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]]'''''
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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]].
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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]].
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== Release schedule ==
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+
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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"
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!width="200px"|Patch version in development
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!width="300px"|Mergeable at any time
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!width="200px"|Minor version in development
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!width="200px"|Version in development
  
 
|-valign="top"
 
|-valign="top"
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|align="center"| -
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|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
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|align="center"|'''[[GEOS-Chem 13.4.0]]'''
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|align="center"|'''[[GEOS-Chem 14.3.0]]'''
  
 
|}
 
|}
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== Feature integration in progress ==
 
== Feature integration in progress ==
  
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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.  
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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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|-valign="top"
 
|-valign="top"
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|[https://github.com/geoschem/geos-chem/pull/945 Add option for driving GEOS-Chem with native GEOS meteorological files]
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|TOMAS in GCHP
−
|Liam Bindle (GCST)
+
|Betty Croft (Dalhousie)
−
|Structural
+
|TOMAS
−
|Easy
+
|Simple
 
|
 
|
−
* [https://github.com/geoschem/geos-chem/pull/945 geoschem/geos-chem PR #945]
+
*[https://github.com/geoschem/GCHP/pull/221 GCHP PR #221]
−
* [https://github.com/geoschem/GCHP/pull/164 geoschem/GCHP PR #164]
+
*[https://github.com/geoschem/geos-chem/pull/1261 geos-chem PR #1261]
−
* [https://github.com/geoschem/HEMCO/pull/945 geoschem/HEMCO PR #113]
+
*[https://github.com/geoschem/HEMCO/pull/145 geoschem/HEMCO PR #145]
  
 
|-valign="top"
 
|-valign="top"
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|Migrating sulfate chemistry into KPP
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|[https://github.com/geoschem/geos-chem/issues/1511 Bug fix for TOMAS sulfate production rates]
−
*Includes HMS rxns via KPP
+
|Betty Croft (Dalhousie)
−
|Mike Long (GCST)<br>Viral Shah (Harvard)<br>Bob Yantosca (GCST)
+
|TOMAS
−
|Chemistry &<br>Structural
+
|Simple
−
|Difficult
+
 
|
 
|
−
* [https://github.com/geoschem/geos-chem/pull/1054 geoschem/geos-chem PR #1054]
+
*[https://github.com/geoschem/geos-chem/pull/1569 geos-chem PR #1569]
−
*Currently Undergoing validation
+
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry in KPP]
+
|Update surface methane boundary condition using NOAA flask data
−
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)<br>Mike Long (GCST)<br>Bob Yantosca (GCST)
+
|Lee Murray (Rochester)
−
|Chemistry
+
|Input data
−
|Medium
+
|Simple
 
|
 
|
−
* [https://github.com/geoschem/geos-chem/pull/1063 geoschem/geos-chem PR #1063]
+
*[https://github.com/geoschem/geos-chem/issues/1626 geos-chem issue #1626]
−
*Currently in testing
+
  
 
|-valign="top"
 
|-valign="top"
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|[https://doi.org/10.5194/acp-2021-911 Updated Global Inventory of Methane Emissions from Oil/Gas/Coal (GFEI v2)]
+
|Include nitrate (NIT + NITs) in Ox family
−
|Tia Scarpelli (U. Edinburgh)
+
|Melissa Sulprizio (Harvard)
−
|Emissions
+
|Chemistry<br>Diagnostics
−
|Easy
+
|Simple
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/issues/1043 geoschem/geos-chem #1043]
 
−
*Reference: Scarpelli et al [2021],<br>DOI: [https://doi.org/10.5194/acp-2021-911 10.5194/acp-2021-911]
 
−
 
  
 
|-valign="top"
 
|-valign="top"
−
|Anthropogenic Methane Emission Inventory for Canada
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|GCHP carbon simulation
−
|Tia Scarpelli (U. Edinburgh)
+
|Bob Yantosca (Harvard)
−
|Emissions
+
|Carbon
−
|Easy
+
|Medium
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/issues/1072 geoschem/geos-chem #1072]
+
*[https://github.com/geoschem/GCHP/issues/339 geos-chem Issue #339]
−
*Reference: Scarpelli, T.R., D.J. Jacob, M. Moran, F. Reuland, and D. Gordon, [https://acmg.seas.harvard.edu/files/acmg/files/scarpelli2021_canada.pdf A gridded inventory of Canada's anthropogenic methane emissions], submitted to Environ. Res. Lett., 2021.
+
  
 
|-valign="top"
 
|-valign="top"
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|[https://edgar.jrc.ec.europa.eu/dataset_ghg60 Use EDGARv6 global anthro emissions for CH4 simulation]
+
|GEOS-IT meteorology
−
|Melissa Sulprizio (GCST)
+
|Lizzie Lundgren (Harvard)
−
|Emissions
+
|New meteorology option
 
|Medium
 
|Medium
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/issues/1044 geoschem/geos-chem #1044]
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*[https://github.com/geoschem/geos-chem/pull/1848 geos-chem PR #1848]
−
*[https://edgar.jrc.ec.europa.eu/dataset_ghg60 Link to EDGAR data]
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
+
|Cloud-J for computing photolysis rates
−
|Melissa Sulprizio (GCST)
+
|Lizzie Lundgren (Harvard)
−
|Emissions
+
|Photolysis
−
|Easy
+
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/1522 geos-chem PR #1848]
 +
*[https://github.com/geoschem/GCClassic/pull/27 gcclassic PR #27]
  
 
|-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]
+
|Mass flux regridding fix in MAPL
−
|Lee Murray (Rochester)<br>Melissa Sulprizio (GCST)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
−
|Emissions
+
|GCHP input regridding
−
|Easy
+
|Medium
 
|
 
|
 +
*[https://github.com/GEOS-ESM/MAPL/pull/2056 GEOS-ESM/MAPL PR #2056]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/pull/990 Change State_Chm%Species from 4D to vector of 3D arrays]
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|Improve pressure level computation for GCHP advection
−
|Lizzie Lundgren (GCST)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
−
|Structural
+
|GCHP advection
 
|Medium
 
|Medium
 
|
 
|
−
*Ongoing
 
  
 
|-valign="top"
 
|-valign="top"
−
|Upgrade Fast-JX to Cloud-J
+
|GCHP advection diagnostics
−
|Lizzie Lundgren (GCST)
+
|Lizzie Lundgren (Harvard)
−
|Structural
+
|GCHP diagnostics
−
|Difficult
+
|Medium
 
|
 
|
−
* [https://github.com/geoschem/cloud-j geoschem/cloud-j]
 
−
*Ongoing
 
  
−
|-valign="top"
 
−
|Add capability to use mass fluxes in advection
 
−
|Sebastian Eastham (MIT) <br> Liam Bindle (GCST)
 
−
|Transport
 
−
|Easy
 
−
|
 
−
*[https://github.com/geoschem/GCHP/pull/172 geoschem/GCHP PR #172]
 
−
*GCHP only
 
 
|}
 
|}
  
−
== Feature integration in the queue ==
+
== Prioritized and in the queue ==
  
−
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 prioritized for integration into GEOS-Chem in the near future.
  
 
{| 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="100px"|Delivery status
 
!width="300px"|Notes and References
 
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
+
|New version of CEDS at 0.1 deg
−
|Sam Silva (MIT)
+
|Dandan Zhang (WashU)
 
|Emissions
 
|Emissions
−
|Medium
+
|Simple
 +
|Delivered<br>Apr 2023
 
|
 
|
−
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
+
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
−
*Based off 12.3.0, looking for assistance from the community for upgrading to GC 13
+
 
 +
|-valign="top
 +
|Update volcano emissions through 2022
 +
|Melissa Sulprizio (Harvard)
 +
|Emissions
 +
|Simple
 +
|Delivered<br>Sep 2023
 +
|
 +
*https://gmao.gsfc.nasa.gov/gmaoftp/geoscf/volcano_so2/v202302/
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
+
|KORUS-AQ emissions for East Asia (as an option)
−
|Sam Silva (MIT)
+
|Katie Travis (NASA)
−
|Emissions &<br>Science
+
|Emissions
−
|Medium
+
|Simple
 +
|Delivered<br>Apr 2023
 
|
 
|
−
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
 
−
*Based off 12.3.0, looking for assistance from the community for upgrading to GC 13
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
|Specialty simulation
+
|Emissions
−
|Medium
+
|Simple
 +
|Delivered<br>Jul 2022
 
|
 
|
−
* [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
 
−
*Ideally implemented as a chemical mechanism in KPP
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
+
|ALK4 & R4N2 chemistry
−
|Mike Long (Harvard) <br> Haipeng Lin (Harvard)  
+
|Jared Brewer (UMN)
 
|Chemistry
 
|Chemistry
−
|Difficult
+
|TBD
 +
|Not delivered
 
|
 
|
−
*In testing
+
*[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., submitted 2023.]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/770 Output satellite diagnostics as NetCDF]
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
−
|Eloise Marais (UCL)  
+
|Haihui Zhu (WashU)
−
|Diagnostics
+
|Aerosols
−
|Easy
+
|Simple
 +
|Delivered<br>Aug 2023
 
|
 
|
 +
*[https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1292/ Zhu et al., EGUsphere, submitted 2023.]
 +
*[https://github.com/geoschem/geos-chem/pull/1902 geos-chem PR #1902]
  
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
 +
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
 +
|Emissions
 +
|TBD
 +
|Not delivered
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
 +
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/1928 Updated 0.1x0.1 timezone file accounting for daylight savings]
 +
|Karn Vohra (UCL)
 +
|Emissions
 +
|Simple
 +
|Not delivered
 +
|
 +
 +
|-valign="top"
 +
|Bug fix for dry deposition to snow and ice
 +
|Ryan Pound (York)
 +
|Dry deposition
 +
|Simple
 +
|Delivered (Nov 2023)
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2045 geos-chem PR #2045]
 +
 +
 +
|-valign="top"
 +
|Bug fix for application of FRSNO in land cover arrays
 +
|Ryan Pound (York)
 +
|Dry deposition
 +
|Simple
 +
|Delivered (Nov 2023)
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2046 geos-chem PR #2046]
  
 
|}
 
|}
  
−
== Feature integration not yet prioritized ==
+
== Ready to go in ==
  
−
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 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 and References
 
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
+
|Geologic emission of ethane and propane
−
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
+
|Matthew Rowlinson and Mat Evans(York)
−
|Chemistry
+
|Emissions
−
|Medium
+
|Delivered<br>Jan 2023
 
|
 
|
−
*Delivered to GCST (Jun 2020)
+
*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"
−
|[https://gmd.copernicus.org/articles/13/1137/2020/ GC-YIBs biosphere-atmospheric chemistry coupled model]
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
|Xu Yue (NUIST)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
−
|Easy
+
|Delivered<br>Feb 2021
 
|
 
|
−
* [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
+
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
−
|Science
+
|Emissions
−
|Easy
+
|Delivered<br>Jul 2021
 
|
 
|
−
*Delivered to GCST (Feb 2021)
+
*Data involves many files- need to think about temporal frequency
−
* [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]]
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
−
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
+
|Shixian Zhai (Harvard)
 +
|Emissions
 +
|Delivered
 +
|
 +
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
 +
 
 +
|-valign="top"
 +
|[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
 
|Chemistry
−
|Easy
+
|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"
−
|Landcover/Fire Emissions Offline LPJlmfire
+
|[https://github.com/geoschem/geos-chem/pull/1983 Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition]
−
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
+
|Yanshun Li (WashU)
−
|Emissions
+
|Aerosols
−
|Easy
+
|Delivered<br>Oct 2023
 +
|
 +
*[https://acp.copernicus.org/articles/23/12525/2023/acp-23-12525-2023.html Li et al., ACP, 2023.]
 +
*[https://github.com/geoschem/geos-chem/pull/1983 geos-chem PR #1983]
 +
 
 +
|-valign="top"
 +
|DMS Chemistry
 +
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 +
|Chemistry
 +
|Not delivered
 +
|
 +
 
 +
|-valign="top"
 +
|Organic acids (RCOOH)
 +
|Katie Travis (NASA)
 +
|Chemistry
 +
|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
 
|
 
|
−
*Data files delivered to GCST (July 2021)
 
  
 
|}
 
|}
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|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
+
|Replace ISORROPIA with [https://gmd.copernicus.org/preprints/gmd-2023-159/gmd-2023-159.pdf HTEPv1.0]
−
|Chris Holmes (FSU)
+
|Seb Eastham (MIT)<br>Lizzie Lundgren (Harvard)
 +
|Aerosol thermodynamics
 +
|
 +
*Will be git submodule
 +
 
 +
|-valign="top"
 +
|PPN+hv, PPN+OH
 +
|Robert Ryan (UCL)
 
|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]
+
|MBO
−
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
+
|Michael Vermeuel (UMN)
−
|Emissions
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
+
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
−
|Hongjian Weng (PKU)
+
|Seb Eastham (MIT)
−
|Emissions
+
|Science
 
|
 
|
−
*Identified as a priority for GC 13, but not yet delivered
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions|Updated offline sea salt emissions]]
+
|Initial conditions for CH4 correcting background and stratospheric biases
−
|Hongjian Weng (PKU)
+
|Todd Mooring (Harvard)
−
|Emissions
+
|Methane simulation
 
|
 
|
−
*Identified as a priority for GC 13, but not yet delivered
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Hongjian Weng (PKU)
+
|Bob Yantosca (Harvard)
−
|Emissions
+
|Aerosols<br>Structural
 
|
 
|
−
*Identified as a priority for GC 13, but not yet delivered
+
*Ongoing
  
 
|-valign="top"
 
|-valign="top"
−
|Provide recommended rather than hard-coded scaling factors for online emissions
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
|GCST
+
|Betty Croft (Dalhousie)
−
|Emissions
+
|Aerosols
 
|
 
|
−
*Identified as a priority for GC 13, but not yet developed
 
  
 
|-valign="top"
 
|-valign="top"
−
|Diagnostic to archive XCO2, XCO, and XCH4
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
−
|Dylan Jones (Toronto)
+
|Betty Croft (Dalhousie)
−
|Diagnostic
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
+
|ML algorithms for bulk aerosols
−
|Kazu Miyazaki (JPL)
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
−
|Input data
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|BrC aging
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
−
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
+
|Shixian Zhai (Harvard)
−
|Chemistry
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Shared Socioeconomic Pathways Emission Inventories
+
|Updates to Hodzic SOA scheme
−
|Hong Liao (NUIST)
+
|Jared Brewer (Harvard)
−
|Emissions
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Rediagnosis of RAS convection in GEOS-Chem
+
|Automated reduction in isoprene scheme
−
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
+
|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
 
|Convection
 
|
 
|
−
*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
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
−
|Sebastian Eastham (MIT) <br> Liam Bindle (GCST)
+
|Jintai Lin (PKU)
−
|Transport
+
|Emissions
 
|
 
|
−
*Identified as a priority for GC 13, but not yet delivered
+
*Horizontal resolution: 5km, temporal resolution: JJA mean
−
*GCHP only
+
*monthly data will be available at a later stage; please contact us
  
 
|-valign="top"
 
|-valign="top"
−
|HTAPv3 emissions (0.1 deg, 2002-2018)
+
|Updated biomass burning emission factors and species
−
|Emissions & Deposition WG
+
|Tess Carter (MIT)
 
|Emissions
 
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
+
|Updated offline sea salt emissions
−
|GCST
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
−
|Chemistry
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updated parameterization of aerosol size distribution for bulk aerosol simulations
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
−
|Haihui Zhu (WashU)<br>Shixian Zhai (Harvard)
+
|Sam Silva (MIT)
−
|Aerosols
+
|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
 
|
 
|
  
Line 366: Line 515:
  
 
|-valign="top"
 
|-valign="top"
−
|Methylethylketone chemistry
+
|Snow / Icy Bromine
−
|Jared Brewer (CSU)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Add sulfate dependence to SOA yield from isoprene in simple SOA
+
|Monoterpene oxidation scheme
 +
|Jessica Haskins (MIT)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Fire related VOCs including furans
 +
|Lu Hu (UMT)<br>Lixu Jin (UMT)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Extension of UCX into the mesosphere
 +
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Methane flux ingestion
 
|Eloise Marais (UCL)
 
|Eloise Marais (UCL)
 
|Chemistry
 
|Chemistry
Line 378: Line 545:
  
 
|-valign="top"
 
|-valign="top"
−
|GTMM updates
+
|Dust non-sphericity impacts on surface chem and optical properties
−
|Ben Geyman (Harvard)
+
|Inderjeet Singh (WashU)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Size-resolved stratospheric aerosol
 +
|Seb Eastham (MIT)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Extend aerosol settling
 +
|Eloise Marais (UCL)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Stratospheric aerosol APM
 +
|Fangqun Yu (SUNY)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Plume-in-grid model
 +
|Hongwei Sun (Harvard)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
 +
|Lee Murray (Rochester)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Seb aircraft emissions beyond recent 2019 update
 +
|Seb Eastham (MIT)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|FRP-based fire emsisions for eastern US at 0.2 deg
 +
|Charlie Fite (FSU)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Hg iodine chemistry
 +
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
 
|Hg simulation
 
|Hg simulation
 
|
 
|
  
 +
|-valign="top"
 +
|Hg simulation in GCHP
 +
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
 +
|Hg simulation
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
−
|Christoph Keller (NASA GMAO)
+
|Yanxu Zhang (Nanjing U.)
−
|Transport Tracer simulation
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Streamlining of specialty simulations through HEMCO and KPP
+
|Dry deposition diagnostics by land cover
−
|GCST
+
|Holly Nowell (FSU)
−
|Chemistry, Specialty simulations
+
|Diagnostics
 +
|
 +
 
 +
|-valign="top"
 +
|Dry deposition process diagnostics
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
 +
 
 +
|-valign="top"
 +
|Isotope simulation for CO and CH4 in GCHP
 +
|Lee Murray (Rochester)
 +
|Carbon simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
 +
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
 +
|Emissions<br>CH4 simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Modularization of aerosols code for interface with GOCART in GEOS
 +
|Christoph Keller (GMAO)
 +
|Structural
 +
|
 +
 
 +
|-valign="top"
 +
|Improve load balancing in GCHP
 +
|Seb Eastham (MIT)
 +
|Model performance
 +
|
 +
 
 +
|-valign="top"
 +
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
 +
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
 +
|Transport
 +
|
 +
 
 +
|-valign="top"
 +
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
 +
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
 +
|Transport
 +
|
 +
 
 +
|-valign="top"
 +
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
 +
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
 +
|Transport
 
|
 
|
  
Line 401: Line 669:
  
 
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 409: Line 678:
  
 
|-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 15:04, 27 November 2023

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 14.3.0

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
TOMAS in GCHP Betty Croft (Dalhousie) TOMAS Simple
Bug fix for TOMAS sulfate production rates Betty Croft (Dalhousie) TOMAS Simple
Update surface methane boundary condition using NOAA flask data Lee Murray (Rochester) Input data Simple
Include nitrate (NIT + NITs) in Ox family Melissa Sulprizio (Harvard) Chemistry
Diagnostics 		Simple
GCHP carbon simulation Bob Yantosca (Harvard) Carbon Medium
GEOS-IT meteorology Lizzie Lundgren (Harvard) New meteorology option Medium
Cloud-J for computing photolysis rates Lizzie Lundgren (Harvard) Photolysis Medium
Mass flux regridding fix in MAPL Lizzie Lundgren (Harvard)
Seb Eastham (MIT) 		GCHP input regridding Medium
Improve pressure level computation for GCHP advection Lizzie Lundgren (Harvard)
Seb Eastham (MIT) 		GCHP advection Medium
GCHP advection diagnostics Lizzie Lundgren (Harvard) GCHP 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
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple Delivered
Apr 2023
Update volcano emissions through 2022 Melissa Sulprizio (Harvard) Emissions Simple Delivered
Sep 2023
KORUS-AQ emissions for East Asia (as an option) Katie Travis (NASA) Emissions Simple Delivered
Apr 2023
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech) 		Emissions Simple Delivered
Jul 2022
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry TBD Not delivered
Parameterization of SNA and OM dry size Haihui Zhu (WashU) Aerosols Simple Delivered
Aug 2023
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions TBD Not delivered


Updated 0.1x0.1 timezone file accounting for daylight savings Karn Vohra (UCL) Emissions Simple Not delivered
Bug fix for dry deposition to snow and ice Ryan Pound (York) Dry deposition Simple Delivered (Nov 2023)


Bug fix for application of FRSNO in land cover arrays Ryan Pound (York) Dry deposition Simple Delivered (Nov 2023)

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
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
MEIC (China regional) for 2000-2017 at 0.5x0.625 deg Shixian Zhai (Harvard) Emissions Delivered
  • Need permission from Qiang Zhang (Tsinghua U.) to distribute data
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN) 		Chemistry Delivered
June 2023
Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition Yanshun Li (WashU) Aerosols Delivered
Oct 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
Replace ISORROPIA with HTEPv1.0 Seb Eastham (MIT)
Lizzie Lundgren (Harvard) 		Aerosol thermodynamics
  • Will be git submodule
PPN+hv, PPN+OH Robert Ryan (UCL) Chemistry
MBO Michael Vermeuel (UMN) Chemistry
Stratospheric adjustment with RRTMG in GEOS-Chem Seb Eastham (MIT) Science
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
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