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]].
+
−
 
+
−
== 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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|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
 
!width="200px"|Patch version in development
 
!width="200px"|Patch version in development
−
!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"|TBD
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|align="center"|'''[[GEOS-Chem 14.2.1]]'''
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|align="center"|'''[[GEOS-Chem 13.3.0]]'''
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|align="center"|'''[[GEOS-Chem 14.2.0]]'''
  
 
|}
 
|}
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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]].  
+
Features listed in this table are actively being integrated into GEOS-Chem by the [https://geoschem.github.io/support-team.html GEOS-Chem Support Team]. In addition, we continuously implement structural updates in the model to maintain and develop coupling with other models including GEOS, CESM, and the model adjoint.  
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
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!width="100px"|Model scope
 
!width="100px"|Model scope
 
!width="100px"|Ease of implementation
 
!width="100px"|Ease of implementation
−
!width="300px"|Notes
+
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/547 Update US emissions to NEI2016] (as option)
+
|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
−
|Medium
+
|Simple
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/1569 geos-chem PR #1569]
  
 
|-valign="top"
 
|-valign="top"
−
|Upgrade Fast-J to Cloud-J
+
|Update surface methane boundary condition using NOAA flask data
−
|Lizzie Lundgren (GCST)
+
|Lee Murray (Rochester)
−
|Structural
+
|Input data
−
|Difficult
+
|Simple
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/1626 geos-chem issue #1626]
  
 
|-valign="top"
 
|-valign="top"
−
|Migrating sulfate chemistry into KPP
+
|Include NO3A1 in Ox family
−
|Mike Long (GCST)
+
|Melissa Sulprizio (Harvard)
−
|Chemistry &<br>Structural
+
|Chemistry<br>Diagnostics
−
|Difficult
+
|Simple
 
|
 
|
−
* Also includes Moch et al HMS chemistry
 
−
* Also includes C2H4 and C2H2 chemistry
 
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/publications/2020/moch_2020_hms_global.pdf HMS chemistry]
+
|GCHP carbon simulation
−
|Jonathan Moch (Harvard)<br>Mike Long (GCST)
+
|Bob Yantosca (Harvard)
−
|Chemistry
+
|Carbon
−
|Easy
+
|Medium
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/pull/456 geoschem/geos-chem PR #456]
+
*[https://github.com/geoschem/GCHP/issues/339 geos-chem Issue #339]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/560 C2H4 and C2H2 chemistry]
+
|GEOS-IT meteorology
−
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)<br>Mike Long (GCST)
+
|Lizzie Lundgren (Harvard)
−
|Chemistry
+
|New meteorology option
−
|Easy
+
|Medium
 
|
 
|
−
*Includes adding C2H4 and C2H2 as advected species with emissions
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*[https://github.com/geoschem/geos-chem/pull/1848 geos-chem PR #1848]
−
*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]
+
|Cloud-J for computing photolysis rates
−
|Kelvin Bates (Harvard)
+
|Lizzie Lundgren (Harvard)
−
|Chemistry
+
|Photolysis
−
|Easy
+
|Medium
 
|
 
|
−
*Reaction stoichiometry and rate constant in KPP
+
*[https://github.com/geoschem/geos-chem/pull/1522 geos-chem PR #1848]
−
*See [https://github.com/geoschem/geos-chem/pull/814 geoschem/geos-chem PR #814]
+
*[https://github.com/geoschem/GCClassic/pull/27 gcclassic PR #27]
  
 
|-valign="top"
 
|-valign="top"
−
|Cleaning up heterogeneous chemistry reaction rate computations
+
|Mass flux regridding fix in MAPL
−
|Bob Yantosca (GCST)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
−
|Chemistry &<br>Structural
+
|GCHP input regridding
−
|Difficult
+
|Medium
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/pull/817 geoschem/geos-chem PR #817]
+
*[https://github.com/GEOS-ESM/MAPL/pull/2056 GEOS-ESM/MAPL PR #2056]
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry in KPP]
+
|Improve pressure level computation for GCHP advection
−
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)<br>Mike Long (Harvard)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
−
|Chemistry
+
|GCHP advection
 
|Medium
 
|Medium
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/preprints/acp-2021-605/ Aromatic VOC chemistry]
+
|GCHP advection diagnostics
−
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)<br>Mike Long (Harvard)
+
|Lizzie Lundgren (Harvard)
−
|Chemistry
+
|GCHP diagnostics
 
|Medium
 
|Medium
 
|
 
|
  
 
|-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)]
+
|Move Aerosol_Mod module variables to State_Chm
−
|Jun Meng (WUStL)<br>Yanshun Li (WUStL)
+
|Lizzie Lundgren (Harvard)
 +
|Aerosols
 +
|Medium
 +
|
 +
 
 +
|}
 +
 
 +
== 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"
 +
|New version of CEDS at 0.1 deg
 +
|Dandan Zhang (WashU)
 
|Emissions
 
|Emissions
−
|Easy
+
|Simple
 +
|Delivered<br>Apr 2023
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/pull/816 geoschem/geos-chem PR #816]
+
*[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
 +
|
 +
*https://gmao.gsfc.nasa.gov/gmaoftp/geoscf/volcano_so2/v202302/
  
 
|-valign="top"
 
|-valign="top"
−
|Add capability to read mass fluxes for use in advection
+
|KORUS-AQ emissions for East Asia (as an option)
−
|Sebastian Eastham (MIT)
+
|Katie Travis (NASA)
−
|Transport
+
|Emissions
−
|Easy
+
|Simple
 +
|Delivered<br>Apr 2023
 
|
 
|
−
*Identified as a priority for GC 13, but not yet delivered
 
−
*GCHP only
 
  
 
|-valign="top"
 
|-valign="top"
−
|GEOS updates
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|Christoph Keller (GMAO)<br>Lizzie Lundgren (GCST)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
|GEOS
+
|Emissions
−
|Medium (ongoing)
+
|Simple
 +
|Delivered<br>Jul 2022
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC updates
+
|ALK4 & R4N2 chemistry
−
|Thibaud Fritz (MIT)<br>Lizzie Lundgren (GCST)
+
|Jared Brewer (UMN)
−
|CESM
+
|Chemistry
−
|Medium (ongoing)
+
|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"
−
|GMAO library version updates
+
|Update reactions with new JPL & IUPAC recommendations
−
|Tom Clune (GMAO)<br>Ben Auer (GMAO)<br>Atanas Trayanov<br>GCST
+
|Kelvin Bates (NOAA CSL)
−
|GCHP
+
|Chemistry
−
|Medium (ongoing)
+
|Simple
 +
|Delivered<br>Apr 2023
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/1765 geos-chem PR 1765]
 +
*[https://acmg.seas.harvard.edu/sites/projects.iq.harvard.edu/files/acmg/files/bates2023_jpl.pdf Bates, K.H., et al., submitted to Geophys. Model Dev., 2023.]
  
 
|-valign="top"
 
|-valign="top"
−
|GCHP Adjoint updates
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
−
|Colin Lee (Wash U.)
+
|Haihui Zhu (WashU)
−
|GCHP Adjoint
+
|Aerosols
−
|Medium (ongoing)
+
|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
 +
|
 +
*See [https://github.com/geoschem/geos-chem/issues/1288 geoschem/geos-chem #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
 
|
 
|
−
*See [https://github.com/geoschem/MAPL/pull/12 geoschem/MAPL PR #12]
 
  
 
|}
 
|}
  
−
== Feature integration in the queue ==
+
== Ready to go in ==
  
−
Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.
+
Features listed in this table are ready to go in but have either not been delivered or are not yet prioritized for integration into GEOS-Chem.
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
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!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
−
!width="100px"|Ease of implementation
+
!width="100px"|Delivery status
−
!width="300px"|Notes
+
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/21/1861/2021/ Updated Rn-222 emissions]
+
|Geologic emission of ethane and propane
−
|Bo Zhang
+
|Matthew Rowlinson and Mat Evans(York)
 
|Emissions
 
|Emissions
−
|Easy
+
|Delivered<br>Jan 2023
 
|
 
|
−
*Existing Rn emissions will remain as an option
+
*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
−
*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]
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
|Lee Murray (Rochester)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 +
|Science
 +
|Delivered<br>Feb 2021
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
 +
 
 +
|-valign="top"
 +
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
 +
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
 
|Emissions
 
|Emissions
−
|Easy
+
|Delivered<br>Jul 2021
 
|
 
|
 +
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.pnas.org/content/117/42/26076 Updated aerosol dry deposition]
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
−
|Jeff Pierce (CSU)
+
|Shixian Zhai (Harvard)
−
|Dry deposition
+
|Emissions
−
|Easy
+
|Delivered
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/604 geoschem/geos-chem #604]
+
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
  
 
|-valign="top"
 
|-valign="top"
−
|[https://doi.org/10.5194/acp-2021-441 Updates to IONO2 hydrolysis from Wang et al. (2021)]
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
−
|Tomas Sherwen (York)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
 
|Chemistry
 
|Chemistry
−
|Medium
+
|Delivered<br>June 2023
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/pull/719 geoschem/geos-chem PR #719]
+
*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
−
*Needs to be merged with Bob Yantosca's gckpp_HetRates.F90 updates slated for 13.3.0
+
*Implemented in v12.5, needs to be brought up to current version
 +
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
+
|DMS Chemistry
−
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
−
|Specialty simulation
+
|Chemistry
−
|Medium
+
|Not delivered
 
|
 
|
−
*See [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)
+
|Organic acids (RCOOH)
−
|Lu Shen (Harvard)
+
|Katie Travis (NASA)
 
|Chemistry
 
|Chemistry
−
|Difficult
+
|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
 
|
 
|
−
*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"
 
|-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]
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Aerosols<br>Structural
−
|Easy
+
 
|
 
|
−
*Delivered to GCST (Feb 2021)
+
*Ongoing
−
*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]]
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
+
|Betty Croft (Dalhousie)
−
|Chemistry
+
|Aerosols
−
|Easy
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archived CMIP6 Met Products for GEOS-Chem Input
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
−
|Lee Murray (Rochester)
+
|Betty Croft (Dalhousie)
−
|Input data
+
|Aerosols
−
|Easy
+
 
|
 
|
−
*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
+
|ML algorithms for bulk aerosols
−
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
 +
|Shixian Zhai (Harvard)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Updates to Hodzic SOA scheme
 +
|Jared Brewer (Harvard)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Automated reduction in isoprene scheme
 +
|Dan Westervelt (Lamont-Doherty)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Brown carbon chemsitry
 +
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
 +
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
 +
|Convection
 +
|
 +
 
 +
|-valign="top"
 +
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
 +
|Jintai Lin (PKU)
 +
|Emissions
 +
|
 +
*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 314: Line 490:
 
!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
 +
|
 +
 
 +
|-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
 
|
 
|
−
*GCHP only
 
  
 
|-valign="top"
 
|-valign="top"
−
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
−
|Sebastian Eastham (MIT)
+
|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 443: Line 653:
 
!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
+
|ISORROPIA-lite
 
|Becky Alexander (UW)
 
|Becky Alexander (UW)
 
|Aerosols
 
|Aerosols
Line 515: Line 710:
  
 
|-valign="top"
 
|-valign="top"
−
|DMS oxidation scheme updating
+
|HOx and ozone "emissions" from lightning as option in model to play with
−
|Becky Alexander (UW)<br>Qianjie Chen (UW)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
−
|Chemistry
+
|Emissions
 
|
 
|
−
*Delayed - implemented pre-KPP
 
−
*Currently bring implemented in KPP by UC Riverside group
 
  
 
|-valign="top"
 
|-valign="top"
−
|Heterogeneous sulfate production
+
|Sea salt aerosol from sea ice leads
−
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Hannah Horowitz (U. Illinois)
−
|Chemistry
+
|Emissions
 
|
 
|
−
*Delayed - implemented pre-KPP
 
  
 
|-valign="top"
 
|-valign="top"
−
|Hg in WRF-GC
+
|Drought-stress algorithm
−
|Yanxu Zhang (Nanjing)
+
|Wei Li (U. Houston)
−
|Hg simulation
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg with blowing snow
+
|Biomass burning injection height profiles
−
|Yanxu Xhang (Nanjing)
+
|Inderjeet Singh (WashU)
−
|Emissions, Hg simulation
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg isotopes
+
|OCIM integration
−
|Xiaotian Xu, Yanxu Xhang (Nanjing)
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
−
|Hg simulation
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg in CESM CAM-CHEM
+
|Updating landcover products in GEOS-Chem
−
|Peng Zhang, Yanxu Xhang (Nanjing)
+
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
−
|Hg simulation
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Complex / multicomplex variables
+
|Dry deposition physical improvement
−
|Shannon Capps (Drexel)
+
|Chris Holmes (FSU)
−
|Structural
+
|Dry deposition
 
|
 
|
  
−
|}
+
|-valign="top"
 +
|TOMAS WRF-GC in regional Thailand simulation
 +
|Win Trivitayanurak (Chulalongkorn U)
 +
|Aerosols
 +
|
  
−
----------------
+
|}
−
 
+
−
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
+

Latest revision as of 23:54, 25 September 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.

Patch version in development Version in development
GEOS-Chem 14.2.1 GEOS-Chem 14.2.0

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 NO3A1 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
Move Aerosol_Mod module variables to State_Chm Lizzie Lundgren (Harvard) Aerosols 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
Update reactions with new JPL & IUPAC recommendations Kelvin Bates (NOAA CSL) Chemistry Simple Delivered
Apr 2023
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

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


DMS Chemistry Linia Tashmim (UC Riverside)
William Porter (UC Riverside) 		Chemistry Not delivered
Organic acids (RCOOH) Katie Travis (NASA) Chemistry Not delivered
Improve carbon & nitrogen conservation in reactions Kelvin Bates (Harvard) Chemistry Not delivered
Blowing snow sea salt in TOMAS Betty Croft (Dalhousie) Aerosols Not delivered
Australian anthropogenic Hg emissions Stephen MacFarlane (UOW)
Jenny Fisher (UOW)
Hannah Horowitz (U. Illinois)
Viral Shah (Harvard) 		Hg simulation Not delivered
WRF-GC Hg simulation Xiaotian Xu (Nanjing U.)
Yanxu Zhang (Nanjing U.) 		Hg simulation
WRF-GC 		Not delivered
Updated HgII gas-partical partitioning Kaiyun Liu (Tsinghua U.)
Qingru Wu (Tsinghua U.)
Shuxiao Wang (Tsinghua U.) 		Hg simulation Not delivered
  • Should be option, not default
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry deposition Not delivered

Almost there (< 6 months)

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

Feature Contributor(s) Model scope Notes and References
PPN+hv, PPN+OH Robert Ryan (UCL) Chemistry
MBO Michael Vermeuel (UMN) Chemistry
Stratospheric adjustment with RRTMG in GEOS-Chem Seb Eastham (MIT) Science


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
ISORROPIA-lite Becky Alexander (UW) Aerosols
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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