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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+
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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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+
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== 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"
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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"|'''[[GEOS-Chem 13.2.1]]'''
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|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
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|align="center"|'''[[GEOS-Chem 13.2.0]]'''
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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]].  
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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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!width="100px"|Model scope
 
!width="100px"|Model scope
 
!width="100px"|Ease of implementation
 
!width="100px"|Ease of implementation
−
!width="300px"|Notes
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!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/547 Update US emissions to NEI2016] (as option)
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|TOMAS in GCHP
−
|Barron Henderson (EPA)<br>Lyssa Freese (MIT)
+
|Betty Croft (Dalhousie)
−
|Emissions
+
|TOMAS
−
|Easy
+
|Simple
 
|
 
|
−
*Files available at [ftp://newftp.epa.gov/Air/aqmg/global/NEI2016fh/ this ftp site]. Barron writes, "They have not yet been used in a publication, so I caution users to look for anything and report back."
+
*[https://github.com/geoschem/GCHP/pull/221 GCHP PR #221]
 +
*[https://github.com/geoschem/geos-chem/pull/1261 geos-chem PR #1261]
 +
*[https://github.com/geoschem/HEMCO/pull/145 geoschem/HEMCO PR #145]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/pull/459 Updates to enable automated run directory creation]
+
|[https://github.com/geoschem/geos-chem/issues/1511 Bug fix for TOMAS sulfate production rates]
−
|Liam Bindle (GCST)<br>Melissa Sulprizio (GCST)
+
|Betty Croft (Dalhousie)
−
|Run directory
+
|TOMAS
 +
|Simple
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/1569 geos-chem PR #1569]
 +
 
 +
|-valign="top"
 +
|Update surface methane boundary condition using NOAA flask data
 +
|Lee Murray (Rochester)
 +
|Input data
 +
|Simple
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/1626 geos-chem issue #1626]
 +
 
 +
|-valign="top"
 +
|Include nitrate (NIT + NITs) in Ox family
 +
|Melissa Sulprizio (Harvard)
 +
|Chemistry<br>Diagnostics
 +
|Simple
 +
|
 +
 
 +
|-valign="top"
 +
|GCHP carbon simulation
 +
|Bob Yantosca (Harvard)
 +
|Carbon
 
|Medium
 
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/GCHP/issues/339 geos-chem Issue #339]
  
 
|-valign="top"
 
|-valign="top"
−
|Upgrade Fast-J to Cloud-J
+
|GEOS-IT meteorology
−
|Lizzie Lundgren (GCST)
+
|Lizzie Lundgren (Harvard)
−
|Structural
+
|New meteorology option
−
|Difficult
+
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/1848 geos-chem PR #1848]
  
 
|-valign="top"
 
|-valign="top"
−
|Migrating sulfate chemistry into KPP
+
|Cloud-J for computing photolysis rates
−
|Mike Long (GCST)
+
|Lizzie Lundgren (Harvard)
−
|Chemistry &<br>Structural
+
|Photolysis
−
|Difficult
+
|Medium
 
|
 
|
−
* Also includes Moch et al HMS chemistry
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*[https://github.com/geoschem/geos-chem/pull/1522 geos-chem PR #1848]
−
* Also includes C2H4 and C2H2 chemistry
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*[https://github.com/geoschem/GCClassic/pull/27 gcclassic PR #27]
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/publications/2020/moch_2020_hms_global.pdf HMS chemistry]
+
|Mass flux regridding fix in MAPL
−
|Jonathan Moch (Harvard)<br>Mike Long (GCST)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
−
|Chemistry
+
|GCHP input regridding
−
|Easy
+
|Medium
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/pull/456 geoschem/geos-chem PR #456]
+
*[https://github.com/GEOS-ESM/MAPL/pull/2056 GEOS-ESM/MAPL PR #2056]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/560 C2H4 and C2H2 chemistry]
+
|Improve pressure level computation for GCHP advection
−
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)<br>Mike Long (GCST)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
−
|Chemistry
+
|GCHP advection
−
|Easy
+
|Medium
 
|
 
|
−
*Includes adding C2H4 and C2H2 as advected species with emissions
 
−
*See [https://github.com/geoschem/geos-chem/pull/813 geoschem/geos-chem PR #813]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2020JD033439 CH3O2 + OH reaction]
+
|GCHP advection diagnostics
−
|Kelvin Bates (Harvard)
+
|Lizzie Lundgren (Harvard)
−
|Chemistry
+
|GCHP diagnostics
−
|Easy
+
|Medium
 
|
 
|
−
*Reaction stoichiometry and rate constant in KPP
+
 
−
*See [https://github.com/geoschem/geos-chem/pull/814 geoschem/geos-chem PR #814]
+
|}
 +
 
 +
== 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"
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|Cleaning up heterogeneous chemistry reaction rate computations
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|New version of CEDS at 0.1 deg
−
|Bob Yantosca (GCST)
+
|Dandan Zhang (WashU)
−
|Chemistry &<br>Structural
+
|Emissions
−
|Difficult
+
|Simple
 +
|Delivered<br>Apr 2023
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
 +
 
 +
|-valign="top
 +
|Update volcano emissions through 2022
 +
|Melissa Sulprizio (Harvard)
 +
|Emissions
 +
|Simple
 +
|Delivered<br>Sep 2023
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/pull/817 geoschem/geos-chem PR #817]
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*https://gmao.gsfc.nasa.gov/gmaoftp/geoscf/volcano_so2/v202302/
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/HEMCO/issues/92 Avoid double counting of acetone source from monoterpenes when using online MEGAN]
+
|KORUS-AQ emissions for East Asia (as an option)
−
|Dylan Millet (UMN)
+
|Katie Travis (NASA)
 
|Emissions
 
|Emissions
−
|Easy
+
|Simple
 +
|Delivered<br>Apr 2023
 
|
 
|
−
*See [https://github.com/geoschem/HEMCO/pull/93 geoschem/HEMCO PR #93]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry in KPP]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)<br>Mike Long (Harvard)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
|Chemistry
+
|Emissions
−
|Medium
+
|Simple
 +
|Delivered<br>Jul 2022
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/preprints/acp-2021-605/ Aromatic VOC chemistry]
+
|ALK4 & R4N2 chemistry
−
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)<br>Mike Long (Harvard)
+
|Jared Brewer (UMN)
 
|Chemistry
 
|Chemistry
−
|Medium
+
|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., submitted 2023.]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/14/4249/2021/gmd-14-4249-2021.html Updated offline dust emissions from Meng et al. (2021)]
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
−
|Jun Meng (WUStL)<br>Yanshun Li (WUStL)
+
|Haihui Zhu (WashU)
−
|Emissions
+
|Aerosols
−
|Easy
+
|Simple
 +
|Delivered<br>Aug 2023
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/pull/816 geoschem/geos-chem PR #816]
+
*[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"
 
|-valign="top"
−
|GEOS updates
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|Christoph Keller (GMAO)<br>Lizzie Lundgren (GCST)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
−
|GEOS
+
|Emissions
−
|Medium (ongoing)
+
|TBD
 +
|Not delivered
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC updates
+
|[https://github.com/geoschem/geos-chem/issues/1928 Updated 0.1x0.1 timezone file accounting for daylight savings]
−
|Thibaud Fritz (MIT)<br>Lizzie Lundgren (GCST)
+
|Karn Vohra (UCL)
−
|CESM
+
|Emissions
−
|Medium (ongoing)
+
|Simple
 +
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|GMAO library version updates
+
|Bug fix for dry deposition to snow and ice
−
|Tom Clune (GMAO)<br>Ben Auer (GMAO)<br>Atanas Trayanov<br>GCST
+
|Ryan Pound (York)
−
|GCHP
+
|Dry deposition
−
|Medium (ongoing)
+
|Simple
 +
|Delivered (Nov 2023)
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/2045 geos-chem PR #2045]
 +
  
 
|-valign="top"
 
|-valign="top"
−
|GCHP Adjoint updates
+
|Bug fix for application of FRSNO in land cover arrays
−
|Colin Lee (Wash U.)
+
|Ryan Pound (York)
−
|GCHP Adjoint
+
|Dry deposition
−
|Medium (ongoing)
+
|Simple
 +
|Delivered (Nov 2023)
 
|
 
|
−
*See [https://github.com/geoschem/MAPL/pull/12 geoschem/MAPL PR #12]
+
*[https://github.com/geoschem/geos-chem/pull/2046 geos-chem PR #2046]
  
 
|}
 
|}
  
−
== Ongoing feature integration ==
+
== Ready to go in ==
  
−
Features listed in this table are in progress and work is ongoing. Updates are continuously added to the standard model as they are available.
+
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"
−
|GCHP Adjoint
+
|Geologic emission of ethane and propane
−
|Colin Lee (CU Boulder)<br>Daven Henze (CU Boulder)
+
|Matthew Rowlinson and Mat Evans(York)
−
|Structural
+
|Emissions
 +
|Delivered<br>Jan 2023
 
|
 
|
 +
*Global source from https://doi.org/10.1038/s41561-018-0073-0 with spatial distribution from https://doi.org/10.5194/essd-11-1-2019
 +
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
 +
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 +
|Science
 +
|Delivered<br>Feb 2021
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|Sebastian Eastham (MIT)<br>Thibauld Fritz (MIT)<br>Haipeng Lin (Harvard)<br>Lizzie Lundgren (Harvard)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
−
|Structural
+
|Emissions
 +
|Delivered<br>Jul 2021
 
|
 
|
 +
*Data involves many files- need to think about temporal frequency
 +
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/550 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
  
−
|}
+
|-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
 +
|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
  
−
== Feature integration in the queue ==
+
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/pull/1983 Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition]
 +
|Yanshun Li (WashU)
 +
|Aerosols
 +
|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]
  
−
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.
+
|-valign="top"
 +
|DMS Chemistry
 +
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 +
|Chemistry
 +
|Not delivered
 +
|
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|-bgcolor="#CCCCCC"
+
|Organic acids (RCOOH)
−
!width="200px"|Feature
+
|Katie Travis (NASA)
−
!width="200px"|Contributor(s)
+
|Chemistry
−
!width="100px"|Model scope
+
|Not delivered
−
!width="100px"|Ease of implementation
+
|
−
!width="300px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/21/1861/2021/ Updated Rn-222 emissions]
+
|Improve carbon & nitrogen conservation in reactions
−
|Bo Zhang
+
|Kelvin Bates (Harvard)
−
|Emissions
+
|Chemistry
−
|Easy
+
|Not delivered
 
|
 
|
−
*Existing Rn emissions will remain as an option
 
−
*Original data at https://doi.org/10.5281/zenodo.3942287
 
−
*Waiting for data submission in NetCDF format
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/331 Climatologies for lightning NOx]
+
|Blowing snow sea salt in TOMAS
−
|Lee Murray (Rochester)
+
|Betty Croft (Dalhousie)
−
|Emissions
+
|Aerosols
−
|Easy
+
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.pnas.org/content/117/42/26076 Updated aerosol dry deposition]
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
−
|Jeff Pierce (CSU)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
−
|Dry deposition
+
|Hg simulation
−
|Easy
+
|Not delivered
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/604 geoschem/geos-chem #604]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://doi.org/10.5194/acp-2021-441 Updates to IONO2 hydrolysis from Wang et al. (2021)]
+
|WRF-GC Hg simulation
−
|Tomas Sherwen (York)
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
−
|Chemistry
+
|Hg simulation<br>WRF-GC
−
|Medium
+
|Not delivered
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/pull/719 geoschem/geos-chem PR #719]
 
−
*Needs to be merged with Bob Yantosca's gckpp_HetRates.F90 updates slated for 13.3.0
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
+
|Updated HgII gas-partical partitioning
−
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
+
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
−
|Specialty simulation
+
|Hg simulation
−
|Medium
+
|Not delivered
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
+
*Should be option, not default
−
*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)
+
|Dry deposition to F90 (readability)
−
|Lu Shen (Harvard)
+
|Chris Holmes (FSU)
−
|Chemistry
+
|Dry deposition
−
|Difficult
+
|Not delivered
 
|
 
|
−
*Needs to be merged with Bob Yantosca's gckpp_HetRates.F90 updates slated for 13.3.0
 
  
 
|}
 
|}
  
−
== 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"
 +
|Replace ISORROPIA with [https://gmd.copernicus.org/preprints/gmd-2023-159/gmd-2023-159.pdf HTEPv1.0]
 +
|Seb Eastham (MIT)<br>Lizzie Lundgren (Harvard)
 +
|Aerosol thermodynamics
 +
|
 +
*Will be git submodule
  
 
|-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/13/2569/2020/ MEGAN3]
+
|MBO
−
|Sam Silva (MIT)
+
|Michael Vermeuel (UMN)
−
|Emissions
+
|Chemistry
−
|Medium
+
 
|
 
|
−
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/17/3699/2017/ GC-YIBs biosphere-atmospheric chemistry coupled model]
+
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
−
|Xu Yue (NUIST)
+
|Seb Eastham (MIT)
 
|Science
 
|Science
−
|Easy
 
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/presentations/IGC9/posters/Tue_Posters_lam_joey.pdf 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"
−
|Archived CMIP6 Met Products for GEOS-Chem Input
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
|Lee Murray (Rochester)
+
|Betty Croft (Dalhousie)
−
|Input data
+
|Aerosols
−
|Easy
+
|
 +
 
 +
|-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
 
|
 
|
−
*See updates from [http://acmg.seas.harvard.edu/geos/word_pdf_docs/steering_cmte/gc_sc_minutes_24Feb2021.pdf Feb 2021 GCSC meeting]
 
−
*Official announcement coming soon
 
  
 
|-valign="top"
 
|-valign="top"
−
|Landcover/Fire Emissions Offline LPJlmfire
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
−
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
+
|Jintai Lin (PKU)
 +
|Emissions
 +
|
 +
*Horizontal resolution: 5km, temporal resolution: JJA mean
 +
*monthly data will be available at a later stage; please contact us
 +
 
 +
|-valign="top"
 +
|Updated biomass burning emission factors and species
 +
|Tess Carter (MIT)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Updated offline sea salt emissions
 +
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
 
|Emissions
 
|Emissions
−
|Easy
 
 
|
 
|
−
*Data files delivered to GCST (July 2021)
 
  
 
|-valign="top"
 
|-valign="top"
 
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
 
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
 
|Sam Silva (MIT)
 
|Sam Silva (MIT)
−
|Science
+
|Emissions &<br>Science
−
|Medium
+
|
 +
*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
 
|
 
|
−
*Code is available at https://zenodo.org/record/3614062
 
  
 
|}
 
|}
  
−
== 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 341: Line 512:
 
!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"
 +
|Fire related VOCs including furans
 +
|Lu Hu (UMT)<br>Lixu Jin (UMT)
 +
|Chemistry
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://iopscience.iop.org/article/10.1088/1748-9326/ac16a3 New soil NOx parameterization]
+
|Extension of UCX into the mesosphere
−
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
−
|Emissions
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
+
|Methane flux ingestion
−
|Hongjian Weng (PKU)
+
|Eloise Marais (UCL)
−
|Emissions
+
|Chemistry
 
|
 
|
−
*Identified as a priority for GC 13, but not yet delivered
 
−
*Waiting on updated MODIS LAI data
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions|Updated offline sea salt 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"
−
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
+
|Size-resolved stratospheric aerosol
−
|Hongjian Weng (PKU)
+
|Seb Eastham (MIT)
−
|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
+
|Extend aerosol settling
−
|GCST
+
|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
 
|Emissions
 
|
 
|
−
*Identified as a priority for GC 13, but not yet developed
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for volcano emissions]
+
|Seb aircraft emissions beyond recent 2019 update
−
|GCST
+
|Seb Eastham (MIT)
 
|Emissions
 
|Emissions
 
|
 
|
−
*Identified as a priority for GC 13, but not yet developed
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
+
|FRP-based fire emsisions for eastern US at 0.2 deg
−
|GCST
+
|Charlie Fite (FSU)
 
|Emissions
 
|Emissions
 
|
 
|
−
*Identified as a priority for GC 13, but not yet developed
 
  
 
|-valign="top"
 
|-valign="top"
−
|Diagnostic to archive XCO2, XCO, and XCH4
+
|Hg iodine chemistry
−
|Dylan Jones (Toronto)
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
−
|Diagnostic
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
+
|Hg simulation in GCHP
−
|Kazu Miyazaki (JPL)
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
−
|Input data
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|BrC aging
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
−
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
+
|Yanxu Zhang (Nanjing U.)
−
|Chemistry
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Shared Socioeconomic Pathways Emission Inventories
+
|Dry deposition diagnostics by land cover
−
|Hong Liao (NUIST)
+
|Holly Nowell (FSU)
−
|Emissions
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Rediagnosis of RAS convection in GEOS-Chem
+
|Dry deposition process diagnostics
−
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
+
|Holly Nowell (FSU)
−
|Convection
+
|Diagnostics
 
|
 
|
−
*Work is finished and a manuscript is in preparation.
 
  
 
|-valign="top"
 
|-valign="top"
−
|Read-in of native GEOS output
+
|Isotope simulation for CO and CH4 in GCHP
−
|WUStL GCST
+
|Lee Murray (Rochester)
−
|Input data
+
|Carbon simulation
 
|
 
|
−
*GCHP only
 
  
 
|-valign="top"
 
|-valign="top"
−
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
−
|Sebastian Eastham (MIT)
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
−
|Transport
+
|Emissions<br>CH4 simulation
 
|
 
|
−
*Identified as a priority for GC 13, but not yet delivered
 
−
*GCHP only
 
  
 
|-valign="top"
 
|-valign="top"
−
|Add capability to read mass fluxes for use in advection
+
|Modularization of aerosols code for interface with GOCART in GEOS
−
|Sebastian Eastham (MIT)
+
|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
 
|Transport
 
|
 
|
−
*Identified as a priority for GC 13, but not yet delivered
 
−
*GCHP only
 
  
 
|-valign="top"
 
|-valign="top"
−
|HTAPv3 emissions (0.1 deg, 2002-2018)
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
−
|Emissions & Deposition WG
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
−
|Emissions
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
+
|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
+
|Transport
 
|
 
|
  
 
|}
 
|}
  
−
== Over the horizon (6-12 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 6-12 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
Line 478: Line 675:
 
!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"
−
|Methylethylketone chemistry
+
|Updates to Aromatic chemistry
−
|Jared Brewer (CSU)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Add sulfate dependence to SOA yield from isoprene in simple SOA
+
|Nitrate photolysis
−
|Eloise Marais (Leicester)
+
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|GTMM updates
+
|In aerosol chemistry Halogens
−
|Ben Geyman (Harvard)
+
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
−
|Hg simulation
+
|Chemistry
 
|
 
|
−
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
+
|Benchmark box model of GC Chemistry
−
|Christoph Keller (NASA GMAO)
+
|Katie Travis (NASA)
−
|Transport Tracer simulation
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Streamlining of specialty simulations through HEMCO and KPP
+
|Alkyl nitrates Alk7, PHAN
−
|GCST
+
|Katie Travis (NASA)
−
|Chemistry, Specialty simulations
+
|Chemistry
 
|
 
|
−
 
−
|}
 
−
 
−
== 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
 
−
|- bgcolor="#cccccc"
 
−
!width="200px"|Feature
 
−
!width="200px"|Contributor(s)
 
−
!width="100px"|Model scope
 
−
!width="420px"|Notes
 
  
 
|-valign="top"
 
|-valign="top"
−
|Implement isotope simulation for CO and CH4 in GCHP
+
|Add stratospheric ozone species to full-chemistry simulations
 
|Lee Murray (Rochester)
 
|Lee Murray (Rochester)
−
|Specialty simulation
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Migrate LETFK DA scheme to GCHP
+
|Perchlorate chemistry
−
|Kazu Miyazaki (JPL)
+
|Yuk Chun Chan (UWAB)
−
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Super fast chemistry scheme
+
|Explicit heterogeneous sulfate chemistry
−
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
 
|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
+
|HOx and ozone "emissions" from lightning as option in model to play with
−
|Becky Alexander (UW)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
−
|Aerosols
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|DMS oxidation scheme updating
+
|Sea salt aerosol from sea ice leads
−
|Becky Alexander (UW)<br>Qianjie Chen (UW)
+
|Hannah Horowitz (U. Illinois)
−
|Chemistry
+
|Emissions
 
|
 
|
−
*Delayed - implemented pre-KPP
 
−
*Currently bring implemented in KPP by UC Riverside group
 
  
 
|-valign="top"
 
|-valign="top"
−
|Heterogeneous sulfate production
+
|Drought-stress algorithm
−
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Wei Li (U. Houston)
−
|Chemistry
+
|
 
|
 
|
−
*Delayed - implemented pre-KPP
 
  
 
|-valign="top"
 
|-valign="top"
−
|Hg in WRF-GC
+
|Biomass burning injection height profiles
−
|Yanxu Zhang (Nanjing)
+
|Inderjeet Singh (WashU)
−
|Hg simulation
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg with blowing snow
+
|OCIM integration
−
|Yanxu Xhang (Nanjing)
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
−
|Emissions, Hg simulation
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg isotopes
+
|Updating landcover products in GEOS-Chem
−
|Xiaotian Xu, Yanxu Xhang (Nanjing)
+
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
−
|Hg simulation
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg in CESM CAM-CHEM
+
|Dry deposition physical improvement
−
|Peng Zhang, Yanxu Xhang (Nanjing)
+
|Chris Holmes (FSU)
−
|Hg simulation
+
|Dry deposition
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Complex / multicomplex variables
+
|TOMAS WRF-GC in regional Thailand simulation
−
|Shannon Capps (Drexel)
+
|Win Trivitayanurak (Chulalongkorn U)
−
|Structural
+
|Aerosols
 
|
 
|
  
 
|}
 
|}
−
 
−
----------------
 
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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
 

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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