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

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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
+
On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the [https://geos-chem.seas.harvard.edu/geos-working-groups Working Groups] and the [https://geos-chem.seas.harvard.edu/geos-steering-cmte Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
 
+
On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the [http://acmg.seas.harvard.edu/geos/geos_working_groups.html Working Groups] and the [http://acmg.seas.harvard.edu/geos/geos_steering_cmte.html Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
+
 
+
== Release schedule ==
+
 
+
Please see the [http://wiki.seas.harvard.edu/geos-chem/images/e/e1/GEOS-Chem_Release_Proposal.pdf GEOS-Chem Release Proposal] outlining the procedure and schedule for releasing GEOS-Chem versions.  
+
  
 
== Merged and awaiting release ==
 
== Merged and awaiting release ==
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{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
!width="200px"|Patch version in development
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!width="300px"|Mergeable at any time
!width="200px"|Minor version in development
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!width="200px"|Version in development
  
 
|-valign="top"
 
|-valign="top"
|align="center"| -
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|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
|align="center"|'''[[GEOS-Chem 13.2.0]]'''
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|align="center"|'''[[GEOS-Chem 14.4.0]]'''
  
 
|}
 
|}
  
 
== 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  
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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)
+
|GCHP carbon simulation
|Barron Henderson (EPA)<br>Lyssa Freese (MIT)
+
|Melissa Sulprizio (Harvard)<br>Bob Yantosca (Harvard)
 +
|Carbon
 +
|Medium
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/1992 geos-chem PR #1992]
 +
*[https://github.com/geoschem/GCHP/issues/339 GCHP Issue #339]
 +
 
 +
|-valign="top"
 +
|KORUS-AQ emissions for East Asia (as an option)
 +
|Katie Travis (NASA)
 
|Emissions
 
|Emissions
|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."
 
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/459 Updates to enable automated run directory creation]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
|GCST
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
|Run directory
+
|Emissions
 +
|Simple
 +
|
 +
 
 +
|-valign="top"
 +
|New version of CEDS at 0.1 deg
 +
|Dandan Zhang (WashU)
 +
|Emissions
 +
|Simple
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
 +
*'''Currently on hold while an issue with seasonality in the new CEDS data is being investigated'''
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
 +
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
 +
|Emissions
 
|Medium
 
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/666 Modularize FAST-JX]
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|Remove differences in GC-Classic when breaking up runs in time
|Lizzie Lundgren (GCST)
+
|Lizzie Lundgren (Harvard)
|Structural
+
|GC-Classic
|Difficult
+
|Medium
 
|
 
|
*Will allow other models to use FAST-JX without rest of GEOS-Chem
 
  
 
|-valign="top"
 
|-valign="top"
|Migrating sulfate chemistry into KPP
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|GCHP advection diagnostics
|Mike Long (GCST)
+
|Lizzie Lundgren (Harvard)
|Chemistry &<br>Structural
+
|GCHP diagnostics
|Difficult
+
|Simple
 
|
 
|
* Also includes Moch et al HMS chemistry
+
*[https://github.com/geoschem/GCHP/pull/395 gchp PR #395]
* Also includes C2H4 and C2H2 chemistry
+
  
 
|-valign="top"
 
|-valign="top"
|[http://acmg.seas.harvard.edu/publications/2020/moch_2020_hms_global.pdf HMS chemistry]
+
|Only convert units for species that need it
|Jonathan Moch (Harvard)<br>Mike Long (GCST)
+
|Bob Yantosca (Harvard)
 +
|Unit conversions
 +
|Medium
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]
 +
*'''This update breaks TOMAS, further development is needed'''
 +
 
 +
|}
 +
 
 +
== 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"
 +
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
 +
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
 
|Chemistry
 
|Chemistry
|Easy
+
|TBD
 +
|Delivered<br>June 2023
 
|
 
|
*See [https://github.com/geoschem/geos-chem/pull/456 geoschem/geos-chem PR #456]
+
*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
 +
*Implemented in v12.5, needs to be brought up to current version
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/560 C2H4 and C2H2 chemistry]
+
|ALK4 & R4N2 chemistry
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)<br>Mike Long (GCST)
+
|Jared Brewer (UMN)
 
|Chemistry
 
|Chemistry
|Easy
+
|TBD
 +
|Not delivered
 
|
 
|
*Includes adding C2H4 and C2H2 as advected species with emissions
+
*[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"
|Cleaning up heterogeneous chemistry reaction rate computations
+
|[https://github.com/geoschem/geos-chem/pull/1983 Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition]
|Bob Yantosca (GCST)
+
|Yanshun Li (WashU)
|Chemistry &<br>Structural
+
|Aerosols
|Difficult
+
|Simple
 +
|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]
 +
* '''Waiting on code updates from developer'''
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/HEMCO/issues/92 Avoid double counting of acetone source from monoterpenes when using online MEGAN]
+
|Mass flux regridding fix in MAPL
|Dylan Millet (UMN)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
|Emissions
+
|GCHP input regridding
|Easy
+
|Medium
 
|
 
|
*See [https://github.com/geoschem/HEMCO/pull/93 geoschem/HEMCO PR #93]
+
|
 +
*[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]
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)<br>Mike Long (Harvard)
+
|Haihui Zhu (WashU)
|Chemistry
+
|Aerosols
 
|Medium
 
|Medium
 +
|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]
 +
*'''Currently on hold, as this update requires further modifications in the Cloud-J repository'''
  
 
|-valign="top"
 
|-valign="top"
|Aromatic VOC chemistry
+
|Capture all trop and PBL height changes in budget diagnostics
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)<br>Mike Long (Harvard)
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Chemistry
+
|Diagnostics
 
|Medium
 
|Medium
 
|
 
|
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 +
 
|}
 
|}
  
== Feature integration in the queue ==
+
== 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  
 
{| 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://gmd.copernicus.org/articles/14/4249/2021/gmd-14-4249-2021.html Updated offline dust emissions from Meng et al. (2021)]
+
|Geologic emission of ethane and propane
|Jun Meng (WUStL)<br>Yanshun Li (WUStL)
+
|Matthew Rowlinson and Mat Evans(York)
 
|Emissions
 
|Emissions
|Easy
+
|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"
 
|-valign="top"
|[https://acp.copernicus.org/articles/21/1861/2021/ Updated Rn-222 emissions]
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Bo Zhang
+
|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
 
|
 
|
*Existing Rn emissions will remain as an option
+
*Data involves many files- need to think about temporal frequency
*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/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
|Lee Murray (Rochester)
+
|Shixian Zhai (Harvard)
 
|Emissions
 
|Emissions
|Easy
+
|Delivered
 
|
 
|
 +
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
  
 
|-valign="top"
 
|-valign="top"
|[https://www.pnas.org/content/117/42/26076 Updated aerosol dry deposition]
+
|DMS Chemistry
|Jeff Pierce (CSU)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
|Dry deposition
+
|Chemistry
|Easy
+
|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)
+
|Organic acids (RCOOH)
|Lu Shen (Harvard)
+
|Katie Travis (NASA)
 
|Chemistry
 
|Chemistry
|Difficult
+
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
+
|Improve carbon & nitrogen conservation in reactions
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
+
|Kelvin Bates (Harvard)
|Specialty simulation
+
|Chemistry
|Medium
+
|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
 
|
 
|
*See [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
 
*Ideally implemented as a chemical mechanism in KPP
 
  
 
|}
 
|}
  
== 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="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]
+
|Replace ISORROPIA with [https://gmd.copernicus.org/preprints/gmd-2023-159/gmd-2023-159.pdf HTEPv1.0]
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
+
|Seb Eastham (MIT)<br>Lizzie Lundgren (Harvard)
 +
|Aerosol thermodynamics
 +
|
 +
*Will be git submodule
 +
 
 +
|-valign="top"
 +
|PPN+hv, PPN+OH
 +
|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]
+
|Initial conditions for CH4 correcting background and stratospheric biases
|Xu Yue (NUIST)
+
|Todd Mooring (Harvard)
|Science
+
|Methane simulation
|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 in the 6-12 months timeframe.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
Line 256: Line 442:
 
!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"
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
+
|Snow / Icy Bromine
|Chris Holmes (FSU)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
 
|Chemistry
 
|Chemistry
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
 
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
+
|Monoterpene oxidation scheme
|Hongjian Weng (PKU)
+
|Jessica Haskins (MIT)
|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]]
+
|Fire related VOCs including furans
|Hongjian Weng (PKU)
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
|Emissions
+
|Chemistry
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
 
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
+
|Extension of UCX into the mesosphere
|Hongjian Weng (PKU)
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
|Emissions
+
|Chemistry
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
 
  
 
|-valign="top"
 
|-valign="top"
|Provide recommended rather than hard-coded scaling factors for online emissions
+
|Methane flux ingestion
|GCST
+
|Eloise Marais (UCL)
|Emissions
+
|Chemistry
 
|
 
|
*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]
+
|Dust non-sphericity impacts on surface chem and optical properties
|GCST
+
|Inderjeet Singh (WashU)
|Emissions
+
|Aerosols
 
|
 
|
*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]
+
|Size-resolved stratospheric aerosol
|GCST
+
|Seb Eastham (MIT)
|Emissions
+
|Aerosols
 
|
 
|
*Identified as a priority for GC 13, but not yet developed
 
  
 
|-valign="top"
 
|-valign="top"
|Diagnostic to archive XCO2, XCO, and XCH4
+
|Extend aerosol settling
|Dylan Jones (Toronto)
+
|Eloise Marais (UCL)
|Diagnostic
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
+
|Stratospheric aerosol APM
|Kazu Miyazaki (JPL)
+
|Fangqun Yu (SUNY)
|Input data
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|BrC aging
+
|Plume-in-grid model
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
+
|Hongwei Sun (Harvard)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Shared Socioeconomic Pathways Emission Inventories
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
|Hong Liao (NUIST)
+
|Lee Murray (Rochester)
 
|Emissions
 
|Emissions
 
|
 
|
  
 +
|-valign="top"
 +
|Seb aircraft emissions beyond recent 2019 update
 +
|Seb Eastham (MIT)
 +
|Emissions
 +
|
  
 
|-valign="top"
 
|-valign="top"
|Rediagnosis of RAS convection in GEOS-Chem
+
|FRP-based fire emsisions for eastern US at 0.2 deg
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
+
|Charlie Fite (FSU)
|Convection
+
|Emissions
 
|
 
|
*Work is finished and a manuscript is in preparation.
 
  
 
|-valign="top"
 
|-valign="top"
|Read-in of native GEOS output
+
|Hg iodine chemistry
|WUStL GCST
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
|Input data
+
|Hg simulation
 
|
 
|
GCHP only
 
  
 
|-valign="top"
 
|-valign="top"
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
+
|Hg simulation in GCHP
|Sebastian Eastham (MIT)
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
|Transport
+
|Hg 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
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
|Sebastian Eastham (MIT)
+
|Yanxu Zhang (Nanjing U.)
|Transport
+
|Hg simulation
 
|
 
|
*Identified as a priority for GC 13, but not yet delivered
 
*GCHP only
 
  
|}
+
|-valign="top"
 +
|Dry deposition diagnostics by land cover
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
  
== Over the horizon (6-12 months) ==
+
|-valign="top"
 +
|Dry deposition process diagnostics
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
  
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
|- bgcolor="#cccccc"
+
|Isotope simulation for CO and CH4 in GCHP
!width="200px"|Feature
+
|Lee Murray (Rochester)
!width="200px"|Contributor(s)
+
|Carbon simulation
!width="100px"|Model scope
+
|
!width="420px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
|Methylethylketone chemistry
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Jared Brewer (CSU)
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
|Chemistry
+
|Emissions<br>CH4 simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Add sulfate dependence to SOA yield from isoprene in simple SOA
+
|Modularization of aerosols code for interface with GOCART in GEOS
|Eloise Marais (Leicester)
+
|Christoph Keller (GMAO)
|Chemistry
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|GTMM updates
+
|Improve load balancing in GCHP
|Ben Geyman (Harvard)
+
|Seb Eastham (MIT)
|Hg simulation
+
|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"
 
|-valign="top"
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Christoph Keller (NASA GMAO)
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
|Transport Tracer simulation
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Streamlining of specialty simulations through HEMCO and KPP
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
|GCST
+
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
|Chemistry, Specialty simulations
+
|Transport
 
|
 
|
  
Line 408: Line 597:
  
 
== 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
Line 414: Line 605:
 
!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"
|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)
|Aerosols
+
|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
+
|HOx and ozone "emissions" from lightning as option in model to play with
|Yanxu Xhang (Nanjing)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
|Emissions, Hg simulation
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg isotopes
+
|Sea salt aerosol from sea ice leads
|Xiaotian Xu, Yanxu Xhang (Nanjing)
+
|Hannah Horowitz (U. Illinois)
|Hg simulation
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg in CESM CAM-CHEM
+
|Drought-stress algorithm
|Peng Zhang, Yanxu Xhang (Nanjing)
+
|Wei Li (U. Houston)
|Hg simulation
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Complex / multicomplex variables
+
|Biomass burning injection height profiles
|Shannon Capps (Drexel)
+
|Inderjeet Singh (WashU)
|Structural
+
|Emissions
 
|
 
|
  
|}
+
|-valign="top"
 +
|OCIM integration
 +
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
 +
|
 +
|
  
----------------
+
|-valign="top"
 +
|Updating landcover products in GEOS-Chem
 +
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
 +
|Input data
 +
|
  
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
+
|-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 18:08, 21 March 2024

On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the Working Groups and the Steering Committee. For history of past releases see the GEOS-Chem Versions wiki page.

Merged and awaiting release

See the links below for items merged and awaiting release.

Mergeable at any time Version in development
GEOS-Chem no-diff-to-benchmark GEOS-Chem 14.4.0

Feature integration in progress

Features listed in this table are actively being integrated into GEOS-Chem by the GEOS-Chem Support Team. In addition, we continuously implement structural updates in the model to maintain and develop coupling with other models including GEOS, CESM, and the model adjoint.

Feature Contributor(s) Model scope Ease of implementation Notes and References
GCHP carbon simulation Melissa Sulprizio (Harvard)
Bob Yantosca (Harvard)
Carbon Medium
KORUS-AQ emissions for East Asia (as an option) Katie Travis (NASA) Emissions Simple
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech)
Emissions Simple
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple
  • geos-chem issue #1745
  • Currently on hold while an issue with seasonality in the new CEDS data is being investigated
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa)
Emissions Medium
Remove differences in GC-Classic when breaking up runs in time Lizzie Lundgren (Harvard) GC-Classic Medium
GCHP advection diagnostics Lizzie Lundgren (Harvard) GCHP diagnostics Simple
Only convert units for species that need it Bob Yantosca (Harvard) Unit conversions 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
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN)
Chemistry TBD Delivered
June 2023
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry TBD Not delivered
Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition Yanshun Li (WashU) Aerosols Simple Delivered
Oct 2023
Mass flux regridding fix in MAPL Lizzie Lundgren (Harvard)
Seb Eastham (MIT)
GCHP input regridding Medium
Parameterization of SNA and OM dry size Haihui Zhu (WashU) Aerosols Medium Delivered
Aug 2023
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard)
Diagnostics Medium

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
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
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