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

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On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the Working Groups and the Steering Committee.
+
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''']].
  
−
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.
+
== Merged and awaiting release ==
  
−
== Priorities assigned to upcoming GEOS-Chem versions ==
+
See the links below for items merged and awaiting release.
  
−
=== 12.2.0 ===
+
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="300px"|Mergeable at any time
 +
!width="200px"|Version in development
  
−
<span style="color:darkorange">'''This version is currently in development. See [[GEOS-Chem_12#12.2.0|the ''GEOS-Chem 12'' wiki page]] for details.'''</span>
+
|-valign="top"
 +
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
 +
|align="center"|'''[[GEOS-Chem 14.5.0]]'''
 +
 
 +
|}
  
−
=== 12.3.0 ===
+
== Feature integration in progress ==
  
−
The items listed below are slated to be included in GEOS-Chem 12.3.0. This is a feature release which will be validated with a 1-month benchmark simulation.
+
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"|Status
+
!width="100px"|Ease of implementation
 +
!width="300px"|Notes and References
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Features affecting 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"
−
|[[ISORROPIA_II#Investigating_persistent_noise_observed_in_ISORROPIA_output|Update ISORROPIA from v2.0 to v2.2, in order to remove persistent noise in output]]
+
|Fix pressure handling in HEMCO standalone
−
|Seb Eastham (Harvard)
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|HEMCO
 +
|Simple
 
|
 
|
−
*Delivered to GCST (May 2017)
+
*[https://github.com/geoschem/HEMCO/issues/277 HEMCO issue #277]
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Discussion_of_LAI_Data_Sources|Update MODIS LAI fields for 2005-2016 using Yuan et al. (2011) ]]
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|Jenny Fisher (Wollongong) <br>Barron Henderson (US EPA)
+
|Yi Wang (Iowa)<br>Jun Wang (Iowa)
−
|Science
+
|Emissions
 +
|Medium
 
|
 
|
−
*Will require reworking of LAI regridding in GEOS-Chem Classic and pre-processing land map data
+
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Updated_PFT_file|Updated PFT file for MEGAN]]
+
|Fix obspack - not working in 14.4.0
−
|Jenny Fisher (Wollongong)<br>Dylan Millet (UMN)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Diagnostics
 +
|Medium
 
|
 
|
−
*Delivered to GCST (May 2018)
+
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]
  
 
|-valign="top"
 
|-valign="top"
−
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
+
|Cloud-J v8.0 including UV H2O absorption
−
|Sebastian Eastham (MIT)
+
|Lizzie Lundgren (Harvard)<br>Michael Prather (UCI)
−
|Science
+
|Photolysis
 +
|Medium
 
|
 
|
 +
*[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"
−
|[[Volcanic_SO2_emissions_from_Aerocom#OMI-based_volcanic_emissions|OMI-based Volcanic emissions 2005-2012]]
+
|Make GC-Classic bit-for-bit reproducible upon restart
−
|Cui Ge (U. Iowa)<br>Jun Wang (U. Iowa)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GC-Classic
 +
|Medium
 
|
 
|
−
*Working with developers to obtain alternate data for Oct-Dec 2012.
+
*[https://github.com/geoschem/HEMCO/issues/18 HEMCO issue #18]
 +
 
 +
|-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]
  
 
|}
 
|}
  
−
=== 12.4.0 ===
+
== Prioritized and in the queue ==
  
−
The items listed below are slated to be included in GEOS-Chem 12.4.0.  This is a feature release which will be validated with a 1-month benchmark simulation and a 1-year benchmark simulation.
+
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"|Status
+
!width="100px"|Ease of implementation
 +
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Features affecting 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"
−
|Grid-independent dust emissions (hourly)
+
|New version of CEDS at 0.1 deg
−
|David Ridley (CARB, formerly MIT)
+
|Dandan Zhang (WashU)
−
|Science
+
|Emissions
 +
|Simple
 +
|Delivered June 2024
 
|
 
|
−
*Source code to generate data delivered to GCST (Feb 2018)
+
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent lightning NOx emissions (3-hourly)
+
|Chemistry for RCOOH, updated monoterpenes, new PNs and ANs
−
|Lee Murray (Rochester)
+
|Katie Travis (NASA)<br>Kelvin Bates (CU Boulder)
−
|Science
+
|GC-Classic
 +
|Simple
 +
|Delivered June 2024
 
|
 
|
−
*Data delivered to GCST (Dec 2018)
+
*[https://github.com/geoschem/geos-chem/pull/2318 geos-chem PR #2318]
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent biogenic emissions (hourly)
+
|Use USTAR read from GEOS instead of calculating from U10M and V10M
−
|Jintai Lin (PKU)
+
|Yuanjian Zhang (WashU)
−
|Science
+
|Emissions
 +
|Simple
 +
|Delivered June 2024
 
|
 
|
−
*Data has not yet been transferred to GCST
+
*[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"
 
|-valign="top"
−
|Grid-independent sea salt emissions (hourly)
+
|Correct the issue that injection height has been artifically decreased by HEMCO
−
|Jintai Lin (PKU)
+
|Yuanjian Zhang (WashU)
−
|Science
+
|Emissions
 +
|Simple
 +
|Delivered June 2024
 
|
 
|
−
*Data has not yet been transferred to GCST
+
*[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
  
 +
|}
  
−
== Priorities not yet assigned to a particular version ==
+
== Ready to go in ==
−
 
+
−
The following items have been identified as priorities for GEOS-Chem, but have not yet been assigned to a particular GEOS-Chem version.
+
  
−
=== 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"|Status
+
!width="100px"|Delivery status
 +
!width="300px"|Notes and Refereneces
  
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.geosci-model-dev-discuss.net/gmd-2018-196/ Aromatic chemistry with the SAPRC-11 mechanism]
+
|Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol
−
|Yingying Yan (China University of Geosciences)
+
|Camilo Serrano (McGill)<br>Andreas Zuend (McGill)
−
|Science
+
|Aerosols
 +
|Not delivered
 
|
 
|
−
*Implemented in GEOS-Chem v9-02
+
*[https://github.com/geoschem/geos-chem/issues/2392 geos-chem issue #2392]
  
 
|-valign="top"
 
|-valign="top"
−
|[https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JD029133 N2O5 hydrolysis updates]
+
|Update UCX to include gravitational settling of aerosol species beyond just BCPI
−
|Viral Shah (UW)<br>Lyatt Jaegle (UW)<br>Chris Holmes (FSU)  
+
|Conor Barker (UCL)<br>Eloise Marais (UCL)
−
|Science
+
|Aerosols
 +
|Not delivered
 
|
 
|
−
*Delivered to GCST (Dec 2018)
 
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Emissions and surface fluxes updates
+
|Comment back in Ca, Mg, and K cations in aerosol thermo (HETP)
 +
|Becky Alexander (UW)
 +
|Aerosols
 +
|Not delivered
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/2391 geos-chem issue #2391]
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon bottom up fluxes: anthro, ocean, land
+
|Seasalt aerosol from sea ice leads (2002-2011)
−
|Kevin Bowman (JPL)
+
|Hannah Horrowitz (UIUC)
−
|Science
+
|Aerosols
−
|Kevin Bowman wrote:
+
|Not delivered
−
*This is a a [https://disc.gsfc.nasa.gov/information/news/59e0d52f7cf032426b15c94f/carbon-monitoring-system-cms-carbon-flux-data-sets-released list of data archived from CMS-Flux] that provides bottom up fluxes.  These have been generated for the years 2010-2012 and are ready to go now.  The key datasets are:
+
|
−
**CMSFluxFire
+
*Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
−
**CMSFluxFossilfuel
+
−
**CMSFluxNEE
+
−
**CMSFluxOcean
+
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
+
|Fire and anthropogenic emissions not currently turned on (monoterpenes, 1-butadiene etc.)
 +
|Katie Travis (NASA)<br>Kelvin Bates (CU Boulder)
 +
|Emissions
 +
|Not delivered
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/2390 geos-chem issue #2390]
  
 
|-valign="top"
 
|-valign="top"
−
|Wet deposition parameterizations: pH dependency, Henry's law coefficients, etc.
+
|Global organic N dep from various emissions; nitrate aromatics updates
−
|Sarah Safieddine (MIT)<br>GCST
+
|May Fu (SUSTech)
−
|Science
+
|Chemistry +<br>Deposition
 +
|Not delivered
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt aerosol alkalinity
+
|Dry deposition to F90 to improve readability
−
|Qianjie Chen (UW)<br>Becky Alexander (UW)<br>Xuan Wang (Harvard)
+
|Chris Holmes (FSU)
−
|Science
+
|Dry Deposition
 +
|Not delivered
 
|
 
|
−
*UW version delivered to GCST (Nov 2017)
+
*[https://github.com/geoschem/geos-chem/issues/2389 geos-chem issue #2389]
  
 
|-valign="top"
 
|-valign="top"
−
|VBS SOA option
+
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
−
|Rokjin Park (SNU)
+
|Joey Lam  (CUHK)<br>Amos Tai (CUHK)
−
|Science
+
|Dry deposition
 +
|Delivered<br>Feb 2021
 
|
 
|
−
*Code has been implemented in the ancient v9-01-02 version. 
+
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
−
*Bringing this up to the current SOA model (simple SOA, complex SOA) will likely involve significant effort.
+
−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|AMAP/UNEP 2035 for Hg simulation
+
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
−
|Helene Angot (MIT)
+
|Chris Holmes (FSU)
−
|Science
+
|Emissions
 +
|Not delivered
 
|
 
|
−
*Data is available, but has not been transferred to GCST yet
+
*[https://github.com/geoschem/geos-chem/issues/2388 geos-chem issue #2388]
  
 
|-valign="top"
 
|-valign="top"
−
|Oxidant fields from v10 for 2006-2012
+
|China agriculture NH3 emissions
−
*3D chemical source for CO2, CO
+
|Amos Tai (CUHK)
−
*OH for tagged CO & CH4
+
|Emissions
−
|Dylan Jones (UofT)
+
|Not delivered
−
|Science
+
 
|
 
|
−
*Will make data files available on ftp site
 
  
 
|-valign="top"
 
|-valign="top"
−
|Africa nested-grid for GEOS-FP and MERRA-2
+
|T-dependent anthropogenic VOCs
−
|Eloise Marais (U. Birmingham)
+
|May Fu (SUSTech)
−
|Science
+
|Emissions
 +
|Not delivered
 
|
 
|
−
*Delivered to GCST (Dec 2017)
+
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.
−
*Could be implemented with Jiawei Zhuang's FlexGrid
+
  
 
|-valign="top"
 
|-valign="top"
−
|West Africa nested-grid for GEOS-FP
+
|New source functions for transport tracers beryllium-7 and beryllium-10
−
|Mat Evans (York)<br>Eleanor Morris (York)
+
|Minjie Zheng (ETH)
−
|Science
+
|Emissions
 +
|Delivered<br>June 2024
 
|
 
|
−
*Could be implemented with Jiawei Zhuang's FlexGrid
+
*Available at https://zenodo.org/records/8372652
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate simulation]]
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|Becky Alexander (UW)
+
|Yang Li (Baylor U)<br>Loretta Mickley (Harvard)
−
|Science
+
|Emissions
 +
|Delivered
 
|
 
|
 +
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
−
|Arsenic simulation
+
|Australian Hg emissions (2000-2019)
−
|Shiliang Wu (MT)
+
|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
−
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Update to redistribution of mass in transport
+
|Hg geogenic emissions (volcanic, rock weathering)
−
|Seb Eastham (MIT)
+
|Eric Roy (MIT)
−
|Science
+
|Emissions
 +
|Not delivered
 
|
 
|
−
*Stop gap solution pending use of mass fluxes instead of winds in advection
+
*[https://github.com/geoschem/geos-chem/issues/2361 geos-chem #2361]
−
 
+
*[https://gmd.copernicus.org/preprints/gmd-2024-65/ Dastoor et al. (2024)]
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Benchmark of stratospheric simulation
+
|Hg biomass burning - FINN2.5 & GFED4
−
|Dylan Jones (U. Toronto)
+
|Eric Roy (MIT)
−
|Benchmarking
+
|Emissions
 +
|Not delivered
 
|
 
|
−
*1-yr benchmarks for GEOS-Chem v11-01d and later include comparisons with OSIRIS O3
+
*[https://github.com/geoschem/geos-chem/issues/2361 geos-chem #2361]
−
*Waiting on OSIRIS NO2 data
+
*[https://gmd.copernicus.org/preprints/gmd-2024-65/ Dastoor et al. (2024)]
−
*Waiting on comparisons with ACE-FTS data
+
  
 
|-valign="top"
 
|-valign="top"
−
|Add total column O3 to benchmarks
+
|BCC-GC online
−
|Chris Holmes (FSU)<br>[[GCST]]
+
|Lin Zhang (PKU)
−
|Benchmarking
+
|External Model
 +
|Not delivered
 
|
 
|
−
*Deferred until GEOS-Chem 12
 
−
*Also note: GCST plans on migrating benchmark plotting code from IDL to Python in v11-03
 
  
 
|-valign="top"
 
|-valign="top"
−
|Further structural updates to facilitate interfacing GEOS-Chem with external models (e.g. WRF, CAM, CESM)
+
|GC-YIBS with online fire emissions
−
|[[GCST]]
+
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
−
|Structural
+
|External Model
 +
|Not delivered
 
|
 
|
−
*Ongoing
 
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
+
|GISS-GC offline (GCAP)
 +
|Lee Murray (Rochester)
 +
|GCAP
 +
|Not delivered
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archival of roughness length for temperature z0T
+
|Archived TCR-2 OH fields for carbon simulations
−
|[[GCST]]
+
|Kazu Miyazaki (JPL)
−
|Met processing
+
|Input data
 +
|Not delivered
 
|
 
|
−
*Work has not yet begun
+
*This will be the default OH, but users will have the option of selecting other OH fields
 +
 
 
|}
 
|}
  
−
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 19:04, 2 August 2018 (UTC)
+
== Almost there (< 6 months) ==
  
−
=== Almost there (< 6 months) ===
+
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
  
−
{| border=1 cellspacing=0 cellpadding=5
+
{|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"|Status
+
!width="420px"|Notes and References
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
|Dust non-sphericity impacts on optical properties
 +
|Inderjeet Singh (WashU)
 +
|Aerosols
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.geosci-model-dev-discuss.net/gmd-2017-125/ GEOS resolution & subgrid convection]
+
|Fixes to stratospheric aerosol settling
−
|Karen Yu (Harvard)
+
|Connor Barker (UCL)<br>Eloise Marais (UCL)
−
|Science
+
|Aerosols
 
|
 
|
−
*To be installed by Bob Yantosca (Harvard), tested by Tailong He (Toronto)
 
−
*Work to begin after [[GEOS-Chem 12#12.0.0|GC 12.0.0]] release
 
  
 
|-valign="top"
 
|-valign="top"
−
|Transport families in the stratosphere
+
|DMS chemistry in v14
−
|Christoph Keller (NASA GMAO)
+
|Linia Tashmim (UCR)<br>Will Porter (UCR)
−
|Science
+
|Chemistry
 
|
 
|
−
*Implemented in GEOS-GC coupled system
 
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
+
|KPP standalone + 3D Interface
 +
|Obin Sturm (USC)
 +
|Chemistry
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|H2 chemistry in UCX
+
|NO2+OH+H2O kinetics
−
|Chris Holmes (FSU)
+
|Mat Evans (York)
−
|Science
+
|Chemistry
 
|
 
|
−
*Defer until paper is submitted
 
−
*Estimate Fall 2018 or sooner
 
  
 
|-valign="top"
 
|-valign="top"
−
|Updated chlorine chemistry
+
|LSODES solver in KPP for faster kinetics
−
|Xuan Wang (Harvard)
+
|Haipeng Lin (Harvard)
−
|Science
+
|Chemistry
 
|
 
|
−
*Defer until the paper is submitted
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Chemistry_Issues#Correcting_ozone_from_the_height_of_the_lowest_model_level_to_the_surface|ND49 timeseries diagnostic for correcting ozone from the height of the lowest model level to 10m]]
+
|Load balancing in chemistry solver (GCHP)
−
|Katie Travis (MIT)
+
|Zhouran Sun (WashU)
−
|Structural
+
|Chemistry +<br>Performance
 
|
 
|
−
*Defer until the paper is submitted
 
  
 
|-valign="top"
 
|-valign="top"
−
|OH + NO2 rate update
+
|Active chemistry in mesosphere for both GCHP and GCClassic
−
|Barron Henderson (EPA)
+
|Helena McDonald (MIT)<br>Sebastian Eastham (ICL)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[Chemistry_Issues#Script_for_evaluating_carbon_balance|Script for checking N, C, etc. balance in chemistry mechanism]]
+
|Updated aromatic oxidation
−
|Barron Henderson (EPA)
+
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
−
|Software
+
|Chemistry
−
|Barron Henderson wrote:
+
|
−
*The script for checking the carbon balance exists and works. Ideally, we would move some of the structures into the KPP files to codify them instead of storing them in the script itself. This would be less than 6 months. [https://www.evernote.com/shard/s315/sh/82219b0a-0031-4f3c-a9ca-401964d3b4c5/7af8ad1c743543fa20bf91201ecab2f0 Click HERE for script]
+
  
 
|-valign="top"
 
|-valign="top"
−
|Aromatics and dicarbonyl chemistry
+
|MCO3 uptake by cloud forming MP; leading to lower PAN
−
|William Porter (MIT)<br>Tzung-May Fu (PKU)
+
|Laura Yang (Harvard)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Document chemical mechanism in KPP file
+
|Implement isotope simulation for CH4 in the carbon simulation
−
|Mat Evans (York)
+
|Lee Murray (Rochester)
−
|Structural
+
|Chemistry
 
|
 
|
 +
*Will have to change negative emissions from soil to a first-order loss process
  
 
|-valign="top"
 
|-valign="top"
−
|Diurnal variability for NH3
+
|Documentation for adding additional aerosol species
−
|Henze group
+
|Connor Barker (UCL)
−
|Science
+
|Documentation
−
|Daven Henze wrote:
+
|
−
*The FORTRAN code for implementing NH3 emissions diurnal variability is fairly straightforward.  However, it involves calculation of some quantities that depend upon met fields in the future, and we’re unsure of how to accomplish this in a robust and elegant manner. 
+
 
−
*In particular, we need to know the aerodynamic resistance and surface temperature at every emission time step over the course of a time period X, where X is the time resolution of the NH3 livestock emissions inventory being used.  This is typically monthly, but I could foresee future inventories having higher resolution, so maybe we want to consider this more generically. 
+
−
*One approach would be to pre-process this quantity at high resolution for all years, as is currently being done e.g. for dust emissions.  Another would be to add code to read in this information from met files online, but this would add some i/o to the model.
+
−
+
 
|-valign="top"
 
|-valign="top"
−
|Uptake of HNO3 onto coarse-mode sea salt
+
|Column diagnostics
−
|Prasad Kasibhatla (Duke)
+
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
−
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.atmos-chem-phys.net/18/11185/2018/ Photolysis of NITs]
+
|TOMAS rate diagnostics -- improve performance
−
|Prasad Kasibhatla (Duke)
+
|Betty Croft (WashU/Dal)
−
|Science
+
|Diagnostics +<br>Performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Update heterogeneous processes to address high bias in nitrate
+
|Archive gamma values from heterogeneous chemistry
−
|Chris Holmes (FSU)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Diagnostics
 
|
 
|
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
+
|RRTMG Documentation
 +
|GCST
 +
|Documentation
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.atmos-chem-phys-discuss.net/acp-2018-459/ Update to hygroscopic growth]
+
|Canopy Physics Model
−
|Robyn Latimer (Dalhousie)<br>Randall Martin (Dalhousie)
+
|Sam Silva (MIT)
−
|Science
+
|Dry Deposition
 
|
 
|
 +
*Available at https://zenodo.org/records/3614062#.XzvrH5NKjOR (GEOS-Chem 12.3.0)
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Emissions updates
+
|Dry deposition diagnostics by land cover
 +
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
 +
|Dry Deposition
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|EPA-derived BC/OA emissions over US (1990-2012)
+
|Dry deposition process diagnostics
−
|David Ridley (MIT)<br>Chi Li (Dalhousie)
+
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
−
|Science
+
|Dry Deposition
 
|
 
|
−
*Emissions are available but need to be formatted properly.
 
−
*Could be ready by Fall-Winter 2018, depending on D. Ridley's availability
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[FINNv1_biomass_burning_emissions|FINN biomass burning emissions for 2014-2016]]
+
|Biomass burning for TOMAS
−
|Barron Henderson (US EPA)
+
|Nicole June (CSU)
−
|Science
+
|Emissions +<br>Microphysics
 
|
 
|
−
*Pending receipt of corrected data files
 
  
 
|-valign="top"
 
|-valign="top"
−
|EPA NEI2011 Version EK
+
|Historic biomass burning (1750-2010)
−
|Zitely Tzompa-Sosa (CSU)<br>Emily Fischer (CSU)
+
|Pengfei Liu (Georgia Tech)
−
|Science
+
|Emissions
 
|
 
|
−
*Estimate Late 2018 or sooner
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
+
|Rice methane emissions
−
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
+
|Zichong Cheng (Harvard)
−
|Science
+
|Emissions+<br>Carbon simulation
 
|
 
|
−
*MASAGE data is already available.
 
−
*GCST would need assistance from the user community to prepare HEMCO configuration files such that we do not double-count agricultural NH3 from MASAGE and other inventories.  This has been the main delay.
 
−
*F. Paulot has left the GC community.
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[MASAGE_NH3_inventory#Non-agricultural_NH3_for_use_with_MASAGE|Non-agricultural NH3 for use with MASAGE]]
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
−
|Amos Tai (CUHK)
+
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
−
|Science
+
|Emissions
 
|
 
|
−
*Waiting on data
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|New prior CO2 biospheric fluxes from CMS-FLUX and GMAO
−
|Fabien Paulot (NOAA/GFDL)
+
|Kevin Bowman (JPL)<br>Lesley Ott (GMAO)
−
|Science
+
|Emissions
 
|
 
|
−
*Data files delivered to GCST (Jan 2016)
+
*GMAO can provide high-resolution  fluxes (as high as 12 km)
−
*Needs to be implemented via HEMCO, which is the primary delay
+
  
 
|-valign="top"
 
|-valign="top"
−
|Injection height for fire emissions
+
|Snowpack Br2 emission
−
|Juliet Zhu (CSU)<br>Emily Fischer (CSU)
+
|Chris Holmes (FSU)
−
|Science
+
|Emissions
 
|
 
|
−
*Code was available in pre v9-02 (HEMCO)
 
−
*Code may have been ported to v11-02a but this option was not activated
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Surface fluxes and land usage updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Land cover module: Harmonized biosphere-atmosphere exchange and implementing CLM or manual land cover change experiments
+
|EDGAR v8.1_toxHg emissions for 1970-2022
−
|Jeff Geddes (BU)
+
|Eric Roy (MIT)
−
|Science
+
|Emissions
 
|
 
|
−
*Has been added into v9-02 (pre-HEMCO)
 
−
*Bringing this up to v11 will probably need significant effort
 
−
*BU group/GCST will meet summer 2018 to discuss implementation
 
  
 
|-valign="top"
 
|-valign="top"
−
|Online O3-LAI coupling in GEOS-Chem
+
|Improve pressure handling in GCHP advection
−
|Amos Tai (CUHK)
+
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
−
|Science
+
|GCHP
 
|
 
|
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
+
|Add error trap for duplicate scale factors in HEMCO
 +
|Bob Yantosca (Harvard)
 +
|HEMCO
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|Wet scavenging in mixed-phase clouds
+
|Integration testing: Add stretched grid
−
|Bo Zhang (NIA/NASA Langley)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|Quality Assurance
 
|
 
|
−
*Defer until paper is published
 
−
*Estimate Fall 2018
 
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
+
|Integration testing: Add GCHP mass flux run
 +
|Lizzie Lundgren (Harvard)
 +
|Quality Assurance
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|Radon emission update
+
|Integration testing: Add run with all diagnostics turned on
−
|Bo Zhang (NIA/NASA Langley)
+
|GCST
−
|Science
+
|Quality Assurance
 
|
 
|
−
*Defer until paper is published
 
−
*Estimate Fall 2018
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[POPs simulation#PCB simulation|PCB simulation]]
+
|Integration testing: Reinstate TOMAS40
−
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
+
|Betty Croft (Dalhousie/WashU)
−
|Science
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|New EDGAR sectoral inventory for Hg (1970-2012)
+
|Strat-adjusted RF in GCC and GCHP
−
|Amanda Giang (MIT)
+
|Connor Barker (UCL)<br>Eloise Marais (UCL)
−
|Science
+
|Radiation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive GISS met fields from RCP scenarios for community
+
|Continue cleanup of C-preprocessor switches
−
|Lee Murray (Rochester)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
+
|Updates to Luo deposition scheme
 +
|Gan Luo (Albany)
 +
|Wet Deposition
 +
|
 +
*New version, keep as switch (not default)
  
 
|-valign="top"
 
|-valign="top"
−
|New version of MAPL
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
−
|GMAO<br>Lizzie Lundgren (GCST)
+
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
−
|Structural
+
|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.
 +
 +
{| 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"
 
|-valign="top"
−
|Flux ingestion
+
|ML algorithms for bulk aerosol
−
|Sebastian Eastham (MIT)
+
|Arshad Nair (Albany)<br>Fangqun Yu (Albany)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Use CMake to simplify GCHP build process
+
|Heterogeneous sulfate chemistry
−
|Liam Bindle (Dalhousie)
+
|Katie Travis (NASA)
−
|Structural
+
|Chemistry
 
|
 
|
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
|H2 as an active species
 +
|Seb Eastham (ICL)
 +
|Chemistry
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[FlexGrid|FlexGrid Stage 2: Enable nested simulations over any custom domains]]
+
|HCN, acetonitrile as fire tracers
−
|Jiawei Zhuang (Harvard)<br>Melissa Sulprizio ([[GCST]])
+
|Kevin Bates (CU Boulder)
−
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Clean up SOA diagnostics
+
|Implement ethane in carbon simulation
−
|GCST
+
|Yuzhong Zhang (Westlake)
−
|Structural
+
|Chemistry
 
|
 
|
−
*GCST has implemented many existing SOA diagnostics in netCDF
 
−
*GCST would need help from the community to streamline these diagnostics
 
  
 
|-valign="top"
 
|-valign="top"
−
|Calculation consistency throughout code: surface area, HGF (via species database)
+
|Mesospheric source of CO
−
|GCST
+
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
−
|Structural
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Harmonizing Henry's Law coefficients across wet and dry deposition
+
|Drought-stress algorithm
−
|[[GCST]]
+
|Wei Li (Houston)
−
|Science
+
|Emissions
 
|
 
|
−
*Work not started yet. Will need input from the community.
 
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
+
|Physically-based resolution correction for BVOC emissions using MEGAN
 +
|May Fu (SUSTech)
 +
|Emissions
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC offline coupling in standard model + benchmark
+
|Canadian forest fire prediction system (Canada government forecast model)
−
|Rokjin Park (SNU)<br>Daniel Rothenberg (MIT)
+
|Robin Stevens (Montreal)
−
|Science
+
|Emissions
 
|
 
|
−
*Rokjin Park says code is ready
 
−
*Waiting on clarification in which version this is implemented in.
 
  
−
|}
+
|-valign="top"
 +
|Cooking emissions (not biofuel)
 +
|Kelvin Bates (CU Boulder)
 +
|Emissions
 +
|
  
−
--[[User:Lizzie Lundgren|Lizzie Lundgren]] ([[User talk:Lizzie Lundgren|talk]]) 15:11, 29 June 2018 (UTC)
+
|-valign="top"
 +
|State-specific annual emissions scaling factors (US) (1990-2021)
 +
|Ishir Dutta (MIT)
 +
|Emissions
 +
|
  
−
=== Over the horizon (6-12 months) ===
+
|-valign="top"
 +
|GISS-GC online
 +
|Lee Murray (Rochester)
 +
|External model
 +
|
  
−
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
−
|- bgcolor="#cccccc"
+
|Hybrid MPI-OpenMP in GCHP
−
!width="500px"|Item
+
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>Lizzie Lundgren (Harvard)
−
!width="200px"|Author(s)
+
|GCHP
−
!width="100px"|Type
+
|
−
!width="300px"|Status
+
  
 
|-valign="top"
 
|-valign="top"
−
|[http://www.atmos-chem-phys.net/16/2819/2016/ A snow NOx source from deep snowpack]
+
|MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files
−
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
 
|
 
|
−
*Delivered to GCST (Nov 2017)
 
−
*Needs to be added as a HEMCO extension, but converting from ancient v9-01-01 code may take significant effort.
 
  
 
|-valign="top"
 
|-valign="top"
−
|MEIC emissions over China (2000-2015)
+
|MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files
−
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
 
|
 
|
−
*Defer until MEIC paper is published
 
  
 
|-valign="top"
 
|-valign="top"
−
|GISS-GC (ICECAP/GCAP2) in standard model + benchmark
+
|MAPL3: Wildcards in GCHP History
−
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
−
|Lee Murray replied:
+
|
−
*"I would say 6-12 months to be safe, but the goal is to have it done by the end of summer 2018.  There will actually be very minimal updates to GEOS-Chem; most of the updates are to modify the GISS model to output MERRA2-like data, to facilitate integration with GCHP and future updates to the CTM."
+
  
 
|-valign="top"
 
|-valign="top"
−
|GISS-GC GCHP
+
|MAPL3: Output emissions with positive up convention in GCHP
−
|Lee Murray (Rochester)<br>Pengfei Liu (Harvard)<br>Yang Li (Harvard)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
 
|
 
|
−
*Rochester and Harvard groups are coordinating, to avoid duplication of effort
 
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC GCHP
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
−
|Seb Eastham (MIT)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Performance
 
|
 
|
−
*Seb Eastham is now the lead developer.
 
−
*Estimate late 2018 or early 2019; validation will take time
 
  
 
|-valign="top"
 
|-valign="top"
−
|Additional modifications for [[FlexChem]], including:
+
|Photophysical oxidation of aldehydes
−
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Paulo Sebastianelli (Wollongong)<br>Jenny Fisher (Wollongong)
−
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Chemistry
−
|[[GCST]]
+
−
|Structural
+
 
|
 
|
−
*Mike Long, who was the principal proponent behind these updates, has since left the GC community.
 
−
*We are not sure who will take this over
 
  
 
|-valign="top"
 
|-valign="top"
−
|Dynamic fire modeling/prediction
+
|DMS updates
−
|Shiliang Wu (MNT)
+
|Will Porter (UCR)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Interannually varying ocean model BCs for Hg from ocean model
+
|Furans emission and chemistry
−
|Colin Thackray (Harvard)
+
|Lixu Jin (Montana)<br>Lu Hu (Montana)
−
|Science
+
|Chemistry + <br>Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|PAH & PFCA simulations
+
|Cl2 prodcution from Fe aerosol
−
|Peter Ivatt (York)<br>Mat Evans (York)<br>Noelle Selin (MIT)<br>Colin Thackray (Harvard)
+
|Qianjie Chen (HK Poly)<br>Becky Alexander (UW)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|CH4 in full chemistry simulation
+
|VCP emissions
−
|Seb Eastham (Harvard)
+
|Kevin Bates (CU Boulder)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Standard future land use maps (PFT, LAI) for RCP/CMIP6 simulations
+
|Bidirectional land-atmosphere exchange for Hg
−
|Colette Heald (MIT)<br>Loretta Mickley (Harvard)
+
|Yuying Cui (MIT/Tsinghua)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive GISS met fields from CMIP6 scenarios for community
+
|OH covariances for inversions
−
|Lee Murray (Rochester)
+
|Elise Penn (Harvard)
−
|Science
+
|Inversions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to cold-temperature deposition
+
|CESM2-GC offline
−
|Lyatt Jaegle (UW)
+
|Seb Eastham (ICL)<br>Lee Murray (Rochester)
−
|Science
+
|Met fields
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Simple parameterization for CO2-O3 dependence of stomatal resistance
+
|Re-binning of off-line sea salt and dust for TOMAS
−
|Amos Tai (CUHK)
+
|Betty Croft (Dalhousie)
−
|Science
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|NH3 emissions over China
+
|TOMAS nucleation updates
−
|Lin Zhang (PKU)
+
|Sam O'Donnell (CSU)
−
|Science
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Using GEOS-Chem within GEOS-5
+
|Stratospheric aerosol APM
−
|Loretta Mickley (Harvard)
+
|Fangqun Yu (SUNY Albany)
−
|Science
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
+
|Transition from MERRA-2 to GEOS-IT for benchmarking
−
|Beata Bukosa (Wollongong)<br>Dylan Jones (UofT)
+
|Yuanjian Zhang (WashU)
−
|Science
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Seasonal EMEP emissions back to 1980
+
|Automate integration testing on AWS
−
|Mat Evans (York)
+
|Yidan Tang (WashU)
−
|Science
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to NO2 dry deposition
+
|Integration testing: Add across end of year run
−
|Brian Boys (Dalhousie)
+
|GCST
−
|Science
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|APM update and integration with most recent GEOS-Chem version
+
|Integration testing: Add GEOS-IT
−
|Gan Luo (SUNY Albany)
+
|Yuanjian Zhang (WashU)
 +
|Quality Assurance
 +
|
 +
 
 +
|-valign="top"
 +
|Separate mixing, emissions, and drydep
 +
|Yuanjian Zhang (WashU)
 
|Structural
 
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Cosmogenic tracer production
+
|Intel IFX compiler
−
|Lee Murray (Rochester)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Explore resolution-consistent dust emissions
+
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
−
*Make high-res concentrations or mass fluxes available offline, implement in met field processing
+
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
−
|David Ridley (MIT)<br>GCST<br>Nested Model WG
+
|Structural
−
|Science
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Dust emissions at nested-grid resolutions
+
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
−
|Yuxuan Wang (U. Houston)<br>Jun Wang (U. Iowa)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|Structural
 
|
 
|
−
*Check for overlap with resolution-consistent dust emissions above
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Wet_deposition#Update_SO2_scavenging_in_convective_updrafts_for_consistency|Update SO2 scavenging in convective updrafts for consistency]]
+
|Limit allocation of State_Met to what is needed per simulation
−
|Duncan Fairlie (NASA/LARC)  
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt emission from sea ice
+
|Using 3-D precipitation fluxes to calculate precipitation formation and re-evaporation in scavenging (to be consistent with GEOS/GOCART & ground precipitation)
−
|Jiayue Huang (UW)
+
|Gan Luo (Albany)<br>Hongyu Liu (NIA/LaRC)<br>Bo Zhang (NIA/LaRC)
−
|Science
+
|Wet deposition
 
|
 
|
  
 
|}
 
|}
  
−
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 19:42, 24 May 2018 (UTC)
+
== Longer term (12-24 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"|Status
+
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|GCHP stretched grid
+
|Modal aerosol model (MAM7) in GCHP
−
|Jiawei Zhuang (Harvard)
+
|Shreya Sharma (MIT)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|1/8 degree nested-grid simulations with GEOS-FP
+
|Online OCIM ocean biogeochemistry
−
|Nested Model WG
+
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
−
|Science
+
|Chemistry
 
|
 
|
−
*Wait for more interest
 
  
 
|-valign="top"
 
|-valign="top"
−
|Embedding GEOS-Chem into CESM
+
|Perchlorate chemistry
−
|Jean-Francois Lamarque (NCAR)
+
|Yuk Chun Chan (UW)
−
|Science
+
|Chemistry
 
|
 
|
−
*NOTE: Seb Eastham is already working on this
 
  
 
|-valign="top"
 
|-valign="top"
−
|Adjoint of carbon cycle simulation in GCHP
+
|Non-stomatal dry deposition (2-layer canopy model)
−
|Kevin Bowman (JPL)
+
|Michael Vermeuel (Purdue)
−
|Science
+
|Dry Deposition
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Isoprene chemistry v2 (new Caltech update)
+
|Continental chloride particle emissions (salty dust, road salt)
−
|Kelvin Bates (Caltech)
+
|Jessica Haskins (Utah)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Contemporary land cover: developing historical and updated GEOS-Chem land cover maps based on satellite remote sensing
+
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
−
|Jeff Geddes (BU)
+
|Ruochong (Tshingua)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Farquhar-Ball-Barry model to calculate stomatal resistance
+
|Lightning NOx production rates
−
|Amos Tai (CUHK)<br>Jeff Geddes (BU)
+
|Bex Horner (UCL)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Impacts of chemistry on ecosystem/carbon cycle
+
|HFO and CF3CHO
−
|Kevin Bowman (JPL)<br>Anthony Bloom (JPL)
+
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Improved lightning emission scheme
+
|Glyoxal updates from isoprene
−
|Lee Murray (Rochester)
+
|Tzung-May Fu (SUSTech)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Resolution-independent lightning NOx
+
|Iodine chemistry
−
|Lee Murray (Rochester)
+
|Becky Alexander (UW)<br>Xuan Wang (CUHK)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Bidirectional NH3 emissions
+
|GFED5 biomass burning
−
|Juliet Zhu (CSU)
+
|Eric Roy (MIT)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Country-based weekday/weekend variability for EDGAR 4.2
+
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
−
|Lee Murray (Rochester)<br>Christoph Keller (Harvard)
+
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Update keytone photolysis
+
|Soil Hg emissions 2010-2020
−
|Jared Brewer (CSU)<br>Emily Fischer (CSU)
+
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Small alkyl nitrates
+
|Air-sea exchange parameterization
−
|Jenny Fisher (Wollongong)
+
|Eric Roy (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|YIBS-GC chemistry-biosphere-fire coupling
+
|Soil Hg emissions parameterization
−
|Loretta Mickley (Harvard)<br>Xu Yue (IAP)
+
|Ari Feinberg (IQF-CSIC)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Nitrogen-LAI coupling
+
|Sea salt uptake of GOM
−
|Lin Zhang (PKU)<br>Amos Tai (CUHK)
+
|Eric Roy (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Implementing humidity/VPD dependence of dry deposition
+
|Photoreduction rate constant
−
|Jennifer Murphy (U. Toronto)
+
|Eric Roy (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|SO2 wet scavenging
+
|New observations (2010-2020) in standardized Hg benchmark for intercomparison
−
|Duncan Fairlie (NASA Langley)
+
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Heterogeneous sulfate production
+
|Hg simulation in GCHP
−
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Eric Roy (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|MOSAIC implementation
+
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
−
|Sebastian Eastham (Harvard)
+
|Hannah Horowitz (UIUC)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Particle size climatology
+
|Possibly updating Hg oxidation chemistry based on Utah field campaigns
−
|Fangqun Yu (SUNY Albany)
+
|Jessica Haskins (Utah)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt/dust size distribution
+
|New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online
−
|David Ridley (MIT)<br>Colette Heald (MIT)
+
|Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC)
−
|Science
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to GTMM
+
|Extend IMI to CO2 (ICI)
−
|Rebecca Stern (Harvard)
+
|Hannah Nesser (JPL)  
−
|Science
+
|Inversions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Tracer transport ocean
+
|Global emission inventory of metals
−
|Chris Holmes (FSU)
+
|Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U)
−
|Science
+
|Metals simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Include Hg in full chemistry simulation
+
|Investigate and improve performance of aerosol chemistry
−
|Noelle Selin (MIT)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Goddard seasonal weather prediction in GCHP
+
|PAH - update from version 11
−
|Kevin Bowman (JPL)
+
|Lexia Cicone (MIT)
−
|Science
+
|POPs simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Climate index diagnostics (drought, etc.)
+
|Species database more accessible; doc updates; TOL discussion
−
|Chemistry-ecosystems-climate WG
+
|Jessica Haskins (Utah)
 
|Structural
 
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Joint CO/CO2/CH4 simulation
+
|Stretched-grid plotting in GCPy
−
|Nicholas Deutscher (U. Wollongong)
+
|Killian Murphy (York)
−
|Science
+
|Tools
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon coupling: oceans and terrestrial models
+
|Model inter-comparison of transport (GEOS, GCHP, GCClassic)
−
|Chris Holmes (FSU)
+
|Lizzie Lundgren (Harvard), Emma Knowland (NASA)
−
|Science
+
|Transport
 
|
 
|
−
*Ocim-pure physical transport, ECCO-Darwin ocean biogeochemistry
 
  
 
|-valign="top"
 
|-valign="top"
−
|DMS oxidation scheme updating
+
|Comparing mass fluxes in GCHP vs. traditional lat/lon wind
−
|Qianjie Chen (UW)<br>Chemistry WG
+
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
−
|Science
+
|Transport
−
|
+
−
 
+
−
|-valign="top"
+
−
|Limiting NH3 uptake due to OA
+
−
|Rachel Silvern (Harvard)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|[[GEOS-Chem_species_units|Uniformity of units throughout GEOS-Chem components]]
+
−
|[[GCST]]
+
−
|Structural
+
 
|
 
|
  
 
|}
 
|}
−
 
−
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 15:32, 23 May 2018 (UTC)
 

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
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