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.
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'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main 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.
+
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 [http://acmg.seas.harvard.edu/geos/geos_working_groups.html Working Groups] and the [http://acmg.seas.harvard.edu/geos/geos_steering_cmte.html Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|GEOS-Chem Versions wiki page]].
  
== Priorities assigned to upcoming GEOS-Chem versions ==
+
== Release schedule ==
  
=== 12.2.0 ===
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Please see the [http://wiki.seas.harvard.edu/geos-chem/images/e/e1/GEOS-Chem_Release_Proposal.pdf GEOS-Chem Release Proposal] outlining the procedure and schedule for releasing GEOS-Chem versions.  
  
<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>
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== Merged and awaiting release ==
  
=== 12.3.0 ===
+
See the links below for items merged and awaiting release.
 
+
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.
+
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
!width="500px"|Feature
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!width="200px"|Patch version in development
!width="200px"|Submitted by
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!width="200px"|Minor version in development
!width="100px"|Type
+
!width="300px"|Status
+
 
+
|-
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!colspan="4" bgcolor="#CCFFFF"|Features affecting the full-chemistry simulation:
+
  
 
|-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]]
+
|align="center"|'''[[GEOS-Chem 13.3.1]]'''
|Seb Eastham (Harvard)
+
|align="center"|'''[[GEOS-Chem 13.3.0]]'''
|Science
+
|
+
*Delivered to GCST (May 2017)
+
 
+
|-valign="top"
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|[[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) ]]
+
|Jenny Fisher (Wollongong) <br>Barron Henderson (US EPA)
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|Science
+
|
+
*Will require reworking of LAI regridding in GEOS-Chem Classic and pre-processing land map data
+
 
+
|-valign="top"
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|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Updated_PFT_file|Updated PFT file for MEGAN]]
+
|Jenny Fisher (Wollongong)<br>Dylan Millet (UMN)
+
|Science
+
|
+
*Delivered to GCST (May 2018)
+
 
+
|-valign="top"
+
|[[Volcanic_SO2_emissions_from_Aerocom#OMI-based_volcanic_emissions|OMI-based Volcanic emissions 2005-2012]]
+
|Cui Ge (U. Iowa)<br>Jun Wang (U. Iowa)
+
|Science
+
|
+
*Data delivered to GCST (Jan 2019)
+
 
+
|-valign="top"
+
|[[GEOS-Chem_12#Replace_HEMCO_built-in_unit_conversions_with_scale_factors_in_config_file|Replace HEMCO built-in unit conversions with scale factors in config file]]
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|[[GCST]]
+
|Structural
+
|
+
*Differences in precision and order of operations may result in small number differences
+
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|Features NOT affecting the full-chemistry simulation:
+
 
+
|-valign="top"
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|TOMAS update: Allow the "emitted" size distribution be a function of a number of properties
+
|Emily Ramnarine (Colorado State)<br>Jeff Pierce (Colorado State)
+
|Science
+
|
+
*Delivered to GCST (Jan 2019)
+
 
+
  
 
|}
 
|}
  
=== 12.4.0 ===
+
== Feature integration in progress ==
  
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 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.  
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
!width="500px"|Feature
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!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
|-
+
!colspan="4" bgcolor="#CCFFFF"|Features affecting the full-chemistry simulation:
+
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions#Dust_emissions|Grid-independent dust emissions]] (hourly)
+
|[https://github.com/geoschem/geos-chem/pull/459 Updates to enable automated run directory creation]
|David Ridley (CARB, formerly MIT)
+
|Liam Bindle (GCST)<br>Melissa Sulprizio (GCST)
|Science
+
|Run directory
 +
|Medium
 
|
 
|
*Data delivered to GCST (Jan 2019)
 
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions#Lightning_NOx_emissions|Grid-independent lightning NOx emissions]] (3-hourly)
+
|Upgrade Fast-JX to Cloud-J
|Lee Murray (Rochester)
+
|Lizzie Lundgren (GCST)
|Science
+
|Structural
 +
|Difficult
 
|
 
|
*Data delivered to GCST (Jan 2019)
+
*See [https://github.com/geoschem/cloud-j geoschem/cloud-j]
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions#Biogenic_emissions|Grid-independent biogenic emissions]] (hourly)
+
|Migrating sulfate chemistry into KPP
|Jintai Lin (PKU)
+
|Mike Long (GCST)
|Science
+
|Chemistry &<br>Structural
 +
|Difficult
 
|
 
|
*Data delivered to GCST (Jan 2019)
+
*Complete but needs validation & further testing
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions#Sea_salt_emissions|Grid-independent sea salt emissions]] (hourly)
+
|[http://acmg.seas.harvard.edu/publications/2021/shah_est_2021.pdf Updated Hg chemistry in KPP]
|Jintai Lin (PKU)
+
|Viral Shah (Harvard)<br>Colin Thackray (Harvard)<br>Mike Long (Harvard)
|Science
+
|Chemistry
 +
|Medium
 
|
 
|
*Data delivered to GCST (Jan 2019)
 
  
 
|-valign="top"
 
|-valign="top"
|[[Grid-independent_emissions#Soil_NOx_emissions|Grid-independent soil NOx emissions]] (hourly)
+
|Add capability to use mass fluxes in advection
|Jintai Lin (PKU)
+
|Sebastian Eastham (MIT)
|Science
+
|Transport
 +
|Easy
 
|
 
|
*Data delivered to GCST (Jan 2019)
+
*Identified as a priority for GC 13, but not yet delivered
 +
*GCHP only
  
|}
 
 
== Priorities not yet assigned to a particular version ==
 
 
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 ===
 
 
{| border=1 cellspacing=0 cellpadding=5
 
|-bgcolor="#CCCCCC"
 
!width="500px"|Feature
 
!width="200px"|Submitted by
 
!width="100px"|Type
 
!width="300px"|Status
 
 
|-
 
!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]
+
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
|Yingying Yan (China University of Geosciences)
+
|Melissa Sulprizio (GCST)
|Science
+
|Emissions
 +
|Easy
 
|
 
|
*Implemented in GEOS-Chem v9-02
 
  
 
|-valign="top"
 
|-valign="top"
|[https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JD029133 N2O5 hydrolysis updates]
+
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx], [https://github.com/geoschem/geos-chem/issues/331 biomass burning], and [https://github.com/geoschem/geos-chem/issues/656 volcanoes]
|Viral Shah (UW)<br>Lyatt Jaegle (UW)<br>Chris Holmes (FSU)  
+
|Lee Murray (Rochester)<br>Melissa Sulprizio (GCST)
|Science
+
|Emissions
 +
|Easy
 
|
 
|
*Delivered to GCST (Dec 2018)
 
  
 
|-valign="top"
 
|-valign="top"
|Cloud reactive uptake of NOx
+
|[https://github.com/geoschem/geos-chem/pull/945 Add option for driving GEOS-Chem with native GEOS meteorological files]
|Chris Holmes (FSU)
+
|Liam Bindle (GCST)
|Science
+
|Structural
 +
|Easy
 
|
 
|
*Implemented in [[GEOS-Chem v11-01|v11-01]]
 
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Emissions and surface fluxes updates
 
  
 
|-valign="top"
 
|-valign="top"
|Carbon bottom up fluxes: anthro, ocean, land
+
|Change State_Chm%Species from 4D to vector of 3D arrays and point them to internal state in GCHP
|Kevin Bowman (JPL)
+
|Lizzie Lundgren (GCST)
|Science
+
|Structural
|Kevin Bowman wrote:
+
|Medium
*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
+
**CMSFluxFossilfuel
+
**CMSFluxNEE
+
**CMSFluxOcean
+
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
+
 
+
|-valign="top"
+
|Wet deposition parameterizations: pH dependency, Henry's law coefficients, etc.
+
|Sarah Safieddine (MIT)<br>GCST
+
|Science
+
 
|
 
|
 +
|}
  
|-
+
== Feature integration in the queue ==
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
+
  
|-valign="top"
+
Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.
|Sea salt aerosol alkalinity
+
|Qianjie Chen (UW)<br>Becky Alexander (UW)<br>Xuan Wang (Harvard)
+
|Science
+
|
+
*UW version delivered to GCST (Nov 2017)
+
  
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
|VBS SOA option
+
|-bgcolor="#CCCCCC"
|Rokjin Park (SNU)
+
!width="200px"|Feature
|Science
+
!width="200px"|Contributor(s)
|
+
!width="100px"|Model scope
*Code has been implemented in the ancient v9-01-02 version. 
+
!width="100px"|Ease of implementation
*Bringing this up to the current SOA model (simple SOA, complex SOA) will likely involve significant effort.
+
!width="300px"|Notes
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
+
  
 
|-valign="top"
 
|-valign="top"
|AMAP/UNEP 2035 for Hg simulation
+
|Add PM10 diagnostic
|Helene Angot (MIT)
+
|Aerosols WG
|Science
+
|Diagnostic
 +
|Easy
 
|
 
|
*Data is available, but has not been transferred to GCST yet
 
  
 
|-valign="top"
 
|-valign="top"
|Oxidant fields from v10 for 2006-2012
+
|[https://acp.copernicus.org/articles/21/1861/2021/ Updated Rn-222 emissions]
*3D chemical source for CO2, CO
+
|Bo Zhang
*OH for tagged CO & CH4
+
|Emissions
|Dylan Jones (UofT)
+
|Easy
|Science
+
 
|
 
|
*Will make data files available on ftp site
+
*Existing Rn emissions will remain as an option
 +
*Submitted code updates built on v11-02f
 +
*Original data at https://doi.org/10.5281/zenodo.3942287
  
 
|-valign="top"
 
|-valign="top"
|Africa nested-grid for GEOS-FP and MERRA-2
+
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation]
|Eloise Marais (U. Birmingham)
+
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)
|Science
+
|Specialty simulation
 +
|Medium
 
|
 
|
*Delivered to GCST (Dec 2017)
+
*See [https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
*Could be implemented with Jiawei Zhuang's FlexGrid
+
*Ideally implemented as a chemical mechanism in KPP
  
 
|-valign="top"
 
|-valign="top"
|West Africa nested-grid for GEOS-FP
+
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option)
|Mat Evans (York)<br>Eleanor Morris (York)
+
|Mike Long (Harvard) <br> Haipeng Lin (Harvard)  
|Science
+
|Chemistry
 +
|Difficult
 
|
 
|
*Could be implemented with Jiawei Zhuang's FlexGrid
+
*In testing
  
|-valign="top"
+
|}
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate simulation]]
+
|Becky Alexander (UW)
+
|Science
+
|
+
  
|-valign="top"
+
== Feature integration not yet prioritized ==
|Arsenic simulation
+
|Shiliang Wu (MT)
+
|Science
+
|
+
  
|-
+
Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integrating into the model.
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
+
  
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
|Update to redistribution of mass in transport
+
|-bgcolor="#CCCCCC"
|Seb Eastham (MIT)
+
!width="200px"|Feature
|Science
+
!width="200px"|Contributor(s)
|
+
!width="100px"|Model scope
*Stop gap solution pending use of mass fluxes instead of winds in advection
+
!width="100px"|Ease of implementation
 
+
!width="300px"|Notes
|-
+
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
  
 
|-valign="top"
 
|-valign="top"
|Benchmark of stratospheric simulation
+
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
|Dylan Jones (U. Toronto)
+
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
|Benchmarking
+
|Chemistry
 +
|Medium
 
|
 
|
*1-yr benchmarks for GEOS-Chem v11-01d and later include comparisons with OSIRIS O3
+
*Delivered to GCST (Jun 2020)
*Waiting on OSIRIS NO2 data
+
*Waiting on comparisons with ACE-FTS data
+
  
 
|-valign="top"
 
|-valign="top"
|Add total column O3 to benchmarks
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ MEGAN3]
|Chris Holmes (FSU)<br>[[GCST]]
+
|Sam Silva (MIT)
|Benchmarking
+
|Emissions
 +
|Medium
 
|
 
|
*Deferred until GEOS-Chem 12
+
*Implementation details may be found at https://zenodo.org/record/3614062#.XzvrH5NKjOR
*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)
+
|[https://acp.copernicus.org/articles/17/3699/2017/ GC-YIBs biosphere-atmospheric chemistry coupled model]
|[[GCST]]
+
|Xu Yue (NUIST)
|Structural
+
|
+
*Ongoing
+
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
+
 
+
|-valign="top"
+
|Archival of roughness length for temperature z0T
+
|[[GCST]]
+
|Met processing
+
|
+
*Work has not yet begun
+
|}
+
 
+
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 19:04, 2 August 2018 (UTC)
+
 
+
=== Almost there (< 6 months) ===
+
 
+
{| border=1 cellspacing=0 cellpadding=5
+
|- bgcolor="#cccccc"
+
!width="500px"|Item
+
!width="200px"|Author(s)
+
!width="100px"|Type
+
!width="300px"|Status
+
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
 
+
|-valign="top"
+
|[https://www.geosci-model-dev-discuss.net/gmd-2017-125/ GEOS resolution & subgrid convection]
+
|Karen Yu (Harvard)
+
 
|Science
 
|Science
 +
|Easy
 
|
 
|
*To be installed by Bob Yantosca (Harvard), tested by Tailong He (Toronto)
+
*See [https://github.com/geoschem/geos-chem/issues/425 geoschem/geos-chem #425]
*Work to begin after [[GEOS-Chem 12#12.0.0|GC 12.0.0]] release
+
  
 
|-valign="top"
 
|-valign="top"
|Transport families in the stratosphere
+
|[http://acmg.seas.harvard.edu/presentations/IGC9/posters/Tue_Posters_lam_joey.pdf Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Christoph Keller (NASA GMAO)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
 +
|Easy
 
|
 
|
*Implemented in GEOS-GC coupled system
+
*Delivered to GCST (Feb 2021)
 
+
*See [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
|-
+
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
+
  
 
|-valign="top"
 
|-valign="top"
 
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
 
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
 
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
 
|Sebastian Eastham (MIT)<br>Eric Fleming (NASA GMAO)
|Science
+
|Chemistry
 +
|Easy
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|H2 chemistry in UCX
+
|Landcover/Fire Emissions Offline LPJlmfire
|Chris Holmes (FSU)
+
|Loretta Mickley (Harvard)<br>Yang Li (Harvard)
|Science
+
|Emissions
 +
|Easy
 
|
 
|
*Defer until paper is submitted
+
*Data files delivered to GCST (July 2021)
*Estimate Fall 2018 or sooner
+
  
 
|-valign="top"
 
|-valign="top"
|Updated chlorine chemistry
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Xuan Wang (Harvard)
+
|Sam Silva (MIT)
 
|Science
 
|Science
 +
|Medium
 
|
 
|
*Defer until the paper is submitted
+
*Code is available at https://zenodo.org/record/3614062
  
|-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]]
+
|Katie Travis (MIT)
+
|Structural
+
|
+
*Defer until the paper is submitted
+
  
|-valign="top"
+
== Almost there (< 6 months) ==
|OH + NO2 rate update
+
|Barron Henderson (EPA)
+
|Science
+
|
+
  
|-valign="top"
+
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
|[[Chemistry_Issues#Script_for_evaluating_carbon_balance|Script for checking N, C, etc. balance in chemistry mechanism]]
+
|Barron Henderson (EPA)
+
|Software
+
|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"
+
{| border=1 cellspacing=0 cellpadding=5
|Aromatics and dicarbonyl chemistry
+
|- bgcolor="#cccccc"
|William Porter (MIT)<br>Tzung-May Fu (PKU)
+
!width="200px"|Feature
|Science
+
!width="200px"|Contributor(s)
|
+
!width="100px"|Model scope
 +
!width="420px"|Notes
  
|-valign="top"
 
|Document chemical mechanism in KPP file
 
|Mat Evans (York)
 
|Structural
 
|
 
  
 
|-valign="top"
 
|-valign="top"
|Diurnal variability for NH3
+
|[https://github.com/geoschem/geos-chem/issues/559 Implement H2 chemistry in UCX]
|Henze group
+
|Science
+
|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"
+
|Uptake of HNO3 onto coarse-mode sea salt
+
|Prasad Kasibhatla (Duke)
+
|Science
+
|
+
 
+
|-valign="top"
+
|[https://www.atmos-chem-phys.net/18/11185/2018/ Photolysis of NITs]
+
|Prasad Kasibhatla (Duke)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Update heterogeneous processes to address high bias in nitrate
+
 
|Chris Holmes (FSU)
 
|Chris Holmes (FSU)
|Science
+
|Chemistry
 
|
 
|
 +
*Identified as a priority for GC 13, but not yet delivered
  
|-valign="top"
 
|UCX-mini chemical mechanism
 
|Sebastian Eastham (MIT)
 
|Science
 
|
 
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
 
  
 
|-valign="top"
 
|-valign="top"
|[https://www.atmos-chem-phys-discuss.net/acp-2018-459/ Update to hygroscopic growth]
+
|[https://iopscience.iop.org/article/10.1088/1748-9326/ac16a3 New soil NOx parameterization]
|Robyn Latimer (Dalhousie)<br>Randall Martin (Dalhousie)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Science
+
|Emissions
 
|
 
|
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Emissions updates
 
  
 
|-valign="top"
 
|-valign="top"
|EPA-derived BC/OA emissions over US (1990-2012)
+
|[[Grid-independent_emissions|Updated offline biogenic emissions]]
|David Ridley (MIT)<br>Chi Li (Dalhousie)
+
|Hongjian Weng (PKU)
|Science
+
|Emissions
 
|
 
|
*Emissions are available but need to be formatted properly.
+
*Identified as a priority for GC 13, but not yet delivered
*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]]
+
|[[Grid-independent_emissions|Updated offline sea salt emissions]]
|Barron Henderson (US EPA)
+
|Hongjian Weng (PKU)
|Science
+
|Emissions
 
|
 
|
*Pending receipt of corrected data files
+
*Identified as a priority for GC 13, but not yet delivered
  
 
|-valign="top"
 
|-valign="top"
|EPA NEI2011 Version EK
+
|[[Grid-independent_emissions|Updated offline soil NOx emissions]]
|Zitely Tzompa-Sosa (CSU)<br>Emily Fischer (CSU)
+
|Hongjian Weng (PKU)
|Science
+
|Emissions
 
|
 
|
*Estimate Late 2018 or sooner
+
*Identified as a priority for GC 13, but not yet delivered
  
 
|-valign="top"
 
|-valign="top"
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
+
|Provide recommended rather than hard-coded scaling factors for online emissions
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
+
|GCST
|Science
+
|Emissions
 
|
 
|
*MASAGE data is already available.
+
*Identified as a priority for GC 13, but not yet developed
*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]]
+
|Diagnostic to archive XCO2, XCO, and XCH4
|Amos Tai (CUHK)
+
|Dylan Jones (Toronto)
|Science
+
|Diagnostic
 
|
 
|
*Waiting on data
 
  
 
|-valign="top"
 
|-valign="top"
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations
|Fabien Paulot (NOAA/GFDL)
+
|Kazu Miyazaki (JPL)
|Science
+
|Input data
 
|
 
|
*Data files delivered to GCST (Jan 2016)
 
*Needs to be implemented via HEMCO, which is the primary delay
 
  
 
|-valign="top"
 
|-valign="top"
|Injection height for fire emissions
+
|BrC aging
|Juliet Zhu (CSU)<br>Emily Fischer (CSU)
+
|Xuan Wang (Harvard)<br>Melanie Hammer(Dalhousie)
|Science
+
|Chemistry
 
|
 
|
*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
+
|Shared Socioeconomic Pathways Emission Inventories
|Jeff Geddes (BU)
+
|Hong Liao (NUIST)
|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
+
|Rediagnosis of RAS convection in GEOS-Chem
|Amos Tai (CUHK)
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA/GMAO)
|Science
+
|Convection
 
|
 
|
 
+
*Work is finished and a manuscript is in preparation.
|-
+
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
+
  
 
|-valign="top"
 
|-valign="top"
|Wet scavenging in mixed-phase clouds
+
|Change GCHP advection inputs to use total pressure and mixing ratio rather than dry
|Bo Zhang (NIA/NASA Langley)
+
|Science
+
|
+
*Defer until paper is published
+
*Estimate Fall 2018
+
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
+
 
+
|-valign="top"
+
|Radon emission update
+
|Bo Zhang (NIA/NASA Langley)
+
|Science
+
|
+
*Defer until paper is published
+
*Estimate Fall 2018
+
 
+
|-valign="top"
+
|[[POPs simulation#PCB simulation|PCB simulation]]
+
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
+
|Science
+
|
+
 
+
|-valign="top"
+
|New EDGAR sectoral inventory for Hg (1970-2012)
+
|Amanda Giang (MIT)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Archive GISS met fields from RCP scenarios for community
+
|Lee Murray (Rochester)
+
|Science
+
|
+
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
+
 
+
|-valign="top"
+
|New version of MAPL
+
|GMAO<br>Lizzie Lundgren (GCST)
+
|Structural
+
|
+
 
+
|-valign="top"
+
|Flux ingestion
+
 
|Sebastian Eastham (MIT)
 
|Sebastian Eastham (MIT)
|Science
+
|Transport
 
|
 
|
 +
*Identified as a priority for GC 13, but not yet delivered
 +
*GCHP only
  
 
|-valign="top"
 
|-valign="top"
|Use CMake to simplify GCHP build process
+
|HTAPv3 emissions (0.1 deg, 2002-2018)
|Liam Bindle (Dalhousie)
+
|Emissions & Deposition WG
|Structural
+
|Emissions
 
|
 
|
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Structural updates
 
  
 
|-valign="top"
 
|-valign="top"
|[[FlexGrid|FlexGrid Stage 2: Enable nested simulations over any custom domains]]
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|Jiawei Zhuang (Harvard)<br>Melissa Sulprizio ([[GCST]])
+
|Structural
+
|
+
 
+
|-valign="top"
+
|Clean up SOA diagnostics
+
 
|GCST
 
|GCST
|Structural
+
|Chemistry
 
|
 
|
*GCST has implemented many existing SOA diagnostics in netCDF
 
*GCST would need help from the community to streamline these diagnostics
 
 
|-valign="top"
 
|Calculation consistency throughout code: surface area, HGF (via species database)
 
|GCST
 
|Structural
 
|
 
 
|-valign="top"
 
|Harmonizing Henry's Law coefficients across wet and dry deposition
 
|[[GCST]]
 
|Science
 
|
 
*Work not started yet. Will need input from the community.
 
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
 
 
|-valign="top"
 
|CESM-GC offline coupling in standard model + benchmark
 
|Rokjin Park (SNU)<br>Daniel Rothenberg (MIT)
 
|Science
 
|
 
*Rokjin Park says code is ready
 
*Waiting on clarification in which version this is implemented in.
 
  
 
|}
 
|}
  
--[[User:Lizzie Lundgren|Lizzie Lundgren]] ([[User talk:Lizzie Lundgren|talk]]) 15:11, 29 June 2018 (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"|Status
+
!width="420px"|Notes
  
 
|-valign="top"
 
|-valign="top"
|[http://www.atmos-chem-phys.net/16/2819/2016/ A snow NOx source from deep snowpack]
+
|Methylethylketone chemistry
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
|Jared Brewer (CSU)
|Science
+
|Chemistry
 
|
 
|
*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)
+
|Add sulfate dependence to SOA yield from isoprene in simple SOA
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
+
|Eloise Marais (Leicester)
|Science
+
|Chemistry
 
|
 
|
*Defer until MEIC paper is published
 
  
 
|-valign="top"
 
|-valign="top"
|GISS-GC (ICECAP/GCAP2) in standard model + benchmark
+
|GTMM updates
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
+
|Ben Geyman (Harvard)
|Science
+
|Hg simulation
|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"
+
|GISS-GC GCHP
+
|Lee Murray (Rochester)<br>Pengfei Liu (Harvard)<br>Yang Li (Harvard)
+
|Science
+
 
|
 
|
*Rochester and Harvard groups are coordinating, to avoid duplication of effort
 
  
|-valign="top"
 
|CESM-GC GCHP
 
|Seb Eastham (MIT)
 
|Science
 
|
 
*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:
+
|[https://github.com/geoschem/GCHP/issues/19 Integrating GMAO's tracer gridded component in GCHP]
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Christoph Keller (NASA GMAO)
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Transport Tracer simulation
|[[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
+
|Streamlining of specialty simulations through HEMCO and KPP
|Shiliang Wu (MNT)
+
|GCST
|Science
+
|Chemistry, Specialty simulations
|
+
 
+
|-valign="top"
+
|Interannually varying ocean model BCs for Hg from ocean model
+
|Colin Thackray (Harvard)
+
|Science
+
|
+
 
+
|-valign="top"
+
|PAH & PFCA simulations
+
|Peter Ivatt (York)<br>Mat Evans (York)<br>Noelle Selin (MIT)<br>Colin Thackray (Harvard)
+
|Science
+
|
+
 
+
|-valign="top"
+
|CH4 in full chemistry simulation
+
|Seb Eastham (Harvard)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Standard future land use maps (PFT, LAI) for RCP/CMIP6 simulations
+
|Colette Heald (MIT)<br>Loretta Mickley (Harvard)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Archive GISS met fields from CMIP6 scenarios for community
+
|Lee Murray (Rochester)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Updates to cold-temperature deposition
+
|Lyatt Jaegle (UW)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Simple parameterization for CO2-O3 dependence of stomatal resistance
+
|Amos Tai (CUHK)
+
|Science
+
|
+
 
+
|-valign="top"
+
|NH3 emissions over China
+
|Lin Zhang (PKU)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Using GEOS-Chem within GEOS-5
+
|Loretta Mickley (Harvard)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
+
|Beata Bukosa (Wollongong)<br>Dylan Jones (UofT)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Seasonal EMEP emissions back to 1980
+
|Mat Evans (York)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Updates to NO2 dry deposition
+
|Brian Boys (Dalhousie)
+
|Science
+
|
+
 
+
|-valign="top"
+
|APM update and integration with most recent GEOS-Chem version
+
|Gan Luo (SUNY Albany)
+
|Structural
+
|
+
 
+
|-valign="top"
+
|Cosmogenic tracer production
+
|Lee Murray (Rochester)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Explore resolution-consistent dust emissions
+
*Make high-res concentrations or mass fluxes available offline, implement in met field processing
+
|David Ridley (MIT)<br>GCST<br>Nested Model WG
+
|Science
+
|
+
 
+
|-valign="top"
+
|Dust emissions at nested-grid resolutions
+
|Yuxuan Wang (U. Houston)<br>Jun Wang (U. Iowa)
+
|Science
+
|
+
*Check for overlap with resolution-consistent dust emissions above
+
 
+
|-valign="top"
+
|[[Wet_deposition#Update_SO2_scavenging_in_convective_updrafts_for_consistency|Update SO2 scavenging in convective updrafts for consistency]]
+
|Duncan Fairlie (NASA/LARC)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Sea salt emission from sea ice
+
|Jiayue Huang (UW)
+
|Science
+
 
|
 
|
  
 
|}
 
|}
  
--[[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
  
 
|-valign="top"
 
|-valign="top"
|GCHP stretched grid
+
|Implement isotope simulation for CO and CH4 in GCHP
|Jiawei Zhuang (Harvard)
+
|Science
+
|
+
 
+
|-valign="top"
+
|1/8 degree nested-grid simulations with GEOS-FP
+
|Nested Model WG
+
|Science
+
|
+
*Wait for more interest
+
 
+
|-valign="top"
+
|Embedding GEOS-Chem into CESM
+
|Jean-Francois Lamarque (NCAR)
+
|Science
+
|
+
*NOTE: Seb Eastham is already working on this
+
 
+
|-valign="top"
+
|Adjoint of carbon cycle simulation in GCHP
+
|Kevin Bowman (JPL)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Isoprene chemistry v2 (new Caltech update)
+
|Kelvin Bates (Caltech)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Contemporary land cover: developing historical and updated GEOS-Chem land cover maps based on satellite remote sensing
+
|Jeff Geddes (BU)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Farquhar-Ball-Barry model to calculate stomatal resistance
+
|Amos Tai (CUHK)<br>Jeff Geddes (BU)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Impacts of chemistry on ecosystem/carbon cycle
+
|Kevin Bowman (JPL)<br>Anthony Bloom (JPL)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Improved lightning emission scheme
+
 
|Lee Murray (Rochester)
 
|Lee Murray (Rochester)
|Science
+
|Specialty simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Resolution-independent lightning NOx
+
|Migrate LETFK DA scheme to GCHP
|Lee Murray (Rochester)
+
|Kazu Miyazaki (JPL)
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Bidirectional NH3 emissions
+
|Super fast chemistry scheme
|Juliet Zhu (CSU)
+
|Benjamin Brown-Steiner (AER)<br>Makoto Kelp (Harvard)
|Science
+
|Chemistry
 
|
 
|
 +
*SF mechanism has been implemented and benchmarked in GEOS-Chem 12.0.0. This mechanism is of interest for those groups wanting fast global simulation of oxidation fields in GEOS-Chem simulations focused on aerosol microphysics.
 +
*The machine-learned chemical solver is still probably 12 months away from online implementation into GEOS-Chem.
  
 
|-valign="top"
 
|-valign="top"
|Country-based weekday/weekend variability for EDGAR 4.2
+
|Add non-volatile cations to ISORROPIA
|Lee Murray (Rochester)<br>Christoph Keller (Harvard)
+
|Becky Alexander (UW)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Update keytone photolysis
+
|DMS oxidation scheme updating
|Jared Brewer (CSU)<br>Emily Fischer (CSU)
+
|Becky Alexander (UW)<br>Qianjie Chen (UW)
|Science
+
|Chemistry
|
+
 
+
|-valign="top"
+
|Small alkyl nitrates
+
|Jenny Fisher (Wollongong)
+
|Science
+
|
+
 
+
|-valign="top"
+
|YIBS-GC chemistry-biosphere-fire coupling
+
|Loretta Mickley (Harvard)<br>Xu Yue (IAP)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Nitrogen-LAI coupling
+
|Lin Zhang (PKU)<br>Amos Tai (CUHK)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Implementing humidity/VPD dependence of dry deposition
+
|Jennifer Murphy (U. Toronto)
+
|Science
+
|
+
 
+
|-valign="top"
+
|SO2 wet scavenging
+
|Duncan Fairlie (NASA Langley)
+
|Science
+
 
|
 
|
 +
*Delayed - implemented pre-KPP
 +
*Currently bring implemented in KPP by UC Riverside group
  
 
|-valign="top"
 
|-valign="top"
 
|Heterogeneous sulfate production
 
|Heterogeneous sulfate production
 
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
 
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
|Science
+
|Chemistry
 
|
 
|
 +
*Delayed - implemented pre-KPP
  
 
|-valign="top"
 
|-valign="top"
|MOSAIC implementation
+
|Hg in WRF-GC
|Sebastian Eastham (Harvard)
+
|Yanxu Zhang (Nanjing)
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Particle size climatology
+
|Hg with blowing snow
|Fangqun Yu (SUNY Albany)
+
|Yanxu Xhang (Nanjing)
|Science
+
|Emissions, Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Sea salt/dust size distribution
+
|Hg isotopes
|David Ridley (MIT)<br>Colette Heald (MIT)
+
|Xiaotian Xu, Yanxu Xhang (Nanjing)
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updates to GTMM
+
|Hg in CESM CAM-CHEM
|Rebecca Stern (Harvard)
+
|Peng Zhang, Yanxu Xhang (Nanjing)
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Tracer transport ocean
+
|Complex / multicomplex variables
|Chris Holmes (FSU)
+
|Shannon Capps (Drexel)
|Science
+
|
+
 
+
|-valign="top"
+
|Include Hg in full chemistry simulation
+
|Noelle Selin (MIT)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Goddard seasonal weather prediction in GCHP
+
|Kevin Bowman (JPL)
+
|Science
+
|
+
 
+
|-valign="top"
+
|Climate index diagnostics (drought, etc.)
+
|Chemistry-ecosystems-climate WG
+
 
|Structural
 
|Structural
 
|
 
|
  
|-valign="top"
+
|}
|Joint CO/CO2/CH4 simulation
+
|Nicholas Deutscher (U. Wollongong)
+
|Science
+
|
+
  
|-valign="top"
+
----------------
|Carbon coupling: oceans and terrestrial models
+
|Chris Holmes (FSU)
+
|Science
+
|
+
*Ocim-pure physical transport, ECCO-Darwin ocean biogeochemistry
+
 
+
|-valign="top"
+
|DMS oxidation scheme updating
+
|Qianjie Chen (UW)<br>Chemistry WG
+
|Science
+
|
+
 
+
|-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)
+
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''

Revision as of 14:02, 21 October 2021

GEOS-Chem 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 Working Groups and the Steering Committee. For history of past releases see the GEOS-Chem Versions wiki page.

Release schedule

Please see the GEOS-Chem Release Proposal outlining the procedure and schedule for releasing GEOS-Chem versions.

Merged and awaiting release

See the links below for items merged and awaiting release.

Patch version in development Minor version in development
GEOS-Chem 13.3.1 GEOS-Chem 13.3.0

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
Updates to enable automated run directory creation Liam Bindle (GCST)
Melissa Sulprizio (GCST)
Run directory Medium
Upgrade Fast-JX to Cloud-J Lizzie Lundgren (GCST) Structural Difficult
Migrating sulfate chemistry into KPP Mike Long (GCST) Chemistry &
Structural
Difficult
  • Complete but needs validation & further testing
Updated Hg chemistry in KPP Viral Shah (Harvard)
Colin Thackray (Harvard)
Mike Long (Harvard)
Chemistry Medium
Add capability to use mass fluxes in advection Sebastian Eastham (MIT) Transport Easy
  • Identified as a priority for GC 13, but not yet delivered
  • GCHP only


Provide climatologies for open fire emissions Melissa Sulprizio (GCST) Emissions Easy
Climatologies for lightning NOx, biomass burning, and volcanoes Lee Murray (Rochester)
Melissa Sulprizio (GCST)
Emissions Easy
Add option for driving GEOS-Chem with native GEOS meteorological files Liam Bindle (GCST) Structural Easy
Change State_Chm%Species from 4D to vector of 3D arrays and point them to internal state in GCHP Lizzie Lundgren (GCST) Structural Medium

Feature integration in the queue

Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.

Feature Contributor(s) Model scope Ease of implementation Notes
Add PM10 diagnostic Aerosols WG Diagnostic Easy
Updated Rn-222 emissions Bo Zhang Emissions Easy
Joint CO2-CO-CH4-OCS simulation Beata Bukosa (NIWA)
Kevin Bowman (JPL)
Specialty simulation Medium
Adaptive chemical solver (as option) Mike Long (Harvard)
Haipeng Lin (Harvard)
Chemistry Difficult
  • In testing

Feature integration not yet prioritized

Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integrating into the model.

Feature Contributor(s) Model scope Ease of implementation Notes
Stratospheric HCN chemistry Armin Kleinbohl (JPL)
Debra Weisenstein (Harvard, retired)
Chemistry Medium
  • Delivered to GCST (Jun 2020)
MEGAN3 Sam Silva (MIT) Emissions Medium
GC-YIBs biosphere-atmospheric chemistry coupled model Xu Yue (NUIST) Science Easy
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam(CUHK)
Amos Tai (CUHK)
Science Easy
Extend UCX into the mesosphere Sebastian Eastham (MIT)
Eric Fleming (NASA GMAO)
Chemistry Easy
Landcover/Fire Emissions Offline LPJlmfire Loretta Mickley (Harvard)
Yang Li (Harvard)
Emissions Easy
  • Data files delivered to GCST (July 2021)
Canopy Physics Model Sam Silva (MIT) Science Medium

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


Implement H2 chemistry in UCX Chris Holmes (FSU) Chemistry
  • Identified as a priority for GC 13, but not yet delivered


New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa)
Emissions
Updated offline biogenic emissions Hongjian Weng (PKU) Emissions
  • Identified as a priority for GC 13, but not yet delivered
Updated offline sea salt emissions Hongjian Weng (PKU) Emissions
  • Identified as a priority for GC 13, but not yet delivered
Updated offline soil NOx emissions Hongjian Weng (PKU) Emissions
  • Identified as a priority for GC 13, but not yet delivered
Provide recommended rather than hard-coded scaling factors for online emissions GCST Emissions
  • Identified as a priority for GC 13, but not yet developed
Diagnostic to archive XCO2, XCO, and XCH4 Dylan Jones (Toronto) Diagnostic
Provide archived TCR-2 GEOS-Chem OH fields for carbon simulations Kazu Miyazaki (JPL) Input data
BrC aging Xuan Wang (Harvard)
Melanie Hammer(Dalhousie)
Chemistry
Shared Socioeconomic Pathways Emission Inventories Hong Liao (NUIST) Emissions
Rediagnosis of RAS convection in GEOS-Chem Tailong He (Toronto)
Dylan Jones (Toronto)
Andrea Molod (NASA/GMAO)
Convection
  • Work is finished and a manuscript is in preparation.
Change GCHP advection inputs to use total pressure and mixing ratio rather than dry Sebastian Eastham (MIT) Transport
  • Identified as a priority for GC 13, but not yet delivered
  • GCHP only
HTAPv3 emissions (0.1 deg, 2002-2018) Emissions & Deposition WG Emissions
Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism GCST Chemistry

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
Methylethylketone chemistry Jared Brewer (CSU) Chemistry
Add sulfate dependence to SOA yield from isoprene in simple SOA Eloise Marais (Leicester) Chemistry
GTMM updates Ben Geyman (Harvard) Hg simulation


Integrating GMAO's tracer gridded component in GCHP Christoph Keller (NASA GMAO) Transport Tracer simulation
Streamlining of specialty simulations through HEMCO and KPP GCST Chemistry, Specialty simulations

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
Implement isotope simulation for CO and CH4 in GCHP Lee Murray (Rochester) Specialty simulation
Migrate LETFK DA scheme to GCHP Kazu Miyazaki (JPL) Structural
Super fast chemistry scheme Benjamin Brown-Steiner (AER)
Makoto Kelp (Harvard)
Chemistry
  • SF mechanism has been implemented and benchmarked in GEOS-Chem 12.0.0. This mechanism is of interest for those groups wanting fast global simulation of oxidation fields in GEOS-Chem simulations focused on aerosol microphysics.
  • The machine-learned chemical solver is still probably 12 months away from online implementation into GEOS-Chem.
Add non-volatile cations to ISORROPIA Becky Alexander (UW) Aerosols
DMS oxidation scheme updating Becky Alexander (UW)
Qianjie Chen (UW)
Chemistry
  • Delayed - implemented pre-KPP
  • Currently bring implemented in KPP by UC Riverside group
Heterogeneous sulfate production Lin Zhang (PKU)
Becky Alexander (UW)
Yuxuan Wang (U. Houston)
Chemistry
  • Delayed - implemented pre-KPP
Hg in WRF-GC Yanxu Zhang (Nanjing) Hg simulation
Hg with blowing snow Yanxu Xhang (Nanjing) Emissions, Hg simulation
Hg isotopes Xiaotian Xu, Yanxu Xhang (Nanjing) Hg simulation
Hg in CESM CAM-CHEM Peng Zhang, Yanxu Xhang (Nanjing) Hg simulation
Complex / multicomplex variables Shannon Capps (Drexel) Structural

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