GEOS-Chem model development priorities: Difference between revisions

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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
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]].


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.
== Merged and awaiting release ==


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.
See the links below for items merged and awaiting release.


== Priorities assigned to upcoming GEOS-Chem versions ==
{| border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
!width="300px"|Mergeable at any time
!width="200px"|Version in development
 
|-valign="top"
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
|align="center"|'''[[GEOS-Chem 14.5.0]]'''
 
|}
 
== Feature integration in progress ==
 
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.
 
{| border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
!width="200px"|Feature
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="100px"|Ease of implementation
!width="300px"|Notes and References
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Emissions
|Medium
|
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
*Incorporates new met field TSOIL1
 
|-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]
* More Cloud-J PRs in progress
 
|-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"
|ALK4 & R4N2 chemistry
|Jared Brewer (UMN)
|Chemistry
|TBD
|Delivered
|
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]


=== 13.0.0 ===
|-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]


<span style="color:darkorange">'''This version is now under development. See the [[GEOS-Chem 13.0.0]] page for more details.'''''</span>
|-valign="top"
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
|Lizzie Lundgren (Harvard)
|GC-Classic
|Medium
|
|
*[https://github.com/geoschem/HEMCO/issues/18 HEMCO issue #18]


== Priorities not yet assigned to a particular version ==
|}


The following items have been identified as priorities for GEOS-Chem, but have not yet been assigned to a particular GEOS-Chem version.
== Ready to go in ==


=== 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  
{| border=1 cellspacing=0 cellpadding=5  
|-bgcolor="#CCCCCC"
|-bgcolor="#CCCCCC"
!width="500px"|Feature
!width="200px"|Feature
!width="200px"|Submitted by
!width="200px"|Contributor(s)
!width="100px"|Type
!width="100px"|Model scope
!width="300px"|Notes
!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 and Andreas Zuend (McGill)
|Aerosols
|Not delivered
|
 
|-valign="top"
|Extend aerosol settling
|Eloise Marais (UCL)
|Aerosols
|Not delivered
|
 
|-valign="top"
|Comment back in Ca, Mg, and K cations in aerosol thermo (HETP)
|Becky Alexander (UW)
|Aerosols
|Not delivered
|
 
|-valign="top"
|Seasalt aerosol from sea ice leads (2002-2011)
|Hannah (UIUC)
|Aerosols
|Not delivered
|
 
|-valign="top"
|P/L species should not contribute to the error norm
|Obin Sturm (PSC)
|Chemistry
|Not delivered
|
 
|-valign="top"
|Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6
|Katherine Travis (NASA LARC)
|Chemistry
|Not delivered
|
 
|-valign="top"
|Monoterpene oxdation more species & oxdiation products
|Kevin Bates (CU Boulder)
|Chemistry
|Not delivered
|
 
|-valign="top"
|PPN photolysis
|Eloise Marais (University College London)
|Chemistry
|Not delivered
|
 
|-valign="top"
|global orgainc N dep from various emissions; nitrate aromatics updates
|Tzung-May Fu (SUSTech)
|Chemistry +<br>Deposition
|Not delivered
|
 
|-valign="top"
|adaptive chemistry (domain-specific) in WRF-GC
|Tzung-May Fu (SUSTech)
|Chemistry
|Not delivered
|
 
|-valign="top"
|Alk4 from biogenic vs anthro
|Jared Brewer (UMN)
|Chemistry
|Not delivered
|
 
|-valign="top"
|Dry deposition to F90 (readability)
|Chris Holmes (FSU)
|Dry Deposition
|Not delivered
|


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2879/2020/ Improved wet scavenging from Luo et al. (2020)]
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
|Joey Lam, Amos Tai (CUHK)
|Science
|Dry deposition
|Not delivered
|
|


|-valign="top"
|-valign="top"
|Implement H2 chemistry in UCX
|FRP-based fire emissions for eastern US at 0.2
|Chris Holmes (FSU)
|Chris Holmes (FSU)
|Science
|Emissions
|Not delivered
|
 
|-valign="top"
|China agriculture NH3 emissions
|Amos Tai (CUHK)
|Emissions
|Not delivered
|
 
|-valign="top"
|T-dependent anthropogenic VOCs
|May Fu (SUSTech)
|Emissions
|Not delivered
|
 
|-valign="top"
|Rasterized shapefiles high-resolution for oil and gas infrastructure in North America
|Lee Murray (Rochester)
|Emissions
|Not delivered
|
|


|-valign="top"
|-valign="top"
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
|New soil NOx parameterization
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
|Yi Wang (U. Iowa), Jun Wang (U. Iowa)
|Science
|Emissions
|Not delivered
|
|
*Delivered to GCST (Jun 2020)


|-valign="top"
|-valign="top"
|[http://acmg.seas.harvard.edu/publications/2020/moch_HMS_submitted_2020.pdf HMS chemistry]
|New source functions for transport tracers beryllium-7 and beryllium-10
|Jonathan Moch (Harvard)
|Minjie Zheng (ETH)
|Science
|Emissions
|Not delivered
|
|
*Delivered to GCST (Sep 2020)
*See [https://github.com/geoschem/geos-chem/pull/456 geoschem/geos-chem PR #456]


|-valign="top"
|-valign="top"
|[https://www.sciencedirect.com/science/article/abs/pii/S1352231019305138?via%3Dihub Trace metal simulation]
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Junwei Xu (Dalhousie)
|Yang Li (Baylor University), Loretta Mickley (Harvard)
|Science
|Emissions
|Not delivered
|
|
*Delivered to GCST (Nov 2020)
*See [https://github.com/geoschem/geos-chem/pull/511 geoschem/geos-chem PR #511]


|-
|-valign="top"
|[https://acp.copernicus.org/articles/17/3699/2017/ Blowing snow emissions of sea salt and bromine]
|Australian emissions
|Lyatt Jaegle (UW)
|Stephen MacFarlane/Jenny Fisher (UWollongong)
|Science
|Emissions
|Not delivered
|
|
*Delivered to GCST (Jun 2020)
*See [https://github.com/geoschem/geos-chem/pull/356 geoschem/geos-chem PR #356]


|-valign="top"
|-valign="top"
|Offline CLM Harmonization
|Geogenic emissions (volcanic, rock weathering)
|Anthony Wong (BU)<br>Jeff Geddes (BU)
|Eric Roy (MIT)
|Science
|Emissions
|Not delivered
|
|


|-valign="top"
|-valign="top"
|[http://globalchange.bnu.edu.cn/research/laiv6 Updated Yuan/BNU MODIS LAI product (2000-2019)]
|Biomass burning - FINN2.5 & GFED4
|Jenny Fisher (U. Wollongong)
|Eric Roy (MIT)
|Science
|Emissions
|Not delivered
|
|
*Processing scripts delivered to GCST (Aug 2020)


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
|BCC-GC online
|Sam Silva (MIT)
|Lin Zhang (PKU)
|Science
|External Model
|Not delivered
|
 
|-valign="top"
|GC-YIBS with online fire emissions
|Xu Yue; Hong Liao; Xu Yue (NUIST)
|External Model
|Not delivered
|
 
|-valign="top"
|GISS-GC offline (GCAP)
|Lee Murray (Rochester)
|GCAP
|Not delivered
|
 
|-valign="top"
|Archived TCR-2 OH fields for carbon simulations
|Kazu Miyazaki (JPL)
|Input data
|Not delivered
|
|
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR


|-valign="top"
|-valign="top"
|[https://acp.copernicus.org/articles/17/3699/2017/ GC-YIBs biosphere-atmospheric chemistry coupled model]
|GOOPy (General Observation Operator in Python): for processing satellite and model output to produce column fields using averaging kernels
|Xu Yue (NUIST)
|Hannah Nesser (JPL) , Elise Penn (Harvard)
|Science
|Tools
|Not delivered
|
|
*See [https://github.com/geoschem/geos-chem/pull/356 geoschem/geos-chem #356]
* Could be added into GCPy as a Git submodule


|}
|}


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


{| border=1 cellspacing=0 cellpadding=5
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"
|- bgcolor="#cccccc"
!width="500px"|Item
!width="200px"|Feature
!width="200px"|Author(s)
!width="200px"|Contributor(s)
!width="100px"|Type
!width="100px"|Model scope
!width="300px"|Notes
!width="420px"|Notes and References
 
 
|-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, Eloise Marais (UCL)
|Aerosols
|
 
|-valign="top"
|DMS chemistry in v14
|Linia Tashmim and Will Porter (UC Riverside)
|Chemistry
|
 
|-valign="top"
|KPP standalone + 3D Interface
|Obin Sturm (PSC)
|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/Jenny Fisher (University of Wollongong)
|Chemistry
|
 
|-valign="top"
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Laura Yang (Harvard)
|Chemistry
|
 
|-valign="top"
|Implement isotope simulation for CH4 in the carbon simulation
|Lee Murray (Rochester)
|Chemistry
|
 
|-valign="top"
|Active mesospheric chemistry
|Helena McDonald (MIT), Seb Eastham (IC)
|Chemistry
|


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/HEMCO/issues/46 Distribute emissions vertically in the boundary layer]
|Documentation for adding additional aerosol species
|Barron Henderson (EPA)<br>GCST
|Connor Barker (UCL)
|Structural &<br>Science
|Documentation
|
|


|-valign="top"
|-valign="top"
|Provide climatologies for lightning NOx, volcano, and open fire emissions
|Column diagnostics
|Lizzie Lundgren (Harvard), Viral Shah (GMAO)
|Diagnostics
|
 
|-valign="top"
|TOMAS rate diagnostics -- improve performance
|Betty Croft (WashU/Dal)
|Diagnostics +<br>Performance
|
 
|-valign="top"
|Fix obspack - not working in 14.4.0
|Bob Yantosca (Harvard)
|Diagnostics
|
 
|-valign="top"
|Archive gamma values from heterogeneous chemistry
|Bob Yantosca (Harvard)
|Diagnostics
|
 
|-valign="top"
|RRTMG Documentation
|GCST
|GCST
|Science
|Documentation
|
 
|-valign="top"
|Canopy Physics Model
|Sam Silva (MIT)
|Dry Deposition
|
 
|-valign="top"
|Dry deposition diagnostics by land cover
|Holly Nowell, Chris Holmes (FSU)
|Dry Deposition
|
 
|-valign="top"
|Dry deposition process diagnostics
|Holly Nowell, Chris Holmes (FSU)
|Dry Deposition
|
|


|-valign="top"
|-valign="top"
|C2H4 and C2H2 chemistry
|Biomass burning for TOMAS
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
|Nicole June (CSU)
|Science
|Emissions +<br>Microphysics
|''Updated Sep 2020''
|


|-valign="top"
|-valign="top"
|Diagnostic to archive XCO2, XCO, and XCH4
|Historic biomass burning ()
|Dylan Jones (Toronto)
|Pengfei (Gtech)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
|Rice methane
|Kazu Miyazaki (JPL)
|Zichong Cheng (Harvard)
|Science
|Emissions
|
 
|-valign="top"
|Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.)
|Katie Travis / Kelvin Bates
|Emissions
|
 
|-valign="top"
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Melissa Sulprizio (Harvard), Tia Scarpelli (Carbon MAPPER)
|Emissions
|
 
|-valign="top"
|New prior biospheric fluxes from CMS-FLUX and GMAO
|Kevin Bowman (JPL), Lesley Ott (GMAO)
|Emissions
|
 
|-valign="top"
|Snowpack Br2 emission
|Chris Holmes (FSU)
|Emissions
|
 
|-valign="top"
|EDGAR v8.1_toxHg emissions for 1970-2022
|Eric Roy (MIT)
|Emissions
|
|


|-valign="top"
|-valign="top"
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
|Improve pressure handling in GCHP advection
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
|Science
|GCHP
|
|


|-valign="top"
|-valign="top"
|BrC aging
|Add error trap for duplicate scale factors in HEMCO
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
|Bob Yantosca (Harvard)
|Science
|HEMCO
|
|


|-valign="top"
|-valign="top"
|Update of US emissions to NEI16
|Fix pressure handling in HEMCO standalone
|Barron Henderson (EPA)
|Melissa Sulprizio (Harvard)
|Science
|HEMCO
|
|


|-valign="top"
|-valign="top"
|One-Way Coupling w/ GISS ModelE3
|Integration testing: Add stretched grid
|Lee Murray (Rochester)
|Lizzie Lundgren (Harvard)
|Structural
|Quality Assurance
|''Updated Aug 2020''
|
*Work is finished and a manuscript is in preparation


|-valign="top"
|-valign="top"
|Shared Socioeconomic Pathways Emission Inventories
|Integration testing: Add GCAP2
|Hong Liao (NUIST)
|GCST
|Science
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Integration testing: Add GCHP mass flux run
|Amos Tai (CUHK)
|Lizzie Lundgren (Harvard)
|Science
|Quality Assurance
|''Updated Aug 2020''
|


|-valign="top"
|Integration testing: Add run with all diagnostics turned on
|GCST
|Quality Assurance
|


|-valign="top"
|-valign="top"
|Rediagnosis of RAS convection in GEOS-Chem
|Integration testing: Reinstate TOMAS40
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
|Betty Croft (Dalhousie/WashU)
|Science
|Quality Assurance
|''Updated Aug 2020''
|
*Work is finished and a manuscript is in preparation.


|-valign="top"
|-valign="top"
|Read-in of native GEOS output in GCHP
|Strat-adjusted RF in GCC and GCHP
|WUStL GCST
|Connor Barker, Eloise Marais (UCL)
|Science
|Radiation
|''Added Sep 2020''
|


|-valign="top"
|-valign="top"
|Adoption of the Spack package manager for dependency management
|Continue cleanup of C-preprocessor switches
|Harvard GCST
|Lizzie Lundgren (Harvard)
|Structural
|Structural
|''Added Sep 2020''
|
 
|-valign="top"
|updates to Luo deposition scheme
|Gan Luo
|Wet Deposition
|
 
|-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), Fangqun Yu (Albany)
|Wet Deposition
|


|}
|}


=== 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="500px"|Item
!width="200px"|Feature
!width="200px"|Author(s)
!width="200px"|Contributor(s)
!width="100px"|Type
!width="100px"|Model scope
!width="300px"|Notes
!width="420px"|Notes and References
 
|-valign="top"
|ML algorithms for bulk aerosol
|Arshad Nair and Fangqun Yu (SUNY Albany)
|Aerosols
|
 
 
|-valign="top"
|Heterogeneous sulfate chemistry
|Katie Travis
|Chemistry
|
 
|-valign="top"
|H2 as an active species
|Seb Eastham (IC)
|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), Pam Wales (GSFC)
|Emissions
|
 
|-valign="top"
|Drought-stress algorithm
|Wei Li (U. 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 (Montreal)
|Emissions
|
 
|-valign="top"
|Furan emission factors (updates existing emissions)
|Lu Hu/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); Killian Murphy (York); 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/Jenny Fisher (University of Wollongong)
|Chemistry
|
 
|-valign="top"
|DMS updates
|Will Porter (UCR)
|Chemistry
|


|-valign="top"
|Furans emission and chemistry
|Lixu Jin/Lu Hu(U Montana)
|Chemistry + <br>Emissions
|


|-valign="top"
|-valign="top"
|Aromatic VOC chemistry
|Cl2 prodcution from Fe aerosol Qianjie Chen
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
|(Hong Kong Poly)/Becky Alexander (UW)
|Science
|Chemistry
|''Updated Sep 2020''
|


|-valign="top"
|-valign="top"
|Update OCS simulation in the standard code
|VCP, cooking: tracers species added i.e., D5, ethanol affecting PAN
|Kevin Bowman (JPL)
|Kevin Bates (CU Boulder)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Methylethylketone chemistry
|bidirectional land-atmosphere exchange for Hg
|Jared Brewer (CSU)
|Yuying Cui (MIT/Tsinghua)
|Science
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Add sulfate dependence to SOA yield from isoprene in simple SOA
|OH covariances for inversions
|Eloise Marais (Leicester)
|Elise Penn (Harvard)
|Science
|Inversions
|
|


|-valign="top"
|-valign="top"
|Updated Hg chemistry:
|CESM2-GC offline
*Streamlining of Hg simulation through HEMCO and KPP
|Seb Eastham (ICL); Lee Murray (Rochester)
*Hg gas-phase photo-reduction
|Met fields
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)
|
|Science
|''Updated July 2020''


|-valign="top"
|-valign="top"
|GTMM updates
|Re-binning of off-line sea salt and dust for TOMAS
|Ben Geyman (Harvard)
|Betty Croft (Dalhousie)
|Science
|Microphysics
|''Updated Aug 2020''
|


|-valign="top"
|-valign="top"
|Canopy Physics Model
|TOMAS nucleation updates
|Sam Silva (MIT)
|Sam O'Donnell (CSU)
|Microphysics
|
 
|-valign="top"
|Stratospheric aerosol APM
|Fangqun Yu (SUNY Albany)
|Microphysics
|
 
|-valign="top"
|Transition from MERRA-2 to GEOS-IT for benchmarking
|Yuanjian Zhang (WashU)
|Quality Assurance
|
 
|-valign="top"
|Automate integration testing on AWS
|Yidan Tang (WashU)
|Quality Assurance
|
 
|-valign="top"
|Integration testing: Add across end of year run
|GCST
|Quality Assurance
|
 
|-valign="top"
|Integration testing: Add GEOS-IT
|Yuanjian Zhang (WashU)
|Quality Assurance
|
 
|-valign="top"
|Separate mixing, emissions, and drydep
|Yuanjian Zhang (WashU)
|Structural
|
 
|-valign="top"
|Intel IFX compiler
|Bob Yantosca (Harvard)
|Structural
|Structural
|
|


|-valign="top"
|-valign="top"
|Landcover/Fire Emissions Offline LPJlmfire
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
|Loretta Mickley (Harvard)
|Bob Yantosca (Harvard); Lee Murray (Rochester)
|Science
|Structural
|
|


|-valign="top"
|-valign="top"
|Integrating GMAO's tracer gridded component in GCHP
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
|Sebastian Eastham (MIT)
|Lizzie Lundgren (Harvard)
|Structural
|Structural
|''Added Sep 2020''
|


|-valign="top"
|-valign="top"
|Mass flux-based transport in GCHP
|Limit allocation of State_Met to what is needed per simulation
|Sebastian Eastham (MIT)
|Melissa Sulprizio (Harvard)
|Science
|Structural
|''Added Sep 2020''
|


|}
|}


=== 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="500px"|Item
!width="200px"|Feature
!width="200px"|Author(s)
!width="200px"|Contributor(s)
!width="100px"|Type
!width="100px"|Model scope
!width="300px"|Notes
!width="420px"|Notes and References
 
|-valign="top"
|Modal aerosol model (MAM7) in GCHP
|Shreya Sharma (MIT)
|Aerosols
|
 
|-valign="top"
|Online OCIM ocean biogeochemistry
|Lee Murray (Rochester); Hannah Horowitz (UIUC); Chris Holmes (FSU)
|Chemistry
|
 
|-valign="top"
|Perchlorate chemistry
|Yuk Chun Chan (UW)
|Chemistry
|
 
|-valign="top"
|Non-stomatal dry deposition (2-layer canopy model)
|Michael Vermeuel (Purdue)
|Dry Deposition
|
 
|-valign="top"
|Continental chloride particle emissions (salty dust, road salt)
|Jessica Haskins (Utah)
|Emissions
|
 
|-valign="top"
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
|Ruochong (Tshingua)
|Emissions
|


|-valign="top"
|-valign="top"
|GCHP Adjoint
|Lightning NOx production rates
|Daven Henze (CU Boulder)
|Bex Horner (UCL)
|Science
|Emissions
|''Added Sep 2020''
|


|-valign="top"
|-valign="top"
|Implement isotope simulation for CO and CH4 in GCHP
|HFO and CF3CHO
|Lee Murray (Rochester)
|Beth Killen/Jenny Fisher (University of Wollongong)
|Science
|Chemistry
|
 
|-valign="top"
|Glyoxal updates from isoprene
|Tzung-May Fu (SUSTech)
|Chemistry
|
 
|-valign="top"
|Iodine chemistry
|Becky Alexander (UW)/Xuan Wang (cityU HK)
|Chemistry
|
 
|-valign="top"
|Chlorine/Perchlorate
|Yukchun Chan (UW)
|Chemistry
|
 
|-valign="top"
|Playa dust chemistry to improve Cl over land
|Jessica Haskins (Utah)
|Chemistry
|
 
|-valign="top"
|GFED5 biomass burning
|Eric Roy (MIT)
|Emissions
|
 
|-valign="top"
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Hg simulation
|
 
|-valign="top"
|Soil Hg emissions 2010-2020
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Hg simulation
|
 
|-valign="top"
|Air-sea exchange parameterization
|Eric Roy (MIT)
|Hg simulation
|
 
|-valign="top"
|Soil Hg emissions parameterization
|Ari Feinberg (IQF-CSIC)
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Migrate LETFK DA scheme to GCHP
|Sea salt uptake of GOM
|Kazu Miyazaki (JPL)
|Eric Roy (MIT)
|Science
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Super fast chemistry scheme
|Photoreduction rate constant
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
|Eric Roy (MIT)
|Science
|Hg simulation
|''Updated Sep 2020:''
|
*SF mechanism has been implemented and benchmarked in GEOS-Chem 12.0.0. This mechanism is of interest for those groups wanting fast global simulation of oxidation fields in GEOS-Chem simulations focused on aerosol microphysics.
*The machine-learned chemical solver is still probably 12 months away from online implementation into GEOS-Chem.


|-valign="top"
|-valign="top"
|Add non-volatile cations to ISORROPIA
|new observations (2010-2020) in standardized Hg benchmark for intercomparison
|Becky Alexander (UW)
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Science
|Hg simulation
|''Updated Aug 2020''
|


|-valign="top"
|-valign="top"
|DMS oxidation scheme updating
|Hg simulation in GCHP
|Becky Alexander (UW)<br>Qianjie Chen (UW)
|Eric Roy (MIT)
|Science
|Hg simulation
|''Updated Aug 2020''
|
*Delayed - implemented pre-KPP
*Currently bring implemented in KPP by UC Riverside group


|-valign="top"
|-valign="top"
|Heterogeneous sulfate production
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
|Hannah Horowitz (UIUC)
|Science
|Hg simulation
|''Updated Aug 2020''
|
*Delayed - implemented pre-KPP


|-valign="top"
|-valign="top"
|Streamlining of specialty simulations through HEMCO and KPP
|possibly updating Hg oxidation chemistry based on Utah field campaigns
|GCST<br>Chris Holmes (FSU)<br>Peter Ivatt (York) for PAH<br>Beata Bukosa (Wollongong) for joint CO-CO2-CH4
|Jessica Haskins (Utah)
|Science
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Hg in WRF-GC
|New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online
|Yanxu Zhang (Nanjing)
|Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC)
|Science
|Input data
|''Updated Aug 2020''
|


|-valign="top"
|-valign="top"
|Hg with blowing snow
|Extend IMI to CO2 (ICI)
|Yanxu Xhang (Nanjing)
|Hannah Nesser (JPL)  
|Science
|Inversions
|''Updated Aug 2020''
|


|-valign="top"
|-valign="top"
|Hg isotopes
|Global emission inventory of metals
|Xiaotian Xu, Yanxu Xhang (Nanjing)
|Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U)
|Science
|Metals simulation
|''Added Aug 2020''
|


|-valign="top"
|-valign="top"
|Hg in CESM CAM-CHEM
|Investigate and improve performance of aerosol chemistry
|Peng Zhang, Yanxu Xhang (Nanjing)
|Bob Yantosca (Harvard)
|Science
|Performance
|''Added Aug 2020''
|
 
|-valign="top"
|PAH - update from version 11
|Lexia Cicone (MIT)
|POPs simulation
|


|-valign="top"
|-valign="top"
|Complex / multicomplex variables
|Species database more accessible; doc updates; TOL discussion
|Shannon Capps (Drexel)
|Jessica Haskins (Utah)
|Structural
|Structural
|
|


|-valign="top"
|-valign="top"
|Archived CMIP6 Met Products for GEOS-Chem Input
|Stretched-grid plotting in GCPy
|Lee Murray (Rochester)
|Killian Murphy (York)
|Science
|Tools
|
|


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


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


'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
|}

Revision as of 14:19, 25 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
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions 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
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry TBD Delivered
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 and 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 (UIUC) Aerosols Not delivered
P/L species should not contribute to the error norm Obin Sturm (PSC) Chemistry Not delivered
Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6 Katherine Travis (NASA LARC) Chemistry Not delivered
Monoterpene oxdation more species & oxdiation products Kevin Bates (CU Boulder) Chemistry Not delivered
PPN photolysis Eloise Marais (University College London) Chemistry Not delivered
global orgainc N dep from various emissions; nitrate aromatics updates Tzung-May Fu (SUSTech) Chemistry +
Deposition 		Not delivered
adaptive chemistry (domain-specific) in WRF-GC Tzung-May Fu (SUSTech) Chemistry Not delivered
Alk4 from biogenic vs anthro Jared Brewer (UMN) Chemistry Not delivered
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry Deposition Not delivered
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam, Amos Tai (CUHK) Dry deposition Not delivered
FRP-based fire emissions for eastern US at 0.2 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
Rasterized shapefiles high-resolution for oil and gas infrastructure in North America Lee Murray (Rochester) Emissions Not delivered
New soil NOx parameterization Yi Wang (U. Iowa), Jun Wang (U. Iowa) Emissions Not delivered
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 University), Loretta Mickley (Harvard) Emissions Not delivered
Australian emissions Stephen MacFarlane/Jenny Fisher (UWollongong) Emissions Not delivered
Geogenic emissions (volcanic, rock weathering) Eric Roy (MIT) Emissions Not delivered
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; Hong Liao; Xu Yue (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
GOOPy (General Observation Operator in Python): for processing satellite and model output to produce column fields using averaging kernels Hannah Nesser (JPL) , Elise Penn (Harvard) Tools Not delivered
  • Could be added into GCPy as a Git submodule

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, Eloise Marais (UCL) Aerosols
DMS chemistry in v14 Linia Tashmim and Will Porter (UC Riverside) Chemistry
KPP standalone + 3D Interface Obin Sturm (PSC) 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/Jenny Fisher (University of 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
Active mesospheric chemistry Helena McDonald (MIT), Seb Eastham (IC) 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
Fix obspack - not working in 14.4.0 Bob Yantosca (Harvard) Diagnostics
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, Chris Holmes (FSU) Dry Deposition
Dry deposition process diagnostics Holly Nowell, Chris Holmes (FSU) Dry Deposition
Biomass burning for TOMAS Nicole June (CSU) Emissions +
Microphysics
Historic biomass burning () Pengfei (Gtech) Emissions
Rice methane Zichong Cheng (Harvard) Emissions
Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.) Katie Travis / Kelvin Bates Emissions
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Melissa Sulprizio (Harvard), Tia Scarpelli (Carbon MAPPER) Emissions
New prior biospheric fluxes from CMS-FLUX and GMAO Kevin Bowman (JPL), Lesley Ott (GMAO) Emissions
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
Fix pressure handling in HEMCO standalone Melissa Sulprizio (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, Eloise Marais (UCL) Radiation
Continue cleanup of C-preprocessor switches Lizzie Lundgren (Harvard) Structural
updates to Luo deposition scheme Gan Luo Wet Deposition
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 and Fangqun Yu (SUNY Albany) Aerosols


Heterogeneous sulfate chemistry Katie Travis Chemistry
H2 as an active species Seb Eastham (IC) 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 (GSFC) Emissions
Drought-stress algorithm Wei Li (U. 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 (Montreal) Emissions
Furan emission factors (updates existing emissions) Lu Hu/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/Jenny Fisher (University of Wollongong) Chemistry
DMS updates Will Porter (UCR) Chemistry
Furans emission and chemistry Lixu Jin/Lu Hu(U Montana) Chemistry +
Emissions
Cl2 prodcution from Fe aerosol Qianjie Chen (Hong Kong 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/Jenny Fisher (University of Wollongong) Chemistry
Glyoxal updates from isoprene Tzung-May Fu (SUSTech) Chemistry
Iodine chemistry Becky Alexander (UW)/Xuan Wang (cityU HK) 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
Retrieved from "https://wiki.seas.harvard.edu/geos-chem/index.php?title=GEOS-Chem_model_development_priorities&oldid=53829"