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 2015 ==
+
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]]'''
 +
 
 +
|}
 +
 
 +
== 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
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Ease of implementation
 +
!width="300px"|Notes and References
  
−
{| border=1 cellspacing=0 cellpadding=5
 
−
|- bgcolor="#cccccc"
 
−
!width="400px"|Item
 
−
!width="300px"|Author(s)
 
−
!width="400px"|Status
 
−
|- bgcolor="#ccffff"
 
−
!width="400px"|Science updates
 
−
!width="300px"|
 
−
!width="400px"|
 
 
|-valign="top"
 
|-valign="top"
−
|[[TOMAS_aerosol_microphysics#Updates_for_GEOS-Chem_v9-02_public_release|TOMAS parallelization]]
+
|KORUS-AQ emissions for East Asia (as an option)
−
|Sal Farina (CSU)<br>Jeff Pierce (CSU)<br>[[GEOS-Chem Support Team]]
+
|Katie Travis (NASA)
 +
|Emissions
 +
|Simple
 
|
 
|
−
*Implemented in the [[GEOS-Chem v9-02]] public release (03 Mar 2014)
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[UCX chemistry mechanism|UCX strat chem mechanism]], includes:
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
*[[UCX chemistry mechanism|Stratospheric chemistry]]
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
*[[UCX chemistry mechanism|Stratospheric aerosols]]
+
|Emissions
−
*[[FAST-JX v7.0 photolysis mechanism]]
+
|Simple
−
|UCX: Sebastian Eastham (MIT)<br>Fast-JX: Sebastian Eastham (MIT) and Jingqiu Mao (Princeton)
+
 
|
 
|
−
*Implemented into GEOS-Chem v10-01c
 
−
**[[GEOS-Chem v10-01 benchmark history#v10-01c|1-month benchmarks]] approved on 29 May 2014
 
−
**[[GEOS-Chem_v10-01_benchmark_history#v10-01c-Run1|1-year benchmarks]] approved on 26 Jun 2014
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[HEMCO|HEMCO emissions component]]
+
|New version of CEDS at 0.1 deg
−
|Christoph Keller (Harvard)<br>[[GEOS-Chem Support Team]]<br>GMAO
+
|Dandan Zhang (WashU)
 +
|Emissions
 +
|Simple
 
|
 
|
−
*Implemented into GEOS-Chem v10-01e
+
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
−
**[[GEOS-Chem v10-01 benchmark history#v10-01e|1-month benchmark]] approved on 07 Nov 2014
+
*'''Currently on hold while an issue with seasonality in the new CEDS data is being investigated'''
−
**[[GEOS-Chem_v10-01_benchmark_history#v10-01e-Run0|1-year benchmark]] approved on 01 Dec 2014
+
 
 
|-valign="top"
 
|-valign="top"
−
|[[Two-way coupling between global and nested GEOS-Chem models]]
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
−
|Jintai Lin (Peking U.)<br>Yingying Yan (Peking U.)
+
|Haihui Zhu (WashU)
 +
|Aerosols
 +
|Medium
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jul 2014)
+
*[https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1292/ Zhu et al., EGUsphere, submitted 2023.]
−
*Implemented into GEOS-Chem v10-01f
+
*[https://github.com/geoschem/geos-chem/pull/1902 geos-chem PR #1902]
−
**[[GEOS-Chem v10-01 benchmark history#v10-01f|1-month benchmark]] approved on 13 Jan 2015
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[EPA/NEI08 North American emissions|NEI 2008 emissions with hourly resolution]]
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|Katie Travis (Harvard)
+
|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]
−
*Slated for inclusion into [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
+
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_biogenic_emissions#Update_to_MEGAN2.1_.28Guenther_et_al..2C_2012.29|Update to MEGAN2.1]]
+
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
−
|Dylan Millet (U. Minnesota)
+
|Lizzie Lundgren (Harvard)
 +
|GC-Classic
 +
|Medium
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Summer 2013)
+
*[https://github.com/geoschem/HEMCO/issues/18 hemco issue #18]
−
*Implemented in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[EDGAR anthropogenic emissions|Update to EDGAR 4.2 anthropogenic emissions]]
+
|Replace ISORROPIA with [https://gmd.copernicus.org/articles/17/2197/2024/ HETPv1.0]
−
|Meng Li and Qiang Zhang (Tsinghua)<br>Sajeev Philip (Dalhousie)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (ICL)
 +
|Aerosol thermodynamics
 +
|Medium
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Apr 2014)
+
*[https://github.com/geoschem/geos-chem/issues/2235 geos-chem issue #2235]
−
*Implemented in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[MASAGE NH3 inventory]]
+
|Only convert units for species that need it
−
|Fabien Paulot (NOAA, formerly Harvard)
+
|Bob Yantosca (Harvard)
 +
|Unit conversions
 +
|Medium
 
|
 
|
−
*Delivered to GCST (Jan 2015)
+
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]
−
*Included in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[FINN biomass burning emissions]]
+
|Capture all trop and PBL height changes in budget diagnostics
−
|Jenny Fisher (Wollongong)<br>Jingqiu Mao (Princeton)<br>Christine Wiedinmyer (NCAR)
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
 +
|Diagnostics
 +
|Medium
 
|
 
|
−
*Implemented in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
+
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 +
 
 +
|}
 +
 
 +
== Prioritized and in the queue ==
 +
 
 +
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
 +
 
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Ease of implementation
 +
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[http://edgar.jrc.ec.europa.eu/htap_v2/index.php?SECURE=123 HTAP global emissions] and [http://mix.greenresource.cn/ MIX hi-res Asian emissions]
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
−
|Qiang Zhang (Tsinghua U.)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
 +
|Chemistry
 +
|TBD
 +
|Delivered<br>June 2023
 
|
 
|
−
*Implemented in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
+
*[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"
−
|UNEP 2010 anthropogenic Hg emissions
+
|ALK4 & R4N2 chemistry
−
|Shaojie Song (MIT)
+
|Jared Brewer (UMN)
 +
|Chemistry
 +
|TBD
 +
|Not delivered
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2014)
+
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
−
*Slated for inclusion to [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]]
+
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., submitted 2023.]
  
 
|-valign="top"
 
|-valign="top"
−
|[[Ship_emissions#Updates_to_ship_NOx_chemistry|Updates to ship NOx chemistry]]
+
|Mass flux regridding fix in MAPL
−
|Chris Holmes (UC Irvine)<br>Geert Vinken (Eindhoven)
+
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
 +
|GCHP input regridding
 +
|Medium
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jun 2014)
+
|
−
*Included in [[GEOS-Chem v10-01 benchmark history#v10-01h|GEOS-Chem v10-01h]], awaiting validation
+
*[https://github.com/geoschem/GCHP/issues/377 GCHP Issue #377]
 +
*'''Currently on hold, as the submitted update results in zero diff'''
 +
 
 +
|}
 +
 
 +
== 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"
−
|Improve temporal resolution of anthropogenic CO2 sources
+
|Geologic emission of ethane and propane
−
|Ray Nassar (Environment Canada)
+
|Matthew Rowlinson and Mat Evans(York)
 +
|Emissions
 +
|Delivered<br>Jan 2023
 
|
 
|
−
*Slated for inclusion to [[GEOS-Chem v10-01 benchmark history#v10-01i|GEOS-Chem v10-01i]], awaiting validation
+
*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"
−
|Replace CASA CO2 biosphere climatology with year-specific fluxes
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
|Ray Nassar (Environment Canada)<br>Dylan Jones (U. Toronto)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
−
|'''''Ray Nassar wrote:'''''
+
|Science
−
: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.
+
|Delivered<br>Feb 2021
−
*Slated for inclusion in [[GEOS-Chem v10-01 benchmark history#v10-01i|GEOS-Chem v10-01i]]
+
|
 +
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
−
|[[Coupling GEOS-Chem with RRTMG|Online Radiative Transfer in GEOS-Chem]]
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|David Ridley (MIT)<br>Colette Heald (MIT)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
 +
|Emissions
 +
|Delivered<br>Jul 2021
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Oct 2013)
+
*Data involves many files- need to think about temporal frequency
−
*Slated for inclusion in [[GEOS-Chem v10-01 benchmark history#v10-01i|GEOS-Chem v10-01i]]
+
  
 
|-valign="top"
 
|-valign="top"
−
|NEI 2008 Hg emission inventory
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
−
|Yanxu Zhang (Harvard)
+
|Shixian Zhai (Harvard)
 +
|Emissions
 +
|Delivered
 
|
 
|
−
*This update will be added via [[HEMCO]]. It can be lumped w/ other emissions updates (order TBD).
+
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
−
*Postponed until after the GEOS-Chem v10-01 release.
+
  
 
|-valign="top"
 
|-valign="top"
−
|Historical anthropogenic atmospheric emissions of Hg
+
|DMS Chemistry
−
|Bess Corbitt (Harvard)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 +
|Chemistry
 +
|Not delivered
 
|
 
|
−
*Postponed until after the GEOS-Chem v10-01 release.
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[PAN|PAN / Organics]]
+
|Organic acids (RCOOH)
−
|Emily Fischer (CSU)
+
|Katie Travis (NASA)
 +
|Chemistry
 +
|Not delivered
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (May 2013)
 
  
 
|-valign="top"
 
|-valign="top"
−
|Subsurface ocean Hg concentration update
+
|Improve carbon & nitrogen conservation in reactions
−
|Anne Soerensen (Harvard)
+
|Kelvin Bates (Harvard)
 +
|Chemistry
 +
|Not delivered
 
|
 
|
−
*Postponed until after the GEOS-Chem v10-01 release.
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_biogenic_emissions#CO2_direct_effect_on_isoprene_emissions|CO2 direct effect on isoprene emissions]]
+
|Blowing snow sea salt in TOMAS
−
|Amos Tai (City University of Hong Kong)
+
|Betty Croft (Dalhousie)
 +
|Aerosols
 +
|Not delivered
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
 
−
*Postponed until after the GEOS-Chem v10-01 release.
 
  
 
|-valign="top"
 
|-valign="top"
−
|Arctic Hg cycling
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
−
|Jenny Fisher (Wollongong)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
 +
|Hg simulation
 +
|Not delivered
 
|
 
|
−
*Code is ready
 
−
*Postponed until after the GEOS-Chem v10-01 release.
 
  
 
|-valign="top"
 
|-valign="top"
−
|Criegee intermediate
+
|WRF-GC Hg simulation
−
|Dylan Millet (U. Minnesota)
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation<br>WRF-GC
 +
|Not delivered
 
|
 
|
−
*This has already been added to the research version of GEOS-Chem used to produce the SEAC4RS hindcasts
 
−
*Postponed until after the GEOS-Chem v10-01 release.
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Wet_deposition#Impaction_scavenging_for_hydrophobic_BC_and_homogeneous_IN_removal|Impaction scavenging for hydrophobic BC]]
+
|Updated HgII gas-partical partitioning
−
|Qiaoqiao Wang (Harvard)
+
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
 +
|Hg simulation
 +
|Not delivered
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
+
*Should be option, not default
−
*Postponed until after the GEOS-Chem v10-01 release.
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[Wet_deposition#Impaction_scavenging_for_hydrophobic_BC_and_homogeneous_IN_removal|Homogeneous IN removal]]
+
|Dry deposition to F90 (readability)
−
|Qiaoqiao Wang (Harvard)
+
|Chris Holmes (FSU)
 +
|Dry deposition
 +
|Not delivered
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2013)
+
 
−
*Postponed until after the GEOS-Chem v10-01 release.
+
|}
 +
 
 +
== 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
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[[Mineral_dust_aerosols#Surface_chemistry_on_dust|Acid uptake on dust aerosols]]
+
|Replace ISORROPIA with [https://gmd.copernicus.org/preprints/gmd-2023-159/gmd-2023-159.pdf HTEPv1.0]
−
|T. Duncan Fairlie (NASA/LARC)
+
|Seb Eastham (MIT)<br>Lizzie Lundgren (Harvard)
 +
|Aerosol thermodynamics
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]], on hold until post v9-02
+
*Will be git submodule
−
*Postponed until after the GEOS-Chem v10-01 release.
+
  
 
|-valign="top"
 
|-valign="top"
−
|RRTMG radiative transfer code in [[APM aerosol microphysics]]
+
|PPN+hv, PPN+OH
−
|Fangqun Yu (SUNY Albany)
+
|Robert Ryan (UCL)
 +
|Chemistry
 
|
 
|
−
*Postponed until after the GEOS-Chem v10-01 release.
 
  
−
|-
+
|-valign="top"
−
|[[POPs simulation#PAH simulation|Updates to PAH code]]
+
|MBO
−
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
+
|Michael Vermeuel (UMN)
 +
|Chemistry
 
|
 
|
−
*Awaiting delivery of code
 
  
 
|-valign="top"
 
|-valign="top"
−
|VBS SOA option
+
|Initial conditions for CH4 correcting background and stratospheric biases
−
|Rokjin Park (Seoul Nat'l Univ.)
+
|Todd Mooring (Harvard)
 +
|Methane simulation
 
|
 
|
−
*Postponed until after the GEOS-Chem v10-01 release.
 
  
−
|-
+
|-valign="top"
−
|Tagged sulfate and nitrate simulation
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Becky Alexander (U. Washington)
+
|Bob Yantosca (Harvard)
 +
|Aerosols<br>Structural
 
|
 
|
−
*Postponed until after the GEOS-Chem v10-01 release.
+
*Ongoing
  
 
|-valign="top"
 
|-valign="top"
−
|[[Mineral_dust_aerosols#Improved_dust_size_distribution_scheme|Improved dust size distribution scheme]]
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
|Li Zhang (Colorado U.)<br>Daven Henze (Colorado U.)
+
|Betty Croft (Dalhousie)
 +
|Aerosols
 
|
 
|
−
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2014)
 
−
*Postponed until after the GEOS-Chem v10-01 release.
 
  
−
|-bgcolor="#ccffff" valign="top"
+
|-valign="top"
−
!width="400px"|Structural/programming updates for HPC
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
−
!width="300px"|  
+
|Betty Croft (Dalhousie)
−
!width="400px"|
+
|Aerosols
−
|-
+
−
|[[Grid-independent GEOS-Chem]]: Packaging ESMF/MAPL
+
−
|[[GEOS-Chem Support Team]]<br>GMAO
+
 
|
 
|
−
*This will be an ongoing process that will occur simultaneously as the above science updates are brought into GEOS-Chem.
 
−
|}
 
  
−
--[[User:Bmy|Bob Y.]] 11:37, 5 March 2015 (EST)
+
|-valign="top"
 +
|ML algorithms for bulk aerosols
 +
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
 +
|Aerosols
 +
|
  
−
=== Ready to go in ===
+
|-valign="top"
 +
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
 +
|Shixian Zhai (Harvard)
 +
|Aerosols
 +
|
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|- bgcolor="#cccccc"
+
|Updates to Hodzic SOA scheme
−
!width="400px"|Item
+
|Jared Brewer (Harvard)
−
!width="300px"|Author(s)
+
|Aerosols
−
!width="400px"|Status
+
−
|-
+
−
|Coupling to 3D ocean: OFFTRACK
+
−
|Yanxu Zhang (Harvard)
+
 
|
 
|
−
|-
+
 
−
|Dry deposition updates for Hg simulation
+
|-valign="top"
−
|Bess Corbitt (Harvard)
+
|Automated reduction in isoprene scheme
 +
|Dan Westervelt (Lamont-Doherty)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|New Hg soil emissions standard from offline GTMM
+
|-valign="top"
−
|Bess Corbitt (Harvard)
+
|Brown carbon chemsitry
 +
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Pre- and online processing of emissions
+
|-valign="top"
−
|Qiang Zhang (Tsinghua)<br>Christoph Keller (Harvard)
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
 +
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
 +
|Convection
 
|
 
|
−
|-
+
 
−
|Benchmark procedure for nested model
+
|-valign="top"
−
|[[Nested Model Working Group]]
+
|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"
−
|APM v2, synch with v9-02
+
|Updated biomass burning emission factors and species
−
|Fangqun Yu (SUNY Albany)
+
|Tess Carter (MIT)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|Retain native resolution 2D surface winds
+
|-valign="top"
−
|David Ridley (MIT)<br>[[GEOS-Chem Support Team]]
+
|Updated offline sea salt emissions
 +
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|FLEXCHEM
+
|-valign="top"
−
|Mat Evans (York)<br>Mike Long (Harvard)
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
 +
|Sam Silva (MIT)
 +
|Emissions &<br>Science
 
|
 
|
−
*Currently need to add heterogeneous chemistry.
+
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
−
*Looking at Spring 2014 as possible delivery date
+
*Needs to be updated to a more recent GEOS-Chem version
−
|-
+
 
−
|Develop new coding standards
+
|-valign="top"
−
|[[GEOS-Chem Support Team]]
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
 +
|Bob Yantosca (Harvard)
 +
|Model performance
 
|
 
|
−
|-
+
*Ongoing (will be done as time allows)
−
|[[Grid-independent GEOS-Chem]]: Dry deposition
+
 
−
|[[GEOS-Chem Support Team]]<br>GMAO
+
|-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]
−
|[[Grid-independent GEOS-Chem]]: NetCDF I/O
+
 
−
|[[GEOS-Chem Support Team]]
+
|-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.
−
|CMS CO2 ocean fluxes
+
 
−
|Kevin Bowman (JPL)
+
|-valign="top"
 +
|Hybrid MPI-OpenMP in GCHP
 +
|Seb Eastham (MIT)<br>Killian Murphy (York)
 +
|Model performance
 
|
 
|
−
|-
+
 
−
|Dynamic subsurface ocean
+
|-valign="top"
−
|Helen Amos (Harvard)
+
|Improve run directory templating and creation with init_rd.sh and shared directories
 +
|Jourdan He (WashU)
 +
|Run directories
 
|
 
|
−
|-
+
 
−
|Fix for CH4 concentrations after 2008
+
|-valign="top"
−
|Lee Murray (Harvard)
+
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
 +
|GCST?
 +
|Documentation
 
|
 
|
−
|-
+
 
−
|Sub-domain within the nested-grid domain
+
|}
−
|Yuxuan Wang (Tsinghua)<br>Jintai Lin (Peking)
+
 
 +
== 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
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes and References
 +
 
 +
|-valign="top"
 +
|Snow / Icy Bromine
 +
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Offline satellite simulator tool
+
|-valign="top"
−
|[[Nested Model Working Group]]
+
|Monoterpene oxidation scheme
 +
|Jessica Haskins (MIT)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Metal catalyzed oxidation of SO2
+
|-valign="top"
−
|Becky Alexander (U. Washington)
+
|Fire related VOCs including furans
 +
|Lu Hu (UMT)<br>Lixu Jin (UMT)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Sulfate production on aerosol haze
+
|-valign="top"
−
|Yuxuan Wang (Tsinghua)<br>Rokjin Park (Seoul Nat'l Univ.)
+
|Extension of UCX into the mesosphere
 +
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Diurnal variation of NH3 emissions
+
|-valign="top"
−
|Daven Henze (UC Boulder)
+
|Methane flux ingestion
 +
|Eloise Marais (UCL)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Time-varying Arctic parameterizations
+
|-valign="top"
−
|Jenny Fisher (Wollongong)
+
|Dust non-sphericity impacts on surface chem and optical properties
 +
|Inderjeet Singh (WashU)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Future US emissions inventories of Hg
+
|-valign="top"
−
|Amanda Giang (MIT)
+
|Size-resolved stratospheric aerosol
 +
|Seb Eastham (MIT)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Coastal inputs of Hg: Rivers and anthropogenic point sources
+
|-valign="top"
−
|Helen Amos (Harvard)
+
|Extend aerosol settling
 +
|Eloise Marais (UCL)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Complete revamp of [[Mercury#GTMM|GTMM]]
+
|-valign="top"
−
|Bess Corbitt (Harvard)
+
|Stratospheric aerosol APM
 +
|Fangqun Yu (SUNY)
 +
|Aerosols
 
|
 
|
−
|-
+
 
−
|Dust PDF for global simulations
+
|-valign="top"
−
|David Ridley (MIT)
+
|Plume-in-grid model
 +
|Hongwei Sun (Harvard)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Benchmark for aerosol deposition
+
|-valign="top"
−
|[[Aerosols overview: projects and developments|Aerosols Working Group]]
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
 +
|Lee Murray (Rochester)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|Primary marine emissions of OA
+
|-valign="top"
−
|Brett Gantt (NCSU)<br>Matthew Johnson (NASA ARC)
+
|Seb aircraft emissions beyond recent 2019 update
 +
|Seb Eastham (MIT)
 +
|Emissions
 
|
 
|
−
*Manuscript submitted to GMD (Aug 2014)
+
 
−
|-
+
|-valign="top"
−
|[http://acmg.seas.harvard.edu/publications/murray.2013.jgr.pdf Interannual lightning]
+
|FRP-based fire emsisions for eastern US at 0.2 deg
−
|Lee Murray (Harvard)
+
|Charlie Fite (FSU)
 +
|Emissions
 
|
 
|
−
*Available for GEOS-4, but still needs to be implemented in GEOS-5
 
−
|}
 
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] 17:45, 19 August 2014 (EDT)
+
|-valign="top"
 +
|Hg iodine chemistry
 +
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation
 +
|
  
−
=== Almost there (< 6 months) ===
+
|-valign="top"
 +
|Hg simulation in GCHP
 +
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
 +
|Hg simulation
 +
|
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|- bgcolor="#cccccc"
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
−
!width="400px"|Item
+
|Yanxu Zhang (Nanjing U.)
−
!width="300px"|Author(s)
+
|Hg simulation
−
!width="400px"|Status
+
−
|-
+
−
|Updates to redox chemistry for Hg simulation
+
−
|Bess Corbitt (Harvard)
+
 
|
 
|
−
|-
+
 
−
|High-resolution regional emissions
+
|-valign="top"
−
|[[Nested Model Working Group]]
+
|Dry deposition diagnostics by land cover
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 
|
 
|
−
|-
+
 
−
|Flexible diagnostic package
+
|-valign="top"
−
|[[GEOS-Chem Support Team]]
+
|Dry deposition process diagnostics
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 
|
 
|
−
|-
+
 
−
|[[Grid-independent GEOS-Chem]]: Convection
+
|-valign="top"
−
|TBD
+
|Isotope simulation for CO and CH4 in GCHP
−
|[[GEOS-Chem Support Team|GCST]] needs help from community
+
|Lee Murray (Rochester)
−
|-
+
|Carbon simulation
−
|[[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
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
−
|[[GEOS-Chem Support Team|GCST]] needs help from community
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
−
|-
+
|Emissions<br>CH4 simulation
−
|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)
+
|Modularization of aerosols code for interface with GOCART in GEOS
 +
|Christoph Keller (GMAO)
 +
|Structural
 
|
 
|
−
|-
+
 
−
|Dynamic precision
+
|-valign="top"
−
|[[GEOS-Chem Support Team]]
+
|Improve load balancing in GCHP
 +
|Seb Eastham (MIT)
 +
|Model performance
 
|
 
|
−
|-
+
 
−
|Profiling GEOS-Chem
+
|-valign="top"
−
|TBD
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
 +
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
 +
|Transport
 
|
 
|
−
|-
+
 
−
|Methylmercury in the surface ocean
+
|-valign="top"
−
|Anne Soerensen (Harvard)
+
|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
 
|
 
|
−
|-
+
 
−
|Recommendations for optimal timesteps
+
|-valign="top"
−
|Sajeev Philip (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
−
|DMS oxidation scheme updating (DMSO, oxidation by BrO)
+
−
|Tom Breider (Harvard)<br>Becky Alexander (U. Washington)
+
−
|
+
−
|-
+
−
|More options for terrestrial CO2 fluxes
+
−
|Kevin Bowman (JPL)
+
−
|
+
−
|-
+
−
|Merge organics from specialized simulations into the mainline code
+
−
|Dylan Millet (U. Minnesota)
+
 
|
 
|
 +
 
|}
 
|}
  
−
--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
+
== Longer term (12-24 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 12-24 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
−
|Coupling to 3D ocean: MIT ocean GCM
+
 
−
|Yanxu Zhang (Harvard)
+
|-valign="top"
 +
|Updates to Aromatic chemistry
 +
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|[[Python code for GEOS-Chem|Python interface]]
+
|-valign="top"
−
|Beno&icirc;t Bovy (U. Li&egrave;ge-Belgium) + others
+
|Nitrate photolysis
 +
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Uniformity of units
+
|-valign="top"
−
|[[GEOS-Chem Support Team]]
+
|In aerosol chemistry Halogens
 +
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Historical inventory of Hg in products and processes
+
|-valign="top"
−
|Hannah Horowitz (Harvard)
+
|Benchmark box model of GC Chemistry
 +
|Katie Travis (NASA)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Better link/coupling to ocean processes
+
|-valign="top"
−
|[[Chemistry-Climate Working Group]]
+
|Alkyl nitrates Alk7, PHAN
 +
|Katie Travis (NASA)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Better coupling to biogeochemical cycles
+
|-valign="top"
−
|[[Chemistry-Climate Working Group]]
+
|Add stratospheric ozone species to full-chemistry simulations
 +
|Lee Murray (Rochester)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Chemistry feedbacks to vegetation ecosystem
+
|-valign="top"
−
|Amos Tai (MIT)
+
|Perchlorate chemistry
 +
|Yuk Chun Chan (UWAB)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|Iodine chemistry
+
|-valign="top"
−
|Tom&aacute;s Sherwen (York)
+
|Explicit heterogeneous sulfate chemistry
 +
|Katie Travis (NASA)<br>Becky Alexander (UT)
 +
|Chemistry
 
|
 
|
−
|-
+
 
−
|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)
+
|HOx and ozone "emissions" from lightning as option in model to play with
 +
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|[[Grid-independent GEOS-Chem]]: Ocean interface
+
|-valign="top"
−
|Yanxu Zhang (Harvard)
+
|Sea salt aerosol from sea ice leads
 +
|Hannah Horowitz (U. Illinois)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|Updated LAI
+
|-valign="top"
−
|Kevin Bowman (JPL)<br>Folkert Boersma (KNMI)
+
|Drought-stress algorithm
 +
|Wei Li (U. Houston)
 
|
 
|
−
|-
 
−
|Merge dicarbonyl simulation into standard simulation
 
−
|Tzung-May Fu (Peking)
 
 
|
 
|
−
|-
+
 
−
|Global 0.5x0.667 capability for CO2/CH4
+
|-valign="top"
−
|Liang Feng (Edinburgh)<br>Dylan Jones (U. Toronto)
+
|Biomass burning injection height profiles
 +
|Inderjeet Singh (WashU)
 +
|Emissions
 
|
 
|
−
|-
+
 
−
|Dynamic multiple boxes subsurface Arctic Ocean
+
|-valign="top"
−
|Helen Amos (Harvard)<br>Anne Soerensen (Harvard)
+
|OCIM integration
 +
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
 
|
 
|
−
|-
 
−
|[[POPs simulation#PCB simulation|PCB simulation: atmosphere and ocean]]
 
−
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
 
 
|
 
|
−
|-
+
 
−
|Nighttime isoprene chemistry
+
|-valign="top"
−
|Rebecca Schwantes (Caltech)
+
|Updating landcover products in GEOS-Chem
 +
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
 +
|Input data
 
|
 
|
−
|-
+
 
−
|ClNO2
+
|-valign="top"
−
|Mat Evans (York)
+
|Dry deposition physical improvement
 +
|Chris Holmes (FSU)
 +
|Dry deposition
 
|
 
|
−
|-
+
 
−
|Dissolved Fe/Cu
+
|-valign="top"
−
|Matthew Johnson (NCSU)<br>Jingqiu Mao (NOAA/GFDL)
+
|TOMAS WRF-GC in regional Thailand simulation
−
|
+
|Win Trivitayanurak (Chulalongkorn U)
−
|-
+
|Aerosols
−
|UV absorption of organics/brown carbon
+
−
|Rokjin Park (Seoul Nat'l Univ.)
+
−
|
+
−
|-
+
−
|CO-CO2-CH4 simulation
+
−
|Dylan Jones (U. Toronto)<br>Annemarie Fraser (Edinburgh)
+
 
|
 
|
−
|-
 
−
|Updated HCN simulation
 
−
|Dylan Jones (U. Toronto)
 
−
|
 
−
|-
 
−
|[[Adding_Passive_Tracers|Passive tracer module]]
 
−
|Jenny Fisher (Wollongong)
 
−
|
 
−
'''''[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)
 
  
−
=== Longer term (12-24 months)===
+
|}
−
 
+
−
TBD
+
−
 
+
−
--[[User:Melissa Payer|Melissa Sulprizio]] 10:00, 23 January 2014 (EST)
+

Revision as of 15:42, 9 April 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
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
Parameterization of SNA and OM dry size Haihui Zhu (WashU) Aerosols Medium
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions Medium
Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4 Lizzie Lundgren (Harvard) GC-Classic Medium
Replace ISORROPIA with HETPv1.0 Lizzie Lundgren (Harvard)
Seb Eastham (ICL) 		Aerosol thermodynamics Medium
Only convert units for species that need it Bob Yantosca (Harvard) Unit conversions Medium
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics Medium

Prioritized and in the queue

Features listed in this table are prioritized for integration into GEOS-Chem in the near future.

Feature Contributor(s) Model scope Ease of implementation Delivery status Notes and References
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
Mass flux regridding fix in MAPL Tom Clune (GMAO)
Seb Eastham (MIT) 		GCHP input regridding Medium
  • GCHP Issue #377
  • Currently on hold, as the submitted update results in zero diff

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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