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 14.4.0]]'''
 +
 
 +
|}
  
−
=== 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:
+
|KORUS-AQ emissions for East Asia (as an option)
 +
|Katie Travis (NASA)
 +
|Emissions
 +
|Simple
 +
|
  
 
|-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]]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|Seb Eastham (Harvard)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
|Science
+
|Emissions
 +
|Simple
 
|
 
|
−
*Delivered to GCST (May 2017)
 
  
 
|-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) ]]
+
|New version of CEDS at 0.1 deg
−
|Jenny Fisher (Wollongong) <br>Barron Henderson (US EPA)
+
|Dandan Zhang (WashU)
−
|Science
+
|Emissions
 +
|Simple
 
|
 
|
−
*Will require reworking of LAI regridding in GEOS-Chem Classic and pre-processing land map data
+
*[https://github.com/geoschem/geos-chem/issues/1745 geos-chem issue #1745]
 +
*'''Currently on hold while an issue with seasonality in the new CEDS data is being investigated'''
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Updated_PFT_file|Updated PFT file for MEGAN]]
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
−
|Jenny Fisher (Wollongong)<br>Dylan Millet (UMN)
+
|Haihui Zhu (WashU)
−
|Science
+
|Aerosols
 +
|Medium
 
|
 
|
−
*Delivered to GCST (May 2018)
+
*[https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1292/ Zhu et al., EGUsphere, submitted 2023.]
 +
*[https://github.com/geoschem/geos-chem/pull/1902 geos-chem PR #1902]
  
 
|-valign="top"
 
|-valign="top"
−
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|Sebastian Eastham (MIT)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
−
|Science
+
|Emissions
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
 +
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
−
|[[Volcanic_SO2_emissions_from_Aerocom#OMI-based_volcanic_emissions|OMI-based Volcanic emissions 2005-2012]]
+
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
−
|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"
 
|-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]]
+
|Replace ISORROPIA with [https://gmd.copernicus.org/articles/17/2197/2024/ HETPv1.0]
−
|[[GCST]]
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (ICL)
−
|Structural
+
|Aerosol thermodynamics
 +
|Medium
 
|
 
|
−
*Differences in precision and order of operations may result in small number differences
+
*[https://github.com/geoschem/geos-chem/issues/2235 geos-chem issue #2235]
−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Features NOT affecting the full-chemistry simulation:
+
  
 
|-valign="top"
 
|-valign="top"
−
|TOMAS update: Allow the "emitted" size distribution be a function of a number of properties
+
|Only convert units for species that need it
−
|Emily Ramnarine (Colorado State)<br>Jeff Pierce (Colorado State)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Unit conversions
 +
|Medium
 
|
 
|
−
*Delivered to GCST (Jan 2019)
+
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]
  
 +
|-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
−
!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/issues/1867 Online H2 chemistry]
−
|David Ridley (CARB, formerly MIT)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
−
|Science
+
|Chemistry
 +
|TBD
 +
|Delivered<br>June 2023
 
|
 
|
−
*Data delivered to GCST (Jan 2019)
+
*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
 +
*Implemented in v12.5, needs to be brought up to current version
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions#Lightning_NOx_emissions|Grid-independent lightning NOx emissions]] (3-hourly)
+
|ALK4 & R4N2 chemistry
−
|Lee Murray (Rochester)
+
|Jared Brewer (UMN)
−
|Science
+
|Chemistry
 +
|TBD
 +
|Not delivered
 
|
 
|
−
*Data delivered to GCST (Jan 2019)
+
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
 +
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., submitted 2023.]
  
 
|-valign="top"
 
|-valign="top"
−
|[[Grid-independent_emissions#Biogenic_emissions|Grid-independent biogenic emissions]] (hourly)
+
|Mass flux regridding fix in MAPL
−
|Jintai Lin (PKU)
+
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
−
|Science
+
|GCHP input regridding
 +
|Medium
 
|
 
|
−
*Data delivered to GCST (Jan 2019)
 
−
 
−
|-valign="top"
 
−
|[[Grid-independent_emissions#Sea_salt_emissions|Grid-independent sea salt emissions]] (hourly)
 
−
|Jintai Lin (PKU)
 
−
|Science
 
 
|
 
|
−
*Data delivered to GCST (Jan 2019)
+
*[https://github.com/geoschem/GCHP/issues/377 GCHP Issue #377]
−
 
+
*'''Currently on hold, as the submitted update results in zero diff'''
−
|-valign="top"
+
−
|[[Grid-independent_emissions#Soil_NOx_emissions|Grid-independent soil NOx emissions]] (hourly)
+
−
|Jintai Lin (PKU)
+
−
|Science
+
−
|
+
−
*Data delivered to GCST (Jan 2019)
+
  
 
|}
 
|}
  
−
== 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.
+
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.
−
 
+
−
=== Ready to go in ===
+
  
 
{| 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 References
−
|-
+
−
!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]
+
|Geologic emission of ethane and propane
−
|Yingying Yan (China University of Geosciences)
+
|Matthew Rowlinson and Mat Evans(York)
−
|Science
+
|Emissions
 +
|Delivered<br>Jan 2023
 
|
 
|
−
*Implemented in GEOS-Chem v9-02
+
*Global source from https://doi.org/10.1038/s41561-018-0073-0 with spatial distribution from https://doi.org/10.5194/essd-11-1-2019
  
 
|-valign="top"
 
|-valign="top"
−
|[https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JD029133 N2O5 hydrolysis updates]
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
|Viral Shah (UW)<br>Lyatt Jaegle (UW)<br>Chris Holmes (FSU)  
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
 +
|Delivered<br>Feb 2021
 
|
 
|
−
*Delivered to GCST (Dec 2018)
+
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
−
|Cloud reactive uptake of NOx
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|Chris Holmes (FSU)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
−
|Science
+
|Emissions
 +
|Delivered<br>Jul 2021
 
|
 
|
−
*Implemented in [[GEOS-Chem v11-01|v11-01]]
+
*Data involves many files- need to think about temporal frequency
−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Emissions and surface fluxes updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon bottom up fluxes: anthro, ocean, land
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
−
|Kevin Bowman (JPL)
+
|Shixian Zhai (Harvard)
−
|Science
+
|Emissions
−
|Kevin Bowman wrote:
+
|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
+
−
**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
+
 
|
 
|
−
 
+
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt aerosol alkalinity
+
|DMS Chemistry
−
|Qianjie Chen (UW)<br>Becky Alexander (UW)<br>Xuan Wang (Harvard)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
−
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
−
*UW version delivered to GCST (Nov 2017)
 
  
 
|-valign="top"
 
|-valign="top"
−
|VBS SOA option
+
|Organic acids (RCOOH)
−
|Rokjin Park (SNU)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
−
*Code has been implemented in the ancient v9-01-02 version. 
 
−
*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
+
|Improve carbon & nitrogen conservation in reactions
−
|Helene Angot (MIT)
+
|Kelvin Bates (Harvard)
−
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
−
*Data is available, but has not been transferred to GCST yet
 
  
 
|-valign="top"
 
|-valign="top"
−
|Oxidant fields from v10 for 2006-2012
+
|Blowing snow sea salt in TOMAS
−
*3D chemical source for CO2, CO
+
|Betty Croft (Dalhousie)
−
*OH for tagged CO & CH4
+
|Aerosols
−
|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
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
−
|Eloise Marais (U. Birmingham)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
−
|Science
+
|Hg simulation
 +
|Not delivered
 
|
 
|
−
*Delivered to GCST (Dec 2017)
 
−
*Could be implemented with Jiawei Zhuang's FlexGrid
 
  
 
|-valign="top"
 
|-valign="top"
−
|West Africa nested-grid for GEOS-FP
+
|WRF-GC Hg simulation
−
|Mat Evans (York)<br>Eleanor Morris (York)
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
−
|Science
+
|Hg simulation<br>WRF-GC
 +
|Not delivered
 
|
 
|
−
*Could be implemented with Jiawei Zhuang's FlexGrid
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate simulation]]
+
|Updated HgII gas-partical partitioning
−
|Becky Alexander (UW)
+
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
−
|Science
+
|Hg simulation
 +
|Not delivered
 
|
 
|
 +
*Should be option, not default
  
 
|-valign="top"
 
|-valign="top"
−
|Arsenic simulation
+
|Dry deposition to F90 (readability)
−
|Shiliang Wu (MT)
+
|Chris Holmes (FSU)
−
|Science
+
|Dry deposition
 +
|Not delivered
 
|
 
|
  
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
 
−
 
−
|-valign="top"
 
−
|Update to redistribution of mass in transport
 
−
|Seb Eastham (MIT)
 
−
|Science
 
−
|
 
−
*Stop gap solution pending use of mass fluxes instead of winds in advection
 
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
 
−
 
−
|-valign="top"
 
−
|Benchmark of stratospheric simulation
 
−
|Dylan Jones (U. Toronto)
 
−
|Benchmarking
 
−
|
 
−
*1-yr benchmarks for GEOS-Chem v11-01d and later include comparisons with OSIRIS O3
 
−
*Waiting on OSIRIS NO2 data
 
−
*Waiting on comparisons with ACE-FTS data
 
−
 
−
|-valign="top"
 
−
|Add total column O3 to benchmarks
 
−
|Chris Holmes (FSU)<br>[[GCST]]
 
−
|Benchmarking
 
−
|
 
−
*Deferred until GEOS-Chem 12
 
−
*Also note: GCST plans on migrating benchmark plotting code from IDL to Python in v11-03
 
−
 
−
|-valign="top"
 
−
|Further structural updates to facilitate interfacing GEOS-Chem with external models (e.g. WRF, CAM, CESM)
 
−
|[[GCST]]
 
−
|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) ==
  
−
=== 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
−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.geosci-model-dev-discuss.net/gmd-2017-125/ GEOS resolution & subgrid convection]
+
|Replace ISORROPIA with [https://gmd.copernicus.org/preprints/gmd-2023-159/gmd-2023-159.pdf HTEPv1.0]
−
|Karen Yu (Harvard)
+
|Seb Eastham (MIT)<br>Lizzie Lundgren (Harvard)
−
|Science
+
|Aerosol thermodynamics
 
|
 
|
−
*To be installed by Bob Yantosca (Harvard), tested by Tailong He (Toronto)
+
*Will be git submodule
−
*Work to begin after [[GEOS-Chem 12#12.0.0|GC 12.0.0]] release
+
  
 
|-valign="top"
 
|-valign="top"
−
|Transport families in the stratosphere
+
|PPN+hv, PPN+OH
−
|Christoph Keller (NASA GMAO)
+
|Robert Ryan (UCL)
−
|Science
+
|Chemistry
 
|
 
|
−
*Implemented in GEOS-GC coupled system
 
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|H2 chemistry in UCX
+
|MBO
−
|Chris Holmes (FSU)
+
|Michael Vermeuel (UMN)
−
|Science
+
|Chemistry
 
|
 
|
−
*Defer until paper is submitted
 
−
*Estimate Fall 2018 or sooner
 
  
 
|-valign="top"
 
|-valign="top"
−
|Updated chlorine chemistry
+
|Initial conditions for CH4 correcting background and stratospheric biases
−
|Xuan Wang (Harvard)
+
|Todd Mooring (Harvard)
−
|Science
+
|Methane simulation
 
|
 
|
−
*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]]
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Katie Travis (MIT)
+
|Bob Yantosca (Harvard)
−
|Structural
+
|Aerosols<br>Structural
 
|
 
|
−
*Defer until the paper is submitted
+
*Ongoing
  
 
|-valign="top"
 
|-valign="top"
−
|OH + NO2 rate update
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
|Barron Henderson (EPA)
+
|Betty Croft (Dalhousie)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[Chemistry_Issues#Script_for_evaluating_carbon_balance|Script for checking N, C, etc. balance in chemistry mechanism]]
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
−
|Barron Henderson (EPA)
+
|Betty Croft (Dalhousie)
−
|Software
+
|Aerosols
−
|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"
+
−
|Aromatics and dicarbonyl chemistry
+
−
|William Porter (MIT)<br>Tzung-May Fu (PKU)
+
−
|Science
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Document chemical mechanism in KPP file
+
|ML algorithms for bulk aerosols
−
|Mat Evans (York)
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
−
|Structural
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Diurnal variability for NH3
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
−
|Henze group
+
|Shixian Zhai (Harvard)
−
|Science
+
|Aerosols
−
|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"
 
|-valign="top"
−
|[https://www.atmos-chem-phys.net/18/11185/2018/ Photolysis of NITs]
+
|Updates to Hodzic SOA scheme
−
|Prasad Kasibhatla (Duke)
+
|Jared Brewer (Harvard)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Update heterogeneous processes to address high bias in nitrate
+
|Automated reduction in isoprene scheme
−
|Chris Holmes (FSU)
+
|Dan Westervelt (Lamont-Doherty)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|UCX-mini chemical mechanism
+
|Brown carbon chemsitry
−
|Sebastian Eastham (MIT)
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
−
|Science
+
|Aerosols
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.atmos-chem-phys-discuss.net/acp-2018-459/ Update to hygroscopic growth]
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
−
|Robyn Latimer (Dalhousie)<br>Randall Martin (Dalhousie)
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
−
|Science
+
|Convection
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Emissions updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|EPA-derived BC/OA emissions over US (1990-2012)
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
−
|David Ridley (MIT)<br>Chi Li (Dalhousie)
+
|Jintai Lin (PKU)
−
|Science
+
|Emissions
 
|
 
|
−
*Emissions are available but need to be formatted properly.
+
*Horizontal resolution: 5km, temporal resolution: JJA mean
−
*Could be ready by Fall-Winter 2018, depending on D. Ridley's availability
+
*monthly data will be available at a later stage; please contact us
  
 
|-valign="top"
 
|-valign="top"
−
|[[FINNv1_biomass_burning_emissions|FINN biomass burning emissions for 2014-2016]]
+
|Updated biomass burning emission factors and species
−
|Barron Henderson (US EPA)
+
|Tess Carter (MIT)
−
|Science
+
|Emissions
 
|
 
|
−
*Pending receipt of corrected data files
 
  
 
|-valign="top"
 
|-valign="top"
−
|EPA NEI2011 Version EK
+
|Updated offline sea salt emissions
−
|Zitely Tzompa-Sosa (CSU)<br>Emily Fischer (CSU)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
−
|Science
+
|Emissions
 
|
 
|
−
*Estimate Late 2018 or sooner
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
−
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
+
|Sam Silva (MIT)
−
|Science
+
|Emissions &<br>Science
 
|
 
|
−
*MASAGE data is already available.
+
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
−
*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.
+
*Needs to be updated to a more recent GEOS-Chem version
−
*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]]
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
−
|Amos Tai (CUHK)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Model performance
 
|
 
|
−
*Waiting on data
+
*Ongoing (will be done as time allows)
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|Retire all BPCH diagnostics
−
|Fabien Paulot (NOAA/GFDL)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Diagnostics
 
|
 
|
−
*Data files delivered to GCST (Jan 2016)
+
*Can be done following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]
−
*Needs to be implemented via HEMCO, which is the primary delay
+
  
 
|-valign="top"
 
|-valign="top"
−
|Injection height for fire emissions
+
|Assess memory leak in GCHP
−
|Juliet Zhu (CSU)<br>Emily Fischer (CSU)
+
|Killian Murphy (York)
−
|Science
+
|Model performance
 
|
 
|
−
*Code was available in pre v9-02 (HEMCO)
+
*NOTE: Most memory leaks in GCHP have been fixed by [https://github.com/geoschem/geos-chem/pull/1353 geoschem/geos-chem PR #1353].  Need to assess if any memory leaks still remain.
−
*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
+
|Hybrid MPI-OpenMP in GCHP
−
|Jeff Geddes (BU)
+
|Seb Eastham (MIT)<br>Killian Murphy (York)
−
|Science
+
|Model performance
 
|
 
|
−
*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 run directory templating and creation with init_rd.sh and shared directories
−
|Amos Tai (CUHK)
+
|Jourdan He (WashU)
−
|Science
+
|Run directories
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Wet scavenging in mixed-phase clouds
+
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
−
|Bo Zhang (NIA/NASA Langley)
+
|GCST?
−
|Science
+
|Documentation
 
|
 
|
−
*Defer until paper is published
 
−
*Estimate Fall 2018
 
  
−
|-
+
|}
−
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
+
  
−
|-valign="top"
+
== Over the horizon (6-12 months) ==
−
|Radon emission update
+
−
|Bo Zhang (NIA/NASA Langley)
+
−
|Science
+
−
|
+
−
*Defer until paper is published
+
−
*Estimate Fall 2018
+
  
−
|-valign="top"
+
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.
−
|[[POPs simulation#PCB simulation|PCB simulation]]
+
−
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
+
−
|Science
+
−
|
+
  
−
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
−
|New EDGAR sectoral inventory for Hg (1970-2012)
+
|- bgcolor="#cccccc"
−
|Amanda Giang (MIT)
+
!width="200px"|Feature
−
|Science
+
!width="200px"|Contributor(s)
−
|
+
!width="100px"|Model scope
 +
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Archive GISS met fields from RCP scenarios for community
+
|Snow / Icy Bromine
−
|Lee Murray (Rochester)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
−
|Science
+
|Chemistry
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|New version of MAPL
+
|Monoterpene oxidation scheme
−
|GMAO<br>Lizzie Lundgren (GCST)
+
|Jessica Haskins (MIT)
−
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Flux ingestion
+
|Fire related VOCs including furans
−
|Sebastian Eastham (MIT)
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Use CMake to simplify GCHP build process
+
|Extension of UCX into the mesosphere
−
|Liam Bindle (Dalhousie)
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
−
|Structural
+
|Chemistry
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[FlexGrid|FlexGrid Stage 2: Enable nested simulations over any custom domains]]
+
|Methane flux ingestion
−
|Jiawei Zhuang (Harvard)<br>Melissa Sulprizio ([[GCST]])
+
|Eloise Marais (UCL)
−
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Clean up SOA diagnostics
+
|Dust non-sphericity impacts on surface chem and optical properties
−
|GCST
+
|Inderjeet Singh (WashU)
−
|Structural
+
|Aerosols
 
|
 
|
−
*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)
+
|Size-resolved stratospheric aerosol
−
|GCST
+
|Seb Eastham (MIT)
−
|Structural
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Harmonizing Henry's Law coefficients across wet and dry deposition
+
|Extend aerosol settling
−
|[[GCST]]
+
|Eloise Marais (UCL)
−
|Science
+
|Aerosols
 
|
 
|
−
*Work not started yet. Will need input from the community.
 
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
 
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC offline coupling in standard model + benchmark
+
|Stratospheric aerosol APM
−
|Rokjin Park (SNU)<br>Daniel Rothenberg (MIT)
+
|Fangqun Yu (SUNY)
−
|Science
+
|Aerosols
 
|
 
|
−
*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) ===
 
−
 
−
{| border=1 cellspacing=0 cellpadding=5
 
−
|- bgcolor="#cccccc"
 
−
!width="500px"|Item
 
−
!width="200px"|Author(s)
 
−
!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]
+
|Plume-in-grid model
−
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
|Hongwei Sun (Harvard)
−
|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)
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
−
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
+
|Lee Murray (Rochester)
−
|Science
+
|Emissions
 
|
 
|
−
*Defer until MEIC paper is published
 
  
 
|-valign="top"
 
|-valign="top"
−
|GISS-GC (ICECAP/GCAP2) in standard model + benchmark
+
|Seb aircraft emissions beyond recent 2019 update
−
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
+
−
|Science
+
−
|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)
 
|Seb Eastham (MIT)
−
|Science
+
|Emissions
 
|
 
|
−
*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:
+
|FRP-based fire emsisions for eastern US at 0.2 deg
−
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Charlie Fite (FSU)
−
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Emissions
−
|[[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
+
|Hg iodine chemistry
−
|Shiliang Wu (MNT)
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Interannually varying ocean model BCs for Hg from ocean model
+
|Hg simulation in GCHP
−
|Colin Thackray (Harvard)
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|PAH & PFCA simulations
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
−
|Peter Ivatt (York)<br>Mat Evans (York)<br>Noelle Selin (MIT)<br>Colin Thackray (Harvard)
+
|Yanxu Zhang (Nanjing U.)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|CH4 in full chemistry simulation
+
|Dry deposition diagnostics by land cover
−
|Seb Eastham (Harvard)
+
|Holly Nowell (FSU)
−
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Standard future land use maps (PFT, LAI) for RCP/CMIP6 simulations
+
|Dry deposition process diagnostics
−
|Colette Heald (MIT)<br>Loretta Mickley (Harvard)
+
|Holly Nowell (FSU)
−
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive GISS met fields from CMIP6 scenarios for community
+
|Isotope simulation for CO and CH4 in GCHP
 
|Lee Murray (Rochester)
 
|Lee Murray (Rochester)
−
|Science
+
|Carbon simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to cold-temperature deposition
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
−
|Lyatt Jaegle (UW)
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
−
|Science
+
|Emissions<br>CH4 simulation
−
|
+
−
 
+
−
|-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"
 
|-valign="top"
−
|APM update and integration with most recent GEOS-Chem version
+
|Modularization of aerosols code for interface with GOCART in GEOS
−
|Gan Luo (SUNY Albany)
+
|Christoph Keller (GMAO)
 
|Structural
 
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Cosmogenic tracer production
+
|Improve load balancing in GCHP
−
|Lee Murray (Rochester)
+
|Seb Eastham (MIT)
−
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Explore resolution-consistent dust emissions
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
−
*Make high-res concentrations or mass fluxes available offline, implement in met field processing
+
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
−
|David Ridley (MIT)<br>GCST<br>Nested Model WG
+
|Transport
−
|Science
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Dust emissions at nested-grid resolutions
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
−
|Yuxuan Wang (U. Houston)<br>Jun Wang (U. Iowa)
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
−
|Science
+
|Transport
 
|
 
|
−
*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]]
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
−
|Duncan Fairlie (NASA/LARC)  
+
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
−
|Science
+
|Transport
−
|
+
−
 
+
−
|-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 and References
  
 
|-valign="top"
 
|-valign="top"
−
|GCHP stretched grid
+
|Updates to Aromatic chemistry
−
|Jiawei Zhuang (Harvard)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|1/8 degree nested-grid simulations with GEOS-FP
+
|Nitrate photolysis
−
|Nested Model WG
+
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
−
|Science
+
|Chemistry
 
|
 
|
−
*Wait for more interest
 
  
 
|-valign="top"
 
|-valign="top"
−
|Embedding GEOS-Chem into CESM
+
|In aerosol chemistry Halogens
−
|Jean-Francois Lamarque (NCAR)
+
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
−
|Science
+
|Chemistry
 
|
 
|
−
*NOTE: Seb Eastham is already working on this
 
  
 
|-valign="top"
 
|-valign="top"
−
|Adjoint of carbon cycle simulation in GCHP
+
|Benchmark box model of GC Chemistry
−
|Kevin Bowman (JPL)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Isoprene chemistry v2 (new Caltech update)
+
|Alkyl nitrates Alk7, PHAN
−
|Kelvin Bates (Caltech)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Contemporary land cover: developing historical and updated GEOS-Chem land cover maps based on satellite remote sensing
+
|Add stratospheric ozone species to full-chemistry simulations
−
|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
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Resolution-independent lightning NOx
+
|Perchlorate chemistry
−
|Lee Murray (Rochester)
+
|Yuk Chun Chan (UWAB)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Bidirectional NH3 emissions
+
|Explicit heterogeneous sulfate chemistry
−
|Juliet Zhu (CSU)
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Country-based weekday/weekend variability for EDGAR 4.2
+
|HOx and ozone "emissions" from lightning as option in model to play with
−
|Lee Murray (Rochester)<br>Christoph Keller (Harvard)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Update keytone photolysis
+
|Sea salt aerosol from sea ice leads
−
|Jared Brewer (CSU)<br>Emily Fischer (CSU)
+
|Hannah Horowitz (U. Illinois)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Small alkyl nitrates
+
|Drought-stress algorithm
−
|Jenny Fisher (Wollongong)
+
|Wei Li (U. Houston)
−
|Science
+
 
|
 
|
−
 
−
|-valign="top"
 
−
|YIBS-GC chemistry-biosphere-fire coupling
 
−
|Loretta Mickley (Harvard)<br>Xu Yue (IAP)
 
−
|Science
 
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Nitrogen-LAI coupling
+
|Biomass burning injection height profiles
−
|Lin Zhang (PKU)<br>Amos Tai (CUHK)
+
|Inderjeet Singh (WashU)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Implementing humidity/VPD dependence of dry deposition
+
|OCIM integration
−
|Jennifer Murphy (U. Toronto)
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
−
|Science
+
 
|
 
|
−
 
−
|-valign="top"
 
−
|SO2 wet scavenging
 
−
|Duncan Fairlie (NASA Langley)
 
−
|Science
 
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Heterogeneous sulfate production
+
|Updating landcover products in GEOS-Chem
−
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
−
|Science
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|MOSAIC implementation
+
|Dry deposition physical improvement
−
|Sebastian Eastham (Harvard)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Particle size climatology
+
−
|Fangqun Yu (SUNY Albany)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Sea salt/dust size distribution
+
−
|David Ridley (MIT)<br>Colette Heald (MIT)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Updates to GTMM
+
−
|Rebecca Stern (Harvard)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Tracer transport ocean
+
 
|Chris Holmes (FSU)
 
|Chris Holmes (FSU)
−
|Science
+
|Dry deposition
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Include Hg in full chemistry simulation
+
|TOMAS WRF-GC in regional Thailand simulation
−
|Noelle Selin (MIT)
+
|Win Trivitayanurak (Chulalongkorn U)
−
|Science
+
|Aerosols
−
|
+
−
 
+
−
|-valign="top"
+
−
|Goddard seasonal weather prediction in GCHP
+
−
|Kevin Bowman (JPL)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|Climate index diagnostics (drought, etc.)
+
−
|Chemistry-ecosystems-climate WG
+
−
|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)
 

Latest revision as of 15:42, 9 April 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 14.4.0

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
KORUS-AQ emissions for East Asia (as an option) Katie Travis (NASA) Emissions Simple
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech) 		Emissions Simple
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple
  • geos-chem issue #1745
  • Currently on hold while an issue with seasonality in the new CEDS data is being investigated
Parameterization of SNA and OM dry size Haihui Zhu (WashU) Aerosols Medium
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions Medium
Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4 Lizzie Lundgren (Harvard) GC-Classic Medium
Replace ISORROPIA with HETPv1.0 Lizzie Lundgren (Harvard)
Seb Eastham (ICL) 		Aerosol thermodynamics Medium
Only convert units for species that need it Bob Yantosca (Harvard) Unit conversions 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
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN) 		Chemistry TBD Delivered
June 2023
ALK4 & R4N2 chemistry Jared Brewer (UMN) Chemistry TBD Not delivered
Mass flux regridding fix in MAPL Tom Clune (GMAO)
Seb Eastham (MIT) 		GCHP input regridding Medium
  • GCHP Issue #377
  • Currently on hold, as the submitted update results in zero diff

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 References
Geologic emission of ethane and propane Matthew Rowlinson and Mat Evans(York) Emissions Delivered
Jan 2023
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam(CUHK)
Amos Tai (CUHK) 		Science Delivered
Feb 2021
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor University)
Loretta Mickley (Harvard) 		Emissions Delivered
Jul 2021
  • Data involves many files- need to think about temporal frequency
MEIC (China regional) for 2000-2017 at 0.5x0.625 deg Shixian Zhai (Harvard) Emissions Delivered
  • Need permission from Qiang Zhang (Tsinghua U.) to distribute data
DMS Chemistry Linia Tashmim (UC Riverside)
William Porter (UC Riverside) 		Chemistry Not delivered
Organic acids (RCOOH) Katie Travis (NASA) Chemistry Not delivered
Improve carbon & nitrogen conservation in reactions Kelvin Bates (Harvard) Chemistry Not delivered
Blowing snow sea salt in TOMAS Betty Croft (Dalhousie) Aerosols Not delivered
Australian anthropogenic Hg emissions Stephen MacFarlane (UOW)
Jenny Fisher (UOW)
Hannah Horowitz (U. Illinois)
Viral Shah (Harvard) 		Hg simulation Not delivered
WRF-GC Hg simulation Xiaotian Xu (Nanjing U.)
Yanxu Zhang (Nanjing U.) 		Hg simulation
WRF-GC 		Not delivered
Updated HgII gas-partical partitioning Kaiyun Liu (Tsinghua U.)
Qingru Wu (Tsinghua U.)
Shuxiao Wang (Tsinghua U.) 		Hg simulation Not delivered
  • Should be option, not default
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry deposition Not delivered

Almost there (< 6 months)

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

Feature Contributor(s) Model scope Notes and References
Replace ISORROPIA with HTEPv1.0 Seb Eastham (MIT)
Lizzie Lundgren (Harvard) 		Aerosol thermodynamics
  • Will be git submodule
PPN+hv, PPN+OH Robert Ryan (UCL) Chemistry
MBO Michael Vermeuel (UMN) Chemistry
Initial conditions for CH4 correcting background and stratospheric biases Todd Mooring (Harvard) Methane simulation
Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism Bob Yantosca (Harvard) Aerosols
Structural
  • Ongoing
Re-binning of off-line sea salt and dust for use in TOMAS Betty Croft (Dalhousie) Aerosols
Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90 Betty Croft (Dalhousie) Aerosols
ML algorithms for bulk aerosols Arshad Nair (SUNY Albany)
Fangqun Yu (SUNY Albany) 		Aerosols
PM2.5 and PM10 calculations: aerodynamic vs geometric diameters Shixian Zhai (Harvard) Aerosols
Updates to Hodzic SOA scheme Jared Brewer (Harvard) Aerosols
Automated reduction in isoprene scheme Dan Westervelt (Lamont-Doherty) Aerosols
Brown carbon chemsitry Jingqiu Mao (U. Alaska)
Xuan Wang (CUHK) 		Aerosols
GEOS resolution and subgrid convection - Part 2 RAS parameter tuning Tailong He (Toronto)
Dylan Jones (Toronto)
Andrea Molod (NASA GMAO) 		Convection
High-res top-down TROPOMI-derived seasonal mean NOx emissions for China Jintai Lin (PKU) Emissions
  • Horizontal resolution: 5km, temporal resolution: JJA mean
  • monthly data will be available at a later stage; please contact us
Updated biomass burning emission factors and species Tess Carter (MIT) Emissions
Updated offline sea salt emissions Hongjian Weng (PKU)
Jintai Lin (PKU) 		Emissions
Canopy Physics Model Sam Silva (MIT) Emissions &
Science
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Model performance
  • Ongoing (will be done as time allows)
Retire all BPCH diagnostics Bob Yantosca (Harvard) Diagnostics
Assess memory leak in GCHP Killian Murphy (York) Model performance
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York) 		Model performance
Improve run directory templating and creation with init_rd.sh and shared directories Jourdan He (WashU) Run directories
Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc GCST? Documentation

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
Snow / Icy Bromine Becky Alexander (UW)
William Swanson (U. Alaska)
Shuting Zhai (UW) 		Chemistry
Monoterpene oxidation scheme Jessica Haskins (MIT) Chemistry
Fire related VOCs including furans Lu Hu (UMT)
Lixu Jin (UMT) 		Chemistry
Extension of UCX into the mesosphere Seb Eastham (MIT)
Eric Fleming (NASA) 		Chemistry
Methane flux ingestion Eloise Marais (UCL) Chemistry
Dust non-sphericity impacts on surface chem and optical properties Inderjeet Singh (WashU) Aerosols
Size-resolved stratospheric aerosol Seb Eastham (MIT) Aerosols
Extend aerosol settling Eloise Marais (UCL) Aerosols
Stratospheric aerosol APM Fangqun Yu (SUNY) Aerosols
Plume-in-grid model Hongwei Sun (Harvard) Chemistry
Updated lightning NOx: Prescribe from ground and geostationary lightning flashes Lee Murray (Rochester) Emissions
Seb aircraft emissions beyond recent 2019 update Seb Eastham (MIT) Emissions
FRP-based fire emsisions for eastern US at 0.2 deg Charlie Fite (FSU) Emissions
Hg iodine chemistry Yiming Fu
Yanxu Zhang (Nanjing U.) 		Hg simulation
Hg simulation in GCHP Ari Feinberg (MIT)
Lyssa Freese (MIT) 		Hg simulation
Update Hg ocean and soil boundary conditions for consistency with new chemistry Yanxu Zhang (Nanjing U.) Hg simulation
Dry deposition diagnostics by land cover Holly Nowell (FSU) Diagnostics
Dry deposition process diagnostics Holly Nowell (FSU) Diagnostics
Isotope simulation for CO and CH4 in GCHP Lee Murray (Rochester) Carbon simulation
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Melissa Sulprizio (Harvard)
Tia Scarpelli (U. Edinburgh)
Zichong Chen (Harvard) 		Emissions
CH4 simulation
Modularization of aerosols code for interface with GOCART in GEOS Christoph Keller (GMAO) Structural
Improve load balancing in GCHP Seb Eastham (MIT) Model performance
Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer Bo Zhang (NIA)
Hongyu Liu (NIA / NASA Langley) 		Transport
Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer Gan Luo (SUNY Albany)
Fangqun Yu (SUNY-Albany) 		Transport
Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons Seb Eastham (MIT)
Clara Orbe (NASA GISS)
Andrew Schuh (CSU) 		Transport

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
Updates to Aromatic chemistry Stephen MacFarlane (UOW)
Jenny Fisher (UOW) 		Chemistry
Nitrate photolysis Mat Evans (York)
Thomas Sherwen (York)
Matthew Rowlinson (York) 		Chemistry
In aerosol chemistry Halogens Mat Evans (York)
Hansen Cao (CU Boulder) 		Chemistry
Benchmark box model of GC Chemistry Katie Travis (NASA) Chemistry
Alkyl nitrates Alk7, PHAN Katie Travis (NASA) Chemistry
Add stratospheric ozone species to full-chemistry simulations Lee Murray (Rochester) Chemistry
Perchlorate chemistry Yuk Chun Chan (UWAB) Chemistry
Explicit heterogeneous sulfate chemistry Katie Travis (NASA)
Becky Alexander (UT) 		Chemistry
HOx and ozone "emissions" from lightning as option in model to play with Jingqiu (Alaska)
Lee Murray (Rochester) 		Emissions
Sea salt aerosol from sea ice leads Hannah Horowitz (U. Illinois) Emissions
Drought-stress algorithm Wei Li (U. Houston)
Biomass burning injection height profiles Inderjeet Singh (WashU) Emissions
OCIM integration Chris Holmes (FSU)
Lee Murray (Rochester)
Updating landcover products in GEOS-Chem Chris Holmes (FSU)
Jeff Geddes (BU) 		Input data
Dry deposition physical improvement Chris Holmes (FSU) Dry deposition
TOMAS WRF-GC in regional Thailand simulation Win Trivitayanurak (Chulalongkorn U) Aerosols
Retrieved from "https://wiki.seas.harvard.edu/geos-chem/index.php?title=GEOS-Chem_model_development_priorities&oldid=53296"