GEOS-Chem model development priorities: Difference between revisions

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On this page we list the priorities for ongoing GEOS-Chem model development. We also list the items that were once identified as priorities but have since been added to the standard mainline GEOS-Chem code.
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 as of Dec 2011 ==
== Merged and awaiting release ==


Development priorities for GEOS-Chem are identified by users at the biennial users' meetings and updated betweeen meetings by the GEOS-Chem Working Groups and the Steering Committee. They are then incorporated into new GEOS-Chem versions on the basis of readiness and importance. All scientific developments originate from users and readiness is generally measured by the maturity of the product (often a submitted paper) and work by the developer with the GEOS-Chem Support Team to import it into the standard model. Deciding which updates should go into the next version of GEOS-Chem is a responsibility of the GEOS-Chem Steering Committee but user input is eagerly sought.  
See the links below for items merged and awaiting release.


On this page we list the model development priorities as "ready to go in", "almost there (<6 months)"
{| 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
 
|-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"
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
|Haihui Zhu (WashU)
|Aerosols
|Medium
|
*[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]
 
|-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 due to HEMCO reading REAL8 restart as REAL4
|Lizzie Lundgren (Harvard)
|GC-Classic
|Medium
|
*[https://github.com/geoschem/HEMCO/issues/18 hemco issue #18]
 
|-valign="top"
|Replace ISORROPIA with [https://gmd.copernicus.org/articles/17/2197/2024/ HETPv1.0]
|Lizzie Lundgren (Harvard)<br>Seb Eastham (ICL)
|Aerosol thermodynamics
|Medium
|
*[https://github.com/geoschem/geos-chem/issues/2235 geos-chem issue #2235]
 
|-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]
 
|-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"
!width="400px"|Item
!Author(s)
!Status
|-
|[[Acetone|Improved acetone simulation]]
|Emily Fischer (Harvard)
|Delivered to [[GEOS-Chem Support Team|GCST]], slated for [[GEOS-Chem v9-01-03|v9-01-03]]
|-
|Complete shift of biogenic VOC emissions from GEIA to MEGAN; retire GEIA
|Dylan Millet (U. Minnesota)
|Delivered to GCST, slated for v9-01-03
|-
|OVOC's dry deposition
|Jingqiu Mao (NOAA/GFDL)
|Delivered to GCST; slated for v9-01-03
|-
|Improved sea salt [[Sea salt aerosols#SST dependent sea salt emissions|emission]] & [[Sea salt aerosols#Updates to sea salt dry deposition|deposition]]
|Lyatt Jaegl&eacute; (U. Washington)
|Delivered to GCST, slated for v9-01-03
|-
|Dust submicron size distribution for optics
|David Ridley (Colo. State)
|Delivered to GCST, slated for v9-01-03
|-
|Improved [[Wet_deposition#Add_scavenging_by_snow|snow scavenging]] and [[Wet_deposition#Allow_both_washout_and_rainout_when_precipitation_forms|washout parameterization]]
|Qiaoqiao Wang (Harvard)
|Delivered to GCST, slated for v9-01-03
|-
|[[Ship emissions#PARANOX ship plume model|PARANOX ship plume emissions]]
|Geert Vinken (Eindhoven)
|Delivered to GCST, slated for v9-01-03
|-
|[[Secondary_organic_aerosols#SOA_simulation_with_semi-volatile_POA|Expanded SOA]]
|Havala Pye (EPA/ORD)
|Delivered to GCST; slated for v9-01-03
|-
|[[Stratospheric_chemistry|Stratospheric P and k (monthly climatological)]]
|Lee Murray (Harvard)
|Code is ready (awaiting delivery to GCST); slated for v9-01-03
|-
|[[EPA/NEI05_North_American_emissions|EPA/NEI2005 Hg emissions for US]]
|Lyatt Jaegl&eacute; (U. Washington)
|Delivered to GCST, slated for v9-01-03
|-
|Satellite-based NOx emission trends
|Lok Lamsal (NASA GSFC)
|Delivered to GCST, slated for v9-01-03
|-
|Streets future Hg emissions
|Bess Corbitt (Harvard)
|Code is ready, slated for v9-01-03
|-
|Hg(II) gas-aerosol partitioning
|Helen Amos (Harvard)
|Code is ready, slated for v9-01-03
|-
|Nested-grid Hg simulation
|Lyatt Jaegl&eacute; (U. Washington)
|Delivered to GCST; slated for v9-01-03
|-
|[[CO2 simulation#Nested-grid CO2 simulation|Nested-grid CO2 simulation]]
|Yuxuan Wang (Tsinghua U.)
|Delivered to GCST; slated for v9-01-03
|-
|[[Sources_and_Sinks_Working_Group#Available_Historical_and_Future_Emissions|Historical emission inventories of SO2, NOx, BC, and POA]]
|Eric Leibensperger (MIT)
|Delivered to GCST, slated for v9-01-03
|-
|}
|}


--[[User:Bmy|Bob Y.]] 11:59, 28 November 2011 (EST)
== Prioritized and in the queue ==


=== Ready to go in ===
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"
|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., 2023.]
 
|-valign="top"
|Mass flux regridding fix in MAPL
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
|GCHP input regridding
|Medium
|
|
*[https://github.com/geoschem/GCHP/issues/377 GCHP Issue #377]
*'''Currently on hold, as the submitted update results in zero diff'''
 
|-valign="top"
|New version of CEDS at 0.1 deg
|Dandan Zhang (WashU)
|Emissions
|Simple
|Delivered
|
*[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 by the authors.'''


{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
!width="400px"|Item
!Author(s)
!Status
|-
|[[Updating_standard_chemistry_with_JPL_10-6|Inorganic chemistry updates]]
|Mat Evans (Leeds)
|Delivered to GCST; awaiting implementation
|-
|[[Soil_NOx_emissions#Updated_soil_NOx_emissions_algorithm|New soil NOx emission module]]
|Rynda Hudman (UC Berkeley)
|Delivered to GCST, awaiting implementation
|-
|Methyl peroxy nitrate (MPN) chemistry
|Ellie Browne (UC Berkeley)
|Delivered to GCST, awaiting implementation
|-
|[[Mineral_dust_aerosols#Surface_chemistry_on_dust|Acid uptake on dust aerosols]]
|T. Duncan Fairlie (NASA/LARC)
|Delivered to GCST, awaiting implementation
|-
|Replacing [[Implementation_of_RETRO_Anthropogenic_Emissions|RETRO C2H6 emissons]] with emissions from the C2H6 offline simulation
|Yaping Xiao (UNH)
|Awaiting implementation
|-
|}
|}


--[[User:Melissa Payer|Melissa Payer]] 15:36, 23 November 2011 (EST)
== 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


=== Almost there (< 6 months) ===
|-valign="top"
|KORUS-AQ emissions for East Asia (as an option)
|Katie Travis (NASA)
|Emissions
|Simple
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Geologic emission of ethane and propane
!width="400px"|Item
|Matthew Rowlinson and Mat Evans(York)
!Author(s)
|Emissions
!Status
|Delivered<br>Jan 2023
|-
|[[Aircraft_emissions#FAA_aircraft_emissions_inventory|FAA/AEDT aircraft emissions inventory]]
|Steven Barrett et al (MIT)
|Code delivered to [[GEOS-Chem Support Team|GCST]], on hold
|-
|Longwave & shortwave RF codes for chemistry-climate
|Fangqun Yu (SUNY Albany)
|
|
|-
*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
|[[APM aerosol microphysics|APM]] capability for nested grid
 
|Fangqun Yu (SUNY Albany)
|-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)
|[[TOMAS aerosol microphysics|TOMAS]] capability for nested grid
|Science
|Jeff Pierce (Dalhousie)
|Delivered<br>Feb 2021
|
|-
|Update to EDGAR 4 anthropogenic emissions
|Qiang Zhang (Tsinghua)
|  
|-
|Interannual lightning
|Lee Murray (Harvard)
|
|
|-
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
|Primary marine OA emissions
 
|Kateryna Lapina (CSU)
|-valign="top"
|
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|-
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
|Implement GISS advection scheme for GISS-driven applications
|Emissions
|[[GEOS-Chem Support Team]]
|Delivered<br>Jul 2021
|
|-
|[[Bromine chemistry mechanism|Tropospheric bromine chemistry]]
|Justin Parrella (Harvard)
|
|-
|Updated [[Dicarbonyls simulation|dicarbonyl simulation]]
|May Fu (Peking U.)
|
|-
|Satellite diagnostic for XCO2
|Liang Feng (U. Edinburgh)
|
|-
|Cloudwater pH for sulfate formation
|Becky Alexander (U. Washington)
|Code is ready, pending paper acceptance
|-
|Tagged sulfate and nitrate simulation
|Becky Alexander (U. Washington)
|
|-
|Improve temporal resolution of anthropogenic CO2 sources
|Ray Nassar (Environment Canada)
|  
|-
|Replace existing regridding routines with the MAP_A2A regridding package
|Matt Cooper (Dalhousie)
|
|
|-
*Data involves many files- need to think about temporal frequency
|[[ChemTelecon20111202|Improvements to isoprene chemistry, standardization of Paulot Scheme]]
 
|Fabien Paulot (Harvard)<br>Eloise Marais (Harvard)<br>Jingqiu Mao (NASA/GFDL)<br>Mat Evans (Leeds)
|-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
|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.]
|[[ChemTelecon20111202|RO2+NO3 chemistry updates]]
*Implemented in v12.5, needs to be brought up to current version
|Mat Evans (Leeds)
 
|-valign="top"
|DMS Chemistry
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
|Chemistry
|Not delivered
|
|
|-
 
|[[ChemTelecon20111202|Inhibition of N2O5 hydrolysis by aerosol nitrate]]
|-valign="top"
|Lin Zhang (Harvard)
|Organic acids (RCOOH)
|Katie Travis (NASA)
|Chemistry
|Not delivered
|
|
|-
 
|[[ChemTelecon20111202|Improved HO2 uptake by aerosol]]
|-valign="top"
|Jingqiu Mao (NASA/GFDL)
|Improve carbon & nitrogen conservation in reactions
|Kelvin Bates (Harvard)
|Chemistry
|Not delivered
|
|
|-
 
|[[ChemTelecon20111202|Improved ROOH formation and chemistry]]
|-valign="top"
|Fabien Paulot (Harvard)<br>Mat Evans (Leeds)
|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:Melissa Payer|Melissa Payer]] 10:45, 5 December 2011 (EST)
== Almost there (< 6 months) ==


=== Over the horizon (6-12 months) ===
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team 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
!Author(s)
!width="200px"|Contributor(s)
!Status
!width="100px"|Model scope
|-
!width="420px"|Notes and References
|Update HCN simulation
 
|Qian Li (U. Edinburgh)<br>Dylan Jones (U. Toronto)
|-valign="top"
|  
|PPN+hv, PPN+OH
|-
|Robert Ryan (UCL)
|Working with [[GEOS-5.7.2|GEOS-5.7.2]]
|Chemistry
|[[GEOS-Chem Support Team]]
|
|Development is ongoing
 
|-
|-valign="top"
|Nested-grid model at 0.25&deg; x 0.3125&deg; resolution
|MBO
|Yuxuan Wang (Tsinghua)
|Michael Vermeuel (UMN)
|  
|Chemistry
|-
|
|High-resolution emissions for above nested-grid model
 
|Yuxuan Wang (Tsinghua)
|-valign="top"
|  
|Initial conditions for CH4 correcting background and stratospheric biases
|-
|Todd Mooring (Harvard)
|Improved planeflight diagnostic
|Methane simulation
|Mat Evans (Leeds)
|
|  
 
|-
|-valign="top"
|Chemistry diagnostics
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|Mat Evans (Leeds)
|Bob Yantosca (Harvard)
|  
|Aerosols<br>Structural
|-
|
|Improved operator splitting
*Ongoing
|Mauricio Santillana (Harvard)
 
|Development is ongoing
|-valign="top"
|-
|Re-binning of off-line sea salt and dust for use in TOMAS
|3-D VOC source for [[Tagged_CO_simulation|tagged CO simulations]]
|Betty Croft (Dalhousie)
|Dylan Jones (U. Toronto)
|Aerosols
|  
|
|-
 
|Move to 2&deg; x 2.5&deg; versions of GISS GCM ModelE and Model3
|-valign="top"
|Loretta Mickley (Harvard)
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
|For more information, please see the [http://acmg.seas.harvard.edu/geos/word_pdf_docs/steering_cmte/stercomm.telecon.ltmurray.GISS.pdf GISS Model E Memo]<br>by (Lee Murray and Loretta Mickley).
|Betty Croft (Dalhousie)
|-
|Aerosols
|Implement IPCC AR5 scenarios
|
|Loretta Mickley (Harvard)
 
|-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
|
|
|-
 
|Improved dust simulation in nested-grid model
|-valign="top"
|Rokjin Park (Seoul Nat'l Univ.)
|Updated offline sea salt emissions
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
|Emissions
|
|
|-
 
|Isoprene chemistry
|-valign="top"
|Mat Evans (Leeds)<br>Jingqiu Mao (NOAA/GFDL)
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Paper is in progress
|Sam Silva (MIT)
|-
|Emissions &<br>Science
|Unified emissions pre-processor
|Qiang Zhang (Tsinghua)
|  
|-
|Update Asian emissions
|Qiang Zhang (Tsinghua)
|
|-
|Improve ocean CO2 flux
|Ray Nassar (Environment Canada)<br>Kevin Bowman (JPL)
|
|-
|CESM/CAM5 interface for chemistry-climate
|Rokjin Park (Seoul Nat'l Univ.)<br>Joshua Fu (U. Tennessee)
|
|-
|Standardize the two-film parameterization of air-sea exchange
|[[Hg and POPs Working Group]]
|
|
|-
*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
|
 
|}
|}


--[[User:Melissa Payer|Melissa Payer]] 11:16, 2 December 2011 (EST)
== Over the horizon (6-12 months) ==


=== Longer term (> 12 months)===
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.


{| border=1 cellspacing=0 cellpadding=5
{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
|- bgcolor="#cccccc"
!width="400px"|Item
!width="200px"|Feature
!Author(s)
!width="200px"|Contributor(s)
!Status
!width="100px"|Model scope
|-
!width="420px"|Notes and References
|[[Grid-independent GEOS-Chem]]
 
|[[GEOS-Chem Support Team]]
|-valign="top"
|Development is ongoing
|Snow / Icy Bromine
|-
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
|Improved atmospheric-ocean-land coupling of Hg simulation
|Chemistry
|[[Hg and POPs Working Group]]
|
|  
 
|-
|-valign="top"
|Primary biological aerosol particles (PBAP's)
|Monoterpene oxidation scheme
|Colette Heald (Colo. State)
|Jessica Haskins (MIT)
|Only to be implemented if users identified
|Chemistry
|-
|
|Unified radiative forcing module for GEOS-Chem
 
|[[Aerosols_overview:_projects_and_developments|Aerosols Working Group]]
|-valign="top"
|Under discussion/investigation
|Fire related VOCs including furans
|-
|Lu Hu (UMT)<br>Lixu Jin (UMT)
|Effective meteorolgical fields for dust and sea-salt emissions
|Chemistry
|[[GEOS-Chem Support Team]]
|
|  
 
|-
|-valign="top"
|Dust simulation expansion; tagged simulation, oxalate, Fe, P
|Extension of UCX into the mesosphere
|Matthew Johnson (NCSU)
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
|  
|Chemistry
|-
|
|Benchmark for aerosol deposition
 
|Colette Heald (Colo. State)
|-valign="top"
|TBD
|Methane flux ingestion
|-
|Eloise Marais (UCL)
|Read emission data at native resolution and regrid on the fly
|Chemistry
|[[GEOS-Chem Support Team]]
|
|  
 
|-  
|-valign="top"
|Link column version of GEOS-Chem with GEOS-GCM for chemistry-climate
|Dust non-sphericity impacts on surface chem and optical properties
|[[GEOS-Chem Support Team]]
|Inderjeet Singh (WashU)
|  
|Aerosols
|-
|
|CO2 inhibition effect for isoprene emission
 
|Loretta Mickley (Harvard)
|-valign="top"
|  
|Size-resolved stratospheric aerosol
|-
|Seb Eastham (MIT)
|Replace CASA CO2 biosphere climatology with year-specific fluxes
|Aerosols
|Ray Nassar (Environment Canada)<br>Dylan Jones (U. Toronto)
|
|TBD
 
|-
|-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
|


--[[User:Melissa Payer|Melissa Payer]] 15:17, 6 October 2011 (EDT)
|-valign="top"
|Dry deposition process diagnostics
|Holly Nowell (FSU)
|Diagnostics
|


=== Items no longer being worked on===
|-valign="top"
|Isotope simulation for CO and CH4 in GCHP
|Lee Murray (Rochester)
|Carbon simulation
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
!width="400px"|Item
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
!Author(s)
|Emissions<br>CH4 simulation
!Status
|
|-
|Fix of global OH diagnostic
|Mat Evans (Leeds)<br>Jingqiu Mao (NOAA/GFDL)
|This is no longer an issue after the [[Restart_files#Potential_issue_with_reading_restart.cspec_file|CSPEC restart bug fix]] in v9-01-02 (awaiting release).
|-
|Updated diurnal variation of US NEI emissions
|Rynda Hudman (UC Berkeley)
|  
|-
|}


--[[User:Melissa Payer|Melissa Payer]] 15:17, 6 October 2011 (EDT)
|-valign="top"
|Modularization of aerosols code for interface with GOCART in GEOS
|Christoph Keller (GMAO)
|Structural
|


== List of priorities identified at IGC5 ==
|-valign="top"
|Improve load balancing in GCHP
|Seb Eastham (MIT)
|Model performance
|


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. 
|-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
|


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].
|-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
|


=== For immediate implementation (awaiting release) ===
|-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
|


{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
!width="400px"|Item
!Author(s)
!Status
|-
|[[APM aerosol microphysics]]
|Fangqun Yu (SUNY Albany)
|Added to [[GEOS-Chem v9-01-02|v9-01-02]]; awaiting release
|-
|[[Biomass_burning_emissions#GFED3|GFED3 biomass burning]]
|Prasad Kasibhatla (Duke)
|Added to v9-01-02; awaiting release
|-
|[[Aircraft_emissions#FAA_aircraft_emissions_inventory|FAA/AEDT aircraft emissions inventory]]
|Steven Barrett et al (MIT)
|
|-
|[[Dry_deposition#Aerosol_dry_deposition_velocities_over_snow_and_ice_surfaces|Aerosol deposition over snow/ice]]
|Jenny Fisher (Harvard)
|Added to v9-01-02; awaiting release
|-
|[[Anthropogenic_emissions#Streets_2000|Seasonal variation of Asian NH3 emissions]]
|Jenny Fisher (Harvard)
|Added to v9-01-02; awaiting release
|-
|[[GEOS-Chem_v9-01-02#Aerosol_optical_depth|Cleanup of AOD diagnostics]]
|Sungshik Patrick Kim (Harvard)
|Added to v9-01-02; awaiting release
|-
|[[Implementation_of_RETRO_Anthropogenic_Emissions|RETRO anthropogenic VOC emissions]]
|Dylan Millet (U. Minnesota)
|Added to v9-01-02; awaiting release
|-
|}
|}


--[[User:Bmy|Bob Y.]] 15:56, 23 August 2011 (EDT)
== Longer term (12-24 months)==


=== Ready to go in ===
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
!Author(s)
!width="200px"|Contributor(s)
!Status
!width="100px"|Model scope
|-
!width="420px"|Notes and References
|Nested-grid Hg simulation
 
|Lyatt Jaegl&eacute; (U. Washington)
|-valign="top"
|
|Updates to Aromatic chemistry
|-
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
|Nested-grid CO2 simulation
|Chemistry
|Yuxuan Wang (Tsinghua U.)
|
|
 
|-
|-valign="top"
|Stratospheric P and k (monthly climatological)
|Nitrate photolysis
|Lee Murray (Harvard)
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
|
|Chemistry
|-
|
|Inorganic chemistry updates
|Mat Evans (Leeds)
|
|-
|GEIA 2005 Hg emissions
|Bess Corbitt (Harvard)
|Delivered to GCST
|-
|[[Secondary_organic_aerosols#SOA_simulation_with_semi-volatile_POA|Expanded SOA]]
|Havala Pye (EPA/ORD)
|Delivered to [[GEOS-Chem Support Team|GCST]], undergoing final testing
|-
|Dust submicron size distribution for optics
|David Ridley (Colo. State)
|
|-
|[[Carbon Gases and Organics Working Group#GEIA anthropogenic scaling factors|GEIA emissions scale factor fix]]
|Dylan Millet (U. Minnesota)
|Added to [[GEOS-Chem v9-01-02|v9-01-02]]; awaiting release
|-
|Longwave & shortwave RF codes for chemistry-climate
|Fangqun Yu (SUNY Albany)
|
|-
|Improved sea salt [[Sea salt aerosols#SST dependent sea salt emissions|emission]] & [[Sea salt aerosols#Updates to sea salt dry deposition|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.]] 11:04, 30 August 2011 (EDT)
|-valign="top"
|In aerosol chemistry Halogens
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
|Chemistry
|


=== Almost there (< 6 months) ===
|-valign="top"
|Benchmark box model of GC Chemistry
|Katie Travis (NASA)
|Chemistry
|
 
|-valign="top"
|Alkyl nitrates Alk7, PHAN
|Katie Travis (NASA)
|Chemistry
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Add stratospheric ozone species to full-chemistry simulations
!width="400px"|Item
|Lee Murray (Rochester)
!Author(s)
|Chemistry
!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)
|Slated for [[GEOS-Chem v9-01-03|v9-01-03]]
|-
|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)
|-valign="top"
|Perchlorate chemistry
|Yuk Chun Chan (UWAB)
|Chemistry
|


=== Over the horizon (6-12 months) ===
|-valign="top"
|Explicit heterogeneous sulfate chemistry
|Katie Travis (NASA)<br>Becky Alexander (UT)
|Chemistry
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|HOx and ozone "emissions" from lightning as option in model to play with
!width="400px"|Item
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
!Author(s)
|Emissions
!Status
|-
|Working with [[GEOS-5.7.2|GEOS-5.7.2]]
|[[GEOS-Chem Support Team]]
|Ongoing
|-
|Nested-grid model at 0.25&deg; x 0.3125&deg; resolution
|Yuxuan Wang (Tsinghua)
|
|-
|High-resolution emissions for above nested-grid model
|Yuxuan Wang (Tsinghua)
|
|-
|[[Acetone|Improved acetone simulation]]
|Emily Fischer (Harvard)
|Slated for inclusion in [[GEOS-Chem v9-01-03|v9-01-03]]
|-
|[[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 [[Dicarbonyls simulation|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)
|For more information, please see the [http://acmg.seas.harvard.edu/geos/word_pdf_docs/steering_cmte/stercomm.telecon.ltmurray.GISS.pdf GISS Model E Memo]<br>by (Lee Murray and Loretta Mickley).
|-
|Implement IPCC AR5 scenarios
|Loretta Mickley (Harvard)
|
|
|-
|CO2 inhibition effect for isoprene emission
|Loretta Mickley (Harvard)
|
|-
|}


--[[User:Bmy|Bob Y.]] 11:25, 30 August 2011 (EDT)
|-valign="top"
|Sea salt aerosol from sea ice leads
|Hannah Horowitz (U. Illinois)
|Emissions
|


=== Longer term (> 12 months)===
|-valign="top"
|Drought-stress algorithm
|Wei Li (U. Houston)
|
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Biomass burning injection height profiles
!width="400px"|Item
|Inderjeet Singh (WashU)
!Author(s)
|Emissions
!Status
|-
|[[Grid-independent GEOS-Chem]]
|[[GEOS-Chem Support Team]]
|Development is ongoing
|-
|Improved dust simulation in nested-grid model
|Rokjin Park (Seoul Nat'l Univ.)
|
|-
|Isoprene chemistry
|Mat Evans (Leeds)<br>Jingqiu Mao (NOAA/GFDL)
|
|-
|Improved atmospheric-ocean-land coupling of Hg simulation
|[[Hg and POPs Working Group]]
|
|-
|Unified emissions pre-processor
|Qiang Zhang (Tsinghua)
|
|-
|Update Asian emissions
|Qiang Zhang (Tsinghua)
|  
|-
|Primary biological aerosol particles (PBAP's)
|Colette Heald (Colo. State)
|
|
|-
 
|Unified radiative forcing module for GEOS-Chem
|-valign="top"
|[[Aerosols_overview:_projects_and_developments|Aerosols Working Group]]
|OCIM integration
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
|
|
|-
|Effective meteorolgical fields for dust and sea-salt emissions
|[[GEOS-Chem Support Team]]
|
|-
|Dust simulation expansion; tagged simulation, oxalate, Fe, P
|Matthew Johnson (NCSU)
|
|-
|Cloudwater pH for sulfate formation
|Becky Alexander (U. Washington)
|
|-
|Benchmark for aerosol deposition
|Colette Heald (Colo. State)
|
|
|-
|Tagged sulfate and nitrate simulation
|Becky Alexander (U. Washington)
|
|-
|Read emission data at native resolution and regrid on the fly
|[[GEOS-Chem Support Team]]
|
|-
|Improve ocean CO2 flux and resolution of anthropogenic sources
|Ray Nassar (Environment Canada)
|
|-
|CESM/CAM5 interface for chemistry-climate
|Rokjin Park (Seoul Nat'l Univ.)<br>Joshua Fu (U. Tennessee)
|
|-
|Link column version of GEOS-Chem with GEOS-GCM for chemistry-climate
|[[GEOS-Chem Support Team]]
|
|-
|}


--[[User:Bmy|Bob Y.]] 11:33, 6 June 2011 (EDT)
|-valign="top"
|Updating landcover products in GEOS-Chem
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
|Input data
|


== Items that are now included in GEOS-Chem ==  
|-valign="top"
|Dry deposition physical improvement
|Chris Holmes (FSU)
|Dry deposition
|


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_2011.html 5th International GEOS-Chem Meeting] in 2011 (aka '''IGC5''').
|-valign="top"
|TOMAS WRF-GC in regional Thailand simulation
|Win Trivitayanurak (Chulalongkorn U)
|Aerosols
|


{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
!width="400px"|Item
!Author(s)
!Completion Date
|-
|[[APM aerosol microphysics]]
|Fangqun Yu (SUNY Albany)
|28 Nov 2011 ([[GEOS-Chem v9-01-02|v9-01-02]] release)
|-
|[[Biomass_burning_emissions#GFED3|GFED3 biomass burning]]
|Prasad Kasibhatla (Duke)
|28 Nov 2011 ([[GEOS-Chem v9-01-02|v9-01-02]] release)
|-
|[[Dry_deposition#Aerosol_dry_deposition_velocities_over_snow_and_ice_surfaces|Aerosol deposition over snow/ice]]
|Jenny Fisher (Harvard)
|28 Nov 2011 ([[GEOS-Chem v9-01-02|v9-01-02]] release)
|-
|[[Anthropogenic_emissions#Streets_2000|Seasonal variation of Asian NH3 emissions]]
|Jenny Fisher (Harvard)
|28 Nov 2011 ([[GEOS-Chem v9-01-02|v9-01-02]] release)
|-
|[[GEOS-Chem_v9-01-02#Aerosol_optical_depth|Cleanup of AOD diagnostics]]
|Sungshik Patrick Kim (Harvard)
|28 Nov 2011 ([[GEOS-Chem v9-01-02|v9-01-02]] release)
|-
|[[Implementation_of_RETRO_Anthropogenic_Emissions|RETRO anthropogenic VOC emissions]]
|Dylan Millet (U. Minnesota)
|28 Nov 2011 ([[GEOS-Chem v9-01-02|v9-01-02]] release)
|-
|[[Carbon Gases and Organics Working Group#GEIA anthropogenic scaling factors|GEIA emissions scale factor fix]]
|Dylan Millet (U. Minnesota)
|28 Nov 2011 ([[GEOS-Chem v9-01-02|v9-01-02]] release)
|-
|Chemical updates for atmospheric Hg
|Bess Corbitt (Harvard)<br>Jenny Fisher (Harvard)
|28 Nov 2011 ([[GEOS-Chem v9-01-02|v9-01-02]] release)
|-
|[[Mercury#Anthropogenic_Emissions|GEIA 2005 Hg emissions]]
|Bess Corbitt (Harvard)
|28 Nov 2011 ([[GEOS-Chem v9-01-02|v9-01-02]] release)
|-
|[[Updating_standard_chemistry_with_JPL_10-6#current_standard_chemistry|Documentation of chemical mechanism]]
|Jingqiu Mao (NOAA/GFDL)
|30 Jun 2011
|-
|[http://pumpkin.aquila.infn.it/flexaod/ FlexAOD postprocessor]<br>''NOTE: This is a separate standalone [http://acmg.seas.harvard.edu/geos/geos_software_tools.html software tool].''
|Gabriele Curci (U. L'Aquila)
|26 May 2011
|-
|[[DSMACC chemical box model]]<br>''NOTE: This is a separate standalone [http://acmg.seas.harvard.edu/geos/geos_software_tools.html software tool].''
|Mat Evans (York U.)<br>Jingqiu Mao (Harvard)<br>Eloise Marais (Harvard)
|Summer 2011
|}
|}
--[[User:Bmy|Bob Y.]] 11:53, 28 November 2011 (EST)

Revision as of 20:55, 18 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
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech) 		Emissions Simple
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
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
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple Delivered
  • geos-chem issue #1745
  • Currently on hold while an issue with seasonality in the new CEDS data is being investigated by the authors.

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
KORUS-AQ emissions for East Asia (as an option) Katie Travis (NASA) Emissions Simple
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
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN) 		Chemistry Delivered
June 2023
DMS Chemistry Linia Tashmim (UC Riverside)
William Porter (UC Riverside) 		Chemistry Not delivered
Organic acids (RCOOH) Katie Travis (NASA) Chemistry Not delivered
Improve carbon & nitrogen conservation in reactions Kelvin Bates (Harvard) Chemistry Not delivered
Blowing snow sea salt in TOMAS Betty Croft (Dalhousie) Aerosols Not delivered
Australian anthropogenic Hg emissions Stephen MacFarlane (UOW)
Jenny Fisher (UOW)
Hannah Horowitz (U. Illinois)
Viral Shah (Harvard) 		Hg simulation Not delivered
WRF-GC Hg simulation Xiaotian Xu (Nanjing U.)
Yanxu Zhang (Nanjing U.) 		Hg simulation
WRF-GC 		Not delivered
Updated HgII gas-partical partitioning Kaiyun Liu (Tsinghua U.)
Qingru Wu (Tsinghua U.)
Shuxiao Wang (Tsinghua U.) 		Hg simulation Not delivered
  • Should be option, not default
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry deposition Not delivered

Almost there (< 6 months)

Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.

Feature Contributor(s) Model scope Notes and References
PPN+hv, PPN+OH Robert Ryan (UCL) Chemistry
MBO Michael Vermeuel (UMN) Chemistry
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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