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

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On
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On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the [https://geos-chem.seas.harvard.edu/geos-working-groups Working Groups] and the [https://geos-chem.seas.harvard.edu/geos-steering-cmte Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
  
−
== List of priorities identified at IGC5 ==  
+
== Merged and awaiting release ==
  
−
This is a list of planned GEOS-Chem model development items, based on discussions and Working Group reports from the  and [http://acmg.seas.harvard.edu/geos/geos_meeting_2011.html 5th International GEOS-Chem Meeting (aka IGC5)].  The key model developer or model contact is identified for each item.  Items are listed in rough order of decreasing readiness, although this can quickly change.
+
See the links below for items merged and awaiting release.
  
−
We count on user input to augment and prioritize this list, please contact your [http://acmg.seas.harvard.edu/geos/geos_working_groups.html Working Group Chair] or model scientist [mailto:djacob@fas.harvard.edu Daniel Jacob].
+
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="300px"|Mergeable at any time
 +
!width="200px"|Version in development
  
−
=== For immediate implementation (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"
 
−
!Item
 
−
!Author(s)
 
−
!Status
 
−
|-
 
−
|[[APM aerosol microphysics]]
 
−
|Fangqun Yu (SUNY Albany)
 
−
|Will be included in [[GEOS-Chem v9-01-02|v9-01-02]]
 
−
|-
 
−
|[[Biomass_burning_emissions#GFED3|GFED3 biomass burning]]
 
−
|Prasad Kasibhatla (Duke)
 
−
|Will be included in v9-01-02
 
−
|-
 
−
|[[Aircraft_emissions#FAA_aircraft_emissions_inventory|FAA/AEDT aircraft emissions inventory]]
 
−
|Steven Barrett et al (MIT)
 
−
|Will be included in v9-01-02
 
−
|-
 
−
|[[Dry_deposition#Aerosol_dry_deposition_velocities_over_snow_and_ice_surfaces|Aerosol deposition over snow/ice]]
 
−
|Jenny Fisher (Harvard)
 
−
|Will be included in v9-01-02
 
−
|-
 
−
|[[Anthropogenic_emissions#Streets_2000|Seasonal variation of Asian NH3 emissions]]
 
−
|Jenny Fisher (Harvard)
 
−
|Will be included in v9-01-02
 
−
|-
 
−
|[[GEOS-Chem_v9-01-02#Aerosol_optical_depth|Cleanup of AOD diagnostics]]
 
−
|Sungshik Patrick Kim (Harvard)
 
−
|Will be included in v9-01-02
 
−
|-
 
−
|[[Implementation_of_RETRO_Anthropogenic_Emissions|RETRO anthropogenic VOC emissions]]
 
−
|Dylan Millet (U. Minnesota)
 
−
|Will be included in v9-01-02
 
−
|-
 
 
|}
 
|}
  
−
--[[User:Bmy|Bob Y.]] 10:59, 6 June 2011 (EDT)
+
== Feature integration in progress ==
  
−
=== Ready to go in ===
+
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
 +
 
 +
|-valign="top"
 +
|GCHP carbon simulation
 +
|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
 +
|Simple
 +
|
 +
 
 +
|-valign="top"
 +
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
 +
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
 +
|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
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
*Incorporates new met field TSOIL1
 +
 
 +
|-valign="top"
 +
|Remove differences in GC-Classic when breaking up runs in time
 +
|Lizzie Lundgren (Harvard)
 +
|GC-Classic
 +
|Medium
 +
|
 +
 
 +
|-valign="top"
 +
|GCHP advection diagnostics
 +
|Lizzie Lundgren (Harvard)
 +
|GCHP diagnostics
 +
|Simple
 +
|
 +
*[https://github.com/geoschem/GCHP/pull/395 gchp PR #395]
 +
 
 +
|-valign="top"
 +
|Only convert units for species that need it
 +
|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'''
  
−
{| border=1 cellspacing=0 cellpadding=5
 
−
|- bgcolor="#cccccc"
 
−
!Item
 
−
!Author(s)
 
−
!Status
 
−
|-
 
−
|Nested-grid Hg simulation
 
−
|Lyatt Jaegl&eacute; (U. Washington)
 
−
|
 
−
|-
 
−
|Nested-grid CO2 simulation
 
−
|Yuxuan Wang (Tsinghua U.)
 
−
|
 
−
|-
 
−
|Stratospheric P and k (monthly climatological)
 
−
|Lee Murray (Harvard)
 
−
|
 
−
|-
 
−
|Inorganic chemistry updates
 
−
|Mat Evans (Leeds)
 
−
|
 
−
|-
 
−
|GEIA 2005 Hg emissions
 
−
|Bess Corbitt (Harvard)
 
−
|
 
−
|-
 
−
|Expanded SOA
 
−
|Havala Pye (EPA/ORD)
 
−
|
 
−
|-
 
−
|Dust submicron size distribution for optics
 
−
|David Ridley (Colo. State)
 
−
|
 
−
|-
 
−
|[http://pumpkin.aquila.infn.it/flexaod/ FlexAOD postprocessor]
 
−
|Gabriele Curci (U. L'Aquila)
 
−
|Completed on 26 May 2011
 
−
|-
 
−
|GEIA emissions scale factor fix
 
−
|Dylan Millet (U. Minnesota)
 
−
|
 
−
|-
 
−
|Longwave & shortwave RF codes for chemistry-climate
 
−
|Fangqun Yu (SUNY Albany)
 
−
|
 
−
|-
 
−
|Improved sea salt emission & deposition
 
−
|Lyatt Jaegl&eacute; (U. Washington)
 
−
|Code delivered to [[GEOS-Chem Support Team|GCST]], awaiting implementation
 
−
|-
 
−
|Improved snow scavenging and washout parameterization
 
−
|Qiaoqiao Wang (Harvard)
 
−
|
 
−
|-
 
 
|}
 
|}
  
−
--[[User:Bmy|Bob Y.]] 10:59, 6 June 2011 (EDT)
+
== Prioritized and in the queue ==
  
−
=== Almost there (< 6 months) ===
+
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
 +
|
 +
*[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"
 +
|ALK4 & R4N2 chemistry
 +
|Jared Brewer (UMN)
 +
|Chemistry
 +
|TBD
 +
|Not delivered
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
 +
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., submitted 2023.]
 +
 
 +
|-valign="top"
 +
|[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
 +
|
 +
*[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"
 +
|Mass flux regridding fix in MAPL
 +
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
 +
|GCHP input regridding
 +
|Medium
 +
|
 +
|
 +
*[https://github.com/GEOS-ESM/MAPL/pull/2056 GEOS-ESM/MAPL PR #2056]
 +
 
 +
|-valign="top"
 +
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
 +
|Haihui Zhu (WashU)
 +
|Aerosols
 +
|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"
 +
|Capture all trop and PBL height changes in budget diagnostics
 +
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
 +
|Diagnostics
 +
|Medium
 +
|
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
  
−
{| border=1 cellspacing=0 cellpadding=5
 
−
|- bgcolor="#cccccc"
 
−
!Item
 
−
!Author(s)
 
−
!Status
 
−
|-
 
−
|[[Soil_NOx_emissions#Updated_soil_NOx_emissions_algorithm|New soil NOx emission module]]
 
−
|Rynda Hudman (UC Berkeley)
 
−
|Code delivered to [[GEOS-Chem Support Team|GCST]], awaiting implementation
 
−
|-
 
−
|[[APM aerosol microphysics|APM]] capability for nested grid
 
−
|Fangqun Yu (SUNY Albany)
 
−
|
 
−
|-
 
−
|[[TOMAS aerosol microphysics|TOMAS]] capability for nested grid
 
−
|Jeff Pierce (Dalhousie)
 
−
|
 
−
|-
 
−
|Fix of global OH diagnostic
 
−
|Mat Evans (Leeds)<br>Jingqiu Mao (NOAA/GFDL)
 
−
|
 
−
|-
 
−
|Chemical updates for atmospheric Hg
 
−
|Bess Corbitt (Harvard)<br>Jenny Fisher (Harvard)
 
−
|
 
−
|-
 
−
|Streets future Hg emissions
 
−
|Bess Corbitt (Harvard)
 
−
|
 
−
|-
 
−
|[[EPA/NEI05_North_American_emissions|EPA/NEI2005 Hg emissions for US]]
 
−
|Lyatt Jaegl&eacute; (U. Washington)
 
−
|
 
−
|-
 
−
|Hg(II) gas-aerosol partitioning
 
−
|Helen Amos (Harvard)
 
−
|
 
−
|-
 
−
|Update to EDGAR 4 anthropogenic emissions
 
−
|Qiang Zhang (Tsinghua)
 
−
|
 
−
|-
 
−
|Updated diurnal variation of US NEI emissions
 
−
|Rynda Hudman (UC Berkeley)
 
−
|
 
−
|-
 
−
|Satellite-based NOx emission trends
 
−
|Lok Lamsal (NASA GSFC)
 
−
|
 
−
|-
 
−
|PARANOX ship plume emissions
 
−
|Geert Vinken (Eindhoven)
 
−
|
 
−
|-
 
−
|Interannual lightning
 
−
|Lee Murray (Harvard)
 
−
|
 
−
|-
 
−
|Primary marine OA emissions
 
−
|Kateryna Lapina (CSU)
 
−
|
 
−
|-
 
−
|Complete shift of biogenic VOC emissions from GEIA to MEGAN; retire GEIA
 
−
|Dylan Millet (U. Minnesota)
 
−
|
 
−
|-
 
−
|Update HCN simulation
 
−
|Qian Li (U. Edinburgh)<br>Dylan Jones (U. Toronto)
 
−
|
 
−
|-
 
−
|Implement GISS advection scheme for GISS-driven applications
 
−
|[[GEOS-Chem Support Team]]
 
−
|
 
−
|-
 
 
|}
 
|}
  
−
--[[User:Bmy|Bob Y.]] 11:10, 6 June 2011 (EDT)
+
== Ready to go in ==
  
−
=== Over the horizion (6-12 months) ===
+
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  
−
|- bgcolor="#cccccc"
+
|-bgcolor="#CCCCCC"
−
!Item
+
!width="200px"|Feature
−
!Author(s)
+
!width="200px"|Contributor(s)
−
!Status
+
!width="100px"|Model scope
−
|-
+
!width="100px"|Delivery status
−
|Working with [[GEOS-5.7.1|GEOS-5.7.3]]
+
!width="300px"|Notes and References
−
|[[GEOS-Chem Support Team]]
+
 
−
|
+
|-valign="top"
−
|-
+
|Geologic emission of ethane and propane
−
|Nested-grid model at 0.25&deg x 0.3125&deg resolution
+
|Matthew Rowlinson and Mat Evans(York)
−
|Yuxuan Wang (Tsinghua)
+
|Emissions
−
|
+
|Delivered<br>Jan 2023
−
|-
+
−
|High-resolution emissions for above nested-grid model
+
−
|Yuxuan Wang (Tsinghua)
+
−
|
+
−
|-
+
−
|Improved acetone simulation
+
−
|Emily Fischer (Harvard)
+
−
|
+
−
|-
+
−
|[[Bromine chemistry mechanism|Tropospheric bromine chemistry]]
+
−
|Justin Parrella (Harvard)
+
−
|
+
−
|-
+
−
|OVOC's dry deposition
+
−
|Jingqiu Mao (NOAA/GFDL)
+
−
|
+
−
|-
+
−
|Improved planeflight diagnostic
+
−
|Mat Evans (Leeds)
+
−
|  
+
−
|-
+
−
|Chemistry diagnostics
+
−
|Mat Evans (Leeds)
+
−
|
+
−
|-
+
−
|Documentation of chemical mechanism
+
−
|Jingqiu Mao (NOAA/GFDL)
+
−
|
+
−
|-
+
−
|[[DSMACC_chemical_box_model|Box model]] version of GEOS-Chem chemical mechanism
+
−
|Jingqiu Mao (NOAA/GFDL)
+
−
|
+
−
|-
+
−
|Improved operator splitting
+
−
|Mauricio Santillana (Harvard)
+
−
|
+
−
|-
+
−
|Updated dicarbonyl simulation
+
−
|May Fu (Peking U.)
+
−
|
+
−
|-
+
−
|3-D VOC source for [[Tagged_CO_simulation|tagged CO simulations]]
+
−
|Dylan Jones (U. Toronto)
+
−
|
+
−
|-
+
−
|Replace CASA CO2 biosphere climatology with year-specific fluxes
+
−
|Ray Nassar (Environment Canada)<br>Dylan Jones (U. Toronto)
+
−
|
+
−
|-
+
−
|Satellite diagnostic for XCO2
+
−
|Liang Feng (U. Edinburgh)
+
−
|
+
−
|-
+
−
|Move to 2&deg; x 2.5&deg; versions of GISS GCM ModelE and Model3
+
−
|Loretta Mickley (Harvard)
+
−
|
+
−
|-
+
−
|Implement IPCC AR5 scenarios
+
−
|Loretta Mickley (Harvard)
+
 
|
 
|
−
|-
+
*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
−
|CO2 inhibition effect for isoprene emisison
+
 
−
|Loretta Mickley (Harvard)
+
|-valign="top"
−
|  
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
|-
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 +
|Science
 +
|Delivered<br>Feb 2021
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
 +
 
 +
|-valign="top"
 +
|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
 +
|
 +
*Data involves many files- need to think about temporal frequency
 +
 
 +
|-valign="top"
 +
|[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
 +
 
 +
|-valign="top"
 +
|DMS Chemistry
 +
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 +
|Chemistry
 +
|Not delivered
 +
|
 +
 
 +
|-valign="top"
 +
|Organic acids (RCOOH)
 +
|Katie Travis (NASA)
 +
|Chemistry
 +
|Not delivered
 +
|
 +
 
 +
|-valign="top"
 +
|Improve carbon & nitrogen conservation in reactions
 +
|Kelvin Bates (Harvard)
 +
|Chemistry
 +
|Not delivered
 +
|
 +
 
 +
|-valign="top"
 +
|Blowing snow sea salt in TOMAS
 +
|Betty Croft (Dalhousie)
 +
|Aerosols
 +
|Not delivered
 +
|
 +
 
 +
|-valign="top"
 +
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
 +
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
 +
|Hg simulation
 +
|Not delivered
 +
|
 +
 
 +
|-valign="top"
 +
|WRF-GC Hg simulation
 +
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation<br>WRF-GC
 +
|Not delivered
 +
|
 +
 
 +
|-valign="top"
 +
|Updated HgII gas-partical partitioning
 +
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
 +
|Hg simulation
 +
|Not delivered
 +
|
 +
*Should be option, not default
 +
 
 +
|-valign="top"
 +
|Dry deposition to F90 (readability)
 +
|Chris Holmes (FSU)
 +
|Dry deposition
 +
|Not delivered
 +
|
 +
 
 
|}
 
|}
  
−
--[[User:Bmy|Bob Y.]] 11:19, 6 June 2011 (EDT)
+
== Almost there (< 6 months) ==
  
−
=== To ===
+
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"
−
!Item
+
!width="200px"|Feature
−
!Author(s)
+
!width="200px"|Contributor(s)
−
!Status
+
!width="100px"|Model scope
−
|-
+
!width="420px"|Notes and References
 +
 
 +
|-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
 +
 +
|-valign="top"
 +
|PPN+hv, PPN+OH
 +
|Robert Ryan (UCL)
 +
|Chemistry
 
|
 
|
 +
 +
|-valign="top"
 +
|MBO
 +
|Michael Vermeuel (UMN)
 +
|Chemistry
 
|
 
|
−
|-
 
  
−
|}
+
|-valign="top"
 +
|Initial conditions for CH4 correcting background and stratospheric biases
 +
|Todd Mooring (Harvard)
 +
|Methane simulation
 +
|
  
 +
|-valign="top"
 +
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
 +
|Bob Yantosca (Harvard)
 +
|Aerosols<br>Structural
 +
|
 +
*Ongoing
  
 +
|-valign="top"
 +
|Re-binning of off-line sea salt and dust for use in TOMAS
 +
|Betty Croft (Dalhousie)
 +
|Aerosols
 +
|
  
−
== Items that are now included in GEOS-Chem ==
+
|-valign="top"
 +
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
 +
|Betty Croft (Dalhousie)
 +
|Aerosols
 +
|
  
−
Here we list new features that have since been brought into the standard mainline GEOS-Chem code.  Each of these was identified as a priority at the [http://acmg.seas.harvard.edu/geos/geos_meeting_2009.html 4th International GEOS-Chem Meeting] in 2009 (aka '''IGC4''') or the [http://acmg.seas.harvard.edu/geos/geos_meeting_2011.html 5th International GEOS-Chem Meeting] in 2011 (aka '''IGC5''').
+
|-valign="top"
 +
|ML algorithms for bulk aerosols
 +
|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
 +
|
 +
 +
|-valign="top"
 +
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
 +
|Sam Silva (MIT)
 +
|Emissions &<br>Science
 +
|
 +
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
 +
*Needs to be updated to a more recent GEOS-Chem version
 +
 +
|-valign="top"
 +
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
 +
|Bob Yantosca (Harvard)
 +
|Model performance
 +
|
 +
*Ongoing (will be done as time allows)
 +
 +
|-valign="top"
 +
|Retire all BPCH diagnostics
 +
|Bob Yantosca (Harvard)
 +
|Diagnostics
 +
|
 +
*Can be done following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]
 +
 +
|-valign="top"
 +
|Assess memory leak in GCHP
 +
|Killian Murphy (York)
 +
|Model performance
 +
|
 +
*NOTE: Most memory leaks in GCHP have been fixed by [https://github.com/geoschem/geos-chem/pull/1353 geoschem/geos-chem PR #1353].  Need to assess if any memory leaks still remain.
 +
 +
|-valign="top"
 +
|Hybrid MPI-OpenMP in GCHP
 +
|Seb Eastham (MIT)<br>Killian Murphy (York)
 +
|Model performance
 +
|
 +
 +
|-valign="top"
 +
|Improve run directory templating and creation with init_rd.sh and shared directories
 +
|Jourdan He (WashU)
 +
|Run directories
 +
|
 +
 +
|-valign="top"
 +
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
 +
|GCST?
 +
|Documentation
 +
|
 +
 +
|}
 +
 +
== Over the horizon (6-12 months) ==
 +
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
−
!Item
+
!width="200px"|Feature
−
!Author(s)
+
!width="200px"|Contributor(s)
−
!Priority From
+
!width="100px"|Model scope
−
!Completion Date
+
!width="420px"|Notes and References
−
|-
+
−
|[[Boundary layer mixing#VDIFF|Improved BL mixing scheme]]
+
−
|Jintai Lin
+
−
|[http://acmg.seas.harvard.edu/geos/geos_meeting_2009.html IGC4]
+
−
|Now included in [[GEOS-Chem v8-02-02]]; released 08 Jun 2009
+
−
|-
+
−
|[[Carbonaceous aerosols#EC and OC emissions|BC/OC aerosol emissions from Bond inventory]]
+
−
|Eric Leibensperger
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-02-02]]; released 08 Jun 2009
+
−
|-
+
−
|Chemical updates
+
−
|Mat Evans<br>Fabien Paulot<br>Jingqiu Mao<br>Paul Palmer
+
−
|IGC4
+
−
|Updated chemical mechanism and photolysis files<br><tt>globchem.dat</tt>, <tt>jv_spec.dat</tt>, <tt>ratj.d</tt><br>(see [http://www.as.harvard.edu/ctm/geos/wiki_docs/chemistry/chemistry_updates_v4.pdf documentation])<br>Now included in [[GEOS-Chem v8-02-01]]; released 26 May 2009
+
−
|-
+
−
|Common model [[GEOS-Chem Adjoint|adjoint]] and documentation
+
−
|Daven Henze<br>Kumaresh Singh<br>Monika Kopacz
+
−
|IGC4
+
−
|Code merging session took place June 6-9, 2009 @ Virginia Tech<br>
+
−
*Merged 3 branches of adjoint
+
−
*Forward model now based on v8-02-01 (w/ GEOS-5)
+
−
*Input files cleaned up and standardized
+
−
*New makefiles; code separated into subdirectories
+
−
*New CVS repository @ U. Colorado for code access
+
−
*Some minor cleanup may still be needed (as of June 2009)
+
−
|-
+
−
|Local stratospheric ozone column from GEOS-5
+
−
|GEOS-Chem Support Team
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-02-03]], released 14 Oct 2009
+
−
|-
+
−
|[[KPP solvers FAQ|KPP chemical solver]]
+
−
|Kumaresh Singh
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-02-03]], released 14 Oct 2009
+
−
|-
+
−
|[[Ship_emissions#ICOADS|ICOADS ship emissions]]
+
−
|Chulkyu Lee
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-02-03]], released 14 Oct 2009
+
−
|-
+
−
|[[CH4 simulation|Methane including tagged tracers]]
+
−
|Kevin Wecht
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-02-03]], released 14 Oct 2009
+
−
|-
+
−
|[[Linoz stratospheric ozone chemistry]]
+
−
|Dylan Jones
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-02-04]], released 24 Feb 2010
+
−
|-
+
−
|Aerosol data sets for benchmarking
+
−
|Colette Heald
+
−
|IGC4
+
−
|IMPROVE PM2.5 data are now included in the 1-yr benchmark plots<br>starting with [[GEOS-Chem v8-02-04]]
+
−
|-
+
−
|[[TOMAS aerosol microphysics]]
+
−
|Peter Adams<br>Dan Westervelt<br>Win Trivitayanurak
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-03-01]], released 04 May 2010
+
−
|-
+
−
|[[Photolysis mechanism#Updated aerosol optical properties|Updated aerosol optical properties]]
+
−
|Colette Heald<br>Randall Martin<br>and the Aerosols Working Group
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-03-01]], released 04 May 2010
+
−
|-
+
−
|Global 1x1.25 model capability
+
−
|Lok Lamsal
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-03-01]], released 04 May 2010
+
−
|-
+
−
|[[ISORROPIA II]]
+
−
|Havala Pye<br>Thanos Nenes<br>Becky Alexander
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-03-01]], released 04 May 2010
+
−
|-
+
−
|[[CO2 simulation|CO2 including tagged tracers]]
+
−
|Ray Nassar
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-03-02]], released 07 Sep 2010
+
−
|-
+
−
|[[Global Terrestrial Mercury Model|Terrestrial]] and deep ocean mercury
+
−
|Nicole Smith-Downey<br>Elsie Sunderland<br>Chris Holmes<br>and Team-Hg
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v8-03-02]], released 07 Sep 2010
+
−
|-
+
−
|Acquire long-term [[MERRA]] archive
+
−
|GEOS-Chem Support Team
+
−
|IGC4
+
−
|Now included in [[GEOS-Chem v9-01-01]], released 10 Feb 2011
+
−
|}
+
  
−
--[[User:Bmy|Bob Y.]] 11:21, 10 May 2011 (EDT)
+
|-valign="top"
 +
|Snow / Icy Bromine
 +
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
 +
|Chemistry
 +
|
  
−
== Items that have yet to be included in GEOS-Chem ==  
+
|-valign="top"
 +
|Monoterpene oxidation scheme
 +
|Jessica Haskins (MIT)
 +
|Chemistry
 +
|
  
−
We are working towards adding each of these new features into future GEOS-Chem releases.  Each of these was identified as a priority at the [http://acmg.seas.harvard.edu/geos/geos_meeting_2009.html 4th International GEOS-Chem Meeting] in 2009 (aka '''IGC4''') or the [http://acmg.seas.harvard.edu/geos/geos_meeting_2011.html 5th International GEOS-Chem Meeting] in 2011 (aka '''IGC5''').
+
|-valign="top"
 +
|Fire related VOCs including furans
 +
|Lu Hu (UMT)<br>Lixu Jin (UMT)
 +
|Chemistry
 +
|
  
 +
|-valign="top"
 +
|Extension of UCX into the mesosphere
 +
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
 +
|Chemistry
 +
|
 +
 +
|-valign="top"
 +
|Methane flux ingestion
 +
|Eloise Marais (UCL)
 +
|Chemistry
 +
|
 +
 +
|-valign="top"
 +
|Dust non-sphericity impacts on surface chem and optical properties
 +
|Inderjeet Singh (WashU)
 +
|Aerosols
 +
|
 +
 +
|-valign="top"
 +
|Size-resolved stratospheric aerosol
 +
|Seb Eastham (MIT)
 +
|Aerosols
 +
|
 +
 +
|-valign="top"
 +
|Extend aerosol settling
 +
|Eloise Marais (UCL)
 +
|Aerosols
 +
|
 +
 +
|-valign="top"
 +
|Stratospheric aerosol APM
 +
|Fangqun Yu (SUNY)
 +
|Aerosols
 +
|
 +
 +
|-valign="top"
 +
|Plume-in-grid model
 +
|Hongwei Sun (Harvard)
 +
|Chemistry
 +
|
 +
 +
|-valign="top"
 +
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
 +
|Lee Murray (Rochester)
 +
|Emissions
 +
|
 +
 +
|-valign="top"
 +
|Seb aircraft emissions beyond recent 2019 update
 +
|Seb Eastham (MIT)
 +
|Emissions
 +
|
 +
 +
|-valign="top"
 +
|FRP-based fire emsisions for eastern US at 0.2 deg
 +
|Charlie Fite (FSU)
 +
|Emissions
 +
|
 +
 +
|-valign="top"
 +
|Hg iodine chemistry
 +
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation
 +
|
 +
 +
|-valign="top"
 +
|Hg simulation in GCHP
 +
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
 +
|Hg simulation
 +
|
 +
 +
|-valign="top"
 +
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
 +
|Yanxu Zhang (Nanjing U.)
 +
|Hg simulation
 +
|
 +
 +
|-valign="top"
 +
|Dry deposition diagnostics by land cover
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
 +
 +
|-valign="top"
 +
|Dry deposition process diagnostics
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
 +
 +
|-valign="top"
 +
|Isotope simulation for CO and CH4 in GCHP
 +
|Lee Murray (Rochester)
 +
|Carbon simulation
 +
|
 +
 +
|-valign="top"
 +
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
 +
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
 +
|Emissions<br>CH4 simulation
 +
|
 +
 +
|-valign="top"
 +
|Modularization of aerosols code for interface with GOCART in GEOS
 +
|Christoph Keller (GMAO)
 +
|Structural
 +
|
 +
 +
|-valign="top"
 +
|Improve load balancing in GCHP
 +
|Seb Eastham (MIT)
 +
|Model performance
 +
|
 +
 +
|-valign="top"
 +
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
 +
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
 +
|Transport
 +
|
 +
 +
|-valign="top"
 +
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
 +
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
 +
|Transport
 +
|
 +
 +
|-valign="top"
 +
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
 +
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
 +
|Transport
 +
|
 +
 +
|}
 +
 +
== Longer term (12-24 months)==
 +
 +
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"
−
!Item
+
!width="200px"|Feature
−
!Author(s)
+
!width="200px"|Contributor(s)
−
!Priority From
+
!width="100px"|Model scope
−
!Status
+
!width="420px"|Notes and References
−
|-
+
−
|[[APM aerosol microphysics]]
+
−
|Fangqun Yu
+
−
|[http://acmg.seas.harvard.edu/geos/geos_meeting_2009.html IGC4]
+
−
|Incorporated and validated in [[GEOS-Chem v9-01-02]], awaiting release
+
−
|-
+
−
|[[Biomass_burning_emissions#GFED3|GFED3 biomass burning]]
+
−
|Prasad Kasibhatla
+
−
|IGC4
+
−
|Incorporated into [[GEOS-Chem v9-01-02]], awaiting release
+
−
|-
+
−
|[[Aircraft_emissions#FAA_aircraft_emissions_inventory|FAA aircraft emissions inventory]]
+
−
|Steven Barrett et al
+
−
|IGC4
+
−
|Incorporated and validated in [[GEOS-Chem v9-01-02]], awaiting release
+
−
|-
+
−
|Anthropogenic VOCs update
+
−
|Dylan Millet<br>
+
−
|IGC4
+
−
|The [[Implementation of RETRO Anthropogenic Emissions|RETRO anthropogenic VOC emissions]] will be included into [[GEOS-Chem v9-01-02]].
+
−
|-
+
−
|[[Soil NOx emissions#Updated soil NOx emissions algorithm|Updated soil NOx emissions]]
+
−
|Randall Martin<br>Rynda Hudman
+
−
|IGC4
+
−
|Slated for inclusion into [[GEOS-Chem v9-01-02]] or [[GEOS-Chem v9-01-03]]
+
−
|-
+
−
|[[Bromine_chemistry_mechanism|Tropospheric bromine chemistry]]
+
−
|Justin Parrella
+
−
|IGC4
+
−
|Substantially complete but undergoing further validation.  Slated for inclusion into [[GEOS-Chem v9-01-03]].
+
−
|-
+
−
|Updated strat chem. from GMI Combo
+
−
|Dylan Jones
+
−
|IGC4
+
−
|Slated for inclusion [[GEOS-Chem v9-01-02]] or [[GEOS-Chem v9-01-03]].
+
−
|-
+
−
|Convert model output to NetCDF
+
−
|GEOS-Chem Support Team
+
−
|IGC4
+
−
|Lee Murray has mature code for reading netCDF files, which will be installed at the same time as the strat chem from GMI Combo.  The code can be extended to write netCDF files, but this will be more time-consuming.
+
−
|-
+
−
|Addition of aromatics to SOA simulation
+
−
|Daven Henze
+
−
|IGC4
+
−
|to be added in short order following v8-02-01 release
+
−
|-
+
−
|Archive tropospheric OH fields from benchmark runs
+
−
|GEOS-Chem Support Team
+
−
|IGC4
+
−
|&nbsp;
+
−
|-
+
−
|Flexible region mask for tagged tracers
+
−
|Dylan Jones<br>Prasad Kasibhatla
+
−
|IGC4
+
−
|&nbsp;
+
−
|-
+
−
|Data servers for chemistry/climate databases
+
−
|Loretta Mickley
+
−
|IGC4
+
−
|&nbsp;
+
−
|-
+
−
|Interannual lightning
+
−
|Lee Murray
+
−
|IGC4
+
−
|&nbsp;
+
−
|-
+
−
|Fire injection heights
+
−
|Maria Val Martin
+
−
|IGC4
+
−
|&nbsp;
+
−
|-
+
−
|CCSM3 interface
+
−
|Rokjin Park
+
−
|IGC4
+
−
|&nbsp;
+
−
|-
+
−
|PBAP
+
−
|Colette Heald
+
−
|IGC4
+
−
|&nbsp;
+
−
|-
+
−
|Sulfate/nitrate isotopes
+
−
|Becky Alexander
+
−
|IGC4
+
−
|&nbsp;
+
−
|-
+
−
|ESMF/MPI capability
+
−
|GEOS-Chem Support Team
+
−
|IGC4
+
−
|[[GEOS-Chem column code]] is being interfaced into the GEOS-5 GCM
+
−
|-
+
−
|Spatial reduction mechanism
+
−
|Mauricio Santillana
+
−
|IGC4
+
−
|&nbsp;
+
−
|-
+
−
|GISS Model E interface
+
−
|Lee Murray
+
−
|IGC4
+
−
|Please read the [http://acmg.seas.harvard.edu/geos/word_pdf_docs/steering_cmte/stercomm.telecon.ltmurray.GISS.pdf GISS Model E Memo] by (Lee Murray and Loretta Mickley) for the latest information.
+
−
|}
+
  
−
--[[User:Bmy|Bob Y.]] 11:34, 10 May 2011 (EDT)
+
|-valign="top"
 +
|Updates to Aromatic chemistry
 +
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Nitrate photolysis
 +
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|In aerosol chemistry Halogens
 +
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Benchmark box model of GC Chemistry
 +
|Katie Travis (NASA)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Alkyl nitrates Alk7, PHAN
 +
|Katie Travis (NASA)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Add stratospheric ozone species to full-chemistry simulations
 +
|Lee Murray (Rochester)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Perchlorate chemistry
 +
|Yuk Chun Chan (UWAB)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Explicit heterogeneous sulfate chemistry
 +
|Katie Travis (NASA)<br>Becky Alexander (UT)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|HOx and ozone "emissions" from lightning as option in model to play with
 +
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
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|Sea salt aerosol from sea ice leads
 +
|Hannah Horowitz (U. Illinois)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Drought-stress algorithm
 +
|Wei Li (U. Houston)
 +
|
 +
|
 +
 
 +
|-valign="top"
 +
|Biomass burning injection height profiles
 +
|Inderjeet Singh (WashU)
 +
|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
 +
|
 +
 
 +
|-valign="top"
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|Dry deposition physical improvement
 +
|Chris Holmes (FSU)
 +
|Dry deposition
 +
|
 +
 
 +
|-valign="top"
 +
|TOMAS WRF-GC in regional Thailand simulation
 +
|Win Trivitayanurak (Chulalongkorn U)
 +
|Aerosols
 +
|
 +
 
 +
|}

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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