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

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On this page we list the current priorities for GEOS-Chem development. This list was compiled by the user Working Groups at the last [http://acmg.seas.harvard.edu/geos/meetings/2013/index.html International GEOS-Chem Meeting (IGC6)] in May 2013 and has been continuously updated since based on code readiness and input from the Working Groups and the Steering Committee.
+
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]].
  
−
We also invite you to view our [https://trello.com/board/geos-chem-support-team/4fe36668fc79a1d3540ba80b GEOS-Chem Support Team project management board on Trello.com], which shows the current GCST workflow.
+
== Merged and awaiting release ==
  
−
== List of priorities as of March 2014 ==
+
See the links below for items merged and awaiting release.
  
−
Items "Awaiting release" will be part of the next version release of GEOS-Chem and are actively being incorporated into the standard model and benchmarked. Other items are in different stages of readiness and will be included in future versions of the model.
+
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="300px"|Mergeable at any time
 +
!width="200px"|Version in development
  
−
=== Awaiting release ===
+
|-valign="top"
 +
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
 +
|align="center"|'''[[GEOS-Chem 14.4.0]]'''
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|}
−
|- bgcolor="#cccccc"
+
 
−
!width="400px"|Item
+
== Feature integration in progress ==
−
!width="300px"|Author(s)
+
 
−
!width="400px"|Status
+
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.
−
|- bgcolor="#ccffff"
+
 
−
!width="400px"|Science updates
+
{| border=1 cellspacing=0 cellpadding=5  
−
!width="300px"|
+
|-bgcolor="#CCCCCC"
−
!width="400px"|
+
!width="200px"|Feature
−
|-
+
!width="200px"|Contributor(s)
−
|[[TOMAS_aerosol_microphysics#Updates_for_GEOS-Chem_v9-02_public_release|TOMAS parallelization]]
+
!width="100px"|Model scope
−
|Sal Farina (CSU)<br>Jeff Pierce (CSU)<br>[[GEOS-Chem Support Team]]
+
!width="100px"|Ease of implementation
 +
!width="300px"|Notes and References
 +
 
 +
|-valign="top"
 +
|GCHP carbon simulation
 +
|Melissa Sulprizio (Harvard)<br>Bob Yantosca (Harvard)
 +
|Carbon
 +
|Medium
 
|
 
|
−
*Implemented in the [[GEOS-Chem v9-02]] public release (03 Mar 2014)
+
*[https://github.com/geoschem/geos-chem/pull/1992 geos-chem PR #1992]
−
|-
+
*[https://github.com/geoschem/GCHP/issues/339 GCHP Issue #339]
−
|[[UCX chemistry mechanism|UCX strat chem mechanism]], includes:
+
 
−
*[[UCX chemistry mechanism|Stratospheric chemistry]]
+
|-valign="top"
−
*[[UCX chemistry mechanism|Stratospheric aerosols]]
+
|KORUS-AQ emissions for East Asia (as an option)
−
*[[UCX chemistry mechanism|Fast-JX photolysis mechanism]]
+
|Katie Travis (NASA)
−
|UCX: Sebastian Eastham (MIT)<br>Fast-JX: Jingqiu Mao (Princeton)
+
|Emissions
 +
|Simple
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Oct 2013)
+
 
−
*Currently being incorporated into [[GEOS-Chem v10-01]]
+
|-valign="top"
−
|-
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|[[Grid-Independent GEOS-Chem: Emissions Component|HEMCO emissions component]]
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
|Christoph Keller (Harvard)<br>[[GEOS-Chem Support Team]]<br>GMAO
+
|Emissions
 +
|Simple
 
|
 
|
−
*Is operational in the NASA GEOS-5 GCM (Feb 2013)
+
 
−
*Slated for inclusion in [[GEOS-Chem v10-01]]
+
|-valign="top"
−
|-
+
|New version of CEDS at 0.1 deg
−
|[[Coupling GEOS-Chem with RRTMG|Online Radiative Transfer in GEOS-Chem]]
+
|Dandan Zhang (WashU)
−
|David Ridley (MIT)<br>Colette Heald (MIT)
+
|Emissions
 +
|Simple
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Oct 2013)
+
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
−
*Slated for inclusion in [[GEOS-Chem v10-01]]
+
*'''Currently on hold while an issue with seasonality in the new CEDS data is being investigated'''
−
|-
+
 
−
|[[EPA/NEI08 North American emissions|NEI 2008 emissions with hourly resolution]]
+
|-valign="top"
−
|Katie Travis (Harvard)
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
 +
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
 +
|Emissions
 +
|Medium
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Summer 2013)
+
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
−
*This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
+
*Incorporates new met field TSOIL1
−
|-
+
 
−
|[[MEGAN_biogenic_emissions#Update_to_MEGAN2.1_.28Guenther_et_al..2C_2012.29|Update to MEGAN2.1]]
+
|-valign="top"
−
|Dylan Millet (U. Minnesota)
+
|Remove differences in GC-Classic when breaking up runs in time
 +
|Lizzie Lundgren (Harvard)
 +
|GC-Classic
 +
|Medium
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Summer 2013)
+
 
−
*This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
+
|-valign="top"
−
|-
+
|GCHP advection diagnostics
−
|[[EDGAR anthropogenic emissions|Update to EDGAR 4.2 anthropogenic emissions]]
+
|Lizzie Lundgren (Harvard)
−
|Meng Li and Qiang Zhang (Tsinghua)<br>Sajeev Philip (Dalhousie)
+
|GCHP diagnostics
 +
|Simple
 
|
 
|
−
*Already implemented in a research version of GEOS-Chem.
+
*[https://github.com/geoschem/GCHP/pull/395 gchp PR #395]
−
*Code is ready but needs more documentation and evaluation.
+
 
−
|-
+
|-valign="top"
−
|[[PAN|PAN / Organics]]
+
|Only convert units for species that need it
−
|Emily Fischer (CSU)
+
|Bob Yantosca (Harvard)
 +
|Unit conversions
 +
|Medium
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (May 2013)
+
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]
−
|-
+
*'''This update breaks TOMAS, further development is needed'''
−
|CO2 direct effect on isoprene emissions
+
 
−
|Amos Tai (City University of Hong Kong)
+
|}
 +
 
 +
== 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
 +
|TBD
 +
|Delivered<br>June 2023
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
+
*[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
−
|Arctic Hg cycling
+
 
−
|Jenny Fisher (Wollongong)
+
|-valign="top"
 +
|ALK4 & R4N2 chemistry
 +
|Jared Brewer (UMN)
 +
|Chemistry
 +
|TBD
 +
|Not delivered
 
|
 
|
−
*Code is ready
+
*[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.]
−
|Criegee intermediate
+
 
−
|Dylan Millet (U. Minnesota)
+
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/pull/1983 Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition]
 +
|Yanshun Li (WashU)
 +
|Aerosols
 +
|Simple
 +
|Delivered<br>Oct 2023
 
|
 
|
−
*This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
+
*[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]
−
|[[Wet_deposition#Impaction_scavenging_for_hydrophobic_BC_and_homogeneous_IN_removal|Impaction scavenging for hydrophobic BC]]
+
* '''Waiting on code updates from developer'''
−
|Qiaoqiao Wang (Harvard)
+
 
 +
|-valign="top"
 +
|Mass flux regridding fix in MAPL
 +
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
 +
|GCHP input regridding
 +
|Medium
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
 
−
|-
 
−
|[[Wet_deposition#Impaction_scavenging_for_hydrophobic_BC_and_homogeneous_IN_removal|Homogeneous IN removal]]
 
−
|Qiaoqiao Wang (Harvard)
 
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
+
*[https://github.com/GEOS-ESM/MAPL/pull/2056 GEOS-ESM/MAPL PR #2056]
−
|-
+
 
−
|MASAGE NH3 inventory
+
|-valign="top"
−
|Fabien Paulot (Harvard)
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
 +
|Haihui Zhu (WashU)
 +
|Aerosols
 +
|Medium
 +
|Delivered<br>Aug 2023
 
|
 
|
−
*Code is ready, awaiting delivery to GCST
+
*[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]
−
|HTAP and hi-res Asian emissions
+
*'''Currently on hold, as this update requires further modifications in the Cloud-J repository'''
−
|Qiang Zhang (Tsinghua U.)
+
 
 +
|-valign="top"
 +
|Capture all trop and PBL height changes in budget diagnostics
 +
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
 +
|Diagnostics
 +
|Medium
 
|
 
|
−
*Emission files are ready. 
 
−
*Could potentially be packaged w/ the new [[HEMCO|HEMCO Emissions Component]].
 
−
|-
 
−
|Two-way coupling between global and nested GEOS-Chem models
 
−
|Jintai Lin (Peking U.)
 
 
|
 
|
−
*Could be quickly implemented into G-C (http://www.atmos.pku.edu.cn/acm/two-way.html)
+
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
−
|-
+
 
−
|Improve temporal resolution of anthropogenic CO2 sources
+
|}
−
|Ray Nassar (Environment Canada)
+
 
 +
== 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"
 +
|Geologic emission of ethane and propane
 +
|Matthew Rowlinson and Mat Evans(York)
 +
|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
−
|Replace CASA CO2 biosphere climatology with year-specific fluxes
+
 
−
|Ray Nassar (Environment Canada)<br>Dylan Jones (U. Toronto)
+
|-valign="top"
−
|'''''Ray Nassar wrote:'''''
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
:SiB Fluxes are available to replace the old CASA fluxes, courtesy of Janina Messerschmidt et al. New CASA fluxes would also be good, such that the user can select options in the input.geos file.
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
−
|-
+
|Science
−
|[[Mineral_dust_aerosols#Surface_chemistry_on_dust|Acid uptake on dust aerosols]]
+
|Delivered<br>Feb 2021
−
|T. Duncan Fairlie (NASA/LARC)
+
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]], on hold until post v9-02
+
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
−
|-
+
 
−
|UNEP 2010 anthropogenic Hg emissions
+
|-valign="top"
−
|Shaojie Song (MIT)
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
 +
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
 +
|Emissions
 +
|Delivered<br>Jul 2021
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2014)
+
*Data involves many files- need to think about temporal frequency
−
|-
+
 
−
|Historical anthropogenic atmospheric emissions of Hg
+
|-valign="top"
−
|Bess Corbitt (Harvard)
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
 +
|Shixian Zhai (Harvard)
 +
|Emissions
 +
|Delivered
 
|
 
|
−
|-
+
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
−
|Subsurface ocean Hg concentration update
+
 
−
|Anne Soerensen (Harvard)
+
|-valign="top"
 +
|DMS Chemistry
 +
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 +
|Chemistry
 +
|Not delivered
 
|
 
|
−
|-
+
 
−
|NEI 2008 Hg emission inventory
+
|-valign="top"
−
|Yanxu Zhang (Harvard)
+
|Organic acids (RCOOH)
 +
|Katie Travis (NASA)
 +
|Chemistry
 +
|Not delivered
 
|
 
|
−
|-
+
 
−
|RRTMG radiative transfer code in [[APM aerosol microphysics]]
+
|-valign="top"
−
|Fangqun Yu (SUNY Albany)
+
|Improve carbon & nitrogen conservation in reactions
 +
|Kelvin Bates (Harvard)
 +
|Chemistry
 +
|Not delivered
 
|
 
|
−
|-
+
 
−
|[[Biomass_burning_emissions#FINNv1|FINN biomass burning emissions]]
+
|-valign="top"
−
|Jenny Fisher (Wollongong)<br>Min Huang (JPL)
+
|Blowing snow sea salt in TOMAS
 +
|Betty Croft (Dalhousie)
 +
|Aerosols
 +
|Not delivered
 
|
 
|
−
*This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
+
 
−
|-
+
|-valign="top"
−
|[[POPs simulation#PAH simulation|Updates to PAH code]]
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
−
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
 +
|Hg simulation
 +
|Not delivered
 
|
 
|
−
*Awaiting delivery of code
+
 
−
|-
+
|-valign="top"
−
|VBS SOA option
+
|WRF-GC Hg simulation
−
|Rokjin Park (Seoul Nat'l Univ.)
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation<br>WRF-GC
 +
|Not delivered
 
|
 
|
−
|-
+
 
−
|Tagged sulfate and nitrate simulation
+
|-valign="top"
−
|Becky Alexander (U. Washington)
+
|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
−
|[[Mineral_dust_aerosols#Improved_dust_size_distribution_scheme|Improved dust size distribution scheme]]
+
 
−
|Li Zhang (Colorado U.)<br>Daven Henze (Colorado U.)
+
|-valign="top"
−
|
+
|Dry deposition to F90 (readability)
−
*Delivered to GCST (Jan 2014)
+
|Chris Holmes (FSU)
−
|- bgcolor="#ccffff"
+
|Dry deposition
−
!width="400px"|Structural/programming updates
+
|Not delivered
−
!width="300px"|
+
−
!width="400px"|
+
−
|-
+
−
|[[Grid-independent GEOS-Chem]]: Packaging ESMF/MAPL
+
−
|[[GEOS-Chem Support Team]]<br>GMAO
+
 
|
 
|
−
*Need to synchronize the latest GIGC development back into the existing G-C repository
+
 
−
*This will be an ongoing process that will occur simultaneously as the above science updates are brought into GEOS-Chem.
+
 
|}
 
|}
  
−
--[[User:Bmy|Bob Y.]] 16:18, 3 March 2014 (EST)
+
== Almost there (< 6 months) ==
  
−
=== Ready to go in ===
+
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="400px"|Item
+
!width="200px"|Feature
−
!width="300px"|Author(s)
+
!width="200px"|Contributor(s)
−
!width="400px"|Status
+
!width="100px"|Model scope
−
|-
+
!width="420px"|Notes and References
−
|Coupling to 3D ocean: OFFTRACK
+
 
−
|Yanxu Zhang (Harvard)
+
|-valign="top"
 +
|Replace ISORROPIA with [https://gmd.copernicus.org/preprints/gmd-2023-159/gmd-2023-159.pdf HTEPv1.0]
 +
|Seb Eastham (MIT)<br>Lizzie Lundgren (Harvard)
 +
|Aerosol thermodynamics
 
|
 
|
−
|-
+
*Will be git submodule
−
|Dry deposition updates for Hg simulation
+
 
−
|Bess Corbitt (Harvard)
+
|-valign="top"
 +
|PPN+hv, PPN+OH
 +
|Robert Ryan (UCL)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|New Hg soil emissions standard from offline GTMM
+
|-valign="top"
−
|Bess Corbitt (Harvard)
+
|MBO
 +
|Michael Vermeuel (UMN)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Pre- and online processing of emissions
+
|-valign="top"
−
|Qiang Zhang (Tsinghua)<br>Christoph Keller (Harvard)
+
|Initial conditions for CH4 correcting background and stratospheric biases
 +
|Todd Mooring (Harvard)
 +
|Methane simulation
 
|
 
|
−
|-
+
 
−
|Benchmark procedure for nested model
+
|-valign="top"
−
|[[Nested Model Working Group]]
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
 +
|Bob Yantosca (Harvard)
 +
|Aerosols<br>Structural
 
|
 
|
 +
*Ongoing
  
−
|-
+
|-valign="top"
−
|APM v2, synch with v9-02
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
|Fangqun Yu (SUNY Albany)
+
|Betty Croft (Dalhousie)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Retain native resolution 2D surface winds
+
|-valign="top"
−
|David Ridley (MIT)<br>[[GEOS-Chem Support Team]]
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
 +
|Betty Croft (Dalhousie)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|FLEXCHEM
+
|-valign="top"
−
|Mat Evans (York)<br>Mike Long (Harvard)
+
|ML algorithms for bulk aerosols
 +
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
 +
|Aerosols
 
|
 
|
−
*Currently need to add heterogeneous chemistry.
+
 
−
*Looking at Spring 2014 as possible delivery date
+
|-valign="top"
−
|-
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
−
|Develop new coding standards
+
|Shixian Zhai (Harvard)
−
|[[GEOS-Chem Support Team]]
+
|Aerosols
 
|
 
|
−
|-
+
 
−
|[[Grid-independent GEOS-Chem]]: Dry deposition
+
|-valign="top"
−
|[[GEOS-Chem Support Team]]<br>GMAO
+
|Updates to Hodzic SOA scheme
 +
|Jared Brewer (Harvard)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|[[Grid-independent GEOS-Chem]]: NetCDF I/O
+
|-valign="top"
−
|[[GEOS-Chem Support Team]]
+
|Automated reduction in isoprene scheme
 +
|Dan Westervelt (Lamont-Doherty)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|CMS CO2 ocean fluxes
+
|-valign="top"
−
|Kevin Bowman (JPL)
+
|Brown carbon chemsitry
 +
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Dynamic subsurface ocean
+
|-valign="top"
−
|Helen Amos (Harvard)
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
 +
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
 +
|Convection
 
|
 
|
−
|-
+
 
−
|Fix for CH4 concentrations after 2008
+
|-valign="top"
−
|Lee Murray (Harvard)
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
 +
|Jintai Lin (PKU)
 +
|Emissions
 
|
 
|
−
|-
+
*Horizontal resolution: 5km, temporal resolution: JJA mean
−
|Sub-domain within the nested-grid domain
+
*monthly data will be available at a later stage; please contact us
−
|Yuxuan Wang (Tsinghua)<br>Jintai Lin (Peking)
+
 
 +
|-valign="top"
 +
|Updated biomass burning emission factors and species
 +
|Tess Carter (MIT)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|Offline satellite simulator tool
+
|-valign="top"
−
|[[Nested Model Working Group]]
+
|Updated offline sea salt emissions
 +
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|Metal catalyzed oxidation of SO2
+
|-valign="top"
−
|Becky Alexander (U. Washington)
+
|[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]
−
|Sulfate production on aerosol haze
+
*Needs to be updated to a more recent GEOS-Chem version
−
|Yuxuan Wang (Tsinghua)<br>Rokjin Park (Seoul Nat'l Univ.)
+
 
 +
|-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)
−
|Diurnal variation of NH3 emissions
+
 
−
|Daven Henze (UC Boulder)
+
|-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]
−
|Time-varying Arctic parameterizations
+
 
−
|Jenny Fisher (Wollongong)
+
|-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.
−
|Future US emissions inventories of Hg
+
 
−
|Amanda Giang (MIT)
+
|-valign="top"
 +
|Hybrid MPI-OpenMP in GCHP
 +
|Seb Eastham (MIT)<br>Killian Murphy (York)
 +
|Model performance
 
|
 
|
−
|-
+
 
−
|Coastal inputs of Hg: Rivers and anthropogenic point sources
+
|-valign="top"
−
|Helen Amos (Harvard)
+
|Improve run directory templating and creation with init_rd.sh and shared directories
 +
|Jourdan He (WashU)
 +
|Run directories
 
|
 
|
−
|-
+
 
−
|Complete revamp of [[Mercury#GTMM|GTMM]]
+
|-valign="top"
−
|Bess Corbitt (Harvard)
+
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
 +
|GCST?
 +
|Documentation
 
|
 
|
−
|-
+
 
−
|Dust PDF for global simulations
+
−
|David Ridley (MIT)
+
−
|
+
−
|-
+
−
|Benchmark for aerosol deposition
+
−
|[[Aerosols overview: projects and developments|Aerosols Working Group]]
+
−
|
+
−
|-
+
−
|[http://acmg.seas.harvard.edu/publications/murray.2013.jgr.pdf Interannual lightning]
+
−
|Lee Murray (Harvard)
+
−
|
+
−
*Available for GEOS-4, but still needs to be implemented in GEOS-5
+
 
|}
 
|}
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
+
== Over the horizon (6-12 months) ==
  
−
=== Almost there (< 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
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
−
!width="400px"|Item
+
!width="200px"|Feature
−
!width="300px"|Author(s)
+
!width="200px"|Contributor(s)
−
!width="400px"|Status
+
!width="100px"|Model scope
−
|-
+
!width="420px"|Notes and References
−
|Updates to redox chemistry for Hg simulation
+
 
−
|Bess Corbitt (Harvard)
+
|-valign="top"
 +
|Snow / Icy Bromine
 +
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|High-resolution regional emissions
+
|-valign="top"
−
|[[Nested Model Working Group]]
+
|Monoterpene oxidation scheme
 +
|Jessica Haskins (MIT)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Flexible diagnostic package
+
|-valign="top"
−
|[[GEOS-Chem Support Team]]
+
|Fire related VOCs including furans
 +
|Lu Hu (UMT)<br>Lixu Jin (UMT)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|[[Grid-independent GEOS-Chem]]: Convection
+
|-valign="top"
−
|TBD
+
|Extension of UCX into the mesosphere
−
|[[GEOS-Chem Support Team|GCST]] needs help from community
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
−
|-
+
|Chemistry
−
|[[Grid-independent GEOS-Chem]]: Wet scavenging
+
−
|TBD
+
−
|[[GEOS-Chem Support Team|GCST]] needs help from community
+
−
|-
+
−
|[[Grid-independent GEOS-Chem]]: PBL mixing
+
−
|Sajeev Philip (Dalhousie)<br>Christoph Keller (Harvard)<br>GMAO
+
 
|
 
|
−
|-
+
 
−
|[[Grid-independent GEOS-Chem]]: Transport
+
|-valign="top"
−
|TBD
+
|Methane flux ingestion
−
|[[GEOS-Chem Support Team|GCST]] needs help from community
+
|Eloise Marais (UCL)
−
|-
+
|Chemistry
−
|3D VOC source for tagged CO simulation and enhanced tagging of secondary CO
+
−
|Jenny Fisher (Wollongong)
+
 
|
 
|
−
|-
+
 
−
|Satellite diagnostic for XCO2
+
|-valign="top"
−
|Andrew Schuh (CSU)
+
|Dust non-sphericity impacts on surface chem and optical properties
 +
|Inderjeet Singh (WashU)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Dynamic precision
+
|-valign="top"
−
|[[GEOS-Chem Support Team]]
+
|Size-resolved stratospheric aerosol
 +
|Seb Eastham (MIT)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Profiling GEOS-Chem
+
|-valign="top"
−
|TBD
+
|Extend aerosol settling
 +
|Eloise Marais (UCL)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Methylmercury in the surface ocean
+
|-valign="top"
−
|Anne Soerensen (Harvard)
+
|Stratospheric aerosol APM
 +
|Fangqun Yu (SUNY)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Primary marine emissions of OA
+
|-valign="top"
−
|Brett Gantt (NCSU)
+
|Plume-in-grid model
 +
|Hongwei Sun (Harvard)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Recommendations for optimal timesteps
+
|-valign="top"
−
|Sajeev Philip (Dalhousie)
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
 +
|Lee Murray (Rochester)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|DMS oxidation scheme updating (DMSO, oxidation by BrO)
+
|-valign="top"
−
|Tom Breider (Harvard)<br>Becky Alexander (U. Washington)
+
|Seb aircraft emissions beyond recent 2019 update
 +
|Seb Eastham (MIT)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|More options for terrestrial CO2 fluxes
+
|-valign="top"
−
|Kevin Bowman (JPL)
+
|FRP-based fire emsisions for eastern US at 0.2 deg
 +
|Charlie Fite (FSU)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|Merge organics from specialized simulations into the mainline code
+
|-valign="top"
−
|Dylan Millet (U. Minnesota)
+
|Hg iodine chemistry
 +
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation
 
|
 
|
−
|}
 
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
+
|-valign="top"
 +
|Hg simulation in GCHP
 +
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
 +
|Hg simulation
 +
|
  
−
=== Over the horizon (6-12 months) ===
+
|-valign="top"
 +
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
 +
|Yanxu Zhang (Nanjing U.)
 +
|Hg simulation
 +
|
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|- bgcolor="#cccccc"
+
|Dry deposition diagnostics by land cover
−
!width="400px"|Item
+
|Holly Nowell (FSU)
−
!width="300px"|Author(s)
+
|Diagnostics
−
!width="400px"|Status
+
−
|-
+
−
|Coupling to 3D ocean: MIT ocean GCM
+
−
|Yanxu Zhang (Harvard)
+
 
|
 
|
−
|-
+
 
−
|[[Python code for GEOS-Chem|Python interface]]
+
|-valign="top"
−
|Beno&icirc;t Bovy (U. Li&egrave;ge-Belgium) + others
+
|Dry deposition process diagnostics
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 
|
 
|
−
|-
+
 
−
|Uniformity of units
+
|-valign="top"
−
|[[GEOS-Chem Support Team]]
+
|Isotope simulation for CO and CH4 in GCHP
 +
|Lee Murray (Rochester)
 +
|Carbon simulation
 
|
 
|
−
|-
+
 
−
|Historical inventory of Hg in products and processes
+
|-valign="top"
−
|Hannah Horowitz (Harvard)
+
|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
 
|
 
|
−
|-
+
 
−
|Better link/coupling to ocean processes
+
|-valign="top"
−
|[[Chemistry-Climate Working Group]]
+
|Modularization of aerosols code for interface with GOCART in GEOS
 +
|Christoph Keller (GMAO)
 +
|Structural
 
|
 
|
−
|-
+
 
−
|Better coupling to biogeochemical cycles
+
|-valign="top"
−
|[[Chemistry-Climate Working Group]]
+
|Improve load balancing in GCHP
 +
|Seb Eastham (MIT)
 +
|Model performance
 
|
 
|
−
|-
+
 
−
|Chemistry feedbacks to vegetation ecosystem
+
|-valign="top"
−
|Amos Tai (MIT)
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
 +
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
 +
|Transport
 
|
 
|
−
|-
+
 
−
|Iodine chemistry
+
|-valign="top"
−
|Tom&aacute;s Sherwen (York)
+
|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
 
|
 
|
−
|-
+
 
−
|Harmonization of aerosol optics (including water uptake)
+
|-valign="top"
−
|David Ridley(MIT)<br>Colette Heald (MIT)<br>Peter Adams (Carnegie Mellon)<br>Fangqun Yu (SUNY Albany)<br>Gabriele Curci (U. L'Aquila)<br>Randall Martin (Dalhousie)
+
|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
 
|
 
|
−
|-
+
 
−
|[[Grid-independent GEOS-Chem]]: Ocean interface
+
|}
−
|Yanxu Zhang (Harvard)
+
 
 +
== 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 and References
 +
 
 +
|-valign="top"
 +
|Updates to Aromatic chemistry
 +
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Updated LAI
+
|-valign="top"
−
|Kevin Bowman (JPL)<br>Folkert Boersma (KNMI)
+
|Nitrate photolysis
 +
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Merge dicarbonyl simulation into standard simulation
+
|-valign="top"
−
|Tzung-May Fu (Peking)
+
|In aerosol chemistry Halogens
 +
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Global 0.5x0.667 capability for CO2/CH4
+
|-valign="top"
−
|Liang Feng (Edinburgh)<br>Dylan Jones (U. Toronto)
+
|Benchmark box model of GC Chemistry
 +
|Katie Travis (NASA)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Dynamic multiple boxes subsurface Arctic Ocean
+
|-valign="top"
−
|Helen Amos (Harvard)<br>Anne Soerensen (Harvard)
+
|Alkyl nitrates Alk7, PHAN
 +
|Katie Travis (NASA)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|[[POPs simulation#PCB simulation|PCB simulation: atmosphere and ocean]]
+
|-valign="top"
−
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
+
|Add stratospheric ozone species to full-chemistry simulations
 +
|Lee Murray (Rochester)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Nighttime isoprene chemistry
+
|-valign="top"
−
|Rebecca Schwantes (Caltech)
+
|Perchlorate chemistry
 +
|Yuk Chun Chan (UWAB)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|ClNO2
+
|-valign="top"
−
|Mat Evans (York)
+
|Explicit heterogeneous sulfate chemistry
 +
|Katie Travis (NASA)<br>Becky Alexander (UT)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Dissolved Fe/Cu
+
|-valign="top"
−
|Matthew Johnson (NCSU)<br>Jingqiu Mao (NOAA/GFDL)
+
|HOx and ozone "emissions" from lightning as option in model to play with
 +
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|UV absorption of organics/brown carbon
+
|-valign="top"
−
|Rokjin Park (Seoul Nat'l Univ.)
+
|Sea salt aerosol from sea ice leads
 +
|Hannah Horowitz (U. Illinois)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|CO-CO2-CH4 simulation
+
|-valign="top"
−
|Dylan Jones (U. Toronto)<br>Annemarie Fraser (Edinburgh)
+
|Drought-stress algorithm
 +
|Wei Li (U. Houston)
 
|
 
|
−
|-
 
−
|Updated HCN simulation
 
−
|Dylan Jones (U. Toronto)
 
 
|
 
|
−
|-
+
 
−
|[[Adding_Passive_Tracers|Passive tracer module]]
+
|-valign="top"
−
|Jenny Fisher (Wollongong)
+
|Biomass burning injection height profiles
 +
|Inderjeet Singh (WashU)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|OCIM integration
 +
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
 
|
 
|
−
'''''[mailto:jennyf@uow.edu.au Jenny Fisher] wrote:'''''
 
−
:Passive tracers will not (at this stage) be added as a standard feature of GEOS-Chem, but can be implemented by individual users relatively straightforwardly.  We have added this to the SEAC4RS research version of GEOS-Chem.
 
−
|-
 
−
|Plume in-grid lightning NOx emissions
 
−
|Alicia Gressent (U. Toulouse)
 
 
|
 
|
−
|}
 
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
+
|-valign="top"
 +
|Updating landcover products in GEOS-Chem
 +
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
 +
|Input data
 +
|
  
−
=== Longer term (12-24 months)===
+
|-valign="top"
 +
|Dry deposition physical improvement
 +
|Chris Holmes (FSU)
 +
|Dry deposition
 +
|
  
−
TBD
+
|-valign="top"
 +
|TOMAS WRF-GC in regional Thailand simulation
 +
|Win Trivitayanurak (Chulalongkorn U)
 +
|Aerosols
 +
|
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
+
|}

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
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