Difference between revisions of "GEOS-Chem model development priorities"

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(→‎Slated for inclusion in v11-02)
(→‎Feature integration in progress)
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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/2015/index.html International GEOS-Chem Meeting (IGC7)] in May 2015 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 Nov 2016 ==
+
See the links below for items merged and awaiting release.
  
−
The items listed below 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 14.4.0]]'''
  
−
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. More information on those items can be obtained on the [[GEOS-Chem v11-01]] wiki page.
+
|}
  
−
=== Ready to go in ===
+
== Feature integration in progress ==
  
−
==== Slated for inclusion in v11-02 ====
+
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.
  
−
The following items were prioritized for inclusion in [[GEOS-Chem v11-02]].
+
{| 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
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|- bgcolor="#cccccc"
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
!width="400px"|Item
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
−
!width="80px"|Type
+
|Emissions
−
!width="250px"|Author(s)
+
|Medium
−
!width="250px"|Status
+
|
 +
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
−
|[[Updates_in_JPL_Publication_15-10|Updating chemistry rate constants based on ''JPL Publication 15-10'']]
+
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
−
|Science
+
|Lizzie Lundgren (Harvard)
−
|Barron Henderson (U. Florida)<br>Mat Evans (U. York)<br>[[Chemistry Issues|Oxidants and Chemistry WG]]
+
|GC-Classic
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/HEMCO/issues/18 hemco issue #18]
  
 
|-valign="top"
 
|-valign="top"
−
|[[PAN|PAN updates]]
+
|Capture all trop and PBL height changes in budget diagnostics
−
|Science
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
−
|Emily Fischer (CSU)
+
|Diagnostics
 +
|Medium
 
|
 
|
−
*Delivered to GCST (May 2013)
+
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 +
 
 +
|}
 +
 
 +
== 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"
 
|-valign="top"
−
|Halogen chemistry updates
+
|ALK4 & R4N2 chemistry
−
|Science
+
|Jared Brewer (UMN)
−
|Tom&aacute;s Sherwen (York)<br>Johan Schmidt (Harvard)<br>[[Chemistry Issues|Oxidants and Chemistry WG]]
+
|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"
−
|Enhance default GEOS-Chem simple SOA
+
|Mass flux regridding fix in MAPL
−
|Science
+
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
−
|Aerosol Working Group Chairs
+
|GCHP input regridding
 +
|Medium
 +
|
 
|
 
|
 +
*[https://github.com/geoschem/GCHP/issues/377 GCHP Issue #377]
 +
*'''Currently on hold, as the submitted update results in zero diff'''
  
 
|-valign="top"
 
|-valign="top"
−
|[[Aerosol_optical_properties#Add_BC_absorption_enhancement_factor|Update density of BC to 1.8 and add absorption enhancement factor in input.geos]]
+
|New version of CEDS at 0.1 deg
−
|Science
+
|Dandan Zhang (WashU)
−
|Xuan Wang (MIT)
+
|Emissions
 +
|Simple
 +
|Delivered
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2016)
+
*[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.'''
 +
 
 +
|}
 +
 
 +
== 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 References
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to isoprene chemistry, includes:
+
|KORUS-AQ emissions for East Asia (as an option)
−
*Fast photolysis of carbonyl nitrates
+
|Katie Travis (NASA)
−
*Aerosol uptake of organic nitrates
+
|Emissions
−
*Nighttime isoprene chemistry
+
|Simple
−
|Science
+
−
|Jenny Fisher (U. Wollongong)<br>Elo&iuml;se Marais (Harvard)<br>Katie Travis (Harvard)<br>Kelvin Bates (Caltech)<br>Rebecca Schwantes(Caltech)
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Add aqueous isoprene uptake to SOA scheme
+
|Geologic emission of ethane and propane
−
|Science
+
|Matthew Rowlinson and Mat Evans(York)
−
|Eloise Marais (Harvard)
+
|Emissions
 +
|Delivered<br>Jan 2023
 
|
 
|
−
*Delivered to GCST (Jul 2016)
+
*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"
 
|-valign="top"
−
|[[NOx-Ox-HC-aerosol#Monthly mean surface distributions|Monthly mean surface methane distributions]]
+
|[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
 
|Science
−
|Lee Murray (NASA GISS/LDEO)
+
|Delivered<br>Feb 2021
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
−
|[[Rn-Pb-Be_simulation#Radon_flux_diagnostic|Radon flux diagnostic]]
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|Benchmarking
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
−
|[[GCST]]
+
|Emissions
 +
|Delivered<br>Jul 2021
 
|
 
|
 +
*Data involves many files- need to think about temporal frequency
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|[[EDGAR_v4.3_anthropogenic_emissions|EDGAR v4.3 emissions]]
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
−
|Science
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
−
|Chi Li (Dalhousie)
+
|Chemistry
 +
|Delivered<br>June 2023
 
|
 
|
−
*Delivered to GCST (Nov 2016)
+
*[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
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|EPA-derived BC/OA emissions over US (1990-2012)
+
|DMS Chemistry
−
|Science
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
−
|David Ridley (MIT)
+
|Chemistry
 +
|Not delivered
 
|
 
|
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|[[CAC_anthropogenic_emissions#Historical_emissions|Historical CAC emissions]]
+
|Organic acids (RCOOH)
−
|Science
+
|Katie Travis (NASA)
−
|Chi Li (Dalhousie)
+
|Chemistry
 +
|Not delivered
 
|
 
|
−
*Delivered to GCST (Nov 2016)
 
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|Default US emissions to NEI after 2011
+
|Improve carbon & nitrogen conservation in reactions
−
|Science
+
|Kelvin Bates (Harvard)
−
|Dalhousie group
+
|Chemistry
 +
|Not delivered
 
|
 
|
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|Ammonia from Arctic birds
+
|Blowing snow sea salt in TOMAS
−
|Science
+
|Betty Croft (Dalhousie)
−
|Dalhousie group
+
|Aerosols
 +
|Not delivered
 
|
 
|
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
−
|Science
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
−
|Fabien Paulot (NOAA/GFDL)
+
|Hg simulation
 +
|Not delivered
 
|
 
|
−
*Data files delivered to GCST (Jan 2016)
 
−
*Needs to be implemented via HEMCO
 
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|Lightning update based on Travis et al. (2016, ACP) and Zhang et al. (2014, ACP)
+
|WRF-GC Hg simulation
−
|Science
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
−
|Katie Travis (Harvard)
+
|Hg simulation<br>WRF-GC
 +
|Not delivered
 
|
 
|
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|[http://www.atmos-chem-phys.net/16/2819/2016/ A snow NOx source from deep snowpack]
+
|Updated HgII gas-partical partitioning
−
|Science
+
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
−
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
|Hg simulation
 +
|Not delivered
 
|
 
|
−
*Implemented in v9-01-01
+
*Should be option, not default
−
*Needs to be added as a HEMCO extension
+
  
 
|-valign="top"
 
|-valign="top"
−
|Fix to direct/diffuse radiation
+
|Dry deposition to F90 (readability)
−
|Science
+
|Chris Holmes (FSU)
−
|Katie Travis (Harvard)
+
|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.
 +
 +
{|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"
 
|-valign="top"
−
|Species Database Phase 3:
+
|PPN+hv, PPN+OH
−
*Harmonizing Henry's Law coefficients across wet and dry deposition
+
|Robert Ryan (UCL)
−
|Science
+
|Chemistry
−
|[[GCST]]
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updated organic deposition
+
|MBO
−
|Science
+
|Michael Vermeuel (UMN)
−
|Katie Travis (Harvard)<br>Jenny Fisher (U. Wollongong)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Remove dependence of species drydep on HNO3 drydep
+
|Initial conditions for CH4 correcting background and stratospheric biases
−
|Science
+
|Todd Mooring (Harvard)
−
|Katie Travis (Harvard)<br>Jenny Fisher (U. Wollongong)
+
|Methane simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[Wet_deposition#Update_SO2_scavenging_in_convective_updrafts_for_consistency|Update SO2 scavenging in convective updrafts for consistency]]
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Science
+
|Bob Yantosca (Harvard)
−
|Duncan Fairlie (NASA/LARC)
+
|Aerosols<br>Structural
 
|
 
|
 +
*Ongoing
  
 
|-valign="top"
 
|-valign="top"
−
|[[Aerosols_Working_Group#Sedimentation_of_stratospheric_aerosols|Sedimentation of stratospheric aerosols]]
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
|Science
+
|Betty Croft (Dalhousie)
−
|Sebastian Eastham (Harvard)
+
|Aerosols
 
|
 
|
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|[[GEOS-Chem_tracer_units|Uniformity of units]]
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
−
|Structural
+
|Betty Croft (Dalhousie)
−
|[[GCST]]
+
|Aerosols
 
|
 
|
−
*Phase 2 (unit uniformity throughout chemistry) to be implemented after Flexchem
 
−
*Phase 3 (unit uniformity in some specialty simulations) will be implemented in pieces with input from 3rd party developers
 
−
*Phase 4 (removal of area and area-dependent State_Met variables) will be ongoing
 
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|[[GEOS-Chem_Output_Files#NetCDF_File_Format|NetCDF Output Phase 3a: Output diagnostics in NetCDF format]]
+
|ML algorithms for bulk aerosols
−
|Structural
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
−
|[[GCST]]
+
|Aerosols
 
|
 
|
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|[[GEOS-Chem_Output_Files#NetCDF_File_Format|NetCDF Output Phase 3b: Updates to eliminate differences between single and multi-segmented GEOS-Chem runs]]
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
−
|Bug fix/Structural
+
|Shixian Zhai (Harvard)
−
|[[GCST]]<br>Christoph Keller
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[POPs simulation#PCB simulation|PCB simulation]]
+
|Updates to Hodzic SOA scheme
−
|Science
+
|Jared Brewer (Harvard)
−
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg code updates (chemistry, ocean, land)
+
|Automated reduction in isoprene scheme
−
|Science
+
|Dan Westervelt (Lamont-Doherty)
−
|[[Hg and POPs Working Group]]
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Surface ocean Hg boundary conditions from MITgcm
+
|Brown carbon chemsitry
−
|Science
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
−
|Hannah Horowitz (Harvard)
+
|Aerosols
 
|
 
|
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|Additional modifications for [[FlexChem]], including:
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
−
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, UCX, SOA, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
−
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Convection
−
|Structural
+
−
|Mike Long (Harvard)<br>[[GCST]]
+
 
|
 
|
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|FlexGrid: Use HEMCO I/O and regridding capabilities to read and regrid met fields
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
−
|Structural
+
|Jintai Lin (PKU)
−
|Jiawei Zhuang (Harvard)<br>Jintai Lin (PKU)
+
|Emissions
 
|
 
|
−
*Delivered to GCST (Oct 2016)
+
*Horizontal resolution: 5km, temporal resolution: JJA mean
 +
*monthly data will be available at a later stage; please contact us
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|Merge standard simulation with specialty simulations for OVOC, acids, aromatics, dicarbonyls, terpenes
+
|Updated biomass burning emission factors and species
−
|Science
+
|Tess Carter (MIT)
−
|Dylan Millet (UMN)<br>Xin Chen (UMN)
+
|Emissions
 
|
 
|
  
−
|-bgcolor="#CCFFFF"
+
|-valign="top"
−
|Nested CO2, CH4, Hg, TOMAS, adjoint, etc.
+
|Updated offline sea salt emissions
−
|Science
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
−
|[[Nested Model Working Group]]
+
|Emissions
 
|
 
|
  
−
|}
+
|-valign="top"
 +
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
 +
|Sam Silva (MIT)
 +
|Emissions &<br>Science
 +
|
 +
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
 +
*Needs to be updated to a more recent GEOS-Chem version
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:13, 7 November 2016 (UTC)
+
|-valign="top"
−
 
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
−
==== Defer to v11-03 unless ready in time for v11-02 ====
+
|Bob Yantosca (Harvard)
−
 
+
|Model performance
−
{| border=1 cellspacing=0 cellpadding=5
+
|
−
|- bgcolor="#cccccc"
+
*Ongoing (will be done as time allows)
−
!width="400px"|Item
+
−
!width="80px"|Type
+
−
!width="250px"|Author(s)
+
−
!width="250px"|Status
+
  
 
|-valign="top"
 
|-valign="top"
−
|Global evaluation of using LWC and IWC from met fields for wet scavenging
+
|Assess memory leak in GCHP
−
||Science
+
|Killian Murphy (York)
−
|Hongyu Liu (NIA/NASA LARC)<br>Bo Zhang (NIA)
+
|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"
−
|Kz eddy mixing scheme
+
|Hybrid MPI-OpenMP in GCHP
−
|Science
+
|Seb Eastham (MIT)<br>Killian Murphy (York)
−
|Karen Yu (Harvard)
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|VBS SOA option
+
|Improve pressure handling in GCHP advection
−
|Science
+
|Seb Eastham (MIT)<br>Yuanjian Zhang (WashU)
−
|Rokjin Park (SNU)
+
|GCHP
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Benchmark of stratosphere simulation
+
|Use ExtData2G as default GCHP input module
−
|Benchmarking
+
|Lizzie Lundgren (Harvard)
−
|Dylan Jones (U. Toronto)
+
|GCHP
−
|
+
|Will replace ExtData.rc with yaml file
−
*1-yr benchmarks for GEOS-Chem v11-01d and later include comparisons with OSIRIS O3
+
−
*Waiting on OSIRIS NO2 data
+
−
*Waiting on comparisons with ACE-FTS data
+
  
 
|}
 
|}
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:13, 7 November 2016 (UTC)
+
== Over the horizon (6-12 months) ==
  
−
==== Not prioritized for v11-02 (revisit at IGC8) ====
+
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="80px"|Type
+
!width="200px"|Contributor(s)
−
!width="250px"|Author(s)
+
!width="100px"|Model scope
−
!width="250px"|Status
+
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[[Python code for GEOS-Chem|Python GEOS-Chem output processing and visualization package]]
+
|Snow / Icy Bromine
−
|Software package
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
−
|Beno&icirc;t Bovy (U. Li&egrave;ge-Belgium)
+
|Chemistry
 
|
 
|
−
*Users may download, test it, and submit feedback to Benoit Bovy.
 
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt emission from sea ice
+
|Monoterpene oxidation scheme
−
|Science
+
|Jessica Haskins (MIT)
−
|Jiayue Huang (UW)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Re-evaluation of SST dependence of sea salt emissions
+
|Fire related VOCs including furans
−
|Science
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
−
|Jiayue Huang (UW)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|MOSAIC implementation
+
|Extension of UCX into the mesosphere
−
|Science
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
−
|Sebastian Eastham (Harvard)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Discussion_of_LAI_Data_Sources|Update MODIS LAI fields through 2015]]
+
|Methane flux ingestion
−
|Science
+
|Eloise Marais (UCL)
−
|Barron Henderson (UF)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Lightning NOx chemistry parameterization
+
|Dust non-sphericity impacts on surface chem and optical properties
−
|Science
+
|Inderjeet Singh (WashU)
−
|Alicia Gressent (MIT)
+
|Aerosols
 
|
 
|
  
−
|}
+
|-valign="top"
 +
|Size-resolved stratospheric aerosol
 +
|Seb Eastham (MIT)
 +
|Aerosols
 +
|
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:13, 7 November 2016 (UTC)
+
|-valign="top"
 +
|Extend aerosol settling
 +
|Eloise Marais (UCL)
 +
|Aerosols
 +
|
  
−
=== Over the horizon (6-12 months) ===
+
|-valign="top"
 +
|Stratospheric aerosol APM
 +
|Fangqun Yu (SUNY)
 +
|Aerosols
 +
|
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|- bgcolor="#cccccc"
+
|Plume-in-grid model
−
!width="400px"|Item
+
|Hongwei Sun (Harvard)
−
!width="80px"|Type
+
|Chemistry
−
!width="250px"|Author(s)
+
|
−
!width="250px"|Status
+
  
 
|-valign="top"
 
|-valign="top"
−
|Dust emissions at nested-grid resolution
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
−
|Science
+
|Lee Murray (Rochester)
−
|Yuxuan Wang (Texas A&M)<br>Jun Wang (UNL)
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive meteorological fields with higher resolution (for RCPs)
+
|Seb aircraft emissions beyond recent 2019 update
−
|Science
+
|Seb Eastham (MIT)
−
|Lee Murray (NASA GISS/LDEO)
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Land cover module in GEOS-Chem
+
|FRP-based fire emsisions for eastern US at 0.2 deg
−
|Science
+
|Charlie Fite (FSU)
−
|Jeffrey Geddes (MIT)<br>Michael Long (Harvard)
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Improved lightning emission scheme
+
|Hg iodine chemistry
−
|Science
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
−
|Lee Murray (NASA GISS/LDEO)
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive high resolution wind fields for sea salt
+
|Hg simulation in GCHP
−
|Science
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
−
|[[GEOS-Chem Support Team]]
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Cl chemistry updates
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
−
|Science
+
|Yanxu Zhang (Nanjing U.)
−
|Lyatt Jaegl&eacute; (UW)
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Automate redistribution of NOx in HEMCO
+
|Dry deposition diagnostics by land cover
−
|Science
+
|Holly Nowell (FSU)
−
|Lee Murray (NASA GISS/LDEO)
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Injection height for fire emissions
+
|Dry deposition process diagnostics
−
|Science
+
|Holly Nowell (FSU)
−
|Emily Fischer (CSU)
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Include Hg in full chemistry
+
|Isotope simulation for CO and CH4 in GCHP
−
|Science
+
|Lee Murray (Rochester)
−
|Noelle Selin (MIT)
+
|Carbon simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|DMS oxidation scheme updating
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
−
|Science
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
−
|Tom Breider (Harvard)<br>Becky Alexander (U. Washington)<br>[[Chemistry Issues|Oxidants and Chemistry Working Group]]
+
|Emissions<br>CH4 simulation
 
|
 
|
−
*Currently being worked on by a member of the [http://www.atmos.washington.edu/blog/beckya/group-members/ Alexander group]
 
  
 
|-valign="top"
 
|-valign="top"
−
|Historical Hg emissions (1850-present)
+
|Modularization of aerosols code for interface with GOCART in GEOS
−
|Science
+
|Christoph Keller (GMAO)
−
|Hannah Horowitz (Harvard)
+
|Structural
 
|
 
|
−
*Awaiting completion of David Street's revised 1850-present inventory
 
  
 
|-valign="top"
 
|-valign="top"
−
|Joint CO/CO2/CH4 forward model simulation
+
|Improve load balancing in GCHP
−
|Science
+
|Seb Eastham (MIT)
−
|Nicholas Deutscher (U. Wollongong)
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Past and future fire emissions under RCPs
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
−
|Science
+
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
−
|Loretta Mickley (Harvard)<br>Yuhang Wang (GIT)<br>Shiliang Wu (MT)
+
|Transport
 
|
 
|
−
*Some regional (western US, Canada, and Alaska) inventories for the 2050s A1B scenario are available by request (Loretta Mickley).
 
−
*Further work on global scale and other scenarios are underway.
 
  
 
|-valign="top"
 
|-valign="top"
−
|Benchmark for 0.25x0.3125 nested NA model
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
−
|Benchmarking
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
−
|Jun Wang (UNL)
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Emission scheme of dust: subgrid wind variation to remove resolution dependence and better interannual variability
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
−
|Science
+
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
−
|David Ridley (MIT)
+
|Transport
 +
|
 +
 
 +
|-valign="top"
 +
|MAPL version 3
 +
|Lizzie Lundgren (Harvard)
 +
|GCHP
 +
|Will include History wildcard handling in GCHP
 +
 
 +
 
 +
|-valign="top"
 +
|Migrate benchmark meteorology from MERRA2 to GEOS-IT
 +
|GCST
 +
|Benchmarking
 
|
 
|
  
 
|}
 
|}
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:13, 7 November 2016 (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="400px"|Item
+
!width="200px"|Feature
−
!width="80px"|Type
+
!width="200px"|Contributor(s)
−
!width="250px"|Author(s)
+
!width="100px"|Model scope
−
!width="250px"|Status
+
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate and nitrate simulation]], including
+
|Updates to Aromatic chemistry
−
*[[Sulfate_aerosols#Metal_catalyzed_oxidation_of_SO2|Metal catalyzed oxidation of SO2]] (as a switch)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
−
|Science
+
|Chemistry
−
|Becky Alexander (UW)
+
 
|
 
|
−
*These updates been implemented in v9-02, but have not been successfully merged with HEMCO in v10-01
 
−
*Improvements for the tagged nitrate simulation are in the pipeline
 
  
 
|-valign="top"
 
|-valign="top"
−
|CO2 dependence of stomata conductance in dry deposition
+
|Nitrate photolysis
−
|Science
+
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
−
|Amos Tai (CUHK)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Ozone damage to vegetation
+
|In aerosol chemistry Halogens
−
|Science
+
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
−
|Amos Tai (CUHK)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Bi-directional NH3 emissions
+
|Benchmark box model of GC Chemistry
−
|Science
+
|Katie Travis (NASA)
−
|Juliet Zhu (CSU)<br>Lin Zhang (PKU)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Arsenic simulation
+
|Alkyl nitrates Alk7, PHAN
−
|Science
+
|Katie Travis (NASA)
−
|Shiliang Wu (MT)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Dry deposition: Update the ozone dry deposition scheme
+
|Add stratospheric ozone species to full-chemistry simulations
−
|Science
+
|Lee Murray (Rochester)
−
|[http://www.chem.utoronto.ca/wp/murphygroup/ Murphy group] (UofT)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Country-based weekend/weekday variability for EDGAR v4.2
+
|Perchlorate chemistry
−
|Science
+
|Yuk Chun Chan (UWAB)
−
|Lee Murray (NASA GISS/LDEO)<br>Christoph Keller (Harvard)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Resolution-independent lightning NOx scaling
+
|Explicit heterogeneous sulfate chemistry
−
|Science
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
−
|Lee Murray (NASA GISS/LDEO)
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Nested-grid model with GEOS-FP at 1/2&deg; x 5/8&deg; resolution
+
|HOx and ozone "emissions" from lightning as option in model to play with
−
|Structural
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
−
|[[Nested Model Working Group]]
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Update HCN simulation, implement in standard model via FlexChem
+
|Sea salt aerosol from sea ice leads
−
|Science
+
|Hannah Horowitz (U. Illinois)
−
|Jenny Fisher (U. Wollongong)
+
|Emissions
 
|
 
|
−
*Not a priority
 
  
 
|-valign="top"
 
|-valign="top"
−
|TNO emissions over Europe (7km)
+
|Drought-stress algorithm
−
|Science
+
|Wei Li (U. Houston)
−
|[http://acmg.seas.harvard.edu/geos/geos_people.html#athens Greece team]
+
|
 
|
 
|
−
*On hold indefinitely
 
  
 
|-valign="top"
 
|-valign="top"
−
|Implement biogenic emissions of ethane, propane
+
|Biomass burning injection height profiles
−
|Science
+
|Inderjeet Singh (WashU)
−
|Zitely Tzompa (CSU)
+
|Emissions
 
|
 
|
−
*On hold indefinitely
 
  
 
|-valign="top"
 
|-valign="top"
−
|Subgrid scale precipitation variability
+
|OCIM integration
−
|Science
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
−
|[http://acmg.seas.harvard.edu/ Harvard group]
+
|
 
|
 
|
−
*On hold indefinitely
 
  
−
|}
+
|-valign="top"
 +
|Updating landcover products in GEOS-Chem
 +
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
 +
|Input data
 +
|
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:13, 7 November 2016 (UTC)
+
|-valign="top"
 +
|Dry deposition physical improvement
 +
|Chris Holmes (FSU)
 +
|Dry deposition
 +
|
 +
 
 +
|-valign="top"
 +
|TOMAS WRF-GC in regional Thailand simulation
 +
|Win Trivitayanurak (Chulalongkorn U)
 +
|Aerosols
 +
|
 +
 
 +
|}

Revision as of 20:39, 6 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 14.4.0

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
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

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.

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
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