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

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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 [http://acmg.seas.harvard.edu/geos/geos_working_groups.html Working Groups] and the [http://acmg.seas.harvard.edu/geos/geos_steering_cmte.html Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
+
 
+
== Release schedule ==
+
 
+
Please see the [http://wiki.seas.harvard.edu/geos-chem/images/e/e1/GEOS-Chem_Release_Proposal.pdf GEOS-Chem Release Proposal] outlining the procedure and schedule for releasing GEOS-Chem versions.  
+
  
 
== Merged and awaiting release ==
 
== Merged and awaiting release ==
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{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
!width="200px"|Patch version in development
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!width="300px"|Mergeable at any time
!width="200px"|Minor version in development
+
!width="200px"|Version in development
  
 
|-valign="top"
 
|-valign="top"
|align="center"|'''[[GEOS-Chem 13.3.3]]'''
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|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
|align="center"|'''[[GEOS-Chem 13.4.0]]'''
+
|align="center"|'''[[GEOS-Chem 14.4.0]]'''
  
 
|}
 
|}
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== Feature integration in progress ==
 
== 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.  
+
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  
 
{| border=1 cellspacing=0 cellpadding=5  
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!width="100px"|Model scope
 
!width="100px"|Model scope
 
!width="100px"|Ease of implementation
 
!width="100px"|Ease of implementation
!width="300px"|Notes
+
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/1001 Fix bug in Henry law CALC_HEFF routine in hetchem computations]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
|Viral Shah (Harvard
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
|Chemistry
+
|Emissions
|Easy
+
|Simple
 
|
 
|
* [https://github.com/geoschem/geos-chem/pull/961 geoschem/geos-chem #1001]
 
  
 
|-valign="top"
 
|-valign="top"
|Use degassing-only volcano emissions for benchmark simulations
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
|Christoph Keller (GMAO)<br>Daniel Jacob (Harvard)
+
|Haihui Zhu (WashU)
|Emissions &<br>Benchmarking
+
|Aerosols
|Easy
+
|Medium
 
|
 
|
*See [https://github.com/geoschem/geos-chem/pull/1005 geoschem/geos-chem #1005]
+
*[https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1292/ Zhu et al., EGUsphere, submitted 2023.]
*Currently slated for 13.4.0
+
*[https://github.com/geoschem/geos-chem/pull/1902 geos-chem PR #1902]
  
 
|-valign="top"
 
|-valign="top"
|Upgrade Fast-JX to Cloud-J
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Lizzie Lundgren (GCST)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Structural
+
|Emissions
|Difficult
+
|Medium
 
|
 
|
*See [https://github.com/geoschem/cloud-j geoschem/cloud-j]
+
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
|Migrating sulfate chemistry into KPP
+
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
|Mike Long (GCST)
+
|Lizzie Lundgren (Harvard)
|Chemistry &<br>Structural
+
|GC-Classic
|Difficult
+
|Medium
 
|
 
|
*Complete but needs validation & further testing
+
*[https://github.com/geoschem/HEMCO/issues/18 hemco issue #18]
  
 
|-valign="top"
 
|-valign="top"
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry in KPP]
+
|Replace ISORROPIA with [https://gmd.copernicus.org/articles/17/2197/2024/ HETPv1.0]
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)<br>Mike Long (Harvard)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (ICL)
|Chemistry
+
|Aerosol thermodynamics
 
|Medium
 
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/2235 geos-chem issue #2235]
  
 
|-valign="top"
 
|-valign="top"
|Add capability to use mass fluxes in advection
+
|Only convert units for species that need it
|Sebastian Eastham (MIT) <br> Liam Bindle (GCST)
+
|Bob Yantosca (Harvard)
|Transport
+
|Unit conversions
|Easy
+
|Medium
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
+
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]
*GCHP only
+
 
+
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
+
|Capture all trop and PBL height changes in budget diagnostics
|Melissa Sulprizio (GCST)
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Emissions
+
|Diagnostics
|Easy
+
|Medium
 
|
 
|
 +
*[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"
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx], [https://github.com/geoschem/geos-chem/issues/331 biomass burning], and [https://github.com/geoschem/geos-chem/issues/656 volcanoes]
+
|ALK4 & R4N2 chemistry
|Lee Murray (Rochester)<br>Melissa Sulprizio (GCST)
+
|Jared Brewer (UMN)
|Emissions
+
|Chemistry
|Easy
+
|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://github.com/geoschem/geos-chem/pull/945 Add option for driving GEOS-Chem with native GEOS meteorological files]
+
|Mass flux regridding fix in MAPL
|Liam Bindle (GCST)
+
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
|Structural
+
|GCHP input regridding
|Easy
+
|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"
|[https://github.com/geoschem/geos-chem/pull/990 Change State_Chm%Species from 4D to vector of 3D arrays]
+
|New version of CEDS at 0.1 deg
|Lizzie Lundgren (GCST)
+
|Dandan Zhang (WashU)
|Structural
+
|Emissions
|Medium
+
|Simple
 +
|Delivered
 
|
 
|
 +
*[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.'''
 +
 
|}
 
|}
  
== Feature integration in the queue ==
+
== Ready to go in ==
  
Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.
+
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  
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!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
!width="100px"|Ease of implementation
+
!width="100px"|Delivery status
!width="300px"|Notes
+
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|Application of scaling factors for methane (also CO2, Hg?) emissions through HEMCO.
+
|KORUS-AQ emissions for East Asia (as an option)
|GCST
+
|Katie Travis (NASA)
 
|Emissions
 
|Emissions
|Medium to difficult
+
|Simple
+
|
 +
 
 
|-valign="top"
 
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
+
|Geologic emission of ethane and propane
|Sam Silva (MIT)
+
|Matthew Rowlinson and Mat Evans(York)
 
|Emissions
 
|Emissions
|Medium
+
|Delivered<br>Jan 2023
 
|
 
|
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR
+
*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
*Base code version is 12.3.0
+
  
 
|-valign="top"
 
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Sam Silva (MIT)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
|Medium
+
|Delivered<br>Feb 2021
 
|
 
|
*Code is available at https://zenodo.org/record/3614062
+
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
*Base code version is 12.3.0
+
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/997 Update surface resistance for ozone deposition to ice/snow]
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Ryan Pound (York)<br>Shuting Zhai (UW)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
|Drydep
+
|Emissions
|Easy
+
|Delivered<br>Jul 2021
 
|
 
|
*See [https://github.com/geoschem/geos-chem/issues/997 geoschem/geos-chem PR #997]
+
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
|Specialty simulation
+
|Chemistry
|Medium
+
|Delivered<br>June 2023
 
|
 
|
*See [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
+
*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
*Ideally implemented as a chemical mechanism in KPP
+
*Implemented in v12.5, needs to be brought up to current version
  
 
|-valign="top"
 
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
+
|DMS Chemistry
|Mike Long (Harvard) <br> Haipeng Lin (Harvard)  
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 
|Chemistry
 
|Chemistry
|Difficult
+
|Not delivered
 
|
 
|
*In testing
 
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/770 Output satellite diagnostics as NetCDF]
+
|Organic acids (RCOOH)
|Eloise Marais (UCL)  
+
|Katie Travis (NASA)
|Diagnostics
+
|Chemistry
|Easy
+
|Not delivered
 
|
 
|
  
 +
|-valign="top"
 +
|Improve carbon & nitrogen conservation in reactions
 +
|Kelvin Bates (Harvard)
 +
|Chemistry
 +
|Not delivered
 +
|
 +
 +
|-valign="top"
 +
|Blowing snow sea salt in TOMAS
 +
|Betty Croft (Dalhousie)
 +
|Aerosols
 +
|Not delivered
 +
|
 +
 +
|-valign="top"
 +
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
 +
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
 +
|Hg simulation
 +
|Not delivered
 +
|
 +
 +
|-valign="top"
 +
|WRF-GC Hg simulation
 +
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation<br>WRF-GC
 +
|Not delivered
 +
|
 +
 +
|-valign="top"
 +
|Updated HgII gas-partical partitioning
 +
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
 +
|Hg simulation
 +
|Not delivered
 +
|
 +
*Should be option, not default
 +
 +
|-valign="top"
 +
|Dry deposition to F90 (readability)
 +
|Chris Holmes (FSU)
 +
|Dry deposition
 +
|Not delivered
 +
|
  
 
|}
 
|}
  
== Feature integration not yet prioritized ==
+
== Almost there (< 6 months) ==
  
Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integrating into the model.
+
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
  
{| border=1 cellspacing=0 cellpadding=5  
+
{|border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
+
|- bgcolor="#cccccc"
 
!width="200px"|Feature
 
!width="200px"|Feature
 
!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
!width="100px"|Ease of implementation
+
!width="420px"|Notes and References
!width="300px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
+
|PPN+hv, PPN+OH
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
+
|Robert Ryan (UCL)
 
|Chemistry
 
|Chemistry
|Medium
 
 
|
 
|
*Delivered to GCST (Jun 2020)
 
  
 
|-valign="top"
 
|-valign="top"
|[https://gmd.copernicus.org/articles/13/1137/2020/ GC-YIBs biosphere-atmospheric chemistry coupled model]
+
|MBO
|Xu Yue (NUIST)
+
|Michael Vermeuel (UMN)
|Science
+
|Chemistry
|Easy
+
 
|
 
|
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
 
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
+
|Initial conditions for CH4 correcting background and stratospheric biases
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
+
|Todd Mooring (Harvard)
|Science
+
|Methane simulation
|Easy
+
 
|
 
|
*Delivered to GCST (Feb 2021)
 
*See [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
 
  
 
|-valign="top"
 
|-valign="top"
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
+
|Bob Yantosca (Harvard)
|Chemistry
+
|Aerosols<br>Structural
|Easy
+
 
|
 
|
 +
*Ongoing
  
 
|-valign="top"
 
|-valign="top"
|Landcover/Fire Emissions Offline LPJlmfire
+
|Re-binning of off-line sea salt and dust for use in TOMAS
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
+
|Betty Croft (Dalhousie)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
 +
|Betty Croft (Dalhousie)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|ML algorithms for bulk aerosols
 +
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
 +
|Shixian Zhai (Harvard)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Updates to Hodzic SOA scheme
 +
|Jared Brewer (Harvard)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Automated reduction in isoprene scheme
 +
|Dan Westervelt (Lamont-Doherty)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Brown carbon chemsitry
 +
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
 +
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
 +
|Convection
 +
|
 +
 
 +
|-valign="top"
 +
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
 +
|Jintai Lin (PKU)
 
|Emissions
 
|Emissions
|Easy
 
 
|
 
|
*Data files delivered to GCST (July 2021)
+
*Horizontal resolution: 5km, temporal resolution: JJA mean
 +
*monthly data will be available at a later stage; please contact us
  
 
|-valign="top"
 
|-valign="top"
|Anthropogenic Methane Emission Inventory for Canada
+
|Updated biomass burning emission factors and species
|Tia Scarpelli (U. Edinburgh)
+
|Tess Carter (MIT)
 
|Emissions
 
|Emissions
|Easy
 
 
|
 
|
*Scarpelli, T.R., D.J. Jacob, M. Moran, F. Reuland, and D. Gordon, [https://projects.iq.harvard.edu/acmg/publications/gridded-inventory-canadas-anthropogenic-methane-emissions A gridded inventory of Canada's anthropogenic methane emissions], submitted to Environ. Res. Lett., 2021.
 
  
 
|-valign="top"
 
|-valign="top"
|Updated Global Inventory of Methane Emissions from Oil/Gas/Coal (GFEI v2)
+
|Updated offline sea salt emissions
|Tia Scarpelli (U. Edinburgh)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
 
|Emissions
 
|Emissions
|Easy
 
 
|
 
|
*Scarpelli, T.R., D.J. Jacob, S. Grossman, X. Lu, Z. Qu, M.P. Sulprizio, Y. Zhang, F. Reuland, and D. Gordon, [https://acmg.seas.harvard.edu/files/acmg/files/scarpelli2021_gfei.pdf Updated Global Fuel Exploitation Inventory (GFEI) for methane emissions from the oil, gas, and coal sectors: evaluation with inversions of atmospheric methane observations], submitted to Atmos. Chem. Phys., 2021
+
 
 +
|-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
 +
 
 +
|-valign="top"
 +
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
 +
|Bob Yantosca (Harvard)
 +
|Model performance
 +
|
 +
*Ongoing (will be done as time allows)
 +
 
 +
|-valign="top"
 +
|Retire all BPCH diagnostics
 +
|Bob Yantosca (Harvard)
 +
|Diagnostics
 +
|
 +
*Can be done following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]
 +
 
 +
|-valign="top"
 +
|Assess memory leak in GCHP
 +
|Killian Murphy (York)
 +
|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]. Need to assess if any memory leaks still remain.
 +
 
 +
|-valign="top"
 +
|Hybrid MPI-OpenMP in GCHP
 +
|Seb Eastham (MIT)<br>Killian Murphy (York)
 +
|Model performance
 +
|
 +
 
 +
|-valign="top"
 +
|Improve run directory templating and creation with init_rd.sh and shared directories
 +
|Jourdan He (WashU)
 +
|Run directories
 +
|
 +
 
 +
|-valign="top"
 +
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
 +
|GCST?
 +
|Documentation
 +
|
  
 
|}
 
|}
  
== Almost there (< 6 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 within the next 6 months.
+
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
Line 263: Line 405:
 
!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
!width="420px"|Notes
+
!width="420px"|Notes and References
  
 +
|-valign="top"
 +
|Snow / Icy Bromine
 +
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
 +
|Chemistry
 +
|
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
+
|Monoterpene oxidation scheme
|Chris Holmes (FSU)
+
|Jessica Haskins (MIT)
 
|Chemistry
 
|Chemistry
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
 
 
  
 
|-valign="top"
 
|-valign="top"
|[https://iopscience.iop.org/article/10.1088/1748-9326/ac16a3 New soil NOx parameterization]
+
|Fire related VOCs including furans
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
|Emissions
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
+
|Extension of UCX into the mesosphere
|Hongjian Weng (PKU)
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
|Emissions
+
|Chemistry
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
 
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions|Updated offline sea salt emissions]]
+
|Methane flux ingestion
|Hongjian Weng (PKU)
+
|Eloise Marais (UCL)
|Emissions
+
|Chemistry
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
 
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
+
|Dust non-sphericity impacts on surface chem and optical properties
|Hongjian Weng (PKU)
+
|Inderjeet Singh (WashU)
|Emissions
+
|Aerosols
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
 
  
 
|-valign="top"
 
|-valign="top"
|Provide recommended rather than hard-coded scaling factors for online emissions
+
|Size-resolved stratospheric aerosol
|GCST
+
|Seb Eastham (MIT)
|Emissions
+
|Aerosols
 
|
 
|
*Identified as a priority for GC 13, but not yet developed
 
  
 
|-valign="top"
 
|-valign="top"
|Diagnostic to archive XCO2, XCO, and XCH4
+
|Extend aerosol settling
|Dylan Jones (Toronto)
+
|Eloise Marais (UCL)
|Diagnostic
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
+
|Stratospheric aerosol APM
|Kazu Miyazaki (JPL)
+
|Fangqun Yu (SUNY)
|Input data
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|BrC aging
+
|Plume-in-grid model
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
+
|Hongwei Sun (Harvard)
 
|Chemistry
 
|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)
 
|Emissions
 
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Rediagnosis of RAS convection in GEOS-Chem
+
|Seb aircraft emissions beyond recent 2019 update
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
+
|Seb Eastham (MIT)
|Convection
+
|Emissions
 
|
 
|
*Work is finished and a manuscript is in preparation.
 
  
 
|-valign="top"
 
|-valign="top"
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
+
|FRP-based fire emsisions for eastern US at 0.2 deg
|Sebastian Eastham (MIT) <br> Liam Bindle (GCST)
+
|Charlie Fite (FSU)
|Transport
+
|Emissions
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
 
*GCHP only
 
  
 
|-valign="top"
 
|-valign="top"
|HTAPv3 emissions (0.1 deg, 2002-2018)
+
|Hg iodine chemistry
|Emissions & Deposition WG
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
|Emissions
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
+
|Hg simulation in GCHP
|GCST
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
|Chemistry
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updated parameterization of aerosol size distribution for bulk aerosol simulations
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
|Haihui Zhu (WashU)<br>Shixian Zhai (Harvard)
+
|Yanxu Zhang (Nanjing U.)
|Aerosols
+
|Hg simulation
 
|
 
|
  
|}
+
|-valign="top"
 +
|Dry deposition diagnostics by land cover
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
  
== Over the horizon (6-12 months) ==
+
|-valign="top"
 +
|Dry deposition process diagnostics
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
  
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.
+
|-valign="top"
 +
|Isotope simulation for CO and CH4 in GCHP
 +
|Lee Murray (Rochester)
 +
|Carbon simulation
 +
|
  
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
|- bgcolor="#cccccc"
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
!width="200px"|Feature
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
!width="200px"|Contributor(s)
+
|Emissions<br>CH4 simulation
!width="100px"|Model scope
+
|
!width="420px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
|Methylethylketone chemistry
+
|Modularization of aerosols code for interface with GOCART in GEOS
|Jared Brewer (CSU)
+
|Christoph Keller (GMAO)
|Chemistry
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Add sulfate dependence to SOA yield from isoprene in simple SOA
+
|Improve load balancing in GCHP
|Eloise Marais (UCL)
+
|Seb Eastham (MIT)
|Chemistry
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|GTMM updates
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
|Ben Geyman (Harvard)
+
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
|Hg simulation
+
|Transport
 
|
 
|
 
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Christoph Keller (NASA GMAO)
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
|Transport Tracer simulation
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Streamlining of specialty simulations through HEMCO and KPP
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
|GCST
+
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
|Chemistry, Specialty simulations
+
|Transport
 
|
 
|
  
Line 414: Line 562:
  
 
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.
 
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"
Line 419: Line 568:
 
!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
!width="420px"|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)
|Specialty simulation
+
|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)
|Structural
+
|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)
 
|Chemistry
 
|Chemistry
 
|
 
|
*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
+
|Benchmark box model of GC Chemistry
|Becky Alexander (UW)
+
|Katie Travis (NASA)
|Aerosols
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|DMS oxidation scheme updating
+
|Alkyl nitrates Alk7, PHAN
|Becky Alexander (UW)<br>Qianjie Chen (UW)
+
|Katie Travis (NASA)
 
|Chemistry
 
|Chemistry
 
|
 
|
*Delayed - implemented pre-KPP
 
*Currently bring implemented in KPP by UC Riverside group
 
  
 
|-valign="top"
 
|-valign="top"
|Heterogeneous sulfate production
+
|Add stratospheric ozone species to full-chemistry simulations
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Lee Murray (Rochester)
 
|Chemistry
 
|Chemistry
 
|
 
|
*Delayed - implemented pre-KPP
 
  
 
|-valign="top"
 
|-valign="top"
|Hg in WRF-GC
+
|Perchlorate chemistry
|Yanxu Zhang (Nanjing)
+
|Yuk Chun Chan (UWAB)
|Hg simulation
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg with blowing snow
+
|Explicit heterogeneous sulfate chemistry
|Yanxu Xhang (Nanjing)
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
|Emissions, Hg simulation
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg isotopes
+
|HOx and ozone "emissions" from lightning as option in model to play with
|Xiaotian Xu, Yanxu Xhang (Nanjing)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
|Hg simulation
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg in CESM CAM-CHEM
+
|Sea salt aerosol from sea ice leads
|Peng Zhang, Yanxu Xhang (Nanjing)
+
|Hannah Horowitz (U. Illinois)
|Hg simulation
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Complex / multicomplex variables
+
|Drought-stress algorithm
|Shannon Capps (Drexel)
+
|Wei Li (U. Houston)
|Structural
+
|
 
|
 
|
  
|}
+
|-valign="top"
 +
|Biomass burning injection height profiles
 +
|Inderjeet Singh (WashU)
 +
|Emissions
 +
|
  
----------------
+
|-valign="top"
 +
|OCIM integration
 +
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
 +
|
 +
|
  
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
+
|-valign="top"
 +
|Updating landcover products in GEOS-Chem
 +
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
 +
|Input data
 +
|
 +
 
 +
|-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
 +
|
 +
 
 +
|}

Latest revision as of 20:55, 18 April 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
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech)
Emissions Simple
Parameterization of SNA and OM dry size Haihui Zhu (WashU) Aerosols Medium
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
Replace ISORROPIA with HETPv1.0 Lizzie Lundgren (Harvard)
Seb Eastham (ICL)
Aerosol thermodynamics Medium
Only convert units for species that need it Bob Yantosca (Harvard) Unit conversions 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)
Retire all BPCH diagnostics Bob Yantosca (Harvard) Diagnostics
Assess memory leak in GCHP Killian Murphy (York) Model performance
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York)
Model performance
Improve run directory templating and creation with init_rd.sh and shared directories Jourdan He (WashU) Run directories
Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc GCST? Documentation

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

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