GEOS-Chem model development priorities: Difference between revisions

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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main 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''']].


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 ==


== GEOS-Chem versions in development ==
See the links below for items merged and awaiting release.


=== 13.0.0 ===
{| border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
!width="300px"|Mergeable at any time
!width="200px"|Version in development


<span style="color:darkorange">'''See the [[GEOS-Chem 13.0.0]] page for more details.'''''</span>
|-valign="top"
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
|align="center"|'''[[GEOS-Chem 14.6.0]]'''


== Priorities assigned to upcoming GEOS-Chem versions ==
|}


=== 13.1.0 ===
== Feature integration in progress ==


This version will require a 1-month full-chemistry benchmark.
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  
|-bgcolor="#CCCCCC"
|-bgcolor="#CCCCCC"
!width="500px"|Feature
!width="200px"|Feature
!width="200px"|Submitted by
!width="200px"|Contributor(s)
!width="100px"|Type
!width="100px"|Model scope
!width="300px"|Notes
!width="100px"|Ease of implementation
!width="300px"|Notes and References
 
|-valign="top"
|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"
|-valign="top"
|[https://github.com/geoschem/HEMCO/issues/46 Distribute emissions vertically in the boundary layer]
|Carbon simulation fixes in GCClassic and GCHP
|Barron Henderson (EPA)<br>GCST
|Melissa Sulprizio (Harvard)<br>Lizzie Lundgren (Harvard)
|Structural &<br>Science
|Carbon simulation
|Medium
|
|
*Vertical profiles have been delivered to GCST
*[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"
|-valign="top"
|[https://pubs.acs.org/doi/10.1021/acs.est.8b07241 Diurnal scale factors of power plants emissions in China]
|Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver
|Hongjian Weng (PKU)<br>Jintai Lin (PKU)
|Bob Yantosca (Harvard)
|Science
|Chemistry
|Medium
|
|
*See [https://github.com/geoschem/geos-chem/issues/548 geoschem/geos-chem #548]
*[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"
|[https://github.com/geoschem/geos-chem/pull/615 Restore J-values for the planeflight diagnostic]
|Fix obspack - not working in 14.4.0
|Tomas Sherwen (York)
|Bob Yantosca (Harvard)
|Structural
|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]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/pull/364 Initial modifications for HEMCO internal grid]
|Derive convective precipitation flux if using FP/IT generated with Grell-Freitas
|Haipeng Lin (Harvard)
|Yuanjian Zhang (WashU)<br>Viral Shah (GMAO)<br>Lizzie Lundgren (Harvard)
|Structural
|Convection
|Medium
|
|
*[https://github.com/geoschem/geos-chem/issues/2469 geos-chem Issue #2469]
*[https://github.com/geoschem/geos-chem/pull/2523 geos-chem PR #2523]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/GCHP/pull/71 Initial modifications for GCHP adjoint - CO2 simulation]
|GCHP mass flux fixes
|Colin Lee (WUStL)
|Yuanjian Zhang (WashU)
|Structural
|GCHP
|Simple
|
|
*[https://github.com/geoschem/GCHP/pull/456 GCHP PR 456]


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/GCHP/issues/55 Update GMAO submodules in GCHP]
|HEMCO log print updates
|GCST
|Lizzie Lundgren (Harvard)
|Structural
|ESMs
|Medium
|
|
*[https://github.com/geoschem/HEMCO/pull/296 HEMCO PR 296]


|-valign="top"
|-valign="top"
|Updates to speed up the chemical solver
|Fix yaml reader bug with certain compilers
#[https://github.com/geoschem/geos-chem/issues/598 Remove useless computations from reaction rate-law functions]
|Lizzie Lundgren (Harvard)
#[https://github.com/geoschem/geos-chem/pull/496 Use <tt>!$OMP COLLAPSE(2)</tt> to vectorize the parallel loop in DO_FLEXCHEM]
|Build
|GCST
|Simple
|Structural
|
|
*[https://github.com/geoschem/geos-chem/pull/2486 geos-chem PR 2486]


|}
|}


=== 13.2.0 ===
== Prioritized and in the queue ==


This version will require a 1-month and 1-year full-chemistry benchmarks, with and without Luo wet deposition.
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  
|-bgcolor="#CCCCCC"
|-bgcolor="#CCCCCC"
!width="500px"|Feature
!width="200px"|Feature
!width="200px"|Submitted by
!width="200px"|Contributor(s)
!width="100px"|Type
!width="100px"|Model scope
!width="300px"|Notes
!width="100px"|Ease of implementation
!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)
|Science
|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://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Correct the issue that injection height has been artificially decreased by HEMCO
|Sam Silva (MIT)
|Lixu Jun (Montana)
|Structural
|Emissions
|Simple
|Delivered<br>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"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2879/2020/ Improved wet scavenging from Luo et al. (2020)] (as option)
|Capability to run GCClassic at 0.125x0.15625 resolution
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
|Melissa Sulprizio (Harvard)<br>Xiaolin Wang (Harvard)
|Science
|Nested grid
|Simple
|Delivered
|
|
*Delivered to GCST (Nov 2020)
*[https://github.com/geoschem/geos-chem/pull/1980 geos-chem PR #1980]
*See [https://github.com/geoschem/geos-chem/pull/522 geoschem/geos-chem PR #522]
*[https://github.com/geoschem/HEMCO/pull/290 HEMCO PR #290]
*These updates will replace the Luo et al. (2019) option


|-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"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for lightning NOx, volcano, and open fire emissions]
|Archived TCR-2 OH fields for carbon simulations
|GCST
|Kazu Miyazaki (JPL)<br>Melissa Sulprizio (Harvard)
|Science
|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"
|-valign="top"
|[https://www.sciencedirect.com/science/article/abs/pii/S1352231019305138?via%3Dihub Trace metal simulation]
|Dust non-sphericity impacts on optical properties
|Junwei Xu (Dalhousie)
|Inderjeet Singh (WashU)
|Science
|Aerosols
|Medium
|Not yet delivered
|
|
*Delivered to GCST (Nov 2020)
*See [https://github.com/geoschem/geos-chem/pull/511 geoschem/geos-chem PR #511]


|}
|}


=== 13.3.0 ===
== Ready to go in ==


This version will require a 1-month and 1-year full-chemistry benchmarks, with and without the adaptive chemical solver.
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  
|-bgcolor="#CCCCCC"
|-bgcolor="#CCCCCC"
!width="500px"|Feature
!width="200px"|Feature
!width="200px"|Submitted by
!width="200px"|Contributor(s)
!width="100px"|Type
!width="100px"|Model scope
!width="300px"|Notes
!width="100px"|Delivery status
!width="300px"|Notes and Refereneces
 


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/560 C2H4 and C2H2 chemistry]
|Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
|Camilo Serrano (McGill)<br>Andreas Zuend (McGill)
|Science
|Aerosols
|Not delivered
|
|
*[https://github.com/geoschem/geos-chem/issues/2392 geos-chem issue #2392]


|-valign="top"
|-valign="top"
|[http://acmg.seas.harvard.edu/publications/2020/moch_2020_hms_global.pdf HMS chemistry]
|Update UCX to include gravitational settling of aerosol species beyond just BCPI
|Jonathan Moch (Harvard)
|Conor Barker (UCL)<br>Eloise Marais (UCL)
|Science
|Aerosols
|Not delivered
|
|
*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]
|Seasalt aerosol from sea ice leads (2002-2011)
|Lyatt Jaegle (UW)
|Hannah Horrowitz (UIUC)
|Science
|Aerosols
|Not delivered
|
|
*Delivered to GCST (Jun 2020)
*Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
*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]
|Global organic N dep from various emissions; nitrate aromatics updates
|Jeff Pierce (CSU)
|May Fu (SUSTech)
|Science
|Chemistry +<br>Deposition
|Not delivered
|
|
*See [https://github.com/geoschem/geos-chem/issues/604 geoschem/geos-chem #604]
 
|-valign="top"
|-valign="top"
|[http://globalchange.bnu.edu.cn/research/laiv6 Updated Yuan/BNU MODIS LAI product (2000-2019)]
|Dry deposition to F90 to improve readability
|Jenny Fisher (U. Wollongong)
|Chris Holmes (FSU)
|Science
|Dry Deposition
|Not delivered
|
|
*Processing scripts delivered to GCST (Aug 2020)
*[https://github.com/geoschem/geos-chem/issues/2389 geos-chem issue #2389]


|-valign="top"
|-valign="top"
|[https://acp.copernicus.org/articles/21/1861/2021/ Updated Rn-222 emissions]
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Bo Zhang
|Joey Lam  (CUHK)<br>Amos Tai (CUHK)
|Science
|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
|
*[https://github.com/geoschem/geos-chem/issues/2388 geos-chem issue #2388]
 
|-valign="top"
|China agriculture NH3 emissions
|Amos Tai (CUHK)
|Emissions
|Not delivered
|
 
|-valign="top"
|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.
 
|-valign="top"
|New source functions for transport tracers beryllium-7 and beryllium-10
|Minjie Zheng (ETH)
|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
|
|
*The existing Rn emissions will remain as an option
*Data involves many files- need to think about temporal frequency
*Data are available at https://doi.org/10.5281/zenodo.3942287


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
|Australian Hg emissions (2000-2019)
|Lu Shen (Harvard)
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Science
|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"
|Hg biomass burning - FINN2.5 & GFED4
|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"
|BCC-GC online
|Lin Zhang (PKU)
|External Model
|Not delivered
|
 
|-valign="top"
|GC-YIBS with online fire emissions
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
|External Model
|Not delivered
|
 
|-valign="top"
|GISS-GC offline (GCAP)
|Lee Murray (Rochester)
|GCAP
|Not delivered
|
|


|}
|}


== Priorities not yet assigned to a particular version ==
== Almost there (< 6 months) ==


The following items have been identified as priorities for GEOS-Chem, but have not yet been assigned to a particular GEOS-Chem version.
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.


=== Ready to go in ===
{|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"
|DMS chemistry in v14
|Linia Tashmim (UCR)<br>Will Porter (UCR)
|Chemistry
|
 
|-valign="top"
|KPP standalone + 3D Interface
|Obin Sturm (USC)
|Chemistry
|
 
|-valign="top"
|NO2+OH+H2O kinetics
|Mat Evans (York)
|Chemistry
|
 
|-valign="top"
|LSODES solver in KPP for faster kinetics
|Haipeng Lin (Harvard)
|Chemistry
|
 
|-valign="top"
|Load balancing in chemistry solver (GCHP)
|Zhouran Sun (WashU)
|Chemistry +<br>Performance
|
 
|-valign="top"
|Active chemistry in mesosphere for both GCHP and GCClassic
|Helena McDonald (MIT)<br>Sebastian Eastham (ICL)
|Chemistry
|
 
|-valign="top"
|Updated aromatic oxidation
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Chemistry
|
 
|-valign="top"
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Laura Yang (Harvard)
|Chemistry
|
 
|-valign="top"
|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
 
|-valign="top"
|Documentation for adding additional aerosol species
|Connor Barker (UCL)
|Documentation
|
 
|-valign="top"
|Column diagnostics
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
|Diagnostics
|
 
|-valign="top"
|TOMAS rate diagnostics -- improve performance
|Betty Croft (WashU/Dal)
|Diagnostics +<br>Performance
|
 
|-valign="top"
|Archive gamma values from heterogeneous chemistry
|Bob Yantosca (Harvard)
|Diagnostics
|
 
|-valign="top"
|RRTMG Documentation
|GCST
|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"
|Dry deposition diagnostics by land cover
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|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
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|-bgcolor="#CCCCCC"
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
!width="500px"|Feature
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
!width="200px"|Submitted by
|Emissions
!width="100px"|Type
|
!width="300px"|Notes


|-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"
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
|Snowpack Br2 emission
|Chris Holmes (FSU)
|Chris Holmes (FSU)
|Science
|Emissions
|
 
|-valign="top"
|EDGAR v8.1_toxHg emissions for 1970-2022
|Eric Roy (MIT)
|Emissions
|
|


|-valign="top"
|-valign="top"
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
|Improve pressure handling in GCHP advection
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
|Science
|GCHP
|
|
*Delivered to GCST (Jun 2020)


|-valign="top"
|-valign="top"
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
|Add error trap for duplicate scale factors in HEMCO
|Sam Silva (MIT)
|Bob Yantosca (Harvard)
|Science
|HEMCO
|
|
*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]
|Integration testing: Add stretched grid
|Xu Yue (NUIST)
|Lizzie Lundgren (Harvard)
|Science
|Quality Assurance
|
|
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]


|-valign="top"
|-valign="top"
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
|Integration testing: Add GCHP mass flux run
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
|Lizzie Lundgren (Harvard)
|Science
|Quality Assurance
|
|


|-valign="top"
|Integration testing: Reinstate TOMAS40
|Betty Croft (Dalhousie/WashU)
|Quality Assurance
|


|-valign="top"
|-valign="top"
|Archived CMIP6 Met Products for GEOS-Chem Input
|Continue cleanup of C-preprocessor switches
|Lee Murray (Rochester)
|Lizzie Lundgren (Harvard)
|Science
|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
|
|
*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


|}
|}


=== Almost there (< 6 months) ===
== 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="500px"|Item
!width="200px"|Feature
!width="200px"|Author(s)
!width="200px"|Contributor(s)
!width="100px"|Type
!width="100px"|Model scope
!width="300px"|Notes
!width="420px"|Notes and References


|-valign="top"
|-valign="top"
|Fix stratospheric flooding
|ML algorithms for bulk aerosol
|Sebastian Eastham (MIT)
|Arshad Nair (Albany)<br>Fangqun Yu (Albany)
|Science/Bug fix
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Diagnostic to archive XCO2, XCO, and XCH4
|Heterogeneous sulfate chemistry
|Dylan Jones (Toronto)
|Katie Travis (NASA)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
|H2 as an active species
|Kazu Miyazaki (JPL)
|Seb Eastham (ICL)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Aromatic VOC chemistry
|HCN, acetonitrile as fire tracers
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
|Kevin Bates (CU Boulder)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|BrC aging
|Implement ethane in carbon simulation
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
|Yuzhong Zhang (Westlake)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|One-Way Coupling w/ GISS ModelE3
|Mesospheric source of CO
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
|Emissions
|
 
|-valign="top"
|Drought-stress algorithm
|Wei Li (Houston)
|Emissions
|
 
|-valign="top"
|Physically-based resolution correction for BVOC emissions using MEGAN
|May Fu (SUSTech)
|Emissions
|
 
|-valign="top"
|Canadian forest fire prediction system (Canada government forecast model)
|Robin Stevens (Montreal)
|Emissions
|
 
|-valign="top"
|Cooking emissions (not biofuel)
|Kelvin Bates (CU Boulder)
|Emissions
|
 
|-valign="top"
|State-specific annual emissions scaling factors (US) (1990-2021)
|Ishir Dutta (MIT)
|Emissions
|
 
|-valign="top"
|GISS-GC online
|Lee Murray (Rochester)
|Lee Murray (Rochester)
|Structural
|External model
|
 
|-valign="top"
|Hybrid MPI-OpenMP in GCHP
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>Lizzie Lundgren (Harvard)
|GCHP
|
 
|-valign="top"
|MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files
|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
|
 
|-valign="top"
|DMS updates
|Will Porter (UCR)
|Chemistry
|
 
|-valign="top"
|Furans emission and chemistry
|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
|
 
|-valign="top"
|Bidirectional land-atmosphere exchange for Hg
|Yuying Cui (MIT/Tsinghua)
|Hg simulation
|
 
|-valign="top"
|OH covariances for inversions
|Elise Penn (Harvard)
|Inversions
|
 
|-valign="top"
|CESM2-GC offline
|Seb Eastham (ICL)<br>Lee Murray (Rochester)
|Met fields
|
 
|-valign="top"
|Re-binning of off-line sea salt and dust for TOMAS
|Betty Croft (Dalhousie)
|Microphysics
|
 
|-valign="top"
|TOMAS nucleation updates
|Sam O'Donnell (CSU)
|Microphysics
|
 
|-valign="top"
|Stratospheric aerosol APM
|Fangqun Yu (SUNY Albany)
|Microphysics
|
 
|-valign="top"
|Transition from MERRA-2 to GEOS-IT for benchmarking
|Yuanjian Zhang (WashU)
|Quality Assurance
|
 
|-valign="top"
|Automate integration testing on AWS
|Yidan Tang (WashU)
|Quality Assurance
|
|
*Work is finished and a manuscript is in preparation


|-valign="top"
|-valign="top"
|Shared Socioeconomic Pathways Emission Inventories
|Integration testing: Add across end of year run
|Hong Liao (NUIST)
|GCST
|Science
|Quality Assurance
|
|


|-valign="top"
|-valign="top"
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Integration testing: Add GEOS-IT
|Amos Tai (CUHK)
|Yuanjian Zhang (WashU)
|Science
|Quality Assurance
|
|


|-valign="top"
|Separate mixing, emissions, and drydep
|Yuanjian Zhang (WashU)
|Structural
|


|-valign="top"
|-valign="top"
|Rediagnosis of RAS convection in GEOS-Chem
|Intel IFX compiler
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
|Bob Yantosca (Harvard)
|Science
|Structural
|
|
*Work is finished and a manuscript is in preparation.


|-valign="top"
|-valign="top"
|Read-in of native GEOS output in GCHP
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
|WUStL GCST
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
|Science
|Structural
|
|


|-valign="top"
|-valign="top"
|Adoption of the Spack package manager for dependency management
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
|Harvard GCST
|Lizzie Lundgren (Harvard)
|Structural
|Structural
|
|


|-valign="top"
|-valign="top"
|Modularization of GEOS-Chem: FAST-JX as proof-of-concept
|Limit allocation of State_Met to what is needed per simulation
|NASA GMAO
|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
|
|


|}
|}


=== 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
|- bgcolor="#cccccc"
|- bgcolor="#cccccc"
!width="500px"|Item
!width="200px"|Feature
!width="200px"|Author(s)
!width="200px"|Contributor(s)
!width="100px"|Type
!width="100px"|Model scope
!width="300px"|Notes
!width="420px"|Notes and References


|-valign="top"
|-valign="top"
|Update OCS simulation in the standard code
|Modal aerosol model (MAM7) in GCHP
|Kevin Bowman (JPL)
|Shreya Sharma (MIT)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Methylethylketone chemistry
|Online OCIM ocean biogeochemistry
|Jared Brewer (CSU)
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
|Science
|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)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Updated Hg chemistry:
|Non-stomatal dry deposition (2-layer canopy model)
*Streamlining of Hg simulation through HEMCO and KPP
|Michael Vermeuel (Purdue)
*Hg gas-phase photo-reduction
|Dry Deposition
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)
|Science
|
|


|-valign="top"
|-valign="top"
|GTMM updates
|Continental chloride particle emissions (salty dust, road salt)
|Ben Geyman (Harvard)
|Jessica Haskins (Utah)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Landcover/Fire Emissions Offline LPJlmfire
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
|Loretta Mickley (Harvard)
|Ruochong (Tshingua)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|[https://www.pnas.org/content/117/42/26076 Aerosol dry deposition updates]
|Lightning NOx production rates
|Jeff Pierce (CSU)
|Bex Horner (UCL)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
|HFO and CF3CHO
|Christoph Keller (NASA GMAO)
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
|Structural
|Chemistry
|
 
|-valign="top"
|Glyoxal updates from isoprene
|Tzung-May Fu (SUSTech)
|Chemistry
|
 
|-valign="top"
|Iodine chemistry
|Becky Alexander (UW)<br>Xuan Wang (CUHK)
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Mass flux-based transport in GCHP
|GFED5 biomass burning
|Sebastian Eastham (MIT)
|Eric Roy (MIT)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Streamlining of specialty simulations through HEMCO and KPP
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
|GCST
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Science
|Hg simulation
|
|


|}
|-valign="top"
|Soil Hg emissions 2010-2020
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
|Hg simulation
|


=== Longer term (12-24 months)===
|-valign="top"
|Air-sea exchange parameterization
|Eric Roy (MIT)
|Hg simulation
|


{| border=1 cellspacing=0 cellpadding=5
|-valign="top"
|- bgcolor="#cccccc"
|Soil Hg emissions parameterization
!width="500px"|Item
|Ari Feinberg (IQF-CSIC)
!width="200px"|Author(s)
|Hg simulation
!width="100px"|Type
|
!width="300px"|Notes


|-valign="top"
|-valign="top"
|GCHP Adjoint
|Sea salt uptake of GOM
|Daven Henze (CU Boulder)
|Eric Roy (MIT)
|Science
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Implement isotope simulation for CO and CH4 in GCHP
|Photoreduction rate constant
|Lee Murray (Rochester)
|Eric Roy (MIT)
|Science
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Migrate LETFK DA scheme to GCHP
|New observations (2010-2020) in standardized Hg benchmark for intercomparison
|Kazu Miyazaki (JPL)
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
|Science
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|Super fast chemistry scheme
|Hg simulation in GCHP
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
|Eric Roy (MIT)
|Science
|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
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
|Becky Alexander (UW)
|Hannah Horowitz (UIUC)
|Science
|Hg simulation
|
|


|-valign="top"
|-valign="top"
|DMS oxidation scheme updating
|Possibly updating Hg oxidation chemistry based on Utah field campaigns
|Becky Alexander (UW)<br>Qianjie Chen (UW)
|Jessica Haskins (Utah)
|Science
|Hg simulation
|
|
*Delayed - implemented pre-KPP
*Currently bring implemented in KPP by UC Riverside group


|-valign="top"
|-valign="top"
|Heterogeneous sulfate production
|New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
|Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC)
|Science
|Input data
|
|
*Delayed - implemented pre-KPP


|-valign="top"
|-valign="top"
|Hg in WRF-GC
|Extend IMI to CO2 (ICI)
|Yanxu Zhang (Nanjing)
|Hannah Nesser (JPL)  
|Science
|Inversions
|
|


|-valign="top"
|-valign="top"
|Hg with blowing snow
|Global emission inventory of metals
|Yanxu Xhang (Nanjing)
|Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U)
|Science
|Metals simulation
|
|


|-valign="top"
|-valign="top"
|Hg isotopes
|Investigate and improve performance of aerosol chemistry
|Xiaotian Xu, Yanxu Xhang (Nanjing)
|Bob Yantosca (Harvard)
|Science
|Performance
|
|


|-valign="top"
|-valign="top"
|Hg in CESM CAM-CHEM
|PAH - update from version 11
|Peng Zhang, Yanxu Xhang (Nanjing)
|Lexia Cicone (MIT)
|Science
|POPs simulation
|
|


|-valign="top"
|-valign="top"
|Complex / multicomplex variables
|Species database more accessible; doc updates; TOL discussion
|Shannon Capps (Drexel)
|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
|


----------------
|-valign="top"
|Comparing mass fluxes in GCHP vs. traditional lat/lon wind
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
|Transport
|


'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
|}

Latest revision as of 15:23, 20 November 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 14.6.0

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)
Carbon simulation fixes in GCClassic and GCHP Melissa Sulprizio (Harvard)
Lizzie Lundgren (Harvard) 		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
GCHP mass flux fixes Yuanjian Zhang (WashU) GCHP Simple
HEMCO log print updates Lizzie Lundgren (Harvard) ESMs Medium
Fix yaml reader bug with certain compilers Lizzie Lundgren (Harvard) Build Simple

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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