissions +<br>Microphysics
|
|
|-
 
|Sub-domain within the nested-grid domain
|-valign="top"
|Yuxuan Wang (Tsinghua)<br>Jintai Lin (Peking)
|Historic biomass burning (1750-2010)
|Pengfei Liu (Georgia Tech)
|Emissions
|
|
|-
 
|Offline satellite simulator tool
|-valign="top"
|[[Nested Model Working Group]]
|Rice methane emissions
|Zichong Cheng (Harvard)
|Emissions+<br>Carbon simulation
|
|
|-
 
|Metal catalyzed oxidation of SO2
|-valign="top"
|Becky Alexander (U. Washington)
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
|Emissions
|
|
|-
 
|Sulfate production on aerosol haze
|-valign="top"
|Yuxuan Wang (Tsinghua)<br>Rokjin Park (Seoul Nat'l Univ.)
|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)
|Diurnal variation of NH3 emissions
 
|Daven Henze (UC Boulder)
|-valign="top"
|Snowpack Br2 emission
|Chris Holmes (FSU)
|Emissions
|
|
|-
 
|Impaction scavenging for hydrophobic BC
|-valign="top"
|Qiaoqiao Wang (Harvard)
|EDGAR v8.1_toxHg emissions for 1970-2022
|Eric Roy (MIT)
|Emissions
|
|
|-
 
|Homogeneous IN removal
|-valign="top"
|Qiaoqiao Wang (Harvard)
|Improve pressure handling in GCHP advection
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
|GCHP
|
|
|-
 
|Time-varying Arctic parameterizations
|-valign="top"
|Jenny Fischer (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 GCHP mass flux run
|Lizzie Lundgren (Harvard)
|Quality Assurance
|
|
|-
 
|Complete revamp of GTMM
|-valign="top"
|Bess Corbitt (Harvard)
|Integration testing: Reinstate TOMAS40
|Betty Croft (Dalhousie/WashU)
|Quality Assurance
|
|
|-
 
|Dust PDF for global simulations
|-valign="top"
|David Ridley (MIT)
|Continue cleanup of C-preprocessor switches
|Lizzie Lundgren (Harvard)
|Structural
|
|
|-
 
|Stratospheric aerosols
|-valign="top"
|Sebastian Eastham (MIT)
|Updates to Luo deposition scheme
|Gan Luo (Albany)
|Wet Deposition
|
|
|-
*New version, keep as switch (not default)
|Benchmark for aerosol deposition
 
|[[Aerosols overview: projects and developments|Aerosols Working Group]]
|-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 Payer]] 16:41, 14 May 2013 (EDT)
== Over the horizon (6-12 months) ==


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


{| border=1 cellspacing=0 cellpadding=5
{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
|- bgcolor="#cccccc"
!width="400px"|Item
!width="200px"|Feature
!width="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
|
|
|-
 
|High-resolution regional emissions
|-valign="top"
|[[Nested Model Working Group]]
|Heterogeneous sulfate chemistry
|Katie Travis (NASA)
|Chemistry
|
|
|-
 
|Flexible diagnostic package
|-valign="top"
|[[GEOS-Chem Support Team]]
|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"
|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"
|Cooking emissions (not biofuel)
|Kelvin Bates (CU Boulder)
|Emissions
|
|
|-
 
|[[Grid-independent GEOS-Chem]]: Convection
|-valign="top"
|TBD
|State-specific annual emissions scaling factors (US) (1990-2021)
|[[GEOS-Chem Support Team|GCST]] needs help from community
|Ishir Dutta (MIT)
|-
|Emissions
|[[Grid-independent GEOS-Chem]]: Wet scavenging
|TBD
|[[GEOS-Chem Support Team|GCST]] needs help from community
|-
|[[Grid-independent GEOS-Chem]]: PBL mixing
|TBD
|[[GEOS-Chem Support Team|GCST]] needs help from community
|-
|[[Grid-independent GEOS-Chem]]: Transport
|TBD
|[[GEOS-Chem Support Team|GCST]] needs help from community
|-
|[[Grid-independent GEOS-Chem]]: Packaging ESMF/MAPL
|[[GEOS-Chem Support Team]]<br>GMAO
|
|
|-
 
|3D VOC source for tagged CO simulation and enhanced tagging of secondary CO
|-valign="top"
|Jenny Fisher (Wollongong)
|GISS-GC online
|Lee Murray (Rochester)
|External model
|
|
|-
 
|Satellite diagnostic for XCO2
|-valign="top"
|Andrew Schuh (CSU)
|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 emissions
|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
|
|
|-
 
|DMS chemistry
|-valign="top"
|Tom Breider (Harvard)
|Transition from MERRA-2 to GEOS-IT for benchmarking
|Yuanjian Zhang (WashU)
|Quality Assurance
|
|
|-
 
|Dynamic precision
|-valign="top"
|[[GEOS-Chem Support Team]]
|Automate integration testing on AWS
|Yidan Tang (WashU)
|Quality Assurance
|
|
|-
 
|Profiling GEOS-Chem
|-valign="top"
|TBD
|Integration testing: Add across end of year run
|GCST
|Quality Assurance
|
|
|-
 
|Methylmercury in the surface ocean
|-valign="top"
|Anne Soerensen (Harvard)
|Integration testing: Add GEOS-IT
|Yuanjian Zhang (WashU)
|Quality Assurance
|
|
|-
 
|Primary marine emissions of OA
|-valign="top"
|Brett Gantt (NCSU)
|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
|
|
|-
 
|Criegee intermediates for sulfuric acid
|-valign="top"
|Dylan Millet (U. Minnesota)<br>Mat Evans (York)
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
|Lizzie Lundgren (Harvard)
|Structural
|
|
|-
 
|More options for terrestrial CO2 fluxes
|-valign="top"
|Kevin Bowman (JPL)
|Limit allocation of State_Met to what is needed per simulation
|Melissa Sulprizio (Harvard)
|Structural
|
|
|-
 
|FINN biomass burning emissions
|-valign="top"
|Jenny Fisher (Wollongong)
|Using 3-D precipitation fluxes to calculate precipitation formation and re-evaporation in scavenging (to be consistent with GEOS/GOCART & ground precipitation)
|Gan Luo (Albany)<br>Hongyu Liu (NIA/LaRC)<br>Bo Zhang (NIA/LaRC)
|Wet deposition
|
|
|}
|}


--[[User:Melissa Payer|Melissa Payer]] 16:41, 14 May 2013 (EDT)
== Longer term (12-24 months)==


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


{| border=1 cellspacing=0 cellpadding=5
{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
|- bgcolor="#cccccc"
!width="400px"|Item
!width="200px"|Feature
!width="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 interface
|-valign="top"
|Beno&icirc;t Bovy (U. Li&egrave;ge)
|Perchlorate chemistry
|Yuk Chun Chan (UW)
|Chemistry
|
|
|-
 
|Uniformity of units
|-valign="top"
|[[GEOS-Chem Support Team]]
|Non-stomatal dry deposition (2-layer canopy model)
|Michael Vermeuel (Purdue)
|Dry Deposition
|
|
|-
 
|Historical inventory of Hg in products and processes
|-valign="top"
|Hannah Horowitz (Harvard)
|Continental chloride particle emissions (salty dust, road salt)
|Jessica Haskins (Utah)
|Emissions
|
|
|-
 
|Better link/coupling to ocean processes
|-valign="top"
|TBD
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
|Ruochong (Tshingua)
|Emissions
|
|
|-
 
|Better coupling to biogeochemical cycles
|-valign="top"
|TBD
|Lightning NOx production rates
|Bex Horner (UCL)
|Emissions
|
|
|-
 
|Chemistry feedbacks to vegetation ecosystem
|-valign="top"
|Amos Tai (MIT), TBD
|HFO and CF3CHO
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
|
|-
 
|Stratospheric chemistry
|-valign="top"
|Sebastian Eastham (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)
|GFED5 biomass burning
|Eric Roy (MIT)
|Emissions
|
|
|-
 
|Grid-independent GEOS-Chem: Ocean interface
|-valign="top"
|Yanxu Zhang (Harvard)
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|Updated LAI
|-valign="top"
|Kevin Bowman (JPL)<br>Folkert Boersma (KNMI)
|Soil Hg emissions 2010-2020
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|Merge dicarbonyl simulation into standard simulation
|-valign="top"
|Tzung-May Fu (Peking)
|Air-sea exchange parameterization
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|Global 0.5x0.667 capability for CO2/CH4
|-valign="top"
|Liang Feng (Edinburgh)<br>Dylan Jones (U. Toronto)
|Soil Hg emissions parameterization
|Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|Dynamic multiple boxes subsurface Arctic Ocean
|-valign="top"
|Helen Amos (Harvard)<br>Anne Soerensen (Harvard)
|Sea salt uptake of GOM
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|PCB simulation: atmosphere and ocean
|-valign="top"
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
|Photoreduction rate constant
|Eric Roy (MIT)
|Hg simulation
|
|
|-
 
|Nighttime isoprene chemistry
|-valign="top"
|Rebecca Schwantes (Caltech)
|New observations (2010-2020) in standardized Hg benchmark for intercomparison
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|
|-
 
|ClNO2
|-valign="top"
|Mat Evans (York)
|Hg simulation in GCHP
|Eric Roy (MIT)
|Hg simulation
|
 
|-valign="top"
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
|Hannah Horowitz (UIUC)
|Hg simulation
|
 
|-valign="top"
|Possibly updating Hg oxidation chemistry based on Utah field campaigns
|Jessica Haskins (Utah)
|Hg simulation
|
 
|-valign="top"
|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
|
 
|-valign="top"
|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
|
 
|-valign="top"
|Investigate and improve performance of aerosol chemistry
|Bob Yantosca (Harvard)
|Performance
|
|
|-
 
|Dissolved Fe/Cu
|-valign="top"
|Matthew Johnson (NCSU)<br>Jingqiu Mao (NOAA/GFDL)
|PAH - update from version 11
|Lexia Cicone (MIT)
|POPs simulation
|
|
|-
 
|UV absorption of organics/brown carbon
|-valign="top"
|Rokjin Park (Seoul Nat'l Univ.)
|Species database more accessible; doc updates; TOL discussion
|Jessica Haskins (Utah)
|Structural
|
|
|-
 
|CO-CO2-CH4 simulation
|-valign="top"
|Dylan Jones (U. Toronto)<br>Annemarie Fraser (Edinburgh)
|Stretched-grid plotting in GCPy
|Killian Murphy (York)
|Tools
|
|
|-
 
|Updated HCN simulation
|-valign="top"
|Dylan Jones (U. Toronto)
|Model inter-comparison of transport (GEOS, GCHP, GCClassic)
|Lizzie Lundgren (Harvard), Emma Knowland (NASA)
|Transport
|
|
|-
 
|Passive tracer module
|-valign="top"
|Jenny Fisher (Wollongong)
|Comparing mass fluxes in GCHP vs. traditional lat/lon wind
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
|Transport
|
|
|}
|}
--[[User:Melissa Payer|Melissa Payer]] 16:41, 14 May 2013 (EDT)

Revision as of 16:19, 31 October 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
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple
Use USTAR read from GEOS instead of calculating from U10M and V10M Yuanjian Zhang (WashU) Emissions Simple
  • HEMCO PR #279
  • NOTE: WashU will recompute mass tuning factors for each met field & resolution (GCClassic)
Ongoing carbon simulation fixes in GCClassic and GCHP GCST Carbon simulation Medium
Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver Bob Yantosca (Harvard) Chemistry Medium
Fix obspack - not working in 14.4.0 Bob Yantosca (Harvard) Diagnostics Medium
Make GC-Classic bit-for-bit reproducible upon restart
(part 1 of 2) 		Lizzie Lundgren (Harvard) GC-Classic Medium
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics Medium
Derive convective precipitation flux if using FP/IT generated with Grell-Freitas Yuanjian Zhang (WashU)
Viral Shah (GMAO)
Lizzie Lundgren (Harvard) 		Convection 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
Retire CH4, CO2, tagCO simulations in favor of carbon simulation Melissa Sulprizio (Harvard) Carbon gases Simple
Correct the issue that injection height has been artificially decreased by HEMCO Lixu Jun (Montana) Emissions Simple Delivered
June 2024
Capability to run GCClassic at 0.125x0.15625 resolution Melissa Sulprizio (Harvard)
Xiaolin Wang (Harvard) 		Nested grid Simple Delivered
Strat-adjusted RF in GCC and GCHP Connor Barker (UCL)
Eloise Marais (UCL) 		Radiation Simple Delivered
Archived TCR-2 OH fields for carbon simulations Kazu Miyazaki (JPL)
Melissa Sulprizio (Harvard) 		Input data Simple Data delivered
Oct 2024
  • This will be the default OH, but users will have the option of selecting other OH fields
  • geos-chem issue #2537
Dust non-sphericity impacts on optical properties Inderjeet Singh (WashU) Aerosols Medium Not yet delivered

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
Update UCX to include gravitational settling of aerosol species beyond just BCPI Conor Barker (UCL)
Eloise Marais (UCL) 		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)
Global organic N dep from various emissions; nitrate aromatics updates May Fu (SUSTech) Chemistry +
Deposition 		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 Hg emissions (2000-2019) Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Emissions Not delivered
  • MacFarlane et al. (2024)
  • Includes emissions from black and brown coal power plants, various metal production/processing sources (Aluminium, gold, copper, lead, etc), waste products, cement production, oil refining and petroleum, chlor alkali plants, and cremation
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

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
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
NO2+OH+H2O kinetics Mat Evans (York) Chemistry
LSODES solver in KPP for faster kinetics Haipeng Lin (Harvard) Chemistry
Load balancing in chemistry solver (GCHP) Zhouran Sun (WashU) Chemistry +
Performance
Active chemistry in mesosphere for both GCHP and GCClassic Helena McDonald (MIT)
Sebastian Eastham (ICL) 		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
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 Liu (Georgia Tech) Emissions
Rice methane emissions Zichong Cheng (Harvard) Emissions+
Carbon simulation
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 GCHP mass flux run Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Reinstate TOMAS40 Betty Croft (Dalhousie/WashU) Quality Assurance
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
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
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 emissions 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
Using 3-D precipitation fluxes to calculate precipitation formation and re-evaporation in scavenging (to be consistent with GEOS/GOCART & ground precipitation) Gan Luo (Albany)
Hongyu Liu (NIA/LaRC)
Bo Zhang (NIA/LaRC) 		Wet deposition

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
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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