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

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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 [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''']].
  
 
== Merged and awaiting release ==
 
== Merged and awaiting release ==
Line 29: Line 29:
  
 
|-valign="top"
 
|-valign="top"
−
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
+
|New version of CEDS at 0.1 deg
−
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
+
|Dandan Zhang (WashU)
 
|Emissions
 
|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
 
|Medium
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
+
*[https://github.com/geoschem/GCHP/issues/440 GCHP issue #440]
−
*Incorporates new met field TSOIL1
+
*[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"
 
|-valign="top"
−
|Mass flux regridding fix in MAPL
+
|Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver
−
|Tom Clune (GMAO)
+
|Bob Yantosca (Harvard)
−
|GCHP
+
|Chemistry
 
|Medium
 
|Medium
 
|
 
|
−
*[https://github.com/geoschem/MAPL/pull/36 MAPL PR #36]
+
*[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"
 
|-valign="top"
−
|Cloud-J 7.7.2 for greater flexibility in external models
+
|Fix obspack - not working in 14.4.0
−
|Lizzie Lundgren (Harvard)
+
|Bob Yantosca (Harvard)
−
|Photolysis
+
|Diagnostics
 
|Medium
 
|Medium
 
|
 
|
−
*[https://github.com/geoschem/Cloud-J/pull/17 Cloud-J PR #17]
+
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]
−
*[https://github.com/geoschem/geos-chem/pull/2342 GEOS-Chem PR #2342]
+
  
 
|-valign="top"
 
|-valign="top"
−
|GCHP run directory improvements for mass flux, stretched grid, and GEOS-IT runs
+
|Make GC-Classic bit-for-bit reproducible upon restart<br>(part 1 of 2)
 
|Lizzie Lundgren (Harvard)
 
|Lizzie Lundgren (Harvard)
−
|GCHP
+
|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]
 +
 
 +
|-valign="top"
 +
|Derive convective precipitation flux if using FP/IT generated with Grell-Freitas
 +
|Yuanjian Zhang (WashU)<br>Viral Shah (GMAO)<br>Lizzie Lundgren (Harvard)
 +
|Convection
 
|Medium
 
|Medium
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/pull/2326 GEOS-Chem PR #2326]
+
*[https://github.com/geoschem/geos-chem/issues/2469 geos-chem Issue #2469]
 +
*[https://github.com/geoschem/geos-chem/pull/2523 geos-chem PR #2523]
  
 
|}
 
|}
Line 78: Line 113:
  
 
|-valign="top"
 
|-valign="top"
−
|ALK4 & R4N2 chemistry
+
|Retire CH4, CO2, tagCO simulations in favor of carbon simulation
−
|Jared Brewer (UMN)
+
|Melissa Sulprizio (Harvard)
−
|Chemistry
+
|Carbon gases
−
|TBD
+
|Simple
−
|Delivered
+
|
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
+
*[https://github.com/geoschem/geos-chem/issues/2387 geos-chem issue #2387]
−
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]
+
  
 
|-valign="top"
 
|-valign="top"
−
|New version of CEDS at 0.1 deg
+
|Correct the issue that injection height has been artificially decreased by HEMCO
−
|Dandan Zhang (WashU)
+
|Lixu Jun (Montana)
 
|Emissions
 
|Emissions
 
|Simple
 
|Simple
−
|Delivered June 2024
+
|Delivered<br>June 2024
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
+
*[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"
 
|-valign="top"
−
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
+
|Capability to run GCClassic at 0.125x0.15625 resolution
−
|Lizzie Lundgren (Harvard)
+
|Melissa Sulprizio (Harvard)<br>Xiaolin Wang (Harvard)
−
|GC-Classic
+
|Nested grid
−
|Medium
+
|Simple
 +
|Delivered
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/1980 geos-chem PR #1980]
 +
*[https://github.com/geoschem/HEMCO/pull/290 HEMCO PR #290]
 +
 +
|-valign="top"
 +
|Strat-adjusted RF in GCC and GCHP
 +
|Connor Barker (UCL)<br>Eloise Marais (UCL)
 +
|Radiation
 +
|Simple
 +
|Delivered
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2525 geos-chem PR #2525]
 +
 +
|-valign="top"
 +
|Archived TCR-2 OH fields for carbon simulations
 +
|Kazu Miyazaki (JPL)<br>Melissa Sulprizio (Harvard)
 +
|Input data
 +
|Simple
 +
|Data delivered<br>Oct 2024
 +
|
 +
*This will be the default OH, but users will have the option of selecting other OH fields
 +
*[https://github.com/geoschem/geos-chem/issues/2537 geos-chem issue #2537]
 +
 +
|-valign="top"
 +
|Dust non-sphericity impacts on optical properties
 +
|Inderjeet Singh (WashU)
 +
|Aerosols
 +
|Medium
 +
|Not yet delivered
 
|
 
|
−
*[https://github.com/geoschem/HEMCO/issues/18 HEMCO issue #18]
 
  
 
|}
 
|}
Line 122: Line 185:
 
|-valign="top"
 
|-valign="top"
 
|Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol
 
|Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol
−
|Camilo Serrano and Andreas Zuend (McGill)
+
|Camilo Serrano (McGill)<br>Andreas Zuend (McGill)
 
|Aerosols
 
|Aerosols
 
|Not delivered
 
|Not delivered
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/2392 geos-chem issue #2392]
  
 
|-valign="top"
 
|-valign="top"
−
|Extend aerosol settling
+
|Update UCX to include gravitational settling of aerosol species beyond just BCPI
−
|Eloise Marais (UCL)
+
|Conor Barker (UCL)<br>Eloise Marais (UCL)
−
|Aerosols
+
−
|Not delivered
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Comment back in Ca, Mg, and K cations in aerosol thermo (HETP)
+
−
|Becky Alexander (UW)
+
 
|Aerosols
 
|Aerosols
 
|Not delivered
 
|Not delivered
Line 143: Line 200:
 
|-valign="top"
 
|-valign="top"
 
|Seasalt aerosol from sea ice leads (2002-2011)
 
|Seasalt aerosol from sea ice leads (2002-2011)
−
|Hannah (UIUC)
+
|Hannah Horrowitz (UIUC)
 
|Aerosols
 
|Aerosols
 
|Not delivered
 
|Not delivered
 
|
 
|
 +
*Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
  
 
|-valign="top"
 
|-valign="top"
−
|P/L species should not contribute to the error norm
+
|Global organic N dep from various emissions; nitrate aromatics updates
−
|Obin Sturm (PSC)
+
|May Fu (SUSTech)
−
|Chemistry
+
−
|Not delivered
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Additional 6 peroxynitrates (many PANs like species); improve ALK4 & add ALK6
+
−
|Katherine Travis (NASA LARC)
+
−
|Chemistry
+
−
|Not delivered
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Monoterpene oxdation more species & oxdiation products
+
−
|Kevin Bates (CU Boulder)
+
−
|Chemistry
+
−
|Not delivered
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|PPN photolysis
+
−
|Eloise Marais (University College London)
+
−
|Chemistry
+
−
|Not delivered
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|global orgainc N dep from various emissions; nitrate aromatics updates
+
−
|Tzung-May Fu (SUSTech)
+
 
|Chemistry +<br>Deposition
 
|Chemistry +<br>Deposition
 
|Not delivered
 
|Not delivered
Line 184: Line 214:
  
 
|-valign="top"
 
|-valign="top"
−
|adaptive chemistry (domain-specific) in WRF-GC
+
|Dry deposition to F90 to improve readability
−
|Tzung-May Fu (SUSTech)
+
−
|Chemistry
+
−
|Not delivered
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Alk4 from biogenic vs anthro
+
−
|Jared Brewer (UMN)
+
−
|Chemistry
+
−
|Not delivered
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Dry deposition to F90 (readability)
+
 
|Chris Holmes (FSU)
 
|Chris Holmes (FSU)
 
|Dry Deposition
 
|Dry Deposition
 
|Not delivered
 
|Not delivered
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/2389 geos-chem issue #2389]
  
 
|-valign="top"
 
|-valign="top"
 
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
 
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
−
|Joey Lam, Amos Tai (CUHK)
+
|Joey Lam (CUHK)<br>Amos Tai (CUHK)
 
|Dry deposition
 
|Dry deposition
−
|Not delivered
+
|Delivered<br>Feb 2021
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
−
|FRP-based fire emissions for eastern US at 0.2
+
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
 
|Chris Holmes (FSU)
 
|Chris Holmes (FSU)
 
|Emissions
 
|Emissions
 
|Not delivered
 
|Not delivered
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/2388 geos-chem issue #2388]
  
 
|-valign="top"
 
|-valign="top"
Line 231: Line 250:
 
|Not delivered
 
|Not delivered
 
|
 
|
−
 
+
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.  
−
|-valign="top"
+
−
|Rasterized shapefiles high-resolution for oil and gas infrastructure in North America
+
−
|Lee Murray (Rochester)
+
−
|Emissions
+
−
|Not delivered
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|New soil NOx parameterization
+
−
|Yi Wang (U. Iowa), Jun Wang (U. Iowa)
+
−
|Emissions
+
−
|Not delivered
+
−
|
+
  
 
|-valign="top"
 
|-valign="top"
Line 250: Line 256:
 
|Minjie Zheng (ETH)
 
|Minjie Zheng (ETH)
 
|Emissions
 
|Emissions
−
|Not delivered
+
|Delivered<br>June 2024
 
|
 
|
 +
*Available at https://zenodo.org/records/8372652
  
 
|-valign="top"
 
|-valign="top"
 
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
 
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|Yang Li (Baylor University), Loretta Mickley (Harvard)
+
|Yang Li (Baylor U)<br>Loretta Mickley (Harvard)
 
|Emissions
 
|Emissions
−
|Not delivered
+
|Delivered
 
|
 
|
 +
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
−
|Australian emissions
+
|Australian Hg emissions (2000-2019)
−
|Stephen MacFarlane/Jenny Fisher (UWollongong)
+
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
 
|Emissions
 
|Emissions
 
|Not delivered
 
|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"
 
|-valign="top"
−
|Geogenic emissions (volcanic, rock weathering)
+
|Hg geogenic emissions (volcanic, rock weathering)
 
|Eric Roy (MIT)
 
|Eric Roy (MIT)
 
|Emissions
 
|Emissions
 
|Not delivered
 
|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"
−
|Biomass burning - FINN2.5 & GFED4
+
|Hg biomass burning - FINN2.5 & GFED4
 
|Eric Roy (MIT)
 
|Eric Roy (MIT)
 
|Emissions
 
|Emissions
 
|Not delivered
 
|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"
Line 290: Line 304:
 
|-valign="top"
 
|-valign="top"
 
|GC-YIBS with online fire emissions
 
|GC-YIBS with online fire emissions
−
|Xu Yue; Hong Liao; Xu Yue (NUIST)
+
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
 
|External Model
 
|External Model
 
|Not delivered
 
|Not delivered
Line 301: Line 315:
 
|Not delivered
 
|Not delivered
 
|
 
|
−
 
−
|-valign="top"
 
−
|Archived TCR-2 OH fields for carbon simulations
 
−
|Kazu Miyazaki (JPL)
 
−
|Input data
 
−
|Not delivered
 
−
|
 
−
 
−
|-valign="top"
 
−
|GOOPy (General Observation Operator in Python): for processing satellite and model output to produce column fields using averaging kernels
 
−
|Hannah Nesser (JPL) , Elise Penn (Harvard)
 
−
|Tools
 
−
|Not delivered
 
−
|
 
−
* Could be added into GCPy as a Git submodule
 
  
 
|}
 
|}
Line 329: Line 328:
 
!width="100px"|Model scope
 
!width="100px"|Model scope
 
!width="420px"|Notes and References
 
!width="420px"|Notes and References
−
 
  
 
|-valign="top"
 
|-valign="top"
−
|Capture all trop and PBL height changes in budget diagnostics
+
|Fixes to stratospheric aerosol settling
−
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
+
|Connor Barker (UCL)<br>Eloise Marais (UCL)
−
|Diagnostics
+
|Aerosols
−
|Medium
+
−
|Delivered
+
 
|
 
|
−
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 
  
 
|-valign="top"
 
|-valign="top"
−
|Dust non-sphericity impacts on optical properties
+
|DMS chemistry in v14
−
|Inderjeet Singh (WashU)
+
|Linia Tashmim (UCR)<br>Will Porter (UCR)
−
|Aerosols
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Fixes to stratospheric aerosol settling
+
|KPP standalone + 3D Interface
−
|Connor Barker, Eloise Marais (UCL)
+
|Obin Sturm (USC)
−
|Aerosols
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|DMS chemistry in v14
+
|NO2+OH+H2O kinetics
−
|Linia Tashmim and Will Porter (UC Riverside)
+
|Mat Evans (York)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|KPP standalone + 3D Interface
+
|LSODES solver in KPP for faster kinetics
−
|Obin Sturm (PSC)
+
|Haipeng Lin (Harvard)
 
|Chemistry
 
|Chemistry
 
|
 
|
Line 366: Line 361:
 
|-valign="top"
 
|-valign="top"
 
|Load balancing in chemistry solver (GCHP)
 
|Load balancing in chemistry solver (GCHP)
−
|Zhouran (Jordan) Sun (WashU)
+
|Zhouran Sun (WashU)
 
|Chemistry +<br>Performance
 
|Chemistry +<br>Performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|UCX chemistry in mesosphere (GCHP/GCClassic)
+
|Active chemistry in mesosphere for both GCHP and GCClassic
−
|Helena McDonald (MIT)
+
|Helena McDonald (MIT)<br>Sebastian Eastham (ICL)
 
|Chemistry
 
|Chemistry
 
|
 
|
Line 378: Line 373:
 
|-valign="top"
 
|-valign="top"
 
|Updated aromatic oxidation
 
|Updated aromatic oxidation
−
|Stephen MacFarlane/Jenny Fisher (University of Wollongong)
+
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
 
|Chemistry
 
|Chemistry
 
|
 
|
Line 393: Line 388:
 
|Chemistry
 
|Chemistry
 
|
 
|
−
 
+
*Will have to change negative emissions from soil to a first-order loss process
−
|-valign="top"
+
−
|Active mesospheric chemistry
+
−
|Helena McDonald (MIT), Seb Eastham (IC)
+
−
|Chemistry
+
−
|
+
  
 
|-valign="top"
 
|-valign="top"
Line 404: Line 394:
 
|Connor Barker (UCL)
 
|Connor Barker (UCL)
 
|Documentation
 
|Documentation
−
|
 
−
 
−
|-valign="top"
 
−
|Improvements to Cloud-J for ESMs
 
−
|Lizzie Lundgren (Harvard)
 
−
|Cloud-J +<br>Structural
 
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
 
|Column diagnostics
 
|Column diagnostics
−
|Lizzie Lundgren (Harvard), Viral Shah (GMAO)
+
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
 
|Diagnostics
 
|Diagnostics
 
|
 
|
Line 422: Line 406:
 
|Betty Croft (WashU/Dal)
 
|Betty Croft (WashU/Dal)
 
|Diagnostics +<br>Performance
 
|Diagnostics +<br>Performance
−
|
 
−
 
−
|-valign="top"
 
−
|Fix obspack - not working in 14.4.0
 
−
|Bob Yantosca (Harvard)
 
−
|Diagnostics
 
 
|
 
|
  
Line 447: Line 425:
 
|Dry Deposition
 
|Dry Deposition
 
|
 
|
 +
*Available at https://zenodo.org/records/3614062#.XzvrH5NKjOR (GEOS-Chem 12.3.0)
  
 
|-valign="top"
 
|-valign="top"
 
|Dry deposition diagnostics by land cover
 
|Dry deposition diagnostics by land cover
−
|Holly Nowell, Chris Holmes (FSU)
+
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
 
|Dry Deposition
 
|Dry Deposition
 
|
 
|
Line 456: Line 435:
 
|-valign="top"
 
|-valign="top"
 
|Dry deposition process diagnostics
 
|Dry deposition process diagnostics
−
|Holly Nowell, Chris Holmes (FSU)
+
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
 
|Dry Deposition
 
|Dry Deposition
 
|
 
|
Line 467: Line 446:
  
 
|-valign="top"
 
|-valign="top"
−
|Historic biomass burning ()
+
|Historic biomass burning (1750-2010)
−
|Pengfei (Gtech)
+
|Pengfei Liu (Georgia Tech)
 
|Emissions
 
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Rice methane
+
|Rice methane emissions
 
|Zichong Cheng (Harvard)
 
|Zichong Cheng (Harvard)
−
|Emissions
+
|Emissions+<br>Carbon simulation
−
|
+
−
 
+
−
|-valign="top"
+
−
|Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.)
+
−
|Katie Travis / Kelvin Bates
+
−
|Emissions
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
 
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
 
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
−
|Melissa Sulprizio (Harvard), Tia Scarpelli (Carbon MAPPER)
+
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
 
|Emissions
 
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|New prior biospheric fluxes from CMS-FLUX and GMAO
+
|New prior CO2 biospheric fluxes from CMS-FLUX and GMAO
−
|Kevin Bowman (JPL), Lesley Ott (GMAO)
+
|Kevin Bowman (JPL)<br>Lesley Ott (GMAO)
 
|Emissions
 
|Emissions
 
|
 
|
 +
*GMAO can provide high-resolution  fluxes (as high as 12 km)
  
 
|-valign="top"
 
|-valign="top"
Line 510: Line 484:
 
|-valign="top"
 
|-valign="top"
 
|Improve pressure handling in GCHP advection
 
|Improve pressure handling in GCHP advection
−
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
+
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
 
|GCHP
 
|GCHP
 
|
 
|
Line 517: Line 491:
 
|Add error trap for duplicate scale factors in HEMCO
 
|Add error trap for duplicate scale factors in HEMCO
 
|Bob Yantosca (Harvard)
 
|Bob Yantosca (Harvard)
−
|HEMCO
 
−
|
 
−
 
−
|-valign="top"
 
−
|Fix pressure handling in HEMCO standalone
 
−
|Melissa Sulprizio (Harvard)
 
 
|HEMCO
 
|HEMCO
 
|
 
|
Line 529: Line 497:
 
|Integration testing: Add stretched grid
 
|Integration testing: Add stretched grid
 
|Lizzie Lundgren (Harvard)
 
|Lizzie Lundgren (Harvard)
−
|Quality Assurance
 
−
|
 
−
 
−
|-valign="top"
 
−
|Integration testing: Add GCAP2
 
−
|GCST
 
 
|Quality Assurance
 
|Quality Assurance
 
|
 
|
Line 541: Line 503:
 
|Integration testing: Add GCHP mass flux run
 
|Integration testing: Add GCHP mass flux run
 
|Lizzie Lundgren (Harvard)
 
|Lizzie Lundgren (Harvard)
−
|Quality Assurance
 
−
|
 
−
 
−
|-valign="top"
 
−
|Integration testing: Add run with all diagnostics turned on
 
−
|GCST
 
 
|Quality Assurance
 
|Quality Assurance
 
|
 
|
Line 554: Line 510:
 
|Betty Croft (Dalhousie/WashU)
 
|Betty Croft (Dalhousie/WashU)
 
|Quality Assurance
 
|Quality Assurance
−
|
 
−
 
−
|-valign="top"
 
−
|Strat-adjusted RF in GCC and GCHP
 
−
|Connor Barker, Eloise Marais (UCL)
 
−
|Radiation
 
 
|
 
|
  
Line 569: Line 519:
  
 
|-valign="top"
 
|-valign="top"
−
|updates to Luo deposition scheme
+
|Updates to Luo deposition scheme
−
|Gan Luo
+
|Gan Luo (Albany)
 
|Wet Deposition
 
|Wet Deposition
 
|
 
|
 +
*New version, keep as switch (not default)
  
 
|-valign="top"
 
|-valign="top"
 
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
 
|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)
+
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
 
|Wet Deposition
 
|Wet Deposition
 
|
 
|
Line 595: Line 546:
 
|-valign="top"
 
|-valign="top"
 
|ML algorithms for bulk aerosol
 
|ML algorithms for bulk aerosol
−
|Arshad Nair and Fangqun Yu (SUNY Albany)
+
|Arshad Nair (Albany)<br>Fangqun Yu (Albany)
 
|Aerosols
 
|Aerosols
 
|
 
|
−
 
  
 
|-valign="top"
 
|-valign="top"
 
|Heterogeneous sulfate chemistry
 
|Heterogeneous sulfate chemistry
−
|Katie Travis
+
|Katie Travis (NASA)
 
|Chemistry
 
|Chemistry
 
|
 
|
Line 608: Line 558:
 
|-valign="top"
 
|-valign="top"
 
|H2 as an active species
 
|H2 as an active species
−
|Seb Eastham (IC)
+
|Seb Eastham (ICL)
 
|Chemistry
 
|Chemistry
 
|
 
|
Line 622: Line 572:
 
|Yuzhong Zhang (Westlake)
 
|Yuzhong Zhang (Westlake)
 
|Chemistry
 
|Chemistry
−
|
 
−
 
−
 
−
 
−
 
−
|-valign="top"
 
−
|VCPs emissions
 
−
|Kelvin Bates (CU Boulder)
 
−
|Emissions
 
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
 
|Mesospheric source of CO
 
|Mesospheric source of CO
−
|Dylan Jones (UofT), Pam Wales (GSFC)
+
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
 
|Emissions
 
|Emissions
 
|
 
|
Line 641: Line 582:
 
|-valign="top"
 
|-valign="top"
 
|Drought-stress algorithm
 
|Drought-stress algorithm
−
|Wei Li (U. Houston)
+
|Wei Li (Houston)
 
|Emissions
 
|Emissions
 
|
 
|
Line 653: Line 594:
 
|-valign="top"
 
|-valign="top"
 
|Canadian forest fire prediction system (Canada government forecast model)
 
|Canadian forest fire prediction system (Canada government forecast model)
−
|Robin (Montreal)
+
|Robin Stevens (Montreal)
−
|Emissions
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Furan emission factors (updates existing emissions)
+
−
|Lu Hu/Lixu Jin (Montana)
+
 
|Emissions
 
|Emissions
 
|
 
|
Line 680: Line 615:
 
|External model
 
|External model
 
|
 
|
−
 
−
 
  
 
|-valign="top"
 
|-valign="top"
 
|Hybrid MPI-OpenMP in GCHP
 
|Hybrid MPI-OpenMP in GCHP
−
|Seb Eastham (MIT); Killian Murphy (York); Lizzie Lundgren (Harvard)
+
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>Lizzie Lundgren (Harvard)
 
|GCHP
 
|GCHP
 
|
 
|
−
 
  
 
|-valign="top"
 
|-valign="top"
Line 719: Line 651:
 
|Performance
 
|Performance
 
|
 
|
−
 
−
 
  
 
|-valign="top"
 
|-valign="top"
 
|Photophysical oxidation of aldehydes
 
|Photophysical oxidation of aldehydes
−
|Paulo Sebastianelli/Jenny Fisher (University of Wollongong)
+
|Paulo Sebastianelli (Wollongong)<br>Jenny Fisher (Wollongong)
 
|Chemistry
 
|Chemistry
 
|
 
|
Line 736: Line 666:
 
|-valign="top"
 
|-valign="top"
 
|Furans emission and chemistry
 
|Furans emission and chemistry
−
|Lixu Jin/Lu Hu(U Montana)
+
|Lixu Jin (Montana)<br>Lu Hu (Montana)
 
|Chemistry + <br>Emissions
 
|Chemistry + <br>Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Cl2 prodcution from Fe aerosol Qianjie Chen
+
|Cl2 prodcution from Fe aerosol
−
|(Hong Kong Poly)/Becky Alexander (UW)
+
|Qianjie Chen (HK Poly)<br>Becky Alexander (UW)
 
|Chemistry
 
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|VCP, cooking: tracers species added i.e., D5, ethanol affecting PAN
+
|VCP emissions
 
|Kevin Bates (CU Boulder)
 
|Kevin Bates (CU Boulder)
 
|Emissions
 
|Emissions
Line 753: Line 683:
  
 
|-valign="top"
 
|-valign="top"
−
|bidirectional land-atmosphere exchange for Hg
+
|Bidirectional land-atmosphere exchange for Hg
 
|Yuying Cui (MIT/Tsinghua)
 
|Yuying Cui (MIT/Tsinghua)
 
|Hg simulation
 
|Hg simulation
Line 766: Line 696:
 
|-valign="top"
 
|-valign="top"
 
|CESM2-GC offline
 
|CESM2-GC offline
−
|Seb Eastham (ICL); Lee Murray (Rochester)
+
|Seb Eastham (ICL)<br>Lee Murray (Rochester)
 
|Met fields
 
|Met fields
 
|
 
|
Line 826: Line 756:
 
|-valign="top"
 
|-valign="top"
 
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
 
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
−
|Bob Yantosca (Harvard); Lee Murray (Rochester)
+
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
 
|Structural
 
|Structural
 
|
 
|
Line 840: Line 770:
 
|Melissa Sulprizio (Harvard)
 
|Melissa Sulprizio (Harvard)
 
|Structural
 
|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
 
|
 
|
  
Line 863: Line 799:
 
|-valign="top"
 
|-valign="top"
 
|Online OCIM ocean biogeochemistry
 
|Online OCIM ocean biogeochemistry
−
|Lee Murray (Rochester); Hannah Horowitz (UIUC); Chris Holmes (FSU)
+
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
 
|Chemistry
 
|Chemistry
 
|
 
|
Line 899: Line 835:
 
|-valign="top"
 
|-valign="top"
 
|HFO and CF3CHO
 
|HFO and CF3CHO
−
|Beth Killen/Jenny Fisher (University of Wollongong)
+
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
 
|Chemistry
 
|Chemistry
 
|
 
|
Line 911: Line 847:
 
|-valign="top"
 
|-valign="top"
 
|Iodine chemistry
 
|Iodine chemistry
−
|Becky Alexander (UW)/Xuan Wang (cityU HK)
+
|Becky Alexander (UW)<br>Xuan Wang (CUHK)
−
|Chemistry
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Chlorine/Perchlorate
+
−
|Yukchun Chan (UW)
+
−
|Chemistry
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Playa dust chemistry to improve Cl over land
+
−
|Jessica Haskins (Utah)
+
 
|Chemistry
 
|Chemistry
 
|
 
|
Line 935: Line 859:
 
|-valign="top"
 
|-valign="top"
 
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
 
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
−
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
+
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
 
|Hg simulation
 
|Hg simulation
 
|
 
|
Line 941: Line 865:
 
|-valign="top"
 
|-valign="top"
 
|Soil Hg emissions 2010-2020
 
|Soil Hg emissions 2010-2020
−
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
+
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
 
|Hg simulation
 
|Hg simulation
 
|
 
|
Line 970: Line 894:
  
 
|-valign="top"
 
|-valign="top"
−
|new observations (2010-2020) in standardized Hg benchmark for intercomparison
+
|New observations (2010-2020) in standardized Hg benchmark for intercomparison
 
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
 
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
 
|Hg simulation
 
|Hg simulation
Line 988: Line 912:
  
 
|-valign="top"
 
|-valign="top"
−
|possibly updating Hg oxidation chemistry based on Utah field campaigns
+
|Possibly updating Hg oxidation chemistry based on Utah field campaigns
 
|Jessica Haskins (Utah)
 
|Jessica Haskins (Utah)
 
|Hg simulation
 
|Hg simulation

Latest revision as of 16:19, 31 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
Derive convective precipitation flux if using FP/IT generated with Grell-Freitas Yuanjian Zhang (WashU)
Viral Shah (GMAO)
Lizzie Lundgren (Harvard) 		Convection 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
Correct the issue that injection height has been artificially decreased by HEMCO Lixu Jun (Montana) Emissions Simple Delivered
June 2024
Capability to run GCClassic at 0.125x0.15625 resolution Melissa Sulprizio (Harvard)
Xiaolin Wang (Harvard) 		Nested grid Simple Delivered
Strat-adjusted RF in GCC and GCHP Connor Barker (UCL)
Eloise Marais (UCL) 		Radiation Simple Delivered
Archived TCR-2 OH fields for carbon simulations Kazu Miyazaki (JPL)
Melissa Sulprizio (Harvard) 		Input data Simple Data delivered
Oct 2024
  • This will be the default OH, but users will have the option of selecting other OH fields
  • geos-chem issue #2537
Dust non-sphericity impacts on optical properties Inderjeet Singh (WashU) Aerosols Medium Not yet delivered

Ready to go in

Features listed in this table are ready to go in but have either not been delivered or are not yet prioritized for integration into GEOS-Chem.

Feature Contributor(s) Model scope Delivery status Notes and Refereneces


Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol Camilo Serrano (McGill)
Andreas Zuend (McGill) 		Aerosols Not delivered
Update UCX to include gravitational settling of aerosol species beyond just BCPI Conor Barker (UCL)
Eloise Marais (UCL) 		Aerosols Not delivered
Seasalt aerosol from sea ice leads (2002-2011) Hannah Horrowitz (UIUC) Aerosols Not delivered
  • Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
Global organic N dep from various emissions; nitrate aromatics updates May Fu (SUSTech) Chemistry +
Deposition 		Not delivered
Dry deposition to F90 to improve readability Chris Holmes (FSU) Dry Deposition Not delivered
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam (CUHK)
Amos Tai (CUHK) 		Dry deposition Delivered
Feb 2021
FRP-based fire emissions for eastern US at 0.2 (2019-2020) Chris Holmes (FSU) Emissions Not delivered
China agriculture NH3 emissions Amos Tai (CUHK) Emissions Not delivered
T-dependent anthropogenic VOCs May Fu (SUSTech) Emissions Not delivered
  • Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.
New source functions for transport tracers beryllium-7 and beryllium-10 Minjie Zheng (ETH) Emissions Delivered
June 2024
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor U)
Loretta Mickley (Harvard) 		Emissions Delivered
  • Data involves many files- need to think about temporal frequency
Australian Hg emissions (2000-2019) Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Emissions Not delivered
  • MacFarlane et al. (2024)
  • Includes emissions from black and brown coal power plants, various metal production/processing sources (Aluminium, gold, copper, lead, etc), waste products, cement production, oil refining and petroleum, chlor alkali plants, and cremation
Hg geogenic emissions (volcanic, rock weathering) Eric Roy (MIT) Emissions Not delivered
Hg biomass burning - FINN2.5 & GFED4 Eric Roy (MIT) Emissions Not delivered
BCC-GC online Lin Zhang (PKU) External Model Not delivered
GC-YIBS with online fire emissions Xu Yue (NUIST)
Hong Liao (NUIST) 		External Model Not delivered
GISS-GC offline (GCAP) Lee Murray (Rochester) GCAP Not delivered

Almost there (< 6 months)

Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.

Feature Contributor(s) Model scope Notes and References
Fixes to stratospheric aerosol settling Connor Barker (UCL)
Eloise Marais (UCL) 		Aerosols
DMS chemistry in v14 Linia Tashmim (UCR)
Will Porter (UCR) 		Chemistry
KPP standalone + 3D Interface Obin Sturm (USC) Chemistry
NO2+OH+H2O kinetics Mat Evans (York) Chemistry
LSODES solver in KPP for faster kinetics Haipeng Lin (Harvard) Chemistry
Load balancing in chemistry solver (GCHP) Zhouran Sun (WashU) Chemistry +
Performance
Active chemistry in mesosphere for both GCHP and GCClassic Helena McDonald (MIT)
Sebastian Eastham (ICL) 		Chemistry
Updated aromatic oxidation Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
MCO3 uptake by cloud forming MP; leading to lower PAN Laura Yang (Harvard) Chemistry
Implement isotope simulation for CH4 in the carbon simulation Lee Murray (Rochester) Chemistry
  • Will have to change negative emissions from soil to a first-order loss process
Documentation for adding additional aerosol species Connor Barker (UCL) Documentation
Column diagnostics Lizzie Lundgren (Harvard)
Viral Shah (GMAO) 		Diagnostics
TOMAS rate diagnostics -- improve performance Betty Croft (WashU/Dal) Diagnostics +
Performance
Archive gamma values from heterogeneous chemistry Bob Yantosca (Harvard) Diagnostics
RRTMG Documentation GCST Documentation
Canopy Physics Model Sam Silva (MIT) Dry Deposition
Dry deposition diagnostics by land cover Holly Nowell (FSU)
Chris Holmes (FSU) 		Dry Deposition
Dry deposition process diagnostics Holly Nowell (FSU)
Chris Holmes (FSU) 		Dry Deposition
Biomass burning for TOMAS Nicole June (CSU) Emissions +
Microphysics
Historic biomass burning (1750-2010) Pengfei Liu (Georgia Tech) Emissions
Rice methane emissions Zichong Cheng (Harvard) Emissions+
Carbon simulation
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Tia Scarpelli (Carbon Mapper)
Melissa Sulprizio (Harvard) 		Emissions
New prior CO2 biospheric fluxes from CMS-FLUX and GMAO Kevin Bowman (JPL)
Lesley Ott (GMAO) 		Emissions
  • GMAO can provide high-resolution fluxes (as high as 12 km)
Snowpack Br2 emission Chris Holmes (FSU) Emissions
EDGAR v8.1_toxHg emissions for 1970-2022 Eric Roy (MIT) Emissions
Improve pressure handling in GCHP advection Yuanjian Zhang (WashU)
Seb Eastham (ICL) 		GCHP
Add error trap for duplicate scale factors in HEMCO Bob Yantosca (Harvard) HEMCO
Integration testing: Add stretched grid Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Add GCHP mass flux run Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Reinstate TOMAS40 Betty Croft (Dalhousie/WashU) Quality Assurance
Continue cleanup of C-preprocessor switches Lizzie Lundgren (Harvard) Structural
Updates to Luo deposition scheme Gan Luo (Albany) Wet Deposition
  • New version, keep as switch (not default)
Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer Gan Luo (Albany)
Fangqun Yu (Albany) 		Wet Deposition

Over the horizon (6-12 months)

Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.

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

Longer term (12-24 months)

Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.

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