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


=== 12.8.0 ===
|-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


<span style="color:darkorange">'''This version is currently in development. See [[GEOS-Chem_12#12.8.0|the ''GEOS-Chem 12'' wiki page]] for details.'''</span>
|}


=== 12.9.0 ===
== Prioritized and in the queue ==


This version will require 1-month and 1-year full-chemistry benchmarks.
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.


{| 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="100px"|Ease of implementation
!width="100px"|Delivery status
!width="300px"|Notes and References
!width="300px"|Notes and References


|-valign="top"
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Features affecting the full-chemistry simulation
|ALK4 & R4N2 chemistry
|Jared Brewer (UMN)
|Chemistry
|TBD
|Not 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.]


|-valign="top"
|-valign="top"
|[https://www.atmos-chem-phys.net/19/3981/2019/ Updated halogen chemistry]
|Mass flux regridding fix in MAPL
|Xuan Wang (Harvard)<br>Tomas Sherwen (York)<br>Shuting Zhai (UW)
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
|Science
|GCHP input regridding
|Medium
|
|
|
*Delivered to GCST (Sep 2019)
*[https://github.com/geoschem/GCHP/issues/377 GCHP Issue #377]
*Originally implemented in v11-02e and updated to 12.5.0 by Will Downs (GCST)
*'''Currently on hold, as the submitted update results in zero diff'''


|-valign="top"
|-valign="top"
|Fix incorrect rates in stratosphere for HOBr + SO3/HSO3
|New version of CEDS at 0.1 deg
|Seb Eastham (MIT)
|Dandan Zhang (WashU)
|Science
|Emissions
|Simple
|Delivered
|
|
*[https://github.com/geoschem/geos-chem/issues/138 geoschem/geos-chem #138]
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
*'''Currently on hold while an issue with seasonality in the new CEDS data is being investigated by the authors.'''


|-valign="top"
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Features NOT affecting the full-chemistry simulation
|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]


|-valign="top"
|-valign="top"
|Reduction of memory for HISTORY diagnostics with a species dimension
|Capture all trop and PBL height changes in budget diagnostics
|Bob Yantosca ([[GCST]])
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Structural
|Diagnostics
|Medium
|Delivered
|
|
*[https://github.com/geoschem/geos-chem/issues/270 geoschem/geos-chem #270]
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]


|}
|}


=== 13.0.0 ===
== 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 References
 
|-valign="top"
|KORUS-AQ emissions for East Asia (as an option)
|Katie Travis (NASA)
|Emissions
|Simple
|
 
|-valign="top"
|Geologic emission of ethane and propane
|Matthew Rowlinson and Mat Evans(York)
|Emissions
|Delivered<br>Jan 2023
|
*Global source from https://doi.org/10.1038/s41561-018-0073-0 with spatial distribution from https://doi.org/10.5194/essd-11-1-2019
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
|Science
|Delivered<br>Feb 2021
|
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
 
|-valign="top"
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
|Emissions
|Delivered<br>Jul 2021
|
*Data involves many files- need to think about temporal frequency


|-valign="top"
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Updates that will NOT affect full-chemistry simulations
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
|Chemistry
|Delivered<br>June 2023
|
*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
*Implemented in v12.5, needs to be brought up to current version


|-valign="top"
|-valign="top"
|Retire the GNU Make build system in both GEOS-Chem Classic and GCHP and replace with CMake
|DMS Chemistry
|Liam Bindle (WashU)
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
|Structural
|Chemistry
|Not delivered
|
 
|-valign="top"
|Organic acids (RCOOH)
|Katie Travis (NASA)
|Chemistry
|Not delivered
|
|


|-valign="top"
|-valign="top"
|Retire the GEOS-Chem Unit Tester repository and move GEOS-Chem run directory creation to the GEOS-Chem source code repository
|Improve carbon & nitrogen conservation in reactions
|Melissa Sulprizio (GCST)
|Kelvin Bates (Harvard)
|Structural
|Chemistry
|Not delivered
|
|


|-valign="top"
|-valign="top"
|Make HEMCO a Git submodule in GEOS-Chem
|Blowing snow sea salt in TOMAS
|[[GCST]]
|Betty Croft (Dalhousie)
|Structural
|Aerosols
|Not delivered
|
|


|-valign="top"
|-valign="top"
|Dynamic diagnostic array size allocation based on settings in HISTORY.rc
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
|Bob Yantosca (GCST)
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
|Structural
|Hg simulation
|Not delivered
|
|


|-
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Features only affecting GCHP:
|WRF-GC Hg simulation
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
|Hg simulation<br>WRF-GC
|Not delivered
|


|-valign="top"
|-valign="top"
|Retire the existing GCHP repository and replace with a new wrapper repository that uses ESMF as an external library and integrates GEOS-Chem and NASA/GMAO GEOS-ESM git repositories as git submodules
|Updated HgII gas-partical partitioning
|Lizzie Lundgren (GCST)
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
|Structural
|Hg simulation
|Not delivered
|
|
*Should be option, not default


|-valign="top"
|-valign="top"
|Separate HEMCO from GEOS-Chem to use as an ESMF gridded component in GCHP
|Dry deposition to F90 (readability)
|Lizzie Lundgren (GCST)
|Chris Holmes (FSU)
|Structural
|Dry deposition
|Not delivered
|
|


|}
|}


== Priorities not yet assigned to a particular version ==
== Almost there (< 6 months) ==


The following items have been identified as priorities for GEOS-Chem, but have not yet been assigned to a particular GEOS-Chem version.
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.


=== Ready to go in ===
{|border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
!width="200px"|Feature
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="420px"|Notes and References


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|-bgcolor="#CCCCCC"
|PPN+hv, PPN+OH
!width="500px"|Feature
|Robert Ryan (UCL)
!width="200px"|Submitted by
|Chemistry
!width="100px"|Type
|
!width="300px"|Notes


|-
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
|MBO
|Michael Vermeuel (UMN)
|Chemistry
|


|-valign="top"
|-valign="top"
|Improved wet scavenging (Luo et al., 2020)
|Initial conditions for CH4 correcting background and stratospheric biases
|Gan Luo (Albany)<br>Fanqun Yu (Albany)
|Todd Mooring (Harvard)
|Science
|Methane simulation
|
|


|-valign="top"
|-valign="top"
|Implement H2 chemistry in UCX
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|Chris Holmes (FSU)
|Bob Yantosca (Harvard)
|Science
|Aerosols<br>Structural
|
|
*Ongoing


|-valign="top"
|-valign="top"
|Joint CO, CO2, CH4 simulation
|Re-binning of off-line sea salt and dust for use in TOMAS
|Beata Bukosa (Wollongong)
|Betty Croft (Dalhousie)
|Science
|Aerosols
|
|
*Delivered to GCST (Jun 2019)


|-
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Emissions and surface fluxes updates
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
|Betty Croft (Dalhousie)
|Aerosols
|


|-valign="top"
|-valign="top"
|ODIAC fossil fuel emissions for CO2 simulations
|ML algorithms for bulk aerosols
|Jenny Fisher (UOW)<br>Yi Cao (UOW)
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
|Science
|Aerosols
|
|
*Delivered to GCST (Jan 2020)


|-valign="top
|-valign="top"
|Updated Streets Hg emissions
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
|Colin Thackray (Harvard)
|Shixian Zhai (Harvard)
|Science
|Aerosols
|
|


|-valign="top
|-valign="top"
|Updated EDGAR 4.3 Hg emissions
|Updates to Hodzic SOA scheme
|Amanda Giang (UBC)
|Jared Brewer (Harvard)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Offline CLM Harmonization
|Automated reduction in isoprene scheme
|Anthony Wong (BU)<br>Jeff Geddes (BU)
|Dan Westervelt (Lamont-Doherty)
|Science
|Aerosols
|
|


|-
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
|Brown carbon chemsitry
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
|Aerosols
|


|-valign="top"
|-valign="top"
|Arctic marine SOA
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
|Betty Croft (Dalhousie)
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
|Science
|Convection
|
|
*Details on wiki only, not in standard code


|}
|-valign="top"
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
|Jintai Lin (PKU)
|Emissions
|
*Horizontal resolution: 5km, temporal resolution: JJA mean
*monthly data will be available at a later stage; please contact us


--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:38, 14 May 2019 (UTC)
|-valign="top"
|Updated biomass burning emission factors and species
|Tess Carter (MIT)
|Emissions
|


=== Almost there (< 6 months) ===
|-valign="top"
|Updated offline sea salt emissions
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
|Emissions
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
!width="500px"|Item
|Sam Silva (MIT)
!width="200px"|Author(s)
|Emissions &<br>Science
!width="100px"|Type
|
!width="300px"|Notes
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
*Needs to be updated to a more recent GEOS-Chem version


|-valign="top"
|-valign="top"
|[https://www.geosci-model-dev.net/12/111/2019/gmd-12-111-2019.pdf Aromatic VOC chemistry]
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
|Bob Yantosca (Harvard)
|Science
|Model performance
|
|
*Ongoing (will be done as time allows)


|-valign="top"
|-valign="top"
|C2H4 and C2H2 chemistry
|Assess memory leak in GCHP
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
|Killian Murphy (York)
|Science
|Model performance
|
|
*NOTE: Most memory leaks in GCHP have been fixed by [https://github.com/geoschem/geos-chem/pull/1353 geoschem/geos-chem PR #1353]. Will wait until MAPL3 to further assess.


|-valign="top"
|-valign="top"
|Diagnostic to archive XCO2, XCO, and XCH4
|Hybrid MPI-OpenMP in GCHP
|Dylan Jones (Toronto)
|Seb Eastham (MIT)<br>Killian Murphy (York)
|Science
|Model performance
|
|


|-valign="top"
|-valign="top"
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
|Improve pressure handling in GCHP advection
|Kazu Miyazaki (JPL)
|Seb Eastham (MIT)<br>Yuanjian Zhang (WashU)
|Science
|GCHP
|
|


|-valign="top"
|-valign="top"
|Evaluate the impact on the tropsophere of using the family approach for transport in the stratosphere
|Use ExtData2G as default GCHP input module
|Christoph Keller (NASA/GMAO)  
|Lizzie Lundgren (Harvard)
|Science
|GCHP
|Will replace ExtData.rc with yaml file
 
|}
 
== 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
|- bgcolor="#cccccc"
!width="200px"|Feature
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="420px"|Notes and References
 
|-valign="top"
|Snow / Icy Bromine
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
|Chemistry
|
|
*Important when [[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|extending UCX into the mesosphere]]


|-valign="top"
|-valign="top"
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
|Monoterpene oxidation scheme
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
|Jessica Haskins (MIT)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Examine differences in the lightning NOx schemes in GEOS-Chem and GMI
|Fire related VOCs including furans
|Christoph Keller (NASA/GMAO)<br>Lee Murray (Rochester)
|Lu Hu (UMT)<br>Lixu Jin (UMT)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|HMS chemistry
|Extension of UCX into the mesosphere
|Jonathan Moch (Harvard)
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Heterogeneous sulfate production
|Methane flux ingestion
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
|Eloise Marais (UCL)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|BrC aging
|Dust non-sphericity impacts on surface chem and optical properties
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
|Inderjeet Singh (WashU)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Retire carbon-based units for VOCs
|Size-resolved stratospheric aerosol
|GCST
|Seb Eastham (MIT)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Update of US emissions to NEI16
|Extend aerosol settling
|Barron Henderson (EPA)
|Eloise Marais (UCL)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Updated surface ocean dissolved Hg0 from MITgcm
|Stratospheric aerosol APM
|Yanxu Zhang (Nanjing)
|Fangqun Yu (SUNY)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|One-Way Coupling w/ GISS ModelE3
|Plume-in-grid model
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
|Hongwei Sun (Harvard)
|Structural
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Shared Socioeconomic Pathways Emission Inventories
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
|Hong Liao (NUIST)
|Lee Murray (Rochester)
|Science
|Emissions
|
|


|}
|-valign="top"
|Seb aircraft emissions beyond recent 2019 update
|Seb Eastham (MIT)
|Emissions
|


--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:38, 14 May 2019 (UTC)
|-valign="top"
|FRP-based fire emsisions for eastern US at 0.2 deg
|Charlie Fite (FSU)
|Emissions
|


=== Over the horizon (6-12 months) ===
|-valign="top"
|Hg iodine chemistry
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
|Hg simulation
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Hg simulation in GCHP
!width="500px"|Item
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
!width="200px"|Author(s)
|Hg simulation
!width="100px"|Type
|
!width="300px"|Notes


|-valign="top"
|-valign="top"
|Update OCS simulation in the standard code
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
|Kevin Bowman (JPL)
|Yanxu Zhang (Nanjing U.)
|Science
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Examine what are the differences in the PSC implementation in GEOS-Chem and GMI and assess the implications of these differences for startospheric ozone
|Dry deposition diagnostics by land cover
|Susan Strahan (Goddard)<br>Sebastian Eastham (MIT)
|Holly Nowell (FSU)
|Science
|Diagnostics
|
|


|-valign="top"
|-valign="top"
|Rediagnosis of RAS convection in GEOS-Chem
|Dry deposition process diagnostics
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
|Holly Nowell (FSU)
|Science
|Diagnostics
|
|


|-valign="top"
|-valign="top"
|New schedule for tracer transport benchmarks (FP change, scavenging change, or major release)
|Isotope simulation for CO and CH4 in GCHP
|Andrea Molod (NASA/GMAO)
|Lee Murray (Rochester)
|Science
|Carbon simulation
|
|


|-valign="top"
|-valign="top"
|Updated cloud water pH
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Viral Shah (Harvard)<br>Jonathan Moch (Harvard)
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
|Science
|Emissions<br>CH4 simulation
|
|


|-valign="top"
|-valign="top"
|Methylethylketone chemistry
|Modularization of aerosols code for interface with GOCART in GEOS
|Jared Brewer (CSU)
|Christoph Keller (GMAO)
|Science
|Structural
|
|


|-valign="top"
|-valign="top"
|Add sulfate dependence to SOA yield from isoprene in simple SOA
|Improve load balancing in GCHP
|Elo&iuml;se Marais (Leicester)
|Seb Eastham (MIT)
|Science
|Model performance
|
|


|-valign="top"
|-valign="top"
|Trace metal simulation
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
|Junwei Xu (Dalhousie)
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
|Science
|Transport
|
|


|-valign="top"
|-valign="top"
|Hg gas-phase photo-reduction
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Colin Thackray (Harvard)
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
|Science
|Transport
|
|


|-valign="top"
|-valign="top"
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
|Amos Tai (CUHK)
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
|Science
|Transport
|
|


|-valign="top"
|-valign="top"
|Canopy Physics Model
|MAPL version 3
|Sam Silva (MIT)
|Lizzie Lundgren (Harvard)
|Structural
|GCHP
|
|Will include History wildcard handling in GCHP
 


|-valign="top"
|-valign="top"
|Landcover/Fire Emissions Offline LPJlmfire
|Migrate benchmark meteorology from MERRA2 to GEOS-IT
|Loretta Mickley (Harvard)
|GCST
|Science
|Benchmarking
|
|


|}
|}


--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:38, 14 May 2019 (UTC)
== 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"
|-valign="top"
|Implement isotope simulation for CO and CH4 in GCHP
|Updates to Aromatic chemistry
|Lee Murray (Rochester)
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Migrate LETFK DA scheme to GCHP
|Nitrate photolysis
|Kazu Miyazaki (JPL)
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Super fast chemistry scheme
|In aerosol chemistry Halogens
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Add non-volatile cations to ISORROPIA
|Benchmark box model of GC Chemistry
|Becky Alexander (UW)
|Katie Travis (NASA)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Update Europe emissions to EMEP 2016
|Alkyl nitrates Alk7, PHAN
|Eloise Marais (Leicester)
|Katie Travis (NASA)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|MEGAN3
|Add stratospheric ozone species to full-chemistry simulations
|Sam Silva (MIT)<br>Jen Kaiser (GIT)<br>Yuxuan Wang (UH)
|Lee Murray (Rochester)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|DMS oxidation scheme updating
|Perchlorate chemistry
|Becky Alexander (UW)<br>Qianjie Chen (UW)
|Yuk Chun Chan (UWAB)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Streamlining of specialty simulations through HEMCO and KPP
|Explicit heterogeneous sulfate chemistry
|GCST<br>Chris Holmes (FSU)<br>Colin Thackray for POPs (Harvard)<br>Peter Ivatt (York) for PAH
|Katie Travis (NASA)<br>Becky Alexander (UT)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Hg in WRF-GC
|HOx and ozone "emissions" from lightning as option in model to play with
|Yanxu Zhang (Nanjing)
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Hg with blowing snow
|Sea salt aerosol from sea ice leads
|Yanxu Xhang (Nanjing)
|Hannah Horowitz (U. Illinois)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Updated treatment of Hg in ocean
|Drought-stress algorithm
|Chris Holmes (FSU)
|Wei Li (U. Houston)
|Science
|
|
|


|-valign="top"
|-valign="top"
|GTMM updates
|Biomass burning injection height profiles
|Ben Geyman (Harvard)
|Inderjeet Singh (WashU)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Complex / multicomplex variables
|OCIM integration
|Shannon Capps (Drexel)
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
|Structural
|
|
|


|-valign="top"
|-valign="top"
|Build KPP when you compile GC
|Updating landcover products in GEOS-Chem
|GCST
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
|Structural
|Input data
|
|


|-valign="top"
|-valign="top"
|Restructure source code folders
|Dry deposition physical improvement
|GCST
|Chris Holmes (FSU)
|Structural
|Dry deposition
|
|


|-valign="top"
|-valign="top"
|Archived CMIP6 Met Products for GEOS-Chem Input
|TOMAS WRF-GC in regional Thailand simulation
|Lee Murray (Rochester)
|Win Trivitayanurak (Chulalongkorn U)
|Science
|Aerosols
|
|


|}
|}
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:38, 14 May 2019 (UTC)
----------------
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''

Revision as of 17:46, 31 May 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

Prioritized and in the queue

Features listed in this table are prioritized for integration into GEOS-Chem in the near future.

Feature Contributor(s) Model scope Ease of implementation Delivery status Notes and References
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry TBD Not delivered
Mass flux regridding fix in MAPL Tom Clune (GMAO)
Seb Eastham (MIT) 		GCHP input regridding Medium
  • GCHP Issue #377
  • Currently on hold, as the submitted update results in zero diff
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple Delivered
  • geos-chem issue #1745
  • Currently on hold while an issue with seasonality in the new CEDS data is being investigated by the authors.
Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4 Lizzie Lundgren (Harvard) GC-Classic Medium
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics Medium 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 References
KORUS-AQ emissions for East Asia (as an option) Katie Travis (NASA) Emissions Simple
Geologic emission of ethane and propane Matthew Rowlinson and Mat Evans(York) Emissions Delivered
Jan 2023
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam(CUHK)
Amos Tai (CUHK) 		Science Delivered
Feb 2021
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor University)
Loretta Mickley (Harvard) 		Emissions Delivered
Jul 2021
  • Data involves many files- need to think about temporal frequency
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN) 		Chemistry Delivered
June 2023
DMS Chemistry Linia Tashmim (UC Riverside)
William Porter (UC Riverside) 		Chemistry Not delivered
Organic acids (RCOOH) Katie Travis (NASA) Chemistry Not delivered
Improve carbon & nitrogen conservation in reactions Kelvin Bates (Harvard) Chemistry Not delivered
Blowing snow sea salt in TOMAS Betty Croft (Dalhousie) Aerosols Not delivered
Australian anthropogenic Hg emissions Stephen MacFarlane (UOW)
Jenny Fisher (UOW)
Hannah Horowitz (U. Illinois)
Viral Shah (Harvard) 		Hg simulation Not delivered
WRF-GC Hg simulation Xiaotian Xu (Nanjing U.)
Yanxu Zhang (Nanjing U.) 		Hg simulation
WRF-GC 		Not delivered
Updated HgII gas-partical partitioning Kaiyun Liu (Tsinghua U.)
Qingru Wu (Tsinghua U.)
Shuxiao Wang (Tsinghua U.) 		Hg simulation Not delivered
  • Should be option, not default
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry deposition Not delivered

Almost there (< 6 months)

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

Feature Contributor(s) Model scope Notes and References
PPN+hv, PPN+OH Robert Ryan (UCL) Chemistry
MBO Michael Vermeuel (UMN) Chemistry
Initial conditions for CH4 correcting background and stratospheric biases Todd Mooring (Harvard) Methane simulation
Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism Bob Yantosca (Harvard) Aerosols
Structural
  • Ongoing
Re-binning of off-line sea salt and dust for use in TOMAS Betty Croft (Dalhousie) Aerosols
Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90 Betty Croft (Dalhousie) Aerosols
ML algorithms for bulk aerosols Arshad Nair (SUNY Albany)
Fangqun Yu (SUNY Albany) 		Aerosols
PM2.5 and PM10 calculations: aerodynamic vs geometric diameters Shixian Zhai (Harvard) Aerosols
Updates to Hodzic SOA scheme Jared Brewer (Harvard) Aerosols
Automated reduction in isoprene scheme Dan Westervelt (Lamont-Doherty) Aerosols
Brown carbon chemsitry Jingqiu Mao (U. Alaska)
Xuan Wang (CUHK) 		Aerosols
GEOS resolution and subgrid convection - Part 2 RAS parameter tuning Tailong He (Toronto)
Dylan Jones (Toronto)
Andrea Molod (NASA GMAO) 		Convection
High-res top-down TROPOMI-derived seasonal mean NOx emissions for China Jintai Lin (PKU) Emissions
  • Horizontal resolution: 5km, temporal resolution: JJA mean
  • monthly data will be available at a later stage; please contact us
Updated biomass burning emission factors and species Tess Carter (MIT) Emissions
Updated offline sea salt emissions Hongjian Weng (PKU)
Jintai Lin (PKU) 		Emissions
Canopy Physics Model Sam Silva (MIT) Emissions &
Science
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Model performance
  • Ongoing (will be done as time allows)
Assess memory leak in GCHP Killian Murphy (York) Model performance
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York) 		Model performance
Improve pressure handling in GCHP advection Seb Eastham (MIT)
Yuanjian Zhang (WashU) 		GCHP
Use ExtData2G as default GCHP input module Lizzie Lundgren (Harvard) GCHP Will replace ExtData.rc with yaml file

Over the horizon (6-12 months)

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

Feature Contributor(s) Model scope Notes and References
Snow / Icy Bromine Becky Alexander (UW)
William Swanson (U. Alaska)
Shuting Zhai (UW) 		Chemistry
Monoterpene oxidation scheme Jessica Haskins (MIT) Chemistry
Fire related VOCs including furans Lu Hu (UMT)
Lixu Jin (UMT) 		Chemistry
Extension of UCX into the mesosphere Seb Eastham (MIT)
Eric Fleming (NASA) 		Chemistry
Methane flux ingestion Eloise Marais (UCL) Chemistry
Dust non-sphericity impacts on surface chem and optical properties Inderjeet Singh (WashU) Aerosols
Size-resolved stratospheric aerosol Seb Eastham (MIT) Aerosols
Extend aerosol settling Eloise Marais (UCL) Aerosols
Stratospheric aerosol APM Fangqun Yu (SUNY) Aerosols
Plume-in-grid model Hongwei Sun (Harvard) Chemistry
Updated lightning NOx: Prescribe from ground and geostationary lightning flashes Lee Murray (Rochester) Emissions
Seb aircraft emissions beyond recent 2019 update Seb Eastham (MIT) Emissions
FRP-based fire emsisions for eastern US at 0.2 deg Charlie Fite (FSU) Emissions
Hg iodine chemistry Yiming Fu
Yanxu Zhang (Nanjing U.) 		Hg simulation
Hg simulation in GCHP Ari Feinberg (MIT)
Lyssa Freese (MIT) 		Hg simulation
Update Hg ocean and soil boundary conditions for consistency with new chemistry Yanxu Zhang (Nanjing U.) Hg simulation
Dry deposition diagnostics by land cover Holly Nowell (FSU) Diagnostics
Dry deposition process diagnostics Holly Nowell (FSU) Diagnostics
Isotope simulation for CO and CH4 in GCHP Lee Murray (Rochester) Carbon simulation
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Melissa Sulprizio (Harvard)
Tia Scarpelli (U. Edinburgh)
Zichong Chen (Harvard) 		Emissions
CH4 simulation
Modularization of aerosols code for interface with GOCART in GEOS Christoph Keller (GMAO) Structural
Improve load balancing in GCHP Seb Eastham (MIT) Model performance
Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer Bo Zhang (NIA)
Hongyu Liu (NIA / NASA Langley) 		Transport
Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer Gan Luo (SUNY Albany)
Fangqun Yu (SUNY-Albany) 		Transport
Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons Seb Eastham (MIT)
Clara Orbe (NASA GISS)
Andrew Schuh (CSU) 		Transport
MAPL version 3 Lizzie Lundgren (Harvard) GCHP Will include History wildcard handling in GCHP


Migrate benchmark meteorology from MERRA2 to GEOS-IT GCST Benchmarking

Longer term (12-24 months)

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

Feature Contributor(s) Model scope Notes and References
Updates to Aromatic chemistry Stephen MacFarlane (UOW)
Jenny Fisher (UOW) 		Chemistry
Nitrate photolysis Mat Evans (York)
Thomas Sherwen (York)
Matthew Rowlinson (York) 		Chemistry
In aerosol chemistry Halogens Mat Evans (York)
Hansen Cao (CU Boulder) 		Chemistry
Benchmark box model of GC Chemistry Katie Travis (NASA) Chemistry
Alkyl nitrates Alk7, PHAN Katie Travis (NASA) Chemistry
Add stratospheric ozone species to full-chemistry simulations Lee Murray (Rochester) Chemistry
Perchlorate chemistry Yuk Chun Chan (UWAB) Chemistry
Explicit heterogeneous sulfate chemistry Katie Travis (NASA)
Becky Alexander (UT) 		Chemistry
HOx and ozone "emissions" from lightning as option in model to play with Jingqiu (Alaska)
Lee Murray (Rochester) 		Emissions
Sea salt aerosol from sea ice leads Hannah Horowitz (U. Illinois) Emissions
Drought-stress algorithm Wei Li (U. Houston)
Biomass burning injection height profiles Inderjeet Singh (WashU) Emissions
OCIM integration Chris Holmes (FSU)
Lee Murray (Rochester)
Updating landcover products in GEOS-Chem Chris Holmes (FSU)
Jeff Geddes (BU) 		Input data
Dry deposition physical improvement Chris Holmes (FSU) Dry deposition
TOMAS WRF-GC in regional Thailand simulation Win Trivitayanurak (Chulalongkorn U) Aerosols
Retrieved from "https://wiki.seas.harvard.edu/geos-chem/index.php?title=GEOS-Chem_model_development_priorities&oldid=53758"