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

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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
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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''']].
−
 
+
−
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.
+
  
 
== Merged and awaiting release ==
 
== Merged and awaiting release ==
 +
 +
See the links below for items merged and awaiting release.
 +
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="300px"|Mergeable at any time
 +
!width="200px"|Version in development
 +
 +
|-valign="top"
 +
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
 +
|align="center"|'''[[GEOS-Chem 14.5.0]]'''
 +
 +
|}
 +
 +
== Feature integration in progress ==
 +
 +
Features listed in this table are actively being integrated into GEOS-Chem by the [https://geoschem.github.io/support-team.html GEOS-Chem Support Team]. In addition, we continuously implement structural updates in the model to maintain and develop coupling with other models including GEOS, CESM, and the model adjoint.
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
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!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
−
!width="300px"|Notes
+
!width="100px"|Ease of implementation
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|TBD
+
|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"
 +
|Ongoing carbon simulation fixes in GCClassic and GCHP
 +
|GCST
 +
|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]
  
 
|}
 
|}
  
−
== Feature integration in progress ==
+
== Prioritized and in the queue ==
 +
 
 +
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  
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!width="100px"|Model scope
 
!width="100px"|Model scope
 
!width="100px"|Ease of implementation
 
!width="100px"|Ease of implementation
−
!width="200px"|Notes
+
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/547 Update US emissions to NEI2016]
+
|Retire CH4, CO2, tagCO simulations in favor of carbon simulation
−
|Barron Henderson (EPA)<br>Lyssa Freese (MIT)
+
|Melissa Sulprizio (Harvard)
−
|Emissions
+
|Carbon gases
 +
|Simple
 
|
 
|
 
|
 
|
−
*Files available at [ftp://newftp.epa.gov/Air/aqmg/global/NEI2016fh/ this ftp site]. Barron writes, "They have not yet been used in a publication, so I caution users to look for anything and report back."
+
*[https://github.com/geoschem/geos-chem/issues/2387 geos-chem issue #2387]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://data.pnnl.gov/dataset/CEDS-4-21-21 CEDS v2 emissions through 2019]
+
|Derive convective precipitation flux if using FP/IT generated with Grell-Freitas
−
|Patrick Campbell (NOAA-ARL)
+
|Yuanjian Zhang (WashU)<br>Viral Shah (GMAO)
−
|Emissions
+
|Convection
 +
|Simple
 
|
 
|
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/2469 geos-chem Issue #2469]
  
 
|-valign="top"
 
|-valign="top"
−
|[http://globalchange.bnu.edu.cn/research/laiv6 Updated Yuan/BNU MODIS LAI product (2000-2019)]
+
|Correct the issue that injection height has been artifically decreased by HEMCO
−
|Jenny Fisher (U. Wollongong)
+
|Lixu Jun (Montana)
−
|Emissions<br>Dry deposition
+
|Emissions
 +
|Simple
 +
|Delivered 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
 
|
 
|
−
*Processing scripts delivered to GCST (Aug 2020)
+
*[https://github.com/geoschem/geos-chem/pull/2525 geos-chem PR #2525]
  
 
|}
 
|}
  
−
== Feature integration in the queue ==
+
== 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  
 
{| border=1 cellspacing=0 cellpadding=5  
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!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
−
!width="100px"|Ease of implementation
+
!width="100px"|Delivery status
−
!width="200px"|Notes
+
!width="300px"|Notes and Refereneces
 +
 
  
 
|-valign="top"
 
|-valign="top"
−
!colspan="5" bgcolor="#CCFFFF"|Updates that will affect full-chemistry simulations
+
|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"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
+
|Update UCX to include gravitational settling of aerosol species beyond just BCPI
−
|Sam Silva (MIT)
+
|Conor Barker (UCL)<br>Eloise Marais (UCL)
−
|Science
+
|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"
 
|-valign="top"
−
|[https://gmd.copernicus.org/preprints/gmd-2020-380/ Dust emissions from Meng et al. (in review)]
+
|Global organic N dep from various emissions; nitrate aromatics updates
−
|Jun Meng (WUStL)
+
|May Fu (SUSTech)
−
|Emissions
+
|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"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2879/2020/ Improved wet scavenging from Luo et al. (2020)] (as option)
+
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
−
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
+
|Joey Lam  (CUHK)<br>Amos Tai (CUHK)
−
|Wet deposition
+
|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
 
|
 
|
−
*Delivered to GCST (Nov 2020)
+
*[https://github.com/geoschem/geos-chem/issues/2388 geos-chem issue #2388]
−
*See [https://github.com/geoschem/geos-chem/pull/522 geoschem/geos-chem PR #522]
+
−
*These updates will replace the Luo et al. (2019) option
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/21/1861/2021/ Updated Rn-222 emissions]
+
|China agriculture NH3 emissions
−
|Bo Zhang
+
|Amos Tai (CUHK)
 
|Emissions
 
|Emissions
 +
|Not delivered
 
|
 
|
 +
 +
|-valign="top"
 +
|T-dependent anthropogenic VOCs
 +
|May Fu (SUSTech)
 +
|Emissions
 +
|Not delivered
 
|
 
|
−
*The existing Rn emissions will remain as an option
+
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.  
−
*Data are available at https://doi.org/10.5281/zenodo.3942287
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions|Updated offline emissions]]
+
|New source functions for transport tracers beryllium-7 and beryllium-10
−
|Yanshun Li (WUStL)<br>Hongjian Weng (PKU)
+
|Minjie Zheng (ETH)
 
|Emissions
 
|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"
 
|-valign="top"
−
|Provide recommended rather than hard-coded scaling factors for online emissions
+
|Australian Hg emissions (2000-2019)
−
|GCST
+
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
 
|Emissions
 
|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)]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for lightning NOx, volcano, and open fire emissions]
+
|Hg biomass burning - FINN2.5 & GFED4
−
|GCST
+
|Eric Roy (MIT)
 
|Emissions
 
|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)]
 +
 +
|-valign="top"
 +
|BCC-GC online
 +
|Lin Zhang (PKU)
 +
|External Model
 +
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.sciencedirect.com/science/article/abs/pii/S1352231019305138?via%3Dihub Trace metal simulation]
+
|GC-YIBS with online fire emissions
−
|Junwei Xu (Dalhousie)
+
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
−
|Specialty simulation
+
|External Model
 +
|Not delivered
 
|
 
|
 +
 +
|-valign="top"
 +
|GISS-GC offline (GCAP)
 +
|Lee Murray (Rochester)
 +
|GCAP
 +
|Not delivered
 +
|
 +
 +
|-valign="top"
 +
|Archived TCR-2 OH fields for carbon simulations
 +
|Kazu Miyazaki (JPL)
 +
|Input data
 +
|Not delivered
 +
|
 +
*This will be the default OH, but users will have the option of selecting other OH fields
 +
 +
|}
 +
 +
== 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.
 +
 +
{|border=1 cellspacing=0 cellpadding=5
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes and References
 +
 +
|-valign="top"
 +
|Fixes to stratospheric aerosol settling
 +
|Connor Barker (UCL)<br>Eloise Marais (UCL)
 +
|Aerosols
 +
|
 +
 +
|-valign="top"
 +
|Dust non-sphericity impacts on optical properties
 +
|Inderjeet Singh (WashU)
 +
|Aerosols
 
|
 
|
−
*Delivered to GCST (Nov 2020)
 
−
*See [https://github.com/geoschem/geos-chem/pull/511 geoschem/geos-chem PR #511]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/560 C2H4 and C2H2 chemistry]
+
|DMS chemistry in v14
−
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
+
|Linia Tashmim (UCR)<br>Will Porter (UCR)
 
|Chemistry
 
|Chemistry
 
|
 
|
 +
 +
|-valign="top"
 +
|KPP standalone + 3D Interface
 +
|Obin Sturm (USC)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/publications/2020/moch_2020_hms_global.pdf HMS chemistry]
+
|NO2+OH+H2O kinetics
−
|Jonathan Moch (Harvard)
+
|Mat Evans (York)
 
|Chemistry
 
|Chemistry
 
|
 
|
 +
 +
|-valign="top"
 +
|LSODES solver in KPP for faster kinetics
 +
|Haipeng Lin (Harvard)
 +
|Chemistry
 
|
 
|
−
*Delivered to GCST (Sep 2020)
 
−
*See [https://github.com/geoschem/geos-chem/pull/456 geoschem/geos-chem PR #456]
 
  
−
|-
+
|-valign="top"
−
|[https://acp.copernicus.org/articles/17/3699/2017/ Blowing snow emissions of sea salt and sea salt bromide]
+
|Load balancing in chemistry solver (GCHP)
−
|Lyatt Jaegle (UW)
+
|Zhouran Sun (WashU)
−
|Emissions
+
|Chemistry +<br>Performance
 
|
 
|
 +
 +
|-valign="top"
 +
|Active chemistry in mesosphere for both GCHP and GCClassic
 +
|Helena McDonald (MIT)<br>Sebastian Eastham (ICL)
 +
|Chemistry
 
|
 
|
−
*Delivered to GCST (Jun 2020)
 
−
*See [https://github.com/geoschem/geos-chem/pull/356 geoschem/geos-chem PR #356]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.pnas.org/content/117/42/26076 Updated aerosol dry deposition]
+
|Updated aromatic oxidation
−
|Jeff Pierce (CSU)
+
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
−
|Dry deposition
+
|Chemistry
 
|
 
|
 +
 +
|-valign="top"
 +
|MCO3 uptake by cloud forming MP; leading to lower PAN
 +
|Laura Yang (Harvard)
 +
|Chemistry
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/604 geoschem/geos-chem #604]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
+
|Implement isotope simulation for CH4 in the carbon simulation
−
|Lu Shen (Harvard)
+
|Lee Murray (Rochester)
 
|Chemistry
 
|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"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
+
|Column diagnostics
−
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
+
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
−
|Specialty simulation
+
|Diagnostics
 
|
 
|
 +
 +
|-valign="top"
 +
|TOMAS rate diagnostics -- improve performance
 +
|Betty Croft (WashU/Dal)
 +
|Diagnostics +<br>Performance
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
 
  
−
|-
+
|-valign="top"
−
!colspan="5" bgcolor="#CCFFFF"|Features only affecting GCHP:
+
|Archive gamma values from heterogeneous chemistry
 +
|Bob Yantosca (Harvard)
 +
|Diagnostics
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
+
|RRTMG Documentation
−
|Sebastian Eastham (MIT)
+
|GCST
−
|Transport
+
|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"
 
|-valign="top"
−
|Add capability to read mass fluxes for use in advection
+
|Dry deposition diagnostics by land cover
−
|Sebastian Eastham (MIT)
+
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
−
|Input data, Transport
+
|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
 
|
 
|
  
 
|}
 
|}
  
−
== Feature integration not yet prioritized ==
+
== 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.
  
−
{| border=1 cellspacing=0 cellpadding=5  
+
{| border=1 cellspacing=0 cellpadding=5
−
|-bgcolor="#CCCCCC"
+
|- bgcolor="#cccccc"
 
!width="200px"|Feature
 
!width="200px"|Feature
 
!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
−
!width="100px"|Ease of implementation
+
!width="420px"|Notes and References
−
!width="200px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
+
|ML algorithms for bulk aerosol
−
|Chris Holmes (FSU)
+
|Arshad Nair (Albany)<br>Fangqun Yu (Albany)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Heterogeneous sulfate chemistry
 +
|Katie Travis (NASA)
 
|Chemistry
 
|Chemistry
 
|
 
|
 +
 +
|-valign="top"
 +
|H2 as an active species
 +
|Seb Eastham (ICL)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
+
|HCN, acetonitrile as fire tracers
−
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
+
|Kevin Bates (CU Boulder)
 
|Chemistry
 
|Chemistry
 
|
 
|
 +
 +
|-valign="top"
 +
|Implement ethane in carbon simulation
 +
|Yuzhong Zhang (Westlake)
 +
|Chemistry
 
|
 
|
−
*Delivered to GCST (Jun 2020)
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
+
|Mesospheric source of CO
−
|Sam Silva (MIT)
+
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
 
|Emissions
 
|Emissions
 
|
 
|
 +
 +
|-valign="top"
 +
|Drought-stress algorithm
 +
|Wei Li (Houston)
 +
|Emissions
 
|
 
|
−
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://acp.copernicus.org/articles/17/3699/2017/ GC-YIBs biosphere-atmospheric chemistry coupled model]
+
|Physically-based resolution correction for BVOC emissions using MEGAN
−
|Xu Yue (NUIST)
+
|May Fu (SUSTech)
−
|Science
+
|Emissions
 
|
 
|
 +
 +
|-valign="top"
 +
|Canadian forest fire prediction system (Canada government forecast model)
 +
|Robin Stevens (Montreal)
 +
|Emissions
 
|
 
|
−
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/presentations/IGC9/posters/Tue_Posters_lam_joey.pdf Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
+
|Cooking emissions (not biofuel)
−
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
+
|Kelvin Bates (CU Boulder)
−
|Science
+
|Emissions
 
|
 
|
−
|
 
−
*Delivered to GCST (Feb 2021)
 
−
*See [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
+
|State-specific annual emissions scaling factors (US) (1990-2021)
−
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
+
|Ishir Dutta (MIT)
−
|Chemistry
+
|Emissions
−
|
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archived CMIP6 Met Products for GEOS-Chem Input
+
|GISS-GC online
 
|Lee Murray (Rochester)
 
|Lee Murray (Rochester)
−
|Input data
+
|External model
 
|
 
|
 +
 +
|-valign="top"
 +
|Hybrid MPI-OpenMP in GCHP
 +
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>Lizzie Lundgren (Harvard)
 +
|GCHP
 
|
 
|
−
*See updates from [http://acmg.seas.harvard.edu/geos/word_pdf_docs/steering_cmte/gc_sc_minutes_24Feb2021.pdf Feb 2021 GCSC meeting]
 
−
*Official announcement coming soon
 
  
 
|-valign="top"
 
|-valign="top"
−
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry]
+
|MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files
−
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)
+
|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
 
|Chemistry
 
|
 
|
 +
 +
|-valign="top"
 +
|DMS updates
 +
|Will Porter (UCR)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Landcover/Fire Emissions Offline LPJlmfire
+
|Furans emission and chemistry
−
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
+
|Lixu Jin (Montana)<br>Lu Hu (Montana)
 +
|Chemistry + <br>Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Cl2 prodcution from Fe aerosol
 +
|Qianjie Chen (HK Poly)<br>Becky Alexander (UW)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|VCP emissions
 +
|Kevin Bates (CU Boulder)
 
|Emissions
 
|Emissions
 
|
 
|
 +
 +
|-valign="top"
 +
|Bidirectional land-atmosphere exchange for Hg
 +
|Yuying Cui (MIT/Tsinghua)
 +
|Hg simulation
 
|
 
|
  
−
|}
+
|-valign="top"
 +
|OH covariances for inversions
 +
|Elise Penn (Harvard)
 +
|Inversions
 +
|
  
−
== Almost there (< 6 months) ==
+
|-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="200px"|Feature
+
|Betty Croft (Dalhousie)
−
!width="200px"|Contributor(s)
+
|Microphysics
−
!width="100px"|Model scope
+
|
−
!width="300px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
−
|Diagnostic to archive XCO2, XCO, and XCH4
+
|TOMAS nucleation updates
−
|Dylan Jones (Toronto)
+
|Sam O'Donnell (CSU)
−
|Diagnostic
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
+
|Stratospheric aerosol APM
−
|Kazu Miyazaki (JPL)
+
|Fangqun Yu (SUNY Albany)
−
|Input data
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Aromatic VOC chemistry
+
|Transition from MERRA-2 to GEOS-IT for benchmarking
−
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
+
|Yuanjian Zhang (WashU)
−
|Chemistry
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|BrC aging
+
|Automate integration testing on AWS
−
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
+
|Yidan Tang (WashU)
−
|Chemistry
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Shared Socioeconomic Pathways Emission Inventories
+
|Integration testing: Add across end of year run
−
|Hong Liao (NUIST)
+
|GCST
−
|Emissions
+
|Quality Assurance
 
|
 
|
  
 +
|-valign="top"
 +
|Integration testing: Add GEOS-IT
 +
|Yuanjian Zhang (WashU)
 +
|Quality Assurance
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|Rediagnosis of RAS convection in GEOS-Chem
+
|Separate mixing, emissions, and drydep
−
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
+
|Yuanjian Zhang (WashU)
−
|Convection
+
|Structural
 
|
 
|
−
*Work is finished and a manuscript is in preparation.
 
  
 
|-valign="top"
 
|-valign="top"
−
|Read-in of native GEOS output in GCHP
+
|Intel IFX compiler
−
|WUStL GCST
+
|Bob Yantosca (Harvard)
−
|Input data
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Modularization of GEOS-Chem: FAST-JX as proof-of-concept
+
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
−
|Lizzie Lundgren (GCST)
+
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
 
|Structural
 
|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
 
|
 
|
  
 
|}
 
|}
  
−
== Over the horizon (6-12 months) ==
+
== 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.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
Line 349: Line 785:
 
!width="200px"|Contributor(s)
 
!width="200px"|Contributor(s)
 
!width="100px"|Model scope
 
!width="100px"|Model scope
−
!width="300px"|Notes
+
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Methylethylketone chemistry
+
|Modal aerosol model (MAM7) in GCHP
−
|Jared Brewer (CSU)
+
|Shreya Sharma (MIT)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Online OCIM ocean biogeochemistry
 +
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Add sulfate dependence to SOA yield from isoprene in simple SOA
+
|Perchlorate chemistry
−
|Eloise Marais (Leicester)
+
|Yuk Chun Chan (UW)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|GTMM updates
+
|Non-stomatal dry deposition (2-layer canopy model)
−
|Ben Geyman (Harvard)
+
|Michael Vermeuel (Purdue)
−
|Hg simulation
+
|Dry Deposition
 
|
 
|
  
 +
|-valign="top"
 +
|Continental chloride particle emissions (salty dust, road salt)
 +
|Jessica Haskins (Utah)
 +
|Emissions
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
+
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
−
|Christoph Keller (NASA GMAO)
+
|Ruochong (Tshingua)
−
|Transport Tracer simulation
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Streamlining of specialty simulations through HEMCO and KPP
+
|Lightning NOx production rates
−
|GCST
+
|Bex Horner (UCL)
−
|Chemistry, Specialty simulations
+
|Emissions
 
|
 
|
  
−
|}
+
|-valign="top"
 +
|HFO and CF3CHO
 +
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
 +
|Chemistry
 +
|
  
−
=== Longer term (12-24 months)===
+
|-valign="top"
 +
|Glyoxal updates from isoprene
 +
|Tzung-May Fu (SUSTech)
 +
|Chemistry
 +
|
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|- bgcolor="#cccccc"
+
|Iodine chemistry
−
!width="200px"|Feature
+
|Becky Alexander (UW)<br>Xuan Wang (CUHK)
−
!width="200px"|Contributor(s)
+
|Chemistry
−
!width="100px"|Model scope
+
|
−
!width="300px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
−
|GCHP Adjoint
+
|GFED5 biomass burning
−
|Daven Henze (CU Boulder)
+
|Eric Roy (MIT)
−
|Structural
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Implement isotope simulation for CO and CH4 in GCHP
+
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
−
|Lee Murray (Rochester)
+
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
−
|Specialty simulation
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Migrate LETFK DA scheme to GCHP
+
|Soil Hg emissions 2010-2020
−
|Kazu Miyazaki (JPL)
+
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
−
|Structural
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Super fast chemistry scheme
+
|Air-sea exchange parameterization
−
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
+
|Eric Roy (MIT)
−
|Chemistry
+
|Hg simulation
 
|
 
|
−
*SF mechanism has been implemented and benchmarked in GEOS-Chem 12.0.0. This mechanism is of interest for those groups wanting fast global simulation of oxidation fields in GEOS-Chem simulations focused on aerosol microphysics.
 
−
*The machine-learned chemical solver is still probably 12 months away from online implementation into GEOS-Chem.
 
  
 
|-valign="top"
 
|-valign="top"
−
|Add non-volatile cations to ISORROPIA
+
|Soil Hg emissions parameterization
−
|Becky Alexander (UW)
+
|Ari Feinberg (IQF-CSIC)
−
|Aerosols
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|DMS oxidation scheme updating
+
|Sea salt uptake of GOM
−
|Becky Alexander (UW)<br>Qianjie Chen (UW)
+
|Eric Roy (MIT)
−
|Chemistry
+
|Hg simulation
 
|
 
|
−
*Delayed - implemented pre-KPP
 
−
*Currently bring implemented in KPP by UC Riverside group
 
  
 
|-valign="top"
 
|-valign="top"
−
|Heterogeneous sulfate production
+
|Photoreduction rate constant
−
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Eric Roy (MIT)
−
|Chemistry
+
|Hg simulation
 
|
 
|
−
*Delayed - implemented pre-KPP
 
  
 
|-valign="top"
 
|-valign="top"
−
|Hg in WRF-GC
+
|New observations (2010-2020) in standardized Hg benchmark for intercomparison
−
|Yanxu Zhang (Nanjing)
+
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
 
|Hg simulation
 
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg with blowing snow
+
|Hg simulation in GCHP
−
|Yanxu Xhang (Nanjing)
+
|Eric Roy (MIT)
−
|Emissions, Hg simulation
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg isotopes
+
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
−
|Xiaotian Xu, Yanxu Xhang (Nanjing)
+
|Hannah Horowitz (UIUC)
 
|Hg simulation
 
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Hg in CESM CAM-CHEM
+
|Possibly updating Hg oxidation chemistry based on Utah field campaigns
−
|Peng Zhang, Yanxu Xhang (Nanjing)
+
|Jessica Haskins (Utah)
 
|Hg simulation
 
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Complex / multicomplex variables
+
|New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online
−
|Shannon Capps (Drexel)
+
|Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC)
 +
|Input data
 +
|
 +
 
 +
|-valign="top"
 +
|Extend IMI to CO2 (ICI)
 +
|Hannah Nesser (JPL)
 +
|Inversions
 +
|
 +
 
 +
|-valign="top"
 +
|Global emission inventory of metals
 +
|Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U)
 +
|Metals simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Investigate and improve performance of aerosol chemistry
 +
|Bob Yantosca (Harvard)
 +
|Performance
 +
|
 +
 
 +
|-valign="top"
 +
|PAH - update from version 11
 +
|Lexia Cicone (MIT)
 +
|POPs simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Species database more accessible; doc updates; TOL discussion
 +
|Jessica Haskins (Utah)
 
|Structural
 
|Structural
 
|
 
|
  
−
|}
+
|-valign="top"
 +
|Stretched-grid plotting in GCPy
 +
|Killian Murphy (York)
 +
|Tools
 +
|
  
−
----------------
+
|-valign="top"
 +
|Model inter-comparison of transport (GEOS, GCHP, GCClassic)
 +
|Lizzie Lundgren (Harvard), Emma Knowland (NASA)
 +
|Transport
 +
|
  
−
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
+
|-valign="top"
 +
|Comparing mass fluxes in GCHP vs. traditional lat/lon wind
 +
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
 +
|Transport
 +
|
 +
 
 +
|}

Latest revision as of 16:18, 17 October 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 14.5.0

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)
Ongoing carbon simulation fixes in GCClassic and GCHP GCST 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

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
Derive convective precipitation flux if using FP/IT generated with Grell-Freitas Yuanjian Zhang (WashU)
Viral Shah (GMAO) 		Convection Simple
Correct the issue that injection height has been artifically 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

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
Archived TCR-2 OH fields for carbon simulations Kazu Miyazaki (JPL) Input data Not delivered
  • This will be the default OH, but users will have the option of selecting other OH fields

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
Dust non-sphericity impacts on optical properties Inderjeet Singh (WashU) 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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