GEOS-Chem model development priorities

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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.

List of priorities as of Oct 2011

This is list of planned GEOS-Chem model development items updated from the List of priorities identified at 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.

Awaiting release

Item Author(s) Status
APM aerosol microphysics Fangqun Yu (SUNY Albany) Added to v9-01-02
GFED3 biomass burning Prasad Kasibhatla (Duke) Added to v9-01-02
Aerosol deposition over snow/ice Jenny Fisher (Harvard) Added to v9-01-02
Seasonal variation of Asian NH3 emissions Jenny Fisher (Harvard) Added to v9-01-02
Cleanup of AOD diagnostics Sungshik Patrick Kim (Harvard) Added to v9-01-02
RETRO anthropogenic VOC emissions Dylan Millet (U. Minnesota) Added to v9-01-02
GEIA emissions scale factor fix Dylan Millet (U. Minnesota) Added to v9-01-02
Chemical updates for atmospheric Hg Bess Corbitt (Harvard)
Jenny Fisher (Harvard)
Added to v9-01-02
GEIA 2005 Hg emissions Bess Corbitt (Harvard) Posted in shared data directory; will be included in v9-01-02
Documentation of chemical mechanism Jingqiu Mao (NOAA/GFDL) Now available. Please see this wiki page.

--Melissa Payer 15:17, 6 October 2011 (EDT)

Ready to go in

Item Author(s) Status
Nested-grid Hg simulation Lyatt Jaeglé (U. Washington) Code is ready
Nested-grid CO2 simulation Yuxuan Wang (Tsinghua U.) Code delivered to 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
Expanded SOA Havala Pye (EPA/ORD) Code delivered to GCST; awaiting implementation
Dust submicron size distribution for optics David Ridley (Colo. State) Code delivered to GCST, awaiting implementation
Improved sea salt emission & deposition Lyatt Jaeglé (U. Washington) Code delivered to GCST, awaiting implementation
Improved snow scavenging and washout parameterization Qiaoqiao Wang (Harvard) Code delivered to GCST, awaiting implementation
New soil NOx emission module Rynda Hudman (UC Berkeley) Code delivered to GCST, awaiting implementation
EPA/NEI2005 Hg emissions for US Lyatt Jaeglé (U. Washington) Code is ready
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
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
Acid uptake on dust aerosols T. Duncan Fairlie (NASA/LARC) Code delivered to GCST, awaiting implementation

--Melissa Payer 15:17, 6 October 2011 (EDT)

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)
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
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)

--Melissa Payer 15:17, 6 October 2011 (EDT)

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)

--Melissa Payer 15:17, 6 October 2011 (EDT)

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
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. 11:43, 20 October 2011 (EDT)