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]]'''''
+
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 ==
  
We also invite you to view our [https://trello.com/board/geos-chem-support-team/4fe36668fc79a1d3540ba80b GEOS-Chem Support Team project management board on Trello.com], which shows the current GCST workflow.
+
See the links below for items merged and awaiting release.
  
== Priorities assigned to upcoming GEOS-Chem versions ==
+
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="300px"|Mergeable at any time
 +
!width="200px"|Version in development
  
=== 12.8.0 ===
+
|-valign="top"
 +
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
 +
|align="center"|'''[[GEOS-Chem 14.5.0]]'''
  
<span style="color:darkorange">'''This version is currently in development. See [[GEOS-Chem_12#12.8.0|the ''GEOS-Chem 12'' wiki page]] for details.'''</span>
+
|}
  
=== 12.9.0 ===
+
== Feature integration in progress ==
  
This version will require 1-month and 1-year full-chemistry benchmarks.
+
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="100px"|Ease of implementation
 
!width="300px"|Notes and References
 
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Updates that WILL AFFECT the full-chemistry simulation
+
|ALK4 & R4N2 chemistry
 +
|Jared Brewer (UMN)
 +
|Chemistry
 +
|Simple
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2352 geos-chem PR #1625]
 +
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., 2023.]
  
 
|-valign="top"
 
|-valign="top"
|[https://www.atmos-chem-phys.net/19/3981/2019/ Updated halogen chemistry]
+
|Fix pressure handling in HEMCO standalone
|Xuan Wang (Harvard)<br>Tomas Sherwen (York)<br>Shuting Zhai (UW)
+
|Melissa Sulprizio (Harvard)
|Science
+
|HEMCO
 +
|Simple
 
|
 
|
*Delivered to GCST (Sep 2019)
+
*[https://github.com/geoschem/HEMCO/issues/277 HEMCO issue #277]
*Originally implemented in v11-02e and updated to 12.5.0 by Will Downs (GCST)
+
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/138 Fix incorrect rates in stratosphere for HOBr + SO3/HSO3]
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Seb Eastham (MIT)
+
|Yi Wang (Iowa)<br>Jun Wang (Iowa)
|Science
+
|Emissions
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem-unittest/pull/20 Update offline lightning data through Dec 2019]
+
|Fix obspack - not working in 14.4.0
|Lee Murray (Rochester)
+
|Bob Yantosca (Harvard)
|Science
+
|Diagnostics
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]
  
 
|-valign="top"
 
|-valign="top"
|Convert GEOS-Chem species database to YAML format, includes:
+
|Cloud-J v8.0 including UV H2O absorption
*[https://github.com/geoschem/geos-chem/issues/110 Defining all species properties in the species database, not just advected species]
+
|Lizzie Lundgren (Harvard)<br>Michael Prather (UCI)
*[https://github.com/geoschem/geos-chem/issues/216 Initializing the species database with values read from the YAML file]
+
|Photolysis
|Melissa Sulprizio (GCST)<br>Bob Yantosca (GCST)
+
|Medium
|Structural
+
 
|
 
|
 +
*[https://github.com/geoschem/Cloud-J/issues/12 Cloud-J issue #12]
 +
*[https://datadryad.org/stash/dataset/doi:10.7280/D1Q398 Dataset]
 +
*[https://www.science.org/doi/10.1126/science.adn0415 Prather and Zhu (2024)]
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/284 Remove hard-coded <tt>State_Grid%MaxTropLev</tt> and <tt>State_Grid%MaxStratLev</tt>]
+
|Make GC-Classic bit-for-bit reproducible upon restart
|Melissa Sulprizio (GCST)
+
|Lizzie Lundgren (Harvard)
|Structural
+
|GC-Classic
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/HEMCO/issues/18 HEMCO issue #18]
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/232 Update GEOS-Chem core to apply masking and scaling to HEMCO inputs]
+
|Capture all trop and PBL height changes in budget diagnostics
|Lizzie Lundgren (GCST)
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Structural
+
|Diagnostics
 +
|Medium
 
|
 
|
*Will introduce numerical noise differences due to precision change
+
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 +
 
 +
|}
 +
 
 +
== 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
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Ease of implementation
 +
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Updates that WILL NOT AFFECT the full-chemistry simulation
+
|Retire CH4, CO2, tagCO simulations in favor of carbon simulation
 +
|Melissa Sulprizio (Harvard)
 +
|Carbon gases
 +
|Simple
 +
|
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/2387 geos-chem issue #2387]
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/270 Reduction of memory for HISTORY diagnostics with a species dimension]
+
|New version of CEDS at 0.1 deg
|Bob Yantosca (GCST)
+
|Dandan Zhang (WashU)
|Structural
+
|Emissions
 +
|Simple
 +
|Delivered June 2024
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/251 Disable FlexGrid checks to allow for running with any horizontal or vertical grid]
+
|Chemistry for RCOOH, updated monoterpenes, new PNs and ANs
|Melissa Sulprizio (GCST)
+
|Katie Travis (NASA)<br>Kelvin Bates (CU Boulder)
|Bug fix
+
|GC-Classic
 +
|Simple
 +
|Delivered June 2024
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/2318 geos-chem PR #2318]
 +
 +
|-valign="top"
 +
|Use USTAR read from GEOS instead of calculating from U10M and V10M
 +
|Yuanjian Zhang (WashU)
 +
|Emissions
 +
|Simple
 +
|Delivered June 2024
 +
|
 +
*[https://github.com/geoschem/HEMCO/pull/279 HEMCO PR #279]
 +
*NOTE: Mass tuning factors must be recomputed for each met field & resolution (GCClassic)
 +
 +
|-valign="top"
 +
|Correct the issue that injection height has been artifically decreased by HEMCO
 +
|Yuanjian Zhang (WashU)
 +
|Emissions
 +
|Simple
 +
|Delivered June 2024
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/279 geos-chem PR #2358]
 +
 +
|-valign="top"
 +
|PPN photolysis
 +
|Bex Horner (UCL)
 +
|Chemistry
 +
|Medium
 +
|Delivered June 2024
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2371 geos-chem PR #2371]
 +
*[https://doi.org/10.5194/egusphere-2024-1541 Horner et al. (2024)]
 +
*Need to update Cloud-J input files accordingly
  
 
|}
 
|}
  
=== 13.0.0 ===
+
== 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  
 
|-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 and References
+
!width="100px"|Delivery status
 +
!width="300px"|Notes and Refereneces
 +
 
  
 
|-valign="top"
 
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Updates that will NOT 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"
|Retire the GNU Make build system in both GEOS-Chem Classic and GCHP and replace with CMake
+
|Update UCX to include gravitational settling of aerosol species beyond just BCPI
|Liam Bindle (WashU)<br>GCST
+
|Conor Barker (UCL)<br>Eloise Marais (UCL)
|Structural
+
|Aerosols
 +
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|[https://github.com/geoschem/geos-chem/issues/283 Retire the GEOS-Chem Unit Tester repository and move GEOS-Chem run directory creation to the GEOS-Chem source code repository]
+
|Comment back in Ca, Mg, and K cations in aerosol thermo (HETP)
|Melissa Sulprizio (GCST)
+
|Becky Alexander (UW)
|Structural
+
|Aerosols
 +
|Not delivered
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/2391 geos-chem issue #2391]
  
 
|-valign="top"
 
|-valign="top"
|Use GEOS-Chem and HEMCO as separate git submodules inside a new [https://github.com/geoschem/geos-chem-classic GEOS-Chem Classic wrapper repository]
+
|Seasalt aerosol from sea ice leads (2002-2011)
|Lizzie Lundgren (GCST)
+
|Hannah Horrowitz (UIUC)
|Structural
+
|Aerosols
 +
|Not delivered
 
|
 
|
 +
*Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
  
 
|-valign="top"
 
|-valign="top"
|Updates to HEMCO for compatibility with CESM
+
|Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.)
|Haipeng Lin (Harvard)
+
|Katie Travis (NASA)<br>Kelvin Bates (CU Boulder)
|Structural
+
|Emissions
 +
|Not delivered
 
|
 
|
*ongoing
+
*[https://github.com/geoschem/geos-chem/issues/2390 geos-chem issue #2390]
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Features only affecting GCHP:
+
|Global organic N dep from various emissions; nitrate aromatics updates
 +
|May Fu (SUSTech)
 +
|Chemistry +<br>Deposition
 +
|Not delivered
 +
|
  
 
|-valign="top"
 
|-valign="top"
|Retire the existing GCHP repository and replace with a new wrapper repository that uses ESMF as an external library and integrates GEOS-Chem and NASA/GMAO GEOS-ESM git repositories as git submodules
+
|Dry deposition to F90 to improve readability
|Lizzie Lundgren (GCST)
+
|Chris Holmes (FSU)
|Structural
+
|Dry Deposition
 +
|Not delivered
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/2389 geos-chem issue #2389]
  
 
|-valign="top"
 
|-valign="top"
|Separate HEMCO from GEOS-Chem to use as an ESMF gridded component in GCHP
+
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
|Lizzie Lundgren (GCST)
+
|Joey Lam  (CUHK)<br>Amos Tai (CUHK)
|Structural
+
|Dry deposition
 +
|Delivered<br>Feb 2021
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
|Enable a stretched grid capability in GCHP to run global simulations at regional high resolution
+
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
|Liam Bindle (WashU)
+
|Chris Holmes (FSU)
|Structural
+
|Emissions
 +
|Not delivered
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/2388 geos-chem issue #2388]
  
 
|-valign="top"
 
|-valign="top"
|Updates for compatibility with MAPL 2.1.
+
|China agriculture NH3 emissions
|Lizzie Lundgren (GCST)<br>Liam Bindle (WashU)
+
|Amos Tai (CUHK)
|Structural
+
|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
 +
|
 +
*Data involves many files- need to think about temporal frequency
 +
 
 +
|-valign="top"
 +
|Australian Hg emissions (2000-2019)
 +
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
 +
|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
 +
|
 +
 
 +
|-valign="top"
 +
|Archived TCR-2 OH fields for carbon simulations
 +
|Kazu Miyazaki (JPL)
 +
|Input data
 +
|Not delivered
 
|
 
|
This update fixes the remaining outstanding GCHP issues open since 12.5:
+
*This will be the default OH, but users will have the option of selecting other OH fields
*[https://github.com/geoschem/gchp/issues/32 memory leak]
+
*[https://github.com/geoschem/gchp/issues/33 input resolution limitation]
+
  
 
|}
 
|}
  
== 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
  
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
|-bgcolor="#CCCCCC"
+
|Dust non-sphericity impacts on optical properties
!width="500px"|Feature
+
|Inderjeet Singh (WashU)
!width="200px"|Submitted by
+
|Aerosols
!width="100px"|Type
+
|
!width="300px"|Notes
+
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
+
|Fixes to stratospheric aerosol settling
 +
|Connor Barker (UCL)<br>Eloise Marais (UCL)
 +
|Aerosols
 +
|
  
 
|-valign="top"
 
|-valign="top"
|Improved wet scavenging (Luo et al., 2020)
+
|DMS chemistry in v14
|Gan Luo (Albany)<br>Fanqun Yu (Albany)
+
|Linia Tashmim (UCR)<br>Will Porter (UCR)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Implement H2 chemistry in UCX
+
|KPP standalone + 3D Interface
|Chris Holmes (FSU)
+
|Obin Sturm (USC)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Joint CO, CO2, CH4 simulation
+
|NO2+OH+H2O kinetics
|Beata Bukosa (Wollongong)
+
|Mat Evans (York)
|Science
+
|Chemistry
 
|
 
|
*Delivered to GCST (Jun 2019)
 
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Emissions and surface fluxes updates
+
|LSODES solver in KPP for faster kinetics
 +
|Haipeng Lin (Harvard)
 +
|Chemistry
 +
|
  
 
|-valign="top"
 
|-valign="top"
|ODIAC fossil fuel emissions for CO2 simulations
+
|Load balancing in chemistry solver (GCHP)
|Jenny Fisher (UOW)<br>Yi Cao (UOW)
+
|Zhouran Sun (WashU)
|Science
+
|Chemistry +<br>Performance
 
|
 
|
*Delivered to GCST (Jan 2020)
 
  
|-valign="top
+
|-valign="top"
|Updated Streets Hg emissions
+
|Active chemistry in mesosphere for both GCHP and GCClassic
|Colin Thackray (Harvard)
+
|Helena McDonald (MIT)<br>Sebastian Eastham (ICL)
|Science
+
|Chemistry
 
|
 
|
  
|-valign="top
+
|-valign="top"
|Updated EDGAR 4.3 Hg emissions
+
|Updated aromatic oxidation
|Amanda Giang (UBC)
+
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Offline CLM Harmonization
+
|MCO3 uptake by cloud forming MP; leading to lower PAN
|Anthony Wong (BU)<br>Jeff Geddes (BU)
+
|Laura Yang (Harvard)
|Science
+
|Chemistry
 
|
 
|
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
+
|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"
 
|-valign="top"
|Arctic marine SOA
+
|Documentation for adding additional aerosol species
|Betty Croft (Dalhousie)
+
|Connor Barker (UCL)
|Science
+
|Documentation
 
|
 
|
*Details on wiki only, not in standard code
 
  
|}
+
|-valign="top"
 +
|Column diagnostics
 +
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
 +
|Diagnostics
 +
|
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:38, 14 May 2019 (UTC)
+
|-valign="top"
 +
|TOMAS rate diagnostics -- improve performance
 +
|Betty Croft (WashU/Dal)
 +
|Diagnostics +<br>Performance
 +
|
  
=== Almost there (< 6 months) ===
+
|-valign="top"
 +
|Archive gamma values from heterogeneous chemistry
 +
|Bob Yantosca (Harvard)
 +
|Diagnostics
 +
|
  
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
|- bgcolor="#cccccc"
+
|RRTMG Documentation
!width="500px"|Item
+
|GCST
!width="200px"|Author(s)
+
|Documentation
!width="100px"|Type
+
|
!width="300px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
|[https://www.geosci-model-dev.net/12/111/2019/gmd-12-111-2019.pdf Aromatic VOC chemistry]
+
|Canopy Physics Model
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
+
|Sam Silva (MIT)
|Science
+
|Dry Deposition
 
|
 
|
 +
*Available at https://zenodo.org/records/3614062#.XzvrH5NKjOR (GEOS-Chem 12.3.0)
  
 
|-valign="top"
 
|-valign="top"
|C2H4 and C2H2 chemistry
+
|Dry deposition diagnostics by land cover
|Kelvin Bates (Harvard)<br>Ke Li (Harvard)
+
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Science
+
|Dry Deposition
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Diagnostic to archive XCO2, XCO, and XCH4
+
|Dry deposition process diagnostics
|Dylan Jones (Toronto)
+
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
|Science
+
|Dry Deposition
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
+
|Biomass burning for TOMAS
|Kazu Miyazaki (JPL)
+
|Nicole June (CSU)
|Science
+
|Emissions +<br>Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Evaluate the impact on the tropsophere of using the family approach for transport in the stratosphere
+
|Historic biomass burning (1750-2010)
|Christoph Keller (NASA/GMAO)  
+
|Pengfei Liu (Georgia Tech)
|Science
+
|Emissions
 
|
 
|
*Important when [[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|extending UCX into the mesosphere]]
 
  
 
|-valign="top"
 
|-valign="top"
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
+
|Rice methane emissions
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
+
|Zichong Cheng (Harvard)
|Science
+
|Emissions+<br>Carbon simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Examine differences in the lightning NOx schemes in GEOS-Chem and GMI
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Christoph Keller (NASA/GMAO)<br>Lee Murray (Rochester)
+
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|HMS chemistry
+
|New prior CO2 biospheric fluxes from CMS-FLUX and GMAO
|Jonathan Moch (Harvard)
+
|Kevin Bowman (JPL)<br>Lesley Ott (GMAO)
|Science
+
|Emissions
 
|
 
|
 +
*GMAO can provide high-resolution  fluxes (as high as 12 km)
  
 
|-valign="top"
 
|-valign="top"
|Heterogeneous sulfate production
+
|Snowpack Br2 emission
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Chris Holmes (FSU)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|BrC aging
+
|EDGAR v8.1_toxHg emissions for 1970-2022
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
+
|Eric Roy (MIT)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Retire carbon-based units for VOCs
+
|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: Add run with all diagnostics turned on
 
|GCST
 
|GCST
|Science
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Update of US emissions to NEI16
+
|Integration testing: Reinstate TOMAS40
|Barron Henderson (EPA)
+
|Betty Croft (Dalhousie/WashU)
|Science
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updated surface ocean dissolved Hg0 from MITgcm
+
|Strat-adjusted RF in GCC and GCHP
|Yanxu Zhang (Nanjing)
+
|Connor Barker (UCL)<br>Eloise Marais (UCL)
|Science
+
|Radiation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|One-Way Coupling w/ GISS ModelE3
+
|Continue cleanup of C-preprocessor switches
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
+
|Lizzie Lundgren (Harvard)
 
|Structural
 
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Shared Socioeconomic Pathways Emission Inventories
+
|Updates to Luo deposition scheme
|Hong Liao (NUIST)
+
|Gan Luo (Albany)
|Science
+
|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
 
|
 
|
  
 
|}
 
|}
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:38, 14 May 2019 (UTC)
+
== Over the horizon (6-12 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"
|Update OCS simulation in the standard code
+
|ML algorithms for bulk aerosol
|Kevin Bowman (JPL)
+
|Arshad Nair (Albany)<br>Fangqun Yu (Albany)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Examine what are the differences in the PSC implementation in GEOS-Chem and GMI and assess the implications of these differences for startospheric ozone
+
|Heterogeneous sulfate chemistry
|Susan Strahan (Goddard)<br>Sebastian Eastham (MIT)
+
|Katie Travis (NASA)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Rediagnosis of RAS convection in GEOS-Chem
+
|H2 as an active species
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
+
|Seb Eastham (ICL)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|New schedule for tracer transport benchmarks (FP change, scavenging change, or major release)
+
|HCN, acetonitrile as fire tracers
|Andrea Molod (NASA/GMAO)
+
|Kevin Bates (CU Boulder)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updated cloud water pH
+
|Implement ethane in carbon simulation
|Viral Shah (Harvard)<br>Jonathan Moch (Harvard)
+
|Yuzhong Zhang (Westlake)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Methylethylketone chemistry
+
|Mesospheric source of CO
|Jared Brewer (CSU)
+
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Add sulfate dependence to SOA yield from isoprene in simple SOA
+
|Drought-stress algorithm
|Elo&iuml;se Marais (Leicester)
+
|Wei Li (Houston)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Trace metal simulation
+
|Physically-based resolution correction for BVOC emissions using MEGAN
|Junwei Xu (Dalhousie)
+
|May Fu (SUSTech)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg gas-phase photo-reduction
+
|Canadian forest fire prediction system (Canada government forecast model)
|Colin Thackray (Harvard)
+
|Robin Stevens (Montreal)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
+
|Cooking emissions (not biofuel)
|Amos Tai (CUHK)
+
|Kelvin Bates (CU Boulder)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Canopy Physics Model
+
|State-specific annual emissions scaling factors (US) (1990-2021)
|Sam Silva (MIT)
+
|Ishir Dutta (MIT)
|Structural
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Landcover/Fire Emissions Offline LPJlmfire
+
|GISS-GC online
|Loretta Mickley (Harvard)
+
|Lee Murray (Rochester)
|Science
+
|External model
 
|
 
|
  
|}
+
|-valign="top"
 +
|Hybrid MPI-OpenMP in GCHP
 +
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>Lizzie Lundgren (Harvard)
 +
|GCHP
 +
|
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:38, 14 May 2019 (UTC)
+
|-valign="top"
 +
|MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files
 +
|Lizzie Lundgren (Harvard)
 +
|GCHP
 +
|
  
=== Longer term (12-24 months)===
+
|-valign="top"
 +
|MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files
 +
|Lizzie Lundgren (Harvard)
 +
|GCHP
 +
|
  
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
|- bgcolor="#cccccc"
+
|MAPL3: Wildcards in GCHP History
!width="500px"|Item
+
|Lizzie Lundgren (Harvard)
!width="200px"|Author(s)
+
|GCHP
!width="100px"|Type
+
|
!width="300px"|Notes
+
  
 
|-valign="top"
 
|-valign="top"
|Implement isotope simulation for CO and CH4 in GCHP
+
|MAPL3: Output emissions with positive up convention in GCHP
|Lee Murray (Rochester)
+
|Lizzie Lundgren (Harvard)
|Science
+
|GCHP
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Migrate LETFK DA scheme to GCHP
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Kazu Miyazaki (JPL)
+
|Bob Yantosca (Harvard)
|Science
+
|Performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Super fast chemistry scheme
+
|Photophysical oxidation of aldehydes
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
+
|Paulo Sebastianelli (Wollongong)<br>Jenny Fisher (Wollongong)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Add non-volatile cations to ISORROPIA
+
|DMS updates
|Becky Alexander (UW)
+
|Will Porter (UCR)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Update Europe emissions to EMEP 2016
+
|Furans emission and chemistry
|Eloise Marais (Leicester)
+
|Lixu Jin (Montana)<br>Lu Hu (Montana)
|Science
+
|Chemistry + <br>Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|MEGAN3
+
|Cl2 prodcution from Fe aerosol
|Sam Silva (MIT)<br>Jen Kaiser (GIT)<br>Yuxuan Wang (UH)
+
|Qianjie Chen (HK Poly)<br>Becky Alexander (UW)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|DMS oxidation scheme updating
+
|VCP emissions
|Becky Alexander (UW)<br>Qianjie Chen (UW)
+
|Kevin Bates (CU Boulder)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Streamlining of specialty simulations through HEMCO and KPP
+
|Bidirectional land-atmosphere exchange for Hg
|GCST<br>Chris Holmes (FSU)<br>Colin Thackray for POPs (Harvard)<br>Peter Ivatt (York) for PAH
+
|Yuying Cui (MIT/Tsinghua)
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg in WRF-GC
+
|OH covariances for inversions
|Yanxu Zhang (Nanjing)
+
|Elise Penn (Harvard)
|Science
+
|Inversions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg with blowing snow
+
|CESM2-GC offline
|Yanxu Xhang (Nanjing)
+
|Seb Eastham (ICL)<br>Lee Murray (Rochester)
|Science
+
|Met fields
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updated treatment of Hg in ocean
+
|Re-binning of off-line sea salt and dust for TOMAS
|Chris Holmes (FSU)
+
|Betty Croft (Dalhousie)
|Science
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|GTMM updates
+
|TOMAS nucleation updates
|Ben Geyman (Harvard)
+
|Sam O'Donnell (CSU)
|Science
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Complex / multicomplex variables
+
|Stratospheric aerosol APM
|Shannon Capps (Drexel)
+
|Fangqun Yu (SUNY Albany)
|Structural
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Build KPP when you compile GC
+
|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
 +
|
 +
 
 +
|-valign="top"
 +
|Integration testing: Add across end of year run
 
|GCST
 
|GCST
 +
|Quality Assurance
 +
|
 +
 +
|-valign="top"
 +
|Integration testing: Add GEOS-IT
 +
|Yuanjian Zhang (WashU)
 +
|Quality Assurance
 +
|
 +
 +
|-valign="top"
 +
|Separate mixing, emissions, and drydep
 +
|Yuanjian Zhang (WashU)
 
|Structural
 
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Restructure source code folders
+
|Intel IFX compiler
|GCST
+
|Bob Yantosca (Harvard)
 
|Structural
 
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Archived CMIP6 Met Products for GEOS-Chem Input
+
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
|Lee Murray (Rochester)
+
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
|Science
+
|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
 
|
 
|
  
 
|}
 
|}
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 16:38, 14 May 2019 (UTC)
+
== 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.
  
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''
+
{| 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"
 +
|Modal aerosol model (MAM7) in GCHP
 +
|Shreya Sharma (MIT)
 +
|Aerosols
 +
|
 +
 
 +
|-valign="top"
 +
|Online OCIM ocean biogeochemistry
 +
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Perchlorate chemistry
 +
|Yuk Chun Chan (UW)
 +
|Chemistry
 +
|
 +
 
 +
|-valign="top"
 +
|Non-stomatal dry deposition (2-layer canopy model)
 +
|Michael Vermeuel (Purdue)
 +
|Dry Deposition
 +
|
 +
 
 +
|-valign="top"
 +
|Continental chloride particle emissions (salty dust, road salt)
 +
|Jessica Haskins (Utah)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
 +
|Ruochong (Tshingua)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Lightning NOx production rates
 +
|Bex Horner (UCL)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|HFO and CF3CHO
 +
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
 +
|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"
 +
|GFED5 biomass burning
 +
|Eric Roy (MIT)
 +
|Emissions
 +
|
 +
 
 +
|-valign="top"
 +
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
 +
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Soil Hg emissions 2010-2020
 +
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Air-sea exchange parameterization
 +
|Eric Roy (MIT)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Soil Hg emissions parameterization
 +
|Ari Feinberg (IQF-CSIC)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Sea salt uptake of GOM
 +
|Eric Roy (MIT)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Photoreduction rate constant
 +
|Eric Roy (MIT)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|New observations (2010-2020) in standardized Hg benchmark for intercomparison
 +
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Hg simulation in GCHP
 +
|Eric Roy (MIT)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
 +
|Hannah Horowitz (UIUC)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|Possibly updating Hg oxidation chemistry based on Utah field campaigns
 +
|Jessica Haskins (Utah)
 +
|Hg simulation
 +
|
 +
 
 +
|-valign="top"
 +
|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
 +
|
 +
 
 +
|-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
 +
|
 +
 
 +
|-valign="top"
 +
|Stretched-grid plotting in GCPy
 +
|Killian Murphy (York)
 +
|Tools
 +
|
 +
 
 +
|-valign="top"
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|Model inter-comparison of transport (GEOS, GCHP, GCClassic)
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|Lizzie Lundgren (Harvard), Emma Knowland (NASA)
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|Transport
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|-valign="top"
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|Comparing mass fluxes in GCHP vs. traditional lat/lon wind
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|Yuanjian Zhang (WashU), Seb Eastham (ICL)
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|Transport
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|}

Latest revision as of 11:52, 19 July 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
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry Simple
Fix pressure handling in HEMCO standalone Melissa Sulprizio (Harvard) HEMCO Simple
New soil NOx parameterization Yi Wang (Iowa)
Jun Wang (Iowa)
Emissions Medium
Fix obspack - not working in 14.4.0 Bob Yantosca (Harvard) Diagnostics Medium
Cloud-J v8.0 including UV H2O absorption Lizzie Lundgren (Harvard)
Michael Prather (UCI)
Photolysis Medium
Make GC-Classic bit-for-bit reproducible upon restart 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
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple Delivered June 2024
Chemistry for RCOOH, updated monoterpenes, new PNs and ANs Katie Travis (NASA)
Kelvin Bates (CU Boulder)
GC-Classic Simple Delivered June 2024
Use USTAR read from GEOS instead of calculating from U10M and V10M Yuanjian Zhang (WashU) Emissions Simple Delivered June 2024
  • HEMCO PR #279
  • NOTE: Mass tuning factors must be recomputed for each met field & resolution (GCClassic)
Correct the issue that injection height has been artifically decreased by HEMCO Yuanjian Zhang (WashU) Emissions Simple Delivered June 2024
PPN photolysis Bex Horner (UCL) Chemistry Medium Delivered June 2024

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
Comment back in Ca, Mg, and K cations in aerosol thermo (HETP) Becky Alexander (UW) 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)
Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.) Katie Travis (NASA)
Kelvin Bates (CU Boulder)
Emissions Not delivered
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
Dust non-sphericity impacts on optical properties Inderjeet Singh (WashU) Aerosols
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: Add run with all diagnostics turned on GCST Quality Assurance
Integration testing: Reinstate TOMAS40 Betty Croft (Dalhousie/WashU) Quality Assurance
Strat-adjusted RF in GCC and GCHP Connor Barker (UCL)
Eloise Marais (UCL)
Radiation
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