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 Oct 2011 ==
== Merged and awaiting release ==


This is list of planned GEOS-Chem model development items updated from the [[GEOS-Chem model development priorities#List of priorities identified at IGC5|List of priorities identified at IGC5]]. The key model developer or model contact is identified for each item.  
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


=== Awaiting release ===
|-valign="top"
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
|align="center"|'''[[GEOS-Chem 14.6.0]]'''


{| 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]]
|-
|[[Biomass_burning_emissions#GFED3|GFED3 biomass burning]]
|Prasad Kasibhatla (Duke)
|Added to v9-01-02
|-
|[[Dry_deposition#Aerosol_dry_deposition_velocities_over_snow_and_ice_surfaces|Aerosol deposition over snow/ice]]
|Jenny Fisher (Harvard)
|Added to v9-01-02
|-
|[[Anthropogenic_emissions#Streets_2000|Seasonal variation of Asian NH3 emissions]]
|Jenny Fisher (Harvard)
|Added to v9-01-02
|-
|[[GEOS-Chem_v9-01-02#Aerosol_optical_depth|Cleanup of AOD diagnostics]]
|Sungshik Patrick Kim (Harvard)
|Added to v9-01-02
|-
|[[Implementation_of_RETRO_Anthropogenic_Emissions|RETRO anthropogenic VOC emissions]]
|Dylan Millet (U. Minnesota)
|Added to v9-01-02
|-
|[[Carbon Gases and Organics Working Group#GEIA anthropogenic scaling factors|GEIA emissions scale factor fix]]
|Dylan Millet (U. Minnesota)
|Added to v9-01-02
|-
|Chemical updates for atmospheric Hg
|Bess Corbitt (Harvard)<br>Jenny Fisher (Harvard)
|Added to v9-01-02
|-
|GEIA 2005 Hg emissions
|Bess Corbitt (Harvard)
|Delivered to GCST
|-
|Documentation of chemical mechanism
|Jingqiu Mao (NOAA/GFDL)
|Now available. Please see [[Updating_standard_chemistry_with_JPL_10-6#current_standard_chemistry|this wiki page]].
|-
|}
|}


--[[User:Melissa Payer|Melissa Payer]] 15:17, 6 October 2011 (EDT)
== 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"
|New version of CEDS at 0.1 deg
|Dandan Zhang (WashU)
|Emissions
|Simple
|
*[https://github.com/geoschem/geos-chem/pull/2171 geos-chem PR #2171]
 
|-valign="top"
|Use USTAR read from GEOS instead of calculating from U10M and V10M
|Yuanjian Zhang (WashU)
|Emissions
|Simple
|
*[https://github.com/geoschem/HEMCO/pull/279 HEMCO PR #279]
*NOTE: WashU will recompute mass tuning factors for each met field & resolution (GCClassic)
 
|-valign="top"
|Carbon simulation fixes in GCClassic and GCHP
|Melissa Sulprizio (Harvard)<br>Lizzie Lundgren (Harvard)
|Carbon simulation
|Medium
|
*[https://github.com/geoschem/GCHP/issues/440 GCHP issue #440]
*[https://github.com/geoschem/geos-chem/issues/2463 geos-chem issue #2463]
*[https://github.com/geoschem/geos-chem/pull/2510 geos-chem PR #2510]
 
|-valign="top"
|Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver
|Bob Yantosca (Harvard)
|Chemistry
|Medium
|
*[https://github.com/geoschem/geos-chem/pull/2482 geos-chem PR #2482]
*[https://github.com/geoschem/geos-chem/pull/2483 geos-chem PR #2483]
 
|-valign="top"
|Fix obspack - not working in 14.4.0
|Bob Yantosca (Harvard)
|Diagnostics
|Medium
|
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]
 
|-valign="top"
|Make GC-Classic bit-for-bit reproducible upon restart<br>(part 1 of 2)
|Lizzie Lundgren (Harvard)
|GC-Classic
|Medium
|
*[https://github.com/geoschem/geos-chem/pull/2521 geos-chem PR #2521]
 
|-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]


=== Ready to go in ===
|-valign="top"
|Derive convective precipitation flux if using FP/IT generated with Grell-Freitas
|Yuanjian Zhang (WashU)<br>Viral Shah (GMAO)<br>Lizzie Lundgren (Harvard)
|Convection
|Medium
|
*[https://github.com/geoschem/geos-chem/issues/2469 geos-chem Issue #2469]
*[https://github.com/geoschem/geos-chem/pull/2523 geos-chem PR #2523]
 
|-valign="top"
|GCHP mass flux fixes
|Yuanjian Zhang (WashU)
|GCHP
|Simple
|
*[https://github.com/geoschem/GCHP/pull/456 GCHP PR 456]
 
|-valign="top"
|HEMCO log print updates
|Lizzie Lundgren (Harvard)
|ESMs
|Medium
|
*[https://github.com/geoschem/HEMCO/pull/296 HEMCO PR 296]
 
|-valign="top"
|Fix yaml reader bug with certain compilers
|Lizzie Lundgren (Harvard)
|Build
|Simple
|
*[https://github.com/geoschem/geos-chem/pull/2486 geos-chem PR 2486]


{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
!width="400px"|Item
!Author(s)
!Status
|-
|Nested-grid Hg simulation
|Lyatt Jaegl&eacute; (U. Washington)
|Code is ready
|-
|Nested-grid CO2 simulation
|Yuxuan Wang (Tsinghua U.)
|Code delivered to [[GEOS-Chem Support Team|GCST]]; awaiting implementation
|-
|Stratospheric P and k (monthly climatological)
|Lee Murray (Harvard)
|Code is ready
|-
|Inorganic chemistry updates
|Mat Evans (Leeds)
|Code delivered to GCST; awaiting implementation
|-
|[[Secondary_organic_aerosols#SOA_simulation_with_semi-volatile_POA|Expanded SOA]]
|Havala Pye (EPA/ORD)
|Code delivered to GCST; awaiting implementation
|-
|Dust submicron size distribution for optics
|David Ridley (Colo. State)
|Code is ready
|-
|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 GCST, awaiting implementation
|-
|Improved snow scavenging and washout parameterization
|Qiaoqiao Wang (Harvard)
|Code delivered to GCST, awaiting implementation
|-
|[[Soil_NOx_emissions#Updated_soil_NOx_emissions_algorithm|New soil NOx emission module]]
|Rynda Hudman (UC Berkeley)
|Code delivered to GCST, awaiting implementation
|-
|[[EPA/NEI05_North_American_emissions|EPA/NEI2005 Hg emissions for US]]
|Lyatt Jaegl&eacute; (U. Washington)
|Code is ready
|-
|[[Acetone|Improved acetone simulation]]
|Emily Fischer (Harvard)
|Code delivered to GCST, awaiting implementation
|-
|Complete shift of biogenic VOC emissions from GEIA to MEGAN; retire GEIA
|Dylan Millet (U. Minnesota)
|Delivered to GCST, will be done concurrently w/ the improved acetone simulation
|-
|OVOC's dry deposition
|Jingqiu Mao (NOAA/GFDL)
|Code is ready
|-
|[[DSMACC_chemical_box_model|Box model]] version of GEOS-Chem chemical mechanism
|Jingqiu Mao (NOAA/GFDL)
|Code is ready
|-
|[[Sources_and_Sinks_Working_Group#Available_Historical_and_Future_Emissions|Historical emission inventories of SO2, NOx, BC, and POA]]
|Eric Leibensperger (MIT)
|Code delivered to GCST, awaiting implementation
|-
|Methyl peroxy nitrate (MPN) chemistry
|Ellie Browne (UC Berkeley)
|Code delivered to GCST, awaiting implementation
|-
|[[Mineral_dust_aerosols#Surface_chemistry_on_dust|Acid uptake on dust aerosols]]
|T. Duncan Fairlie (NASA/LARC)
|Code delivered to GCST, awaiting implementation
|-
|[[Aircraft_emissions#FAA_aircraft_emissions_inventory|FAA/AEDT aircraft emissions inventory]]
|Steven Barrett et al (MIT)
|Code delivered to GCST, on hold
|-
|}
|}


--[[User:Melissa Payer|Melissa Payer]] 15:17, 6 October 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
{| 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="100px"|Ease of implementation
|Longwave & shortwave RF codes for chemistry-climate
!width="100px"|Delivery status
|Fangqun Yu (SUNY Albany)
!width="300px"|Notes and References
 
|-valign="top"
|Retire CH4, CO2, tagCO simulations in favor of carbon simulation
|Melissa Sulprizio (Harvard)
|Carbon gases
|Simple
|
|
*[https://github.com/geoschem/geos-chem/issues/2387 geos-chem issue #2387]
 
|-valign="top"
|Correct the issue that injection height has been artificially decreased by HEMCO
|Lixu Jun (Montana)
|Emissions
|Simple
|Delivered<br>June 2024
|
*[https://github.com/geoschem/geos-chem/issues/2330 geos-chem issue #2330]
*[https://github.com/geoschem/geos-chem/pull/2358 geos-chem PR #2358]
 
|-valign="top"
|Capability to run GCClassic at 0.125x0.15625 resolution
|Melissa Sulprizio (Harvard)<br>Xiaolin Wang (Harvard)
|Nested grid
|Simple
|Delivered
|
*[https://github.com/geoschem/geos-chem/pull/1980 geos-chem PR #1980]
*[https://github.com/geoschem/HEMCO/pull/290 HEMCO PR #290]
 
|-valign="top"
|Strat-adjusted RF in GCC and GCHP
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Radiation
|Simple
|Delivered
|
*[https://github.com/geoschem/geos-chem/pull/2525 geos-chem PR #2525]
 
|-valign="top"
|Archived TCR-2 OH fields for carbon simulations
|Kazu Miyazaki (JPL)<br>Melissa Sulprizio (Harvard)
|Input data
|Simple
|Data delivered<br>Oct 2024
|
|
|-
*This will be the default OH, but users will have the option of selecting other OH fields
|[[APM aerosol microphysics|APM]] capability for nested grid
*[https://github.com/geoschem/geos-chem/issues/2537 geos-chem issue #2537]
|Fangqun Yu (SUNY Albany)
 
|
|-valign="top"
|-
|Dust non-sphericity impacts on optical properties
|[[TOMAS aerosol microphysics|TOMAS]] capability for nested grid
|Inderjeet Singh (WashU)
|Jeff Pierce (Dalhousie)
|Aerosols
|
|Medium
|-
|Not yet delivered
|Streets future Hg emissions
|Bess Corbitt (Harvard)
|Code is ready, pending paper acceptance
|-
|Hg(II) gas-aerosol partitioning
|Helen Amos (Harvard)
|  
|-
|Update to EDGAR 4 anthropogenic emissions
|Qiang Zhang (Tsinghua)
|
|-
|Satellite-based NOx emission trends
|Lok Lamsal (NASA GSFC)
|Emission trends database is ready; Needs to be implemented into GEOS-Chem
|-
|PARANOX ship plume emissions
|Geert Vinken (Eindhoven)
|Code is ready, pending paper acceptance
|-
|Interannual lightning
|Lee Murray (Harvard)
|
|
|-
 
|Primary marine OA emissions
|Kateryna Lapina (CSU)
|
|-
|Implement GISS advection scheme for GISS-driven applications
|[[GEOS-Chem Support Team]]
|
|-
|[[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)
|
|-
|}
|}


--[[User:Melissa Payer|Melissa Payer]] 15:17, 6 October 2011 (EDT)
== 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 Refereneces
 
 
|-valign="top"
|Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol
|Camilo Serrano (McGill)<br>Andreas Zuend (McGill)
|Aerosols
|Not delivered
|
*[https://github.com/geoschem/geos-chem/issues/2392 geos-chem issue #2392]
 
|-valign="top"
|Update UCX to include gravitational settling of aerosol species beyond just BCPI
|Conor Barker (UCL)<br>Eloise Marais (UCL)
|Aerosols
|Not delivered
|
 
|-valign="top"
|Seasalt aerosol from sea ice leads (2002-2011)
|Hannah Horrowitz (UIUC)
|Aerosols
|Not delivered
|
*Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
 
|-valign="top"
|Global organic N dep from various emissions; nitrate aromatics updates
|May Fu (SUSTech)
|Chemistry +<br>Deposition
|Not delivered
|
 
|-valign="top"
|Dry deposition to F90 to improve readability
|Chris Holmes (FSU)
|Dry Deposition
|Not delivered
|
*[https://github.com/geoschem/geos-chem/issues/2389 geos-chem issue #2389]
 
|-valign="top"
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Joey Lam  (CUHK)<br>Amos Tai (CUHK)
|Dry deposition
|Delivered<br>Feb 2021
|
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
 
|-valign="top"
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
|Chris Holmes (FSU)
|Emissions
|Not delivered
|
*[https://github.com/geoschem/geos-chem/issues/2388 geos-chem issue #2388]
 
|-valign="top"
|China agriculture NH3 emissions
|Amos Tai (CUHK)
|Emissions
|Not delivered
|
 
|-valign="top"
|T-dependent anthropogenic VOCs
|May Fu (SUSTech)
|Emissions
|Not delivered
|
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.
 
|-valign="top"
|New source functions for transport tracers beryllium-7 and beryllium-10
|Minjie Zheng (ETH)
|Emissions
|Delivered<br>June 2024
|
*Available at https://zenodo.org/records/8372652
 
|-valign="top"
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Yang Li (Baylor U)<br>Loretta Mickley (Harvard)
|Emissions
|Delivered
|
*Data involves many files- need to think about temporal frequency
 
|-valign="top"
|Australian Hg emissions (2000-2019)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Emissions
|Not delivered
|
*[https://pubs.rsc.org/en/content/articlelanding/2022/em/d2em00019a MacFarlane et al. (2024)]
*Includes emissions from black and brown coal power plants, various metal production/processing sources (Aluminium, gold, copper, lead, etc), waste products, cement production, oil refining and petroleum, chlor alkali plants, and cremation
 
|-valign="top"
|Hg geogenic emissions (volcanic, rock weathering)
|Eric Roy (MIT)
|Emissions
|Not delivered
|
*[https://github.com/geoschem/geos-chem/issues/2361 geos-chem #2361]
*[https://gmd.copernicus.org/preprints/gmd-2024-65/ Dastoor et al. (2024)]


=== Over the horizon (6-12 months) ===
|-valign="top"
|Hg biomass burning - FINN2.5 & GFED4
|Eric Roy (MIT)
|Emissions
|Not delivered
|
*[https://github.com/geoschem/geos-chem/issues/2361 geos-chem #2361]
*[https://gmd.copernicus.org/preprints/gmd-2024-65/ Dastoor et al. (2024)]


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|BCC-GC online
!width="400px"|Item
|Lin Zhang (PKU)
!Author(s)
|External Model
!Status
|Not delivered
|-
|
|Update HCN simulation
 
|Qian Li (U. Edinburgh)<br>Dylan Jones (U. Toronto)
|-valign="top"
|  
|GC-YIBS with online fire emissions
|-
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
|Working with [[GEOS-5.7.2|GEOS-5.7.2]]
|External Model
|[[GEOS-Chem Support Team]]
|Not delivered
|Development is 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)
|
|-
|Improved planeflight diagnostic
|Mat Evans (Leeds)
|
|-
|Chemistry diagnostics
|Mat Evans (Leeds)
|
|-
|Improved operator splitting
|Mauricio Santillana (Harvard)
|Development is ongoing
|-
|3-D VOC source for [[Tagged_CO_simulation|tagged CO simulations]]
|Dylan Jones (U. Toronto)
|
|-
|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)
|
|
|-
 
|Improved dust simulation in nested-grid model
|-valign="top"
|Rokjin Park (Seoul Nat'l Univ.)
|GISS-GC offline (GCAP)
|Lee Murray (Rochester)
|GCAP
|Not delivered
|
|
|-
 
|Isoprene chemistry
|Mat Evans (Leeds)<br>Jingqiu Mao (NOAA/GFDL)
|Paper is in progress
|-
|Unified emissions pre-processor
|Qiang Zhang (Tsinghua)
|
|-
|Update Asian emissions
|Qiang Zhang (Tsinghua)
|
|-
|CESM/CAM5 interface for chemistry-climate
|Rokjin Park (Seoul Nat'l Univ.)<br>Joshua Fu (U. Tennessee)
|
|-
|}
|}


--[[User:Melissa Payer|Melissa Payer]] 15:17, 6 October 2011 (EDT)
== Almost there (< 6 months) ==


=== Longer term (> 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
|[[Grid-independent GEOS-Chem]]
 
|[[GEOS-Chem Support Team]]
|-valign="top"
|Development is ongoing
|Fixes to stratospheric aerosol settling
|-
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Improved atmospheric-ocean-land coupling of Hg simulation
|Aerosols
|[[Hg and POPs Working Group]]
|
|  
 
|-
|-valign="top"
|Primary biological aerosol particles (PBAP's)
|DMS chemistry in v14
|Colette Heald (Colo. State)
|Linia Tashmim (UCR)<br>Will Porter (UCR)
|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
|KPP standalone + 3D Interface
|-
|Obin Sturm (USC)
|Effective meteorolgical fields for dust and sea-salt emissions
|Chemistry
|[[GEOS-Chem Support Team]]
|
|  
 
|-
|-valign="top"
|Dust simulation expansion; tagged simulation, oxalate, Fe, P
|NO2+OH+H2O kinetics
|Matthew Johnson (NCSU)
|Mat Evans (York)
|  
|Chemistry
|-
|
|Benchmark for aerosol deposition
 
|Colette Heald (Colo. State)
|-valign="top"
|TBD
|LSODES solver in KPP for faster kinetics
|-
|Haipeng Lin (Harvard)
|Read emission data at native resolution and regrid on the fly
|Chemistry
|[[GEOS-Chem Support Team]]
|
|  
 
|-  
|-valign="top"
|Improve ocean CO2 flux and resolution of anthropogenic sources
|Load balancing in chemistry solver (GCHP)
|Ray Nassar (Environment Canada)
|Zhouran Sun (WashU)
|  
|Chemistry +<br>Performance
|-
|
|Link column version of GEOS-Chem with GEOS-GCM for chemistry-climate
 
|[[GEOS-Chem Support Team]]
|-valign="top"
|  
|Active chemistry in mesosphere for both GCHP and GCClassic
|-
|Helena McDonald (MIT)<br>Sebastian Eastham (ICL)
|CO2 inhibition effect for isoprene emission
|Chemistry
|Loretta Mickley (Harvard)
|
|  
 
|-
|-valign="top"
|Replace CASA CO2 biosphere climatology with year-specific fluxes
|Updated aromatic oxidation
|Ray Nassar (Environment Canada)<br>Dylan Jones (U. Toronto)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|TBD
|Chemistry
|-
|
 
|-valign="top"
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Laura Yang (Harvard)
|Chemistry
|
 
|-valign="top"
|Implement isotope simulation for CH4 in the carbon simulation
|Lee Murray (Rochester)
|Chemistry
|
*Will have to change negative emissions from soil to a first-order loss process
 
|-valign="top"
|Documentation for adding additional aerosol species
|Connor Barker (UCL)
|Documentation
|
 
|-valign="top"
|Column diagnostics
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
|Diagnostics
|
 
|-valign="top"
|TOMAS rate diagnostics -- improve performance
|Betty Croft (WashU/Dal)
|Diagnostics +<br>Performance
|
 
|-valign="top"
|Archive gamma values from heterogeneous chemistry
|Bob Yantosca (Harvard)
|Diagnostics
|
 
|-valign="top"
|RRTMG Documentation
|GCST
|Documentation
|
 
|-valign="top"
|Canopy Physics Model
|Sam Silva (MIT)
|Dry Deposition
|
*Available at https://zenodo.org/records/3614062#.XzvrH5NKjOR (GEOS-Chem 12.3.0)
 
|-valign="top"
|Dry deposition diagnostics by land cover
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Dry Deposition
|
 
|-valign="top"
|Dry deposition process diagnostics
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Dry Deposition
|
 
|-valign="top"
|Biomass burning for TOMAS
|Nicole June (CSU)
|Emissions +<br>Microphysics
|
 
|-valign="top"
|Historic biomass burning (1750-2010)
|Pengfei Liu (Georgia Tech)
|Emissions
|
 
|-valign="top"
|Rice methane emissions
|Zichong Cheng (Harvard)
|Emissions+<br>Carbon simulation
|
 
|-valign="top"
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
|Emissions
|
 
|-valign="top"
|New prior CO2 biospheric fluxes from CMS-FLUX and GMAO
|Kevin Bowman (JPL)<br>Lesley Ott (GMAO)
|Emissions
|
*GMAO can provide high-resolution fluxes (as high as 12 km)
 
|-valign="top"
|Snowpack Br2 emission
|Chris Holmes (FSU)
|Emissions
|
 
|-valign="top"
|EDGAR v8.1_toxHg emissions for 1970-2022
|Eric Roy (MIT)
|Emissions
|
 
|-valign="top"
|Improve pressure handling in GCHP advection
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
|GCHP
|
 
|-valign="top"
|Add error trap for duplicate scale factors in HEMCO
|Bob Yantosca (Harvard)
|HEMCO
|
 
|-valign="top"
|Integration testing: Add stretched grid
|Lizzie Lundgren (Harvard)
|Quality Assurance
|
 
|-valign="top"
|Integration testing: Add GCHP mass flux run
|Lizzie Lundgren (Harvard)
|Quality Assurance
|
 
|-valign="top"
|Integration testing: Reinstate TOMAS40
|Betty Croft (Dalhousie/WashU)
|Quality Assurance
|
 
|-valign="top"
|Continue cleanup of C-preprocessor switches
|Lizzie Lundgren (Harvard)
|Structural
|
 
|-valign="top"
|Updates to Luo deposition scheme
|Gan Luo (Albany)
|Wet Deposition
|
*New version, keep as switch (not default)
 
|-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 (Albany)<br>Fangqun Yu (Albany)
|Wet Deposition
|
 
|}
|}


--[[User:Melissa Payer|Melissa Payer]] 15:17, 6 October 2011 (EDT)
== Over the horizon (6-12 months) ==


=== Items no longer being worked on===
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
|Fix of global OH diagnostic
 
|Mat Evans (Leeds)<br>Jingqiu Mao (NOAA/GFDL)
|-valign="top"
|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).
|ML algorithms for bulk aerosol
|-
|Arshad Nair (Albany)<br>Fangqun Yu (Albany)
|Updated diurnal variation of US NEI emissions
|Aerosols
|Rynda Hudman (UC Berkeley)
|
|  
 
|-
|-valign="top"
|}
|Heterogeneous sulfate chemistry
|Katie Travis (NASA)
|Chemistry
|
 
|-valign="top"
|H2 as an active species
|Seb Eastham (ICL)
|Chemistry
|
 
|-valign="top"
|HCN, acetonitrile as fire tracers
|Kevin Bates (CU Boulder)
|Chemistry
|
 
|-valign="top"
|Implement ethane in carbon simulation
|Yuzhong Zhang (Westlake)
|Chemistry
|
 
|-valign="top"
|Mesospheric source of CO
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
|Emissions
|
 
|-valign="top"
|Drought-stress algorithm
|Wei Li (Houston)
|Emissions
|
 
|-valign="top"
|Physically-based resolution correction for BVOC emissions using MEGAN
|May Fu (SUSTech)
|Emissions
|
 
|-valign="top"
|Canadian forest fire prediction system (Canada government forecast model)
|Robin Stevens (Montreal)
|Emissions
|
 
|-valign="top"
|Cooking emissions (not biofuel)
|Kelvin Bates (CU Boulder)
|Emissions
|
 
|-valign="top"
|State-specific annual emissions scaling factors (US) (1990-2021)
|Ishir Dutta (MIT)
|Emissions
|
 
|-valign="top"
|GISS-GC online
|Lee Murray (Rochester)
|External model
|
 
|-valign="top"
|Hybrid MPI-OpenMP in GCHP
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Wildcards in GCHP History
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Output emissions with positive up convention in GCHP
|Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Bob Yantosca (Harvard)
|Performance
|
 
|-valign="top"
|Photophysical oxidation of aldehydes
|Paulo Sebastianelli (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
 
|-valign="top"
|DMS updates
|Will Porter (UCR)
|Chemistry
|


--[[User:Melissa Payer|Melissa Payer]] 15:17, 6 October 2011 (EDT)
|-valign="top"
|Furans emission and chemistry
|Lixu Jin (Montana)<br>Lu Hu (Montana)
|Chemistry + <br>Emissions
|


== List of priorities identified at IGC5 ==
|-valign="top"
|Cl2 prodcution from Fe aerosol
|Qianjie Chen (HK Poly)<br>Becky Alexander (UW)
|Chemistry
|


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"
|VCP emissions
|Kevin Bates (CU Boulder)
|Emissions
|


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"
|Bidirectional land-atmosphere exchange for Hg
|Yuying Cui (MIT/Tsinghua)
|Hg simulation
|
 
|-valign="top"
|OH covariances for inversions
|Elise Penn (Harvard)
|Inversions
|


=== For immediate implementation (awaiting release) ===
|-valign="top"
|CESM2-GC offline
|Seb Eastham (ICL)<br>Lee Murray (Rochester)
|Met fields
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Re-binning of off-line sea salt and dust for TOMAS
!width="400px"|Item
|Betty Croft (Dalhousie)
!Author(s)
|Microphysics
!Status
|
|-
 
|[[APM aerosol microphysics]]
|-valign="top"
|TOMAS nucleation updates
|Sam O'Donnell (CSU)
|Microphysics
|
 
|-valign="top"
|Stratospheric aerosol APM
|Fangqun Yu (SUNY Albany)
|Fangqun Yu (SUNY Albany)
|Added to [[GEOS-Chem v9-01-02|v9-01-02]]; awaiting release
|Microphysics
|-
|
|[[Biomass_burning_emissions#GFED3|GFED3 biomass burning]]
 
|Prasad Kasibhatla (Duke)
|-valign="top"
|Added to v9-01-02; awaiting release
|Transition from MERRA-2 to GEOS-IT for benchmarking
|-
|Yuanjian Zhang (WashU)
|[[Aircraft_emissions#FAA_aircraft_emissions_inventory|FAA/AEDT aircraft emissions inventory]]
|Quality Assurance
|Steven Barrett et al (MIT)
|
|  
 
|-
|-valign="top"
|[[Dry_deposition#Aerosol_dry_deposition_velocities_over_snow_and_ice_surfaces|Aerosol deposition over snow/ice]]
|Automate integration testing on AWS
|Jenny Fisher (Harvard)
|Yidan Tang (WashU)
|Added to v9-01-02; awaiting release
|Quality Assurance
|-
|
|[[Anthropogenic_emissions#Streets_2000|Seasonal variation of Asian NH3 emissions]]
 
|Jenny Fisher (Harvard)
|-valign="top"
|Added to v9-01-02; awaiting release
|Integration testing: Add across end of year run
|-
|GCST
|[[GEOS-Chem_v9-01-02#Aerosol_optical_depth|Cleanup of AOD diagnostics]]
|Quality Assurance
|Sungshik Patrick Kim (Harvard)
|
|Added to v9-01-02; awaiting release
 
|-
|-valign="top"
|[[Implementation_of_RETRO_Anthropogenic_Emissions|RETRO anthropogenic VOC emissions]]
|Integration testing: Add GEOS-IT
|Dylan Millet (U. Minnesota)
|Yuanjian Zhang (WashU)
|Added to v9-01-02; awaiting release
|Quality Assurance
|-
|
 
|-valign="top"
|Separate mixing, emissions, and drydep
|Yuanjian Zhang (WashU)
|Structural
|
 
|-valign="top"
|Intel IFX compiler
|Bob Yantosca (Harvard)
|Structural
|
 
|-valign="top"
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
|Structural
|
 
|-valign="top"
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
|Lizzie Lundgren (Harvard)
|Structural
|
 
|-valign="top"
|Limit allocation of State_Met to what is needed per simulation
|Melissa Sulprizio (Harvard)
|Structural
|
 
|-valign="top"
|Using 3-D precipitation fluxes to calculate precipitation formation and re-evaporation in scavenging (to be consistent with GEOS/GOCART & ground precipitation)
|Gan Luo (Albany)<br>Hongyu Liu (NIA/LaRC)<br>Bo Zhang (NIA/LaRC)
|Wet deposition
|
 
|}
|}


--[[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"
|  
|Modal aerosol model (MAM7) in GCHP
|-
|Shreya Sharma (MIT)
|Nested-grid CO2 simulation
|Aerosols
|Yuxuan Wang (Tsinghua U.)
|
|  
 
|-
|-valign="top"
|Stratospheric P and k (monthly climatological)
|Online OCIM ocean biogeochemistry
|Lee Murray (Harvard)
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
|  
|Chemistry
|-
|
|Inorganic chemistry updates
 
|Mat Evans (Leeds)
|-valign="top"
|  
|Perchlorate chemistry
|-
|Yuk Chun Chan (UW)
|GEIA 2005 Hg emissions
|Chemistry
|Bess Corbitt (Harvard)
|
|Delivered to GCST
 
|-
|-valign="top"
|[[Secondary_organic_aerosols#SOA_simulation_with_semi-volatile_POA|Expanded SOA]]
|Non-stomatal dry deposition (2-layer canopy model)
|Havala Pye (EPA/ORD)
|Michael Vermeuel (Purdue)
|Delivered to [[GEOS-Chem Support Team|GCST]], undergoing final testing
|Dry Deposition
|-
|
|Dust submicron size distribution for optics
 
|David Ridley (Colo. State)
|-valign="top"
|  
|Continental chloride particle emissions (salty dust, road salt)
|-
|Jessica Haskins (Utah)
|[[Carbon Gases and Organics Working Group#GEIA anthropogenic scaling factors|GEIA emissions scale factor fix]]
|Emissions
|Dylan Millet (U. Minnesota)
|
|Added to [[GEOS-Chem v9-01-02|v9-01-02]]; awaiting release
 
|-
|-valign="top"
|Longwave & shortwave RF codes for chemistry-climate
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
|Fangqun Yu (SUNY Albany)
|Ruochong (Tshingua)
|  
|Emissions
|-
|
|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)
|-valign="top"
|Code delivered to [[GEOS-Chem Support Team|GCST]], awaiting implementation
|Lightning NOx production rates
|-
|Bex Horner (UCL)
|Improved snow scavenging and washout parameterization
|Emissions
|Qiaoqiao Wang (Harvard)
|
|  
 
|-
|-valign="top"
|}
|HFO and CF3CHO
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
 
|-valign="top"
|Glyoxal updates from isoprene
|Tzung-May Fu (SUSTech)
|Chemistry
|
 
|-valign="top"
|Iodine chemistry
|Becky Alexander (UW)<br>Xuan Wang (CUHK)
|Chemistry
|
 
|-valign="top"
|GFED5 biomass burning
|Eric Roy (MIT)
|Emissions
|
 
|-valign="top"
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|
 
|-valign="top"
|Soil Hg emissions 2010-2020
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|
 
|-valign="top"
|Air-sea exchange parameterization
|Eric Roy (MIT)
|Hg simulation
|
 
|-valign="top"
|Soil Hg emissions parameterization
|Ari Feinberg (IQF-CSIC)
|Hg simulation
|


--[[User:Bmy|Bob Y.]] 11:04, 30 August 2011 (EDT)
|-valign="top"
|Sea salt uptake of GOM
|Eric Roy (MIT)
|Hg simulation
|


=== Almost there (< 6 months) ===
|-valign="top"
|Photoreduction rate constant
|Eric Roy (MIT)
|Hg simulation
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|New observations (2010-2020) in standardized Hg benchmark for intercomparison
!width="400px"|Item
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
!Author(s)
|Hg simulation
!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"
|Hg simulation in GCHP
|Eric Roy (MIT)
|Hg simulation
|


=== Over the horizon (6-12 months) ===
|-valign="top"
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
|Hannah Horowitz (UIUC)
|Hg simulation
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Possibly updating Hg oxidation chemistry based on Utah field campaigns
!width="400px"|Item
|Jessica Haskins (Utah)
!Author(s)
|Hg simulation
!Status
|
|-
 
|Working with [[GEOS-5.7.2|GEOS-5.7.2]]
|-valign="top"
|[[GEOS-Chem Support Team]]
|New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online
|Ongoing
|Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC)
|-
|Input data
|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"
|Extend IMI to CO2 (ICI)
|Hannah Nesser (JPL)  
|Inversions
|


=== Longer term (> 12 months)===
|-valign="top"
|Global emission inventory of metals
|Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U)
|Metals simulation
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Investigate and improve performance of aerosol chemistry
!width="400px"|Item
|Bob Yantosca (Harvard)
!Author(s)
|Performance
!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]]
|PAH - update from version 11
|Lexia Cicone (MIT)
|POPs simulation
|
|
|-
 
|Effective meteorolgical fields for dust and sea-salt emissions
|-valign="top"
|[[GEOS-Chem Support Team]]
|Species database more accessible; doc updates; TOL discussion
|
|Jessica Haskins (Utah)
|-
|Structural
|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"
|Stretched-grid plotting in GCPy
|Killian Murphy (York)
|Tools
|


== Items that are now included in GEOS-Chem ==
|-valign="top"
|Model inter-comparison of transport (GEOS, GCHP, GCClassic)
|Lizzie Lundgren (Harvard), Emma Knowland (NASA)
|Transport
|


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"
|Comparing mass fluxes in GCHP vs. traditional lat/lon wind
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
|Transport
|


{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
!width="400px"|Item
!Author(s)
!Completion Date
|-
|[http://pumpkin.aquila.infn.it/flexaod/ FlexAOD postprocessor]
|Gabriele Curci (U. L'Aquila)
|26 May 2011
|-
|}
|}
--[[User:Bmy|Bob Y.]] 12:31, 13 June 2011 (EDT)

Latest revision as of 15:23, 20 November 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 14.6.0

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
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple
Use USTAR read from GEOS instead of calculating from U10M and V10M Yuanjian Zhang (WashU) Emissions Simple
  • HEMCO PR #279
  • NOTE: WashU will recompute mass tuning factors for each met field & resolution (GCClassic)
Carbon simulation fixes in GCClassic and GCHP Melissa Sulprizio (Harvard)
Lizzie Lundgren (Harvard) 		Carbon simulation Medium
Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver Bob Yantosca (Harvard) Chemistry Medium
Fix obspack - not working in 14.4.0 Bob Yantosca (Harvard) Diagnostics Medium
Make GC-Classic bit-for-bit reproducible upon restart
(part 1 of 2) 		Lizzie Lundgren (Harvard) GC-Classic Medium
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics Medium
Derive convective precipitation flux if using FP/IT generated with Grell-Freitas Yuanjian Zhang (WashU)
Viral Shah (GMAO)
Lizzie Lundgren (Harvard) 		Convection Medium
GCHP mass flux fixes Yuanjian Zhang (WashU) GCHP Simple
HEMCO log print updates Lizzie Lundgren (Harvard) ESMs Medium
Fix yaml reader bug with certain compilers Lizzie Lundgren (Harvard) Build Simple

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
Retire CH4, CO2, tagCO simulations in favor of carbon simulation Melissa Sulprizio (Harvard) Carbon gases Simple
Correct the issue that injection height has been artificially decreased by HEMCO Lixu Jun (Montana) Emissions Simple Delivered
June 2024
Capability to run GCClassic at 0.125x0.15625 resolution Melissa Sulprizio (Harvard)
Xiaolin Wang (Harvard) 		Nested grid Simple Delivered
Strat-adjusted RF in GCC and GCHP Connor Barker (UCL)
Eloise Marais (UCL) 		Radiation Simple Delivered
Archived TCR-2 OH fields for carbon simulations Kazu Miyazaki (JPL)
Melissa Sulprizio (Harvard) 		Input data Simple Data delivered
Oct 2024
  • This will be the default OH, but users will have the option of selecting other OH fields
  • geos-chem issue #2537
Dust non-sphericity impacts on optical properties Inderjeet Singh (WashU) Aerosols Medium Not yet delivered

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 Refereneces


Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol Camilo Serrano (McGill)
Andreas Zuend (McGill) 		Aerosols Not delivered
Update UCX to include gravitational settling of aerosol species beyond just BCPI Conor Barker (UCL)
Eloise Marais (UCL) 		Aerosols Not delivered
Seasalt aerosol from sea ice leads (2002-2011) Hannah Horrowitz (UIUC) Aerosols Not delivered
  • Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
Global organic N dep from various emissions; nitrate aromatics updates May Fu (SUSTech) Chemistry +
Deposition 		Not delivered
Dry deposition to F90 to improve readability Chris Holmes (FSU) Dry Deposition Not delivered
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam (CUHK)
Amos Tai (CUHK) 		Dry deposition Delivered
Feb 2021
FRP-based fire emissions for eastern US at 0.2 (2019-2020) Chris Holmes (FSU) Emissions Not delivered
China agriculture NH3 emissions Amos Tai (CUHK) Emissions Not delivered
T-dependent anthropogenic VOCs May Fu (SUSTech) Emissions Not delivered
  • Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.
New source functions for transport tracers beryllium-7 and beryllium-10 Minjie Zheng (ETH) Emissions Delivered
June 2024
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor U)
Loretta Mickley (Harvard) 		Emissions Delivered
  • Data involves many files- need to think about temporal frequency
Australian Hg emissions (2000-2019) Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Emissions Not delivered
  • MacFarlane et al. (2024)
  • Includes emissions from black and brown coal power plants, various metal production/processing sources (Aluminium, gold, copper, lead, etc), waste products, cement production, oil refining and petroleum, chlor alkali plants, and cremation
Hg geogenic emissions (volcanic, rock weathering) Eric Roy (MIT) Emissions Not delivered
Hg biomass burning - FINN2.5 & GFED4 Eric Roy (MIT) Emissions Not delivered
BCC-GC online Lin Zhang (PKU) External Model Not delivered
GC-YIBS with online fire emissions Xu Yue (NUIST)
Hong Liao (NUIST) 		External Model Not delivered
GISS-GC offline (GCAP) Lee Murray (Rochester) GCAP 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
Fixes to stratospheric aerosol settling Connor Barker (UCL)
Eloise Marais (UCL) 		Aerosols
DMS chemistry in v14 Linia Tashmim (UCR)
Will Porter (UCR) 		Chemistry
KPP standalone + 3D Interface Obin Sturm (USC) Chemistry
NO2+OH+H2O kinetics Mat Evans (York) Chemistry
LSODES solver in KPP for faster kinetics Haipeng Lin (Harvard) Chemistry
Load balancing in chemistry solver (GCHP) Zhouran Sun (WashU) Chemistry +
Performance
Active chemistry in mesosphere for both GCHP and GCClassic Helena McDonald (MIT)
Sebastian Eastham (ICL) 		Chemistry
Updated aromatic oxidation Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
MCO3 uptake by cloud forming MP; leading to lower PAN Laura Yang (Harvard) Chemistry
Implement isotope simulation for CH4 in the carbon simulation Lee Murray (Rochester) Chemistry
  • Will have to change negative emissions from soil to a first-order loss process
Documentation for adding additional aerosol species Connor Barker (UCL) Documentation
Column diagnostics Lizzie Lundgren (Harvard)
Viral Shah (GMAO) 		Diagnostics
TOMAS rate diagnostics -- improve performance Betty Croft (WashU/Dal) Diagnostics +
Performance
Archive gamma values from heterogeneous chemistry Bob Yantosca (Harvard) Diagnostics
RRTMG Documentation GCST Documentation
Canopy Physics Model Sam Silva (MIT) Dry Deposition
Dry deposition diagnostics by land cover Holly Nowell (FSU)
Chris Holmes (FSU) 		Dry Deposition
Dry deposition process diagnostics Holly Nowell (FSU)
Chris Holmes (FSU) 		Dry Deposition
Biomass burning for TOMAS Nicole June (CSU) Emissions +
Microphysics
Historic biomass burning (1750-2010) Pengfei Liu (Georgia Tech) Emissions
Rice methane emissions Zichong Cheng (Harvard) Emissions+
Carbon simulation
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Tia Scarpelli (Carbon Mapper)
Melissa Sulprizio (Harvard) 		Emissions
New prior CO2 biospheric fluxes from CMS-FLUX and GMAO Kevin Bowman (JPL)
Lesley Ott (GMAO) 		Emissions
  • GMAO can provide high-resolution fluxes (as high as 12 km)
Snowpack Br2 emission Chris Holmes (FSU) Emissions
EDGAR v8.1_toxHg emissions for 1970-2022 Eric Roy (MIT) Emissions
Improve pressure handling in GCHP advection Yuanjian Zhang (WashU)
Seb Eastham (ICL) 		GCHP
Add error trap for duplicate scale factors in HEMCO Bob Yantosca (Harvard) HEMCO
Integration testing: Add stretched grid Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Add GCHP mass flux run Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Reinstate TOMAS40 Betty Croft (Dalhousie/WashU) Quality Assurance
Continue cleanup of C-preprocessor switches Lizzie Lundgren (Harvard) Structural
Updates to Luo deposition scheme Gan Luo (Albany) Wet Deposition
  • New version, keep as switch (not default)
Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer Gan Luo (Albany)
Fangqun Yu (Albany) 		Wet Deposition

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
ML algorithms for bulk aerosol Arshad Nair (Albany)
Fangqun Yu (Albany) 		Aerosols
Heterogeneous sulfate chemistry Katie Travis (NASA) Chemistry
H2 as an active species Seb Eastham (ICL) Chemistry
HCN, acetonitrile as fire tracers Kevin Bates (CU Boulder) Chemistry
Implement ethane in carbon simulation Yuzhong Zhang (Westlake) Chemistry
Mesospheric source of CO Dylan Jones (UofT)
Pam Wales (NASA GSFC) 		Emissions
Drought-stress algorithm Wei Li (Houston) Emissions
Physically-based resolution correction for BVOC emissions using MEGAN May Fu (SUSTech) Emissions
Canadian forest fire prediction system (Canada government forecast model) Robin Stevens (Montreal) Emissions
Cooking emissions (not biofuel) Kelvin Bates (CU Boulder) Emissions
State-specific annual emissions scaling factors (US) (1990-2021) Ishir Dutta (MIT) Emissions
GISS-GC online Lee Murray (Rochester) External model
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York)
Lizzie Lundgren (Harvard) 		GCHP
MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files Lizzie Lundgren (Harvard) GCHP
MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files Lizzie Lundgren (Harvard) GCHP
MAPL3: Wildcards in GCHP History Lizzie Lundgren (Harvard) GCHP
MAPL3: Output emissions with positive up convention in GCHP Lizzie Lundgren (Harvard) GCHP
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Performance
Photophysical oxidation of aldehydes Paulo Sebastianelli (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
DMS updates Will Porter (UCR) Chemistry
Furans emission and chemistry Lixu Jin (Montana)
Lu Hu (Montana) 		Chemistry +
Emissions
Cl2 prodcution from Fe aerosol Qianjie Chen (HK Poly)
Becky Alexander (UW) 		Chemistry
VCP emissions Kevin Bates (CU Boulder) Emissions
Bidirectional land-atmosphere exchange for Hg Yuying Cui (MIT/Tsinghua) Hg simulation
OH covariances for inversions Elise Penn (Harvard) Inversions
CESM2-GC offline Seb Eastham (ICL)
Lee Murray (Rochester) 		Met fields
Re-binning of off-line sea salt and dust for TOMAS Betty Croft (Dalhousie) Microphysics
TOMAS nucleation updates Sam O'Donnell (CSU) Microphysics
Stratospheric aerosol APM Fangqun Yu (SUNY Albany) Microphysics
Transition from MERRA-2 to GEOS-IT for benchmarking Yuanjian Zhang (WashU) Quality Assurance
Automate integration testing on AWS Yidan Tang (WashU) Quality Assurance
Integration testing: Add across end of year run GCST Quality Assurance
Integration testing: Add GEOS-IT Yuanjian Zhang (WashU) Quality Assurance
Separate mixing, emissions, and drydep Yuanjian Zhang (WashU) Structural
Intel IFX compiler Bob Yantosca (Harvard) Structural
CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code Bob Yantosca (Harvard)
Lee Murray (Rochester) 		Structural
Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO Lizzie Lundgren (Harvard) Structural
Limit allocation of State_Met to what is needed per simulation Melissa Sulprizio (Harvard) Structural
Using 3-D precipitation fluxes to calculate precipitation formation and re-evaporation in scavenging (to be consistent with GEOS/GOCART & ground precipitation) Gan Luo (Albany)
Hongyu Liu (NIA/LaRC)
Bo Zhang (NIA/LaRC) 		Wet deposition

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
Modal aerosol model (MAM7) in GCHP Shreya Sharma (MIT) Aerosols
Online OCIM ocean biogeochemistry Lee Murray (Rochester)
Hannah Horowitz (UIUC)
Chris Holmes (FSU) 		Chemistry
Perchlorate chemistry Yuk Chun Chan (UW) Chemistry
Non-stomatal dry deposition (2-layer canopy model) Michael Vermeuel (Purdue) Dry Deposition
Continental chloride particle emissions (salty dust, road salt) Jessica Haskins (Utah) Emissions
Multivolatility emission inventory to address gaps in EDGAR/HTAP etc. Ruochong (Tshingua) Emissions
Lightning NOx production rates Bex Horner (UCL) Emissions
HFO and CF3CHO Beth Killen (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
Glyoxal updates from isoprene Tzung-May Fu (SUSTech) Chemistry
Iodine chemistry Becky Alexander (UW)
Xuan Wang (CUHK) 		Chemistry
GFED5 biomass burning Eric Roy (MIT) Emissions
Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble Eric Roy (MIT)
Ari Feinberg (IQF-CSIC) 		Hg simulation
Soil Hg emissions 2010-2020 Eric Roy (MIT)
Ari Feinberg (IQF-CSIC) 		Hg simulation
Air-sea exchange parameterization Eric Roy (MIT) Hg simulation
Soil Hg emissions parameterization Ari Feinberg (IQF-CSIC) Hg simulation
Sea salt uptake of GOM Eric Roy (MIT) Hg simulation
Photoreduction rate constant Eric Roy (MIT) Hg simulation
New observations (2010-2020) in standardized Hg benchmark for intercomparison Eric Roy (MIT)/Ari Feinberg (IQF-CSIC) Hg simulation
Hg simulation in GCHP Eric Roy (MIT) Hg simulation
OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB) Hannah Horowitz (UIUC) Hg simulation
Possibly updating Hg oxidation chemistry based on Utah field campaigns Jessica Haskins (Utah) Hg simulation
New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC) Input data
Extend IMI to CO2 (ICI) Hannah Nesser (JPL) Inversions
Global emission inventory of metals Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U) Metals simulation
Investigate and improve performance of aerosol chemistry Bob Yantosca (Harvard) Performance
PAH - update from version 11 Lexia Cicone (MIT) POPs simulation
Species database more accessible; doc updates; TOL discussion Jessica Haskins (Utah) Structural
Stretched-grid plotting in GCPy Killian Murphy (York) Tools
Model inter-comparison of transport (GEOS, GCHP, GCClassic) Lizzie Lundgren (Harvard), Emma Knowland (NASA) Transport
Comparing mass fluxes in GCHP vs. traditional lat/lon wind Yuanjian Zhang (WashU), Seb Eastham (ICL) Transport
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