GEOS-Chem model development priorities
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On this page we list the current priorities for GEOS-Chem development. This list was compiled by the user Working Groups at the last International GEOS-Chem Meeting (IGC5) in May 2011 and has been continuously updated since based on code readiness and input from the Working Groups and the Steering Committee.
List of priorities as of Dec 2011
Items "Awaiting release" will be part of the next version release of GEOS-Chem and are actively being incorporated into the standard model and benchmarked. Other items are in different stages of readiness and will be included in future versions of the model.
Awaiting release
| Item | Author(s) | Status |
|---|---|---|
| Improved acetone simulation | Emily Fischer (Harvard) | Delivered to GCST, slated for 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 emission & deposition | Lyatt Jaeglé (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 snow scavenging and washout parameterization | Qiaoqiao Wang (Harvard) | Delivered to GCST, slated for v9-01-03 |
| PARANOX ship plume emissions | Geert Vinken (Eindhoven) | Delivered to GCST, slated for v9-01-03 |
| Expanded SOA | Havala Pye (EPA/ORD) | Delivered to GCST; slated for v9-01-03 |
| Stratospheric P and k (monthly climatological) | Lee Murray (Harvard) | Code is ready (awaiting delivery to GCST); slated for v9-01-03 |
| EPA/NEI2005 Hg emissions for US | Lyatt Jaeglé (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 Jaeglé (U. Washington) | Delivered to GCST; slated for v9-01-03 |
| Nested-grid CO2 simulation | Yuxuan Wang (Tsinghua U.) | Delivered to GCST; slated for v9-01-03 |
| Historical emission inventories of SO2, NOx, BC, and POA | Eric Leibensperger (MIT) | Delivered to GCST, slated for v9-01-03 |
--Bob Y. 11:59, 28 November 2011 (EST)
Ready to go in
| Item | Author(s) | Status |
|---|---|---|
| Inorganic chemistry updates | Mat Evans (Leeds) | Delivered to GCST; awaiting implementation |
| 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 |
| Acid uptake on dust aerosols | T. Duncan Fairlie (NASA/LARC) | Delivered to GCST, awaiting implementation |
| Replacing RETRO C2H6 emissons with emissions from the C2H6 offline simulation | Yaping Xiao (UNH) | Awaiting implementation |
--Melissa Payer 15:36, 23 November 2011 (EST)
Almost there (< 6 months)
| Item | Author(s) | Status |
|---|---|---|
| FAA/AEDT aircraft emissions inventory | Steven Barrett et al (MIT) | Code delivered to GCST, on hold |
| Longwave & shortwave RF codes for chemistry-climate | Fangqun Yu (SUNY Albany) | |
| APM capability for nested grid | Fangqun Yu (SUNY Albany) | |
| TOMAS capability for nested grid | Jeff Pierce (Dalhousie) | |
| Update to EDGAR 4 anthropogenic emissions | Qiang Zhang (Tsinghua) | |
| Interannual lightning | Lee Murray (Harvard) | |
| Primary marine OA emissions | Kateryna Lapina (CSU) | |
| Implement GISS advection scheme for GISS-driven applications | GEOS-Chem Support Team | |
| Tropospheric bromine chemistry | Justin Parrella (Harvard) | |
| Updated 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) | |
| Improvements to isoprene chemistry, standardization of Paulot Scheme | Fabien Paulot (Harvard) Eloise Marais (Harvard) Jingqiu Mao (NASA/GFDL) Mat Evans (Leeds) |
|
| RO2+NO3 chemistry updates | Mat Evans (Leeds) | |
| Inhibition of N2O5 hydrolysis by aerosol nitrate | Lin Zhang (Harvard) | |
| Improved HO2 uptake by aerosol | Jingqiu Mao (NASA/GFDL) | |
| Improved ROOH formation and chemistry | Fabien Paulot (Harvard) Mat Evans (Leeds) |
--Melissa Payer 10:45, 5 December 2011 (EST)
Over the horizon (6-12 months)
| Item | Author(s) | Status |
|---|---|---|
| Update HCN simulation | Qian Li (U. Edinburgh) Dylan Jones (U. Toronto) |
|
| Working with GEOS-5.7.2 | GEOS-Chem Support Team | Development is ongoing |
| Nested-grid model at 0.25° x 0.3125° 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 simulations | Dylan Jones (U. Toronto) | |
| Move to 2° x 2.5° versions of GISS GCM ModelE and Model3 | Loretta Mickley (Harvard) | For more information, please see the GISS Model E Memo by (Lee Murray and Loretta Mickley). |
| Implement IPCC AR5 scenarios | Loretta Mickley (Harvard) | |
| Improved dust simulation in nested-grid model | Rokjin Park (Seoul Nat'l Univ.) | |
| Isoprene chemistry | Mat Evans (Leeds) Jingqiu Mao (NOAA/GFDL) |
Paper is in progress |
| Unified emissions pre-processor | Qiang Zhang (Tsinghua) | |
| Update Asian emissions | Qiang Zhang (Tsinghua) | |
| Improve ocean CO2 flux | Ray Nassar (Environment Canada) Kevin Bowman (JPL) |
|
| CESM/CAM5 interface for chemistry-climate | Rokjin Park (Seoul Nat'l Univ.) Joshua Fu (U. Tennessee) |
|
| Standardize the two-film parameterization of air-sea exchange | Hg and POPs Working Group | |
| Model engineering - improving KPP diagnostics | Mat Evans (Leeds) Barron Henderson (UNC) Mike Long (Harvard) |
--Melissa Payer 11:02, 5 December 2011 (EST)
Longer term (> 12 months)
| Item | Author(s) | Status |
|---|---|---|
| Grid-independent GEOS-Chem | GEOS-Chem Support Team | Development is ongoing |
| Improved atmospheric-ocean-land coupling of Hg simulation | Hg and POPs Working Group | |
| Primary biological aerosol particles (PBAP's) | Colette Heald (Colo. State) | Only to be implemented if users identified |
| Unified radiative forcing module for GEOS-Chem | Aerosols Working Group | Under discussion/investigation |
| Effective meteorolgical fields for dust and sea-salt emissions | GEOS-Chem Support Team | |
| Dust simulation expansion; tagged simulation, oxalate, Fe, P | Matthew Johnson (NCSU) | |
| Benchmark for aerosol deposition | Colette Heald (Colo. State) | TBD |
| Read emission data at native resolution and regrid on the fly | GEOS-Chem Support Team | |
| Link column version of GEOS-Chem with GEOS-GCM for chemistry-climate | GEOS-Chem Support Team | |
| CO2 inhibition effect for isoprene emission | Loretta Mickley (Harvard) | |
| Replace CASA CO2 biosphere climatology with year-specific fluxes | Ray Nassar (Environment Canada) Dylan Jones (U. Toronto) |
TBD |
--Melissa Payer 15:17, 6 October 2011 (EDT)
Items no longer being worked on
| Item | Author(s) | Status |
|---|---|---|
| Fix of global OH diagnostic | Mat Evans (Leeds) Jingqiu Mao (NOAA/GFDL) |
This is no longer an issue after the CSPEC restart bug fix in v9-01-02 (awaiting release). |
| Updated diurnal variation of US NEI emissions | Rynda Hudman (UC Berkeley) |
--Melissa Payer 15:17, 6 October 2011 (EDT)
List of priorities identified at IGC5
This is a list of planned GEOS-Chem model development items, based on discussions and Working Group reports from the and 5th International GEOS-Chem Meeting (aka IGC5). The key model developer or model contact is identified for each item.
We count on user input to augment and prioritize this list, please contact your Working Group Chair or model scientist Daniel Jacob.
For immediate implementation (awaiting release)
| Item | Author(s) | Status |
|---|---|---|
| APM aerosol microphysics | Fangqun Yu (SUNY Albany) | Added to v9-01-02; awaiting release |
| GFED3 biomass burning | Prasad Kasibhatla (Duke) | Added to v9-01-02; awaiting release |
| FAA/AEDT aircraft emissions inventory | Steven Barrett et al (MIT) | |
| Aerosol deposition over snow/ice | Jenny Fisher (Harvard) | Added to v9-01-02; awaiting release |
| Seasonal variation of Asian NH3 emissions | Jenny Fisher (Harvard) | Added to v9-01-02; awaiting release |
| Cleanup of AOD diagnostics | Sungshik Patrick Kim (Harvard) | Added to v9-01-02; awaiting release |
| RETRO anthropogenic VOC emissions | Dylan Millet (U. Minnesota) | Added to v9-01-02; awaiting release |
--Bob Y. 15:56, 23 August 2011 (EDT)
Ready to go in
| Item | Author(s) | Status |
|---|---|---|
| Nested-grid Hg simulation | Lyatt Jaeglé (U. Washington) | |
| Nested-grid CO2 simulation | Yuxuan Wang (Tsinghua U.) | |
| Stratospheric P and k (monthly climatological) | Lee Murray (Harvard) | |
| Inorganic chemistry updates | Mat Evans (Leeds) | |
| GEIA 2005 Hg emissions | Bess Corbitt (Harvard) | Delivered to GCST |
| Expanded SOA | Havala Pye (EPA/ORD) | Delivered to GCST, undergoing final testing |
| Dust submicron size distribution for optics | David Ridley (Colo. State) | |
| GEIA emissions scale factor fix | Dylan Millet (U. Minnesota) | Added to v9-01-02; awaiting release |
| Longwave & shortwave RF codes for chemistry-climate | Fangqun Yu (SUNY Albany) | |
| Improved sea salt emission & deposition | Lyatt Jaeglé (U. Washington) | Code delivered to GCST, awaiting implementation |
| Improved snow scavenging and washout parameterization | Qiaoqiao Wang (Harvard) |
--Bob Y. 11:04, 30 August 2011 (EDT)
Almost there (< 6 months)
| Item | Author(s) | Status |
|---|---|---|
| New soil NOx emission module | Rynda Hudman (UC Berkeley) | Code delivered to GCST, awaiting implementation |
| APM capability for nested grid | Fangqun Yu (SUNY Albany) | |
| TOMAS capability for nested grid | Jeff Pierce (Dalhousie) | |
| Fix of global OH diagnostic | Mat Evans (Leeds) Jingqiu Mao (NOAA/GFDL) |
|
| Chemical updates for atmospheric Hg | Bess Corbitt (Harvard) Jenny Fisher (Harvard) |
|
| Streets future Hg emissions | Bess Corbitt (Harvard) | |
| EPA/NEI2005 Hg emissions for US | Lyatt Jaeglé (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 v9-01-03 |
| Update HCN simulation | Qian Li (U. Edinburgh) Dylan Jones (U. Toronto) |
|
| Implement GISS advection scheme for GISS-driven applications | GEOS-Chem Support Team |
--Bob Y. 11:10, 6 June 2011 (EDT)
Over the horizon (6-12 months)
| Item | Author(s) | Status |
|---|---|---|
| Working with GEOS-5.7.2 | GEOS-Chem Support Team | Ongoing |
| Nested-grid model at 0.25° x 0.3125° resolution | Yuxuan Wang (Tsinghua) | |
| High-resolution emissions for above nested-grid model | Yuxuan Wang (Tsinghua) | |
| Improved acetone simulation | Emily Fischer (Harvard) | Slated for inclusion in v9-01-03 |
| 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) | |
| Box model version of GEOS-Chem chemical mechanism | Jingqiu Mao (NOAA/GFDL) | |
| Improved operator splitting | Mauricio Santillana (Harvard) | |
| Updated dicarbonyl simulation | May Fu (Peking U.) | |
| 3-D VOC source for tagged CO simulations | Dylan Jones (U. Toronto) | |
| Replace CASA CO2 biosphere climatology with year-specific fluxes | Ray Nassar (Environment Canada) Dylan Jones (U. Toronto) |
|
| Satellite diagnostic for XCO2 | Liang Feng (U. Edinburgh) | |
| Move to 2° x 2.5° versions of GISS GCM ModelE and Model3 | Loretta Mickley (Harvard) | For more information, please see the GISS Model E Memo by (Lee Murray and Loretta Mickley). |
| Implement IPCC AR5 scenarios | Loretta Mickley (Harvard) | |
| CO2 inhibition effect for isoprene emission | Loretta Mickley (Harvard) |
--Bob Y. 11:25, 30 August 2011 (EDT)
Longer term (> 12 months)
| Item | Author(s) | 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) 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 | Aerosols Working Group | |
| 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.) Joshua Fu (U. Tennessee) |
|
| Link column version of GEOS-Chem with GEOS-GCM for chemistry-climate | GEOS-Chem Support Team |
--Bob Y. 11:33, 6 June 2011 (EDT)
Items that are now included in GEOS-Chem
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 5th International GEOS-Chem Meeting in 2011 (aka IGC5).
| Item | Author(s) | Completion Date |
|---|---|---|
| APM aerosol microphysics | Fangqun Yu (SUNY Albany) | 28 Nov 2011 (v9-01-02 release) |
| GFED3 biomass burning | Prasad Kasibhatla (Duke) | 28 Nov 2011 (v9-01-02 release) |
| Aerosol deposition over snow/ice | Jenny Fisher (Harvard) | 28 Nov 2011 (v9-01-02 release) |
| Seasonal variation of Asian NH3 emissions | Jenny Fisher (Harvard) | 28 Nov 2011 (v9-01-02 release) |
| Cleanup of AOD diagnostics | Sungshik Patrick Kim (Harvard) | 28 Nov 2011 (v9-01-02 release) |
| RETRO anthropogenic VOC emissions | Dylan Millet (U. Minnesota) | 28 Nov 2011 (v9-01-02 release) |
| GEIA emissions scale factor fix | Dylan Millet (U. Minnesota) | 28 Nov 2011 (v9-01-02 release) |
| Chemical updates for atmospheric Hg | Bess Corbitt (Harvard) Jenny Fisher (Harvard) |
28 Nov 2011 (v9-01-02 release) |
| GEIA 2005 Hg emissions | Bess Corbitt (Harvard) | 28 Nov 2011 (v9-01-02 release) |
| Documentation of chemical mechanism | Jingqiu Mao (NOAA/GFDL) | 30 Jun 2011 |
| FlexAOD postprocessor NOTE: This is a separate standalone software tool. |
Gabriele Curci (U. L'Aquila) | 26 May 2011 |
| DSMACC chemical box model NOTE: This is a separate standalone software tool. |
Mat Evans (York U.) Jingqiu Mao (Harvard) Eloise Marais (Harvard) |
Summer 2011 |
--Bob Y. 11:53, 28 November 2011 (EST)