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

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(→‎Over the horizon (6-12 months))
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|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
 
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
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|align="center"|'''[[GEOS-Chem 14.3.0]]'''
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|align="center"|'''[[GEOS-Chem 14.4.0]]'''
  
 
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|-valign="top"
 
|-valign="top"
−
|TOMAS in GCHP
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|Betty Croft (Dalhousie)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
|TOMAS
+
|Emissions
 
|Simple
 
|Simple
 
|
 
|
−
*[https://github.com/geoschem/GCHP/pull/221 GCHP PR #221]
 
−
*[https://github.com/geoschem/geos-chem/pull/1261 geos-chem PR #1261]
 
−
*[https://github.com/geoschem/HEMCO/pull/145 geoschem/HEMCO PR #145]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/1511 Bug fix for TOMAS sulfate production rates]
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
−
|Betty Croft (Dalhousie)
+
|Haihui Zhu (WashU)
−
|TOMAS
+
|Aerosols
−
|Simple
+
−
|
+
−
*[https://github.com/geoschem/geos-chem/pull/1569 geos-chem PR #1569]
+
−
 
+
−
|-valign="top"
+
−
|Update surface methane boundary condition using NOAA flask data
+
−
|Lee Murray (Rochester)
+
−
|Input data
+
−
|Simple
+
−
|
+
−
*[https://github.com/geoschem/geos-chem/issues/1626 geos-chem issue #1626]
+
−
 
+
−
|-valign="top"
+
−
|Include nitrate (NIT + NITs) in Ox family
+
−
|Melissa Sulprizio (Harvard)
+
−
|Chemistry<br>Diagnostics
+
−
|Simple
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|GCHP carbon simulation
+
−
|Bob Yantosca (Harvard)
+
−
|Carbon
+
 
|Medium
 
|Medium
 
|
 
|
−
*[https://github.com/geoschem/GCHP/issues/339 geos-chem Issue #339]
+
*[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"
 
|-valign="top"
−
|GEOS-IT meteorology
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|Lizzie Lundgren (Harvard)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
−
|New meteorology option
+
|Emissions
 
|Medium
 
|Medium
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/pull/1848 geos-chem PR #1848]
+
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
−
|Cloud-J for computing photolysis rates
+
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
 
|Lizzie Lundgren (Harvard)
 
|Lizzie Lundgren (Harvard)
−
|Photolysis
+
|GC-Classic
 
|Medium
 
|Medium
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/pull/1522 geos-chem PR #1848]
+
*[https://github.com/geoschem/HEMCO/issues/18 hemco issue #18]
−
*[https://github.com/geoschem/GCClassic/pull/27 gcclassic PR #27]
+
  
 
|-valign="top"
 
|-valign="top"
−
|Mass flux regridding fix in MAPL
+
|Capture all trop and PBL height changes in budget diagnostics
−
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
−
|GCHP input regridding
+
|Diagnostics
−
|Medium
+
−
|
+
−
*[https://github.com/GEOS-ESM/MAPL/pull/2056 GEOS-ESM/MAPL PR #2056]
+
−
 
+
−
|-valign="top"
+
−
|Improve pressure level computation for GCHP advection
+
−
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
+
−
|GCHP advection
+
−
|Medium
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|GCHP advection diagnostics
+
−
|Lizzie Lundgren (Harvard)
+
−
|GCHP diagnostics
+
 
|Medium
 
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
  
 
|}
 
|}
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!width="100px"|Delivery status
 
!width="100px"|Delivery status
 
!width="300px"|Notes and References
 
!width="300px"|Notes and References
−
 
−
|-valign="top"
 
−
|New version of CEDS at 0.1 deg
 
−
|Dandan Zhang (WashU)
 
−
|Emissions
 
−
|Simple
 
−
|Delivered<br>Apr 2023
 
−
|
 
−
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
 
−
 
−
|-valign="top
 
−
|Update volcano emissions through 2022
 
−
|Melissa Sulprizio (Harvard)
 
−
|Emissions
 
−
|Simple
 
−
|Delivered<br>Sep 2023
 
−
|
 
−
*https://gmao.gsfc.nasa.gov/gmaoftp/geoscf/volcano_so2/v202302/
 
−
 
−
|-valign="top"
 
−
|KORUS-AQ emissions for East Asia (as an option)
 
−
|Katie Travis (NASA)
 
−
|Emissions
 
−
|Simple
 
−
|Delivered<br>Apr 2023
 
−
|
 
−
 
−
|-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
 
−
|Delivered<br>Jul 2022
 
−
|
 
  
 
|-valign="top"
 
|-valign="top"
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|
 
|
 
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
 
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
−
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., submitted 2023.]
+
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
+
|Mass flux regridding fix in MAPL
−
|Haihui Zhu (WashU)
+
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
−
|Aerosols
+
|GCHP input regridding
−
|Simple
+
|Medium
−
|Delivered<br>Aug 2023
+
 
|
 
|
−
*[https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1292/ Zhu et al., EGUsphere, submitted 2023.]
 
−
*[https://github.com/geoschem/geos-chem/pull/1902 geos-chem PR #1902]
 
−
 
−
|-valign="top"
 
−
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
 
−
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
 
−
|Emissions
 
−
|TBD
 
−
|Not delivered
 
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
+
*[https://github.com/geoschem/GCHP/issues/377 GCHP Issue #377]
−
 
+
*'''Currently on hold, as the submitted update results in zero diff'''
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/1928 Updated 0.1x0.1 timezone file accounting for daylight savings]
+
|New version of CEDS at 0.1 deg
−
|Karn Vohra (UCL)
+
|Dandan Zhang (WashU)
 
|Emissions
 
|Emissions
 
|Simple
 
|Simple
−
|Not delivered
+
|Delivered
 
|
 
|
−
 
+
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
−
|-valign="top"
+
*'''Currently on hold while an issue with seasonality in the new CEDS data is being investigated by the authors.'''
−
|Bug fix for dry deposition to snow and ice
+
−
|Ryan Pound (York)
+
−
|Dry deposition
+
−
|Simple
+
−
|Delivered (Nov 2023)
+
−
|
+
−
*[https://github.com/geoschem/geos-chem/pull/2045 geos-chem PR #2045]
+
−
 
+
  
 
|}
 
|}
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!width="100px"|Delivery status
 
!width="100px"|Delivery status
 
!width="300px"|Notes and References
 
!width="300px"|Notes and References
 +
 +
|-valign="top"
 +
|KORUS-AQ emissions for East Asia (as an option)
 +
|Katie Travis (NASA)
 +
|Emissions
 +
|Simple
 +
|
  
 
|-valign="top"
 
|-valign="top"
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|
 
|
 
*Data involves many files- need to think about temporal frequency
 
*Data involves many files- need to think about temporal frequency
−
 
−
|-valign="top"
 
−
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
 
−
|Shixian Zhai (Harvard)
 
−
|Emissions
 
−
|Delivered
 
−
|
 
−
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
 
  
 
|-valign="top"
 
|-valign="top"
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*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
 
*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
 
*Implemented in v12.5, needs to be brought up to current version
 
*Implemented in v12.5, needs to be brought up to current version
−
 
−
|-valign="top"
 
−
|[https://github.com/geoschem/geos-chem/pull/1983 Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition]
 
−
|Yanshun Li (WashU)
 
−
|Aerosols
 
−
|Delivered<br>Oct 2023
 
−
|
 
−
*[https://acp.copernicus.org/articles/23/12525/2023/acp-23-12525-2023.html Li et al., ACP, 2023.]
 
−
*[https://github.com/geoschem/geos-chem/pull/1983 geos-chem PR #1983]
 
  
 
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!width="100px"|Model scope
 
!width="100px"|Model scope
 
!width="420px"|Notes and References
 
!width="420px"|Notes and References
−
 
−
|-valign="top"
 
−
|Replace ISORROPIA with [https://gmd.copernicus.org/preprints/gmd-2023-159/gmd-2023-159.pdf HTEPv1.0]
 
−
|Seb Eastham (MIT)<br>Lizzie Lundgren (Harvard)
 
−
|Aerosol thermodynamics
 
−
|
 
−
*Will be git submodule
 
  
 
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|Michael Vermeuel (UMN)
 
|Michael Vermeuel (UMN)
 
|Chemistry
 
|Chemistry
−
|
 
−
 
−
|-valign="top"
 
−
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
 
−
|Seb Eastham (MIT)
 
−
|Science
 
 
|
 
|
  
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|
 
|
 
*Ongoing (will be done as time allows)
 
*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]
 
  
 
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|Model performance
 
|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.
+
*NOTE: Most memory leaks in GCHP have been fixed by [https://github.com/geoschem/geos-chem/pull/1353 geoschem/geos-chem PR #1353]. Will wait until MAPL3 to further assess.
  
 
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|-valign="top"
−
|Improve run directory templating and creation with init_rd.sh and shared directories
+
|Improve pressure handling in GCHP advection
−
|Jourdan He (WashU)
+
|Seb Eastham (MIT)<br>Yuanjian Zhang (WashU)
−
|Run directories
+
|GCHP
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
+
|Use ExtData2G as default GCHP input module
−
|GCST?
+
|Lizzie Lundgren (Harvard)
−
|Documentation
+
|GCHP
−
|
+
|Will replace ExtData.rc with yaml file
  
 
|}
 
|}
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|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
 
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
 
|Transport
 
|Transport
 +
|
 +
 +
|-valign="top"
 +
|MAPL version 3
 +
|Lizzie Lundgren (Harvard)
 +
|GCHP
 +
|Will include History wildcard handling in GCHP
 +
 +
 +
|-valign="top"
 +
|Migrate benchmark meteorology from MERRA2 to GEOS-IT
 +
|GCST
 +
|Benchmarking
 
|
 
|
  

Revision as of 16:59, 30 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
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)
Assess memory leak in GCHP Killian Murphy (York) Model performance
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York) 		Model performance
Improve pressure handling in GCHP advection Seb Eastham (MIT)
Yuanjian Zhang (WashU) 		GCHP
Use ExtData2G as default GCHP input module Lizzie Lundgren (Harvard) GCHP Will replace ExtData.rc with yaml file

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
MAPL version 3 Lizzie Lundgren (Harvard) GCHP Will include History wildcard handling in GCHP


Migrate benchmark meteorology from MERRA2 to GEOS-IT GCST Benchmarking

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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