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]].
−
 
+
−
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.
+
  
 
== Merged and awaiting release ==
 
== Merged and awaiting release ==
 +
 +
See the links below for items merged and awaiting release.
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
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!width="500px"|Feature
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!width="200px"|Patch version in development
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!width="200px"|Contributor(s)
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!width="200px"|Version in development
−
!width="100px"|Model scope
+
−
!width="300px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
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|TBD
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|align="center"|'''[[GEOS-Chem 14.2.1]]'''
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|
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|align="center"|'''[[GEOS-Chem 14.2.0]]'''
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|
+
−
|
+
  
 
|}
 
|}
  
 
== Feature integration in progress ==
 
== Feature integration in progress ==
 +
 +
Features listed in this table are actively being integrated into GEOS-Chem by the [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  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
−
!width="500px"|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="100px"|Ease of implementation
−
!width="200px"|Notes
+
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/547 Update US emissions to NEI2016]
+
|TOMAS in GCHP
−
|Barron Henderson (EPA)<br>Lyssa Freese (MIT)
+
|Betty Croft (Dalhousie)
−
|Emissions
+
|TOMAS
 +
|Simple
 
|
 
|
 +
*[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"
 +
|[https://github.com/geoschem/geos-chem/issues/1511 Bug fix for TOMAS sulfate production rates]
 +
|Betty Croft (Dalhousie)
 +
|TOMAS
 +
|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/geos-chem/pull/1569 geos-chem PR #1569]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://data.pnnl.gov/dataset/CEDS-4-21-21 CEDS v2 emissions through 2019]
+
|Update surface methane boundary condition using NOAA flask data
−
|Patrick Campbell (NOAA-ARL)
+
|Lee Murray (Rochester)
−
|Emissions
+
|Input data
 +
|Simple
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/1626 geos-chem issue #1626]
 +
 +
|-valign="top"
 +
|GCHP carbon simulation
 +
|Bob Yantosca (Harvard)
 +
|Carbon
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/GCHP/issues/339 geos-chem Issue #339]
  
 
|-valign="top"
 
|-valign="top"
−
|[http://globalchange.bnu.edu.cn/research/laiv6 Updated Yuan/BNU MODIS LAI product (2000-2019)]
+
|GEOS-IT meteorology
−
|Jenny Fisher (U. Wollongong)
+
|Lizzie Lundgren (Harvard)
−
|Emissions<br>Dry deposition
+
|New meteorology option
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/1848 geos-chem PR #1848]
 +
 +
|-valign="top"
 +
|Cloud-J for computing photolysis rates
 +
|Lizzie Lundgren (Harvard)
 +
|Photolysis
 +
|Medium
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/1522 geos-chem PR #1848]
 +
*[https://github.com/geoschem/GCClassic/pull/27 gcclassic PR #27]
 +
 +
|-valign="top"
 +
|Mass flux regridding fix in MAPL
 +
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
 +
|GCHP input regridding
 +
|Medium
 +
|
 +
*[https://github.com/GEOS-ESM/MAPL/pull/2056 GEOS-ESM/MAPL PR #2056]
 +
 +
|-valign="top"
 +
|Improve pressure level computation for GCHP advection
 +
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
 +
|GCHP advection
 +
|Medium
 +
|
 +
 +
|-valign="top"
 +
|GCHP advection diagnostics
 +
|Lizzie Lundgren (Harvard)
 +
|GCHP diagnostics
 +
|Medium
 +
|
 +
 +
|-valign="top"
 +
|Move Aerosol_Mod module variables to State_Chm
 +
|Lizzie Lundgren (Harvard)
 +
|Aerosols
 +
|Medium
 
|
 
|
−
*Processing scripts delivered to GCST (Aug 2020)
 
  
 
|}
 
|}
  
−
== Feature integration in the queue ==
+
== 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  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
−
!width="500px"|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="100px"|Ease of implementation
−
!width="200px"|Notes
+
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
!colspan="5" bgcolor="#CCFFFF"|Updates that will affect full-chemistry simulations
+
|New version of CEDS at 0.1 deg
 +
|Dandan Zhang (WashU)
 +
|Emissions
 +
|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
 +
|
 +
*https://gmao.gsfc.nasa.gov/gmaoftp/geoscf/volcano_so2/v202302/
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
+
|KORUS-AQ emissions for East Asia (as an option)
−
|Sam Silva (MIT)
+
|Katie Travis (NASA)
−
|Science
+
|Emissions
−
|
+
|Simple
 +
|Delivered<br>Apr 2023
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/preprints/gmd-2020-380/ Dust emissions from Meng et al. (in review)]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|Jun Meng (WUStL)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
 
|Emissions
 
|Emissions
 +
|Simple
 +
|Delivered<br>Jul 2022
 
|
 
|
 +
 +
|-valign="top"
 +
|ALK4 & R4N2 chemistry
 +
|Jared Brewer (UMN)
 +
|Chemistry
 +
|TBD
 +
|Not delivered
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
 +
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., submitted 2023.]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2879/2020/ Improved wet scavenging from Luo et al. (2020)] (as option)
+
|Update reactions with new JPL & IUPAC recommendations
−
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
+
|Kelvin Bates (NOAA CSL)
−
|Wet deposition
+
|Chemistry
 +
|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"
 +
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
 +
|Haihui Zhu (WashU)
 +
|Aerosols
 +
|Simple
 +
|Delivered<br>Aug 2023
 
|
 
|
−
*Delivered to GCST (Nov 2020)
+
*[https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1292/ Zhu et al., EGUsphere, submitted 2023.]
−
*See [https://github.com/geoschem/geos-chem/pull/522 geoschem/geos-chem PR #522]
+
*[https://github.com/geoschem/geos-chem/pull/1902 geos-chem PR #1902]
−
*These updates will replace the Luo et al. (2019) option
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/21/1861/2021/ Updated Rn-222 emissions]
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|Bo Zhang
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
 
|Emissions
 
|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
 
|
 
|
−
*The existing Rn emissions will remain as an option
+
 
−
*Data are available at https://doi.org/10.5281/zenodo.3942287
+
|}
 +
 
 +
== Ready to go in ==
 +
 
 +
Features listed in this table are ready to go in but have either not been delivered or are not yet prioritized for integration into GEOS-Chem.
 +
 
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions|Updated offline emissions]]
+
|Geologic emission of ethane and propane
−
|Yanshun Li (WUStL)<br>Hongjian Weng (PKU)
+
|Matthew Rowlinson and Mat Evans(York)
 
|Emissions
 
|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"
−
|Provide recommended rather than hard-coded scaling factors for online emissions
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|GCST
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
 
|Emissions
 
|Emissions
 +
|Delivered<br>Jul 2021
 
|
 
|
−
|
+
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for lightning NOx, volcano, and open fire emissions]
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
−
|GCST
+
|Shixian Zhai (Harvard)
 
|Emissions
 
|Emissions
 +
|Delivered
 
|
 
|
−
|
+
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.sciencedirect.com/science/article/abs/pii/S1352231019305138?via%3Dihub Trace metal simulation]
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
−
|Junwei Xu (Dalhousie)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
−
|Specialty simulation
+
|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.]
−
*Delivered to GCST (Nov 2020)
+
*Implemented in v12.5, needs to be brought up to current version
−
*See [https://github.com/geoschem/geos-chem/pull/511 geoschem/geos-chem PR #511]
+
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/560 C2H4 and C2H2 chemistry]
+
|DMS Chemistry
−
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 
|Chemistry
 
|Chemistry
−
|
+
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/publications/2020/moch_2020_hms_global.pdf HMS chemistry]
+
|Organic acids (RCOOH)
−
|Jonathan Moch (Harvard)
+
|Katie Travis (NASA)
 
|Chemistry
 
|Chemistry
 +
|Not delivered
 
|
 
|
−
|
 
−
*Delivered to GCST (Sep 2020)
 
−
*See [https://github.com/geoschem/geos-chem/pull/456 geoschem/geos-chem PR #456]
 
  
−
|-
+
|-valign="top"
−
|[https://acp.copernicus.org/articles/17/3699/2017/ Blowing snow emissions of sea salt and sea salt bromide]
+
|Improve carbon & nitrogen conservation in reactions
−
|Lyatt Jaegle (UW)
+
|Kelvin Bates (Harvard)
−
|Emissions
+
|Chemistry
−
|
+
|Not delivered
 
|
 
|
−
*Delivered to GCST (Jun 2020)
 
−
*See [https://github.com/geoschem/geos-chem/pull/356 geoschem/geos-chem PR #356]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.pnas.org/content/117/42/26076 Updated aerosol dry deposition]
+
|Blowing snow sea salt in TOMAS
−
|Jeff Pierce (CSU)
+
|Betty Croft (Dalhousie)
−
|Dry deposition
+
|Aerosols
 +
|Not delivered
 
|
 
|
−
|
 
−
*See [https://github.com/geoschem/geos-chem/issues/604 geoschem/geos-chem #604]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
−
|Lu Shen (Harvard)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
−
|Chemistry
+
|Hg simulation
−
|
+
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
+
|WRF-GC Hg simulation
−
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
−
|Specialty simulation
+
|Hg simulation<br>WRF-GC
−
|
+
|Not delivered
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
 
−
 
−
|-
 
−
!colspan="5" bgcolor="#CCFFFF"|Features only affecting GCHP:
 
  
 
|-valign="top"
 
|-valign="top"
−
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
+
|Updated HgII gas-partical partitioning
−
|Sebastian Eastham (MIT)
+
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
−
|Transport
+
|Hg simulation
−
|
+
|Not delivered
 
|
 
|
 +
*Should be option, not default
  
 
|-valign="top"
 
|-valign="top"
−
|Add capability to read mass fluxes for use in advection
+
|Dry deposition to F90 (readability)
−
|Sebastian Eastham (MIT)
+
|Chris Holmes (FSU)
−
|Input data, Transport
+
|Dry deposition
−
|
+
|Not delivered
 
|
 
|
  
 
|}
 
|}
  
−
== Feature integration not yet prioritized ==
+
== Almost there (< 6 months) ==
  
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
  
−
{| border=1 cellspacing=0 cellpadding=5  
+
{|border=1 cellspacing=0 cellpadding=5
−
|-bgcolor="#CCCCCC"
+
|- bgcolor="#cccccc"
−
!width="500px"|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="200px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
+
|PPN+hv, PPN+OH
−
|Chris Holmes (FSU)
+
|Robert Ryan (UCL)
−
|Chemistry'
+
|Chemistry
−
|
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
+
|MBO
−
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
+
|Michael Vermeuel (UMN)
 
|Chemistry
 
|Chemistry
 
|
 
|
 +
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
 +
|Seb Eastham (MIT)
 +
|Science
 
|
 
|
−
*Delivered to GCST (Jun 2020)
+
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Sam Silva (MIT)
+
|Bob Yantosca (Harvard)
−
|Emissions
+
|Aerosols<br>Structural
 
|
 
|
 +
*Ongoing
 +
 +
|-valign="top"
 +
|Re-binning of off-line sea salt and dust for use in TOMAS
 +
|Betty Croft (Dalhousie)
 +
|Aerosols
 
|
 
|
−
*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]
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
−
|Xu Yue (NUIST)
+
|Betty Croft (Dalhousie)
−
|Science
+
|Aerosols
 
|
 
|
 +
 +
|-valign="top"
 +
|ML algorithms for bulk aerosols
 +
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
 +
|Aerosols
 
|
 
|
−
*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]
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
−
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
+
|Shixian Zhai (Harvard)
−
|Science
+
|Aerosols
 
|
 
|
 +
 +
|-valign="top"
 +
|Updates to Hodzic SOA scheme
 +
|Jared Brewer (Harvard)
 +
|Aerosols
 
|
 
|
−
*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]]
+
|Automated reduction in isoprene scheme
−
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
+
|Dan Westervelt (Lamont-Doherty)
−
|Chemistry
+
|Aerosols
−
|
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archived CMIP6 Met Products for GEOS-Chem Input
+
|Brown carbon chemsitry
−
|Lee Murray (Rochester)
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
−
|Input data
+
|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"
−
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry]
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
−
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)
+
|Jintai Lin (PKU)
−
|Chemistry
+
|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"
 
|-valign="top"
−
|Landcover/Fire Emissions Offline LPJlmfire
+
|Updated offline sea salt emissions
−
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
 
|Emissions
 
|Emissions
 
|
 
|
 +
 +
|-valign="top"
 +
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
 +
|Sam Silva (MIT)
 +
|Emissions &<br>Science
 +
|
 +
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
 +
*Needs to be updated to a more recent GEOS-Chem version
 +
 +
|-valign="top"
 +
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
 +
|Bob Yantosca (Harvard)
 +
|Model performance
 +
|
 +
*Ongoing (will be done as time allows)
 +
 +
|-valign="top"
 +
|Retire all BPCH diagnostics
 +
|Bob Yantosca (Harvard)
 +
|Diagnostics
 +
|
 +
*Can be done following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]
 +
 +
|-valign="top"
 +
|Assess memory leak in GCHP
 +
|Killian Murphy (York)
 +
|Model performance
 +
|
 +
*NOTE: Most memory leaks in GCHP have been fixed by [https://github.com/geoschem/geos-chem/pull/1353 geoschem/geos-chem PR #1353].  Need to assess if any memory leaks still remain.
 +
 +
|-valign="top"
 +
|Hybrid MPI-OpenMP in GCHP
 +
|Seb Eastham (MIT)<br>Killian Murphy (York)
 +
|Model performance
 +
|
 +
 +
|-valign="top"
 +
|Improve run directory templating and creation with init_rd.sh and shared directories
 +
|Jourdan He (WashU)
 +
|Run directories
 +
|
 +
 +
|-valign="top"
 +
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
 +
|GCST?
 +
|Documentation
 
|
 
|
  
 
|}
 
|}
  
−
== Almost there (< 6 months) ==
+
== Over the horizon (6-12 months) ==
 +
 
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
−
!width="500px"|Feature
+
!width="200px"|Feature
 
!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
−
!width="300px"|Notes
+
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Diagnostic to archive XCO2, XCO, and XCH4
+
|Snow / Icy Bromine
−
|Dylan Jones (Toronto)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
−
|Diagnostic
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
+
|Monoterpene oxidation scheme
−
|Kazu Miyazaki (JPL)
+
|Jessica Haskins (MIT)
−
|Input data
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Aromatic VOC chemistry
+
|Fire related VOCs including furans
−
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|BrC aging
+
|Extension of UCX into the mesosphere
−
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Shared Socioeconomic Pathways Emission Inventories
+
|Methane flux ingestion
−
|Hong Liao (NUIST)
+
|Eloise Marais (UCL)
−
|Emissions
+
|Chemistry
 
|
 
|
  
 +
|-valign="top"
 +
|Dust non-sphericity impacts on surface chem and optical properties
 +
|Inderjeet Singh (WashU)
 +
|Aerosols
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|Rediagnosis of RAS convection in GEOS-Chem
+
|Size-resolved stratospheric aerosol
−
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
+
|Seb Eastham (MIT)
−
|Convection
+
|Aerosols
 
|
 
|
−
*Work is finished and a manuscript is in preparation.
 
  
 
|-valign="top"
 
|-valign="top"
−
|Read-in of native GEOS output in GCHP
+
|Extend aerosol settling
−
|WUStL GCST
+
|Eloise Marais (UCL)
−
|Input data
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Modularization of GEOS-Chem: FAST-JX as proof-of-concept
+
|Stratospheric aerosol APM
−
|Lizzie Lundgren (GCST)
+
|Fangqun Yu (SUNY)
−
|Structural
+
|Aerosols
 
|
 
|
  
−
|}
+
|-valign="top"
 +
|Plume-in-grid model
 +
|Hongwei Sun (Harvard)
 +
|Chemistry
 +
|
  
−
== Over the horizon (6-12 months) ==
+
|-valign="top"
 +
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
 +
|Lee Murray (Rochester)
 +
|Emissions
 +
|
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|- bgcolor="#cccccc"
+
|Seb aircraft emissions beyond recent 2019 update
−
!width="500px"|Feature
+
|Seb Eastham (MIT)
−
!width="200px"|Contributor(s)
+
|Emissions
−
!width="100px"|Model scope
+
|
−
!width="300px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
−
|Methylethylketone chemistry
+
|FRP-based fire emsisions for eastern US at 0.2 deg
−
|Jared Brewer (CSU)
+
|Charlie Fite (FSU)
−
|Chemistry
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Add sulfate dependence to SOA yield from isoprene in simple SOA
+
|Hg iodine chemistry
−
|Eloise Marais (Leicester)
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
−
|Chemistry
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|GTMM updates
+
|Hg simulation in GCHP
−
|Ben Geyman (Harvard)
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
 
|Hg simulation
 
|Hg simulation
 
|
 
|
  
 +
|-valign="top"
 +
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
 +
|Yanxu Zhang (Nanjing U.)
 +
|Hg simulation
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
+
|Dry deposition diagnostics by land cover
−
|Christoph Keller (NASA GMAO)
+
|Holly Nowell (FSU)
−
|Transport Tracer simulation
+
|Diagnostics
 
|
 
|
 +
 +
|-valign="top"
 +
|Dry deposition process diagnostics
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Streamlining of specialty simulations through HEMCO and KPP
+
|Isotope simulation for CO and CH4 in GCHP
−
|GCST
+
|Lee Murray (Rochester)
−
|Chemistry, Specialty simulations
+
|Carbon simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
 +
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
 +
|Emissions<br>CH4 simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Modularization of aerosols code for interface with GOCART in GEOS
 +
|Christoph Keller (GMAO)
 +
|Structural
 +
|
 +
 
 +
|-valign="top"
 +
|Improve load balancing in GCHP
 +
|Seb Eastham (MIT)
 +
|Model performance
 +
|
 +
 
 +
|-valign="top"
 +
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
 +
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
 +
|Transport
 +
|
 +
 
 +
|-valign="top"
 +
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
 +
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
 +
|Transport
 +
|
 +
 
 +
|-valign="top"
 +
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
 +
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
 +
|Transport
 
|
 
|
  
 
|}
 
|}
  
−
=== Longer term (12-24 months)===
+
== Longer term (12-24 months)==
 +
 
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
−
!width="500px"|Feature
+
!width="200px"|Feature
 
!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
−
!width="300px"|Notes
+
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|GCHP Adjoint
+
|Updates to Aromatic chemistry
−
|Daven Henze (CU Boulder)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
−
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Implement isotope simulation for CO and CH4 in GCHP
+
|Nitrate photolysis
−
|Lee Murray (Rochester)
+
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
−
|Specialty simulation
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Migrate LETFK DA scheme to GCHP
+
|In aerosol chemistry Halogens
−
|Kazu Miyazaki (JPL)
+
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
−
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Super fast chemistry scheme
+
|Benchmark box model of GC Chemistry
−
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
+
|Katie Travis (NASA)
 
|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
+
|Alkyl nitrates Alk7, PHAN
−
|Becky Alexander (UW)
+
|Katie Travis (NASA)
−
|ISORROPIA
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|DMS oxidation scheme updating
+
|Add stratospheric ozone species to full-chemistry simulations
−
|Becky Alexander (UW)<br>Qianjie Chen (UW)
+
|Lee Murray (Rochester)
 
|Chemistry
 
|Chemistry
 
|
 
|
−
*Delayed - implemented pre-KPP
 
−
*Currently bring implemented in KPP by UC Riverside group
 
  
 
|-valign="top"
 
|-valign="top"
−
|Heterogeneous sulfate production
+
|Perchlorate chemistry
−
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Yuk Chun Chan (UWAB)
 
|Chemistry
 
|Chemistry
 
|
 
|
−
*Delayed - implemented pre-KPP
 
  
 
|-valign="top"
 
|-valign="top"
−
|Hg in WRF-GC
+
|Explicit heterogeneous sulfate chemistry
−
|Yanxu Zhang (Nanjing)
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
−
|Hg simulation
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg with blowing snow
+
|ISORROPIA-lite
−
|Yanxu Xhang (Nanjing)
+
|Becky Alexander (UW)
−
|Emissions, Hg simulation
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg isotopes
+
|HOx and ozone "emissions" from lightning as option in model to play with
−
|Xiaotian Xu, Yanxu Xhang (Nanjing)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
−
|Hg simulation
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg in CESM CAM-CHEM
+
|Sea salt aerosol from sea ice leads
−
|Peng Zhang, Yanxu Xhang (Nanjing)
+
|Hannah Horowitz (U. Illinois)
−
|Hg simulation
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Complex / multicomplex variables
+
|Drought-stress algorithm
−
|Shannon Capps (Drexel)
+
|Wei Li (U. Houston)
−
|Structural
+
|
 
|
 
|
  
−
|}
+
|-valign="top"
 +
|Biomass burning injection height profiles
 +
|Inderjeet Singh (WashU)
 +
|Emissions
 +
|
  
−
----------------
+
|-valign="top"
 +
|OCIM integration
 +
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
 +
|
 +
|
  
−
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
+
|-valign="top"
 +
|Updating landcover products in GEOS-Chem
 +
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
 +
|Input data
 +
|
 +
 
 +
|-valign="top"
 +
|Dry deposition physical improvement
 +
|Chris Holmes (FSU)
 +
|Dry deposition
 +
|
 +
 
 +
|-valign="top"
 +
|TOMAS WRF-GC in regional Thailand simulation
 +
|Win Trivitayanurak (Chulalongkorn U)
 +
|Aerosols
 +
|
 +
 
 +
|}

Latest revision as of 17:49, 20 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
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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