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.
  
−
=== 12.0.0 ===
+
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="300px"|Mergeable at any time
 +
!width="200px"|Version in development
  
−
<span style="color:darkorange">'''This version is currently in development. See [[GEOS-Chem_12#12.0.0|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]]'''
  
−
=== 12.1.0 ===
+
|}
 +
 
 +
== Feature integration in progress ==
  
−
The items listed below are slated to be included in GEOS-Chem 12.1.0. 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
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Features affecting the full-chemistry simulation:
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[FlexGrid|FlexGrid: Use HEMCO to read met fields and enable nested simulations over any custom domains]]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
−
|Jiawei Zhuang (Harvard)<br>Jintai Lin (PKU)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
−
|Structural
+
|Emissions
 +
|Simple
 
|
 
|
−
*NOTE: FlexGrid might result in slight differences in met fields w/r/t the current regridding method.  This could have an impact on the full-chemistry simulations.
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Mineral_dust_aerosols#Anthropogenic_PM2.5_dust_source_in_GEOS-Chem|Anthropogenic PM2.5 dust source]]
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
−
|Sajeev Philip (Dalhousie)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
−
|Science
+
|Emissions
 +
|Medium
 
|
 
|
−
*'''''Update 29 Jun 2018:''''' [[Mineral_dust_aerosols#Update_29_Jun_2018|Fixed an initialization issue]] that caused much more dust to be emitted than the expected 13.1 Tg/yr.
+
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
−
*Code updates have been added to GC git repository, but are commented out until we officially release this feature in 12.1.0.
+
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
−
|[[GEOS-Chem_Output_Files#NetCDF_File_Format|NetCDF Output Phase 3b: Updates to eliminate differences between single and multi-segmented GEOS-Chem runs]]
+
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
−
|[[GCST]]<br>Christoph Keller
+
|Lizzie Lundgren (Harvard)
−
|Bug Fix &<br>Structural
+
|GC-Classic
 +
|Medium
 
|
 
|
−
 
+
*[https://github.com/geoschem/HEMCO/issues/18 hemco issue #18]
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Features NOT affecting the full-chemistry simulation:
+
  
 
|-valign="top"
 
|-valign="top"
−
|Updated flux diagnostics
+
|Capture all trop and PBL height changes in budget diagnostics
−
|Chris Holmes (Florida State)<br>[[GCST]]
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
−
|Structural/<br>Benchmarking
+
|Diagnostics
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
  
 
|}
 
|}
  
−
=== 12.2.0 ===
+
== Prioritized and in the queue ==
  
−
The items listed below are slated to be included in GEOS-Chem 12.2.0.  This is a feature release which will be benchmarked with a 1-month benchmark simulation and a 1-year Rn-Pb-Be 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 NOT affecting the full-chemistry simulation:
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[Transport_Working_Group#Common_set_of_tracers_in_GEOS-Chem_and_GEOS|Common set of tracers in GEOS-Chem and GEOS]]
+
|ALK4 & R4N2 chemistry
−
|Transport WG<br>[[GCST]]
+
|Jared Brewer (UMN)
−
|Benchmarking
+
|Chemistry
 +
|TBD
 +
|Not delivered
 
|
 
|
−
*[[Transport_Working_Group#List_of_tracers_in_GEOS|A set of passive species]] will be added to the GEOS-Chem Rn-Pb-Be benchmark simulation. This will facilitate comparisons between GEOS-Chem "Classic" and/or GCHP vs. the NASA GEOS-DAS system.
+
*[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., 2023.]
−
|}
+
−
 
+
−
=== 12.3.0 ===
+
−
 
+
−
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
+
−
|-bgcolor="#CCCCCC"
+
−
!width="500px"|Feature
+
−
!width="200px"|Submitted by
+
−
!width="100px"|Type
+
−
!width="300px"|Status
+
−
 
+
−
|-
+
−
!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]]
+
|Mass flux regridding fix in MAPL
−
|Seb Eastham (Harvard)
+
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
−
|Science
+
|GCHP input regridding
 +
|Medium
 
|
 
|
−
*Delivered to GCST (May 2017)
 
−
 
−
|-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) ]]
 
−
|Jenny Fisher (Wollongong) <br>Barron Henderson (US EPA)
 
−
|Science
 
 
|
 
|
−
*Will require reworking of LAI regridding in GEOS-Chem Classic and pre-processing land map data
+
*[https://github.com/geoschem/GCHP/issues/377 GCHP Issue #377]
 +
*'''Currently on hold, as the submitted update results in zero diff'''
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Updated_PFT_file|Updated PFT file for MEGAN]]
+
|New version of CEDS at 0.1 deg
−
|Jenny Fisher (Wollongong)<br>Dylan Millet (UMN)
+
|Dandan Zhang (WashU)
−
|Science
+
|Emissions
 +
|Simple
 +
|Delivered
 
|
 
|
−
*Delivered to GCST (May 2018)
+
*[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 by the authors.'''
−
|-valign="top"
+
−
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
+
−
|Sebastian Eastham (MIT)
+
−
|Science
+
−
|
+
−
 
+
−
|-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
+
−
|
+
−
*Working with developers to obtain alternate data for Oct-Dec 2012.
+
  
 
|}
 
|}
  
−
== Priorities not yet assigned to a particular version ==
+
== Ready to go in ==
−
 
+
−
The following items have been identified as priorities for GEOS-Chem, but have not yet been assigned to a particular GEOS-Chem version.
+
  
−
=== Ready to go in ===
+
Features listed in this table are ready to go in but have either not been delivered or are not yet prioritized for integration into GEOS-Chem.
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
−
!width="500px"|Feature
+
!width="200px"|Feature
−
!width="200px"|Submitted by
+
!width="200px"|Contributor(s)
−
!width="100px"|Type
+
!width="100px"|Model scope
−
!width="300px"|Status
+
!width="100px"|Delivery status
−
 
+
!width="300px"|Notes and References
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Emissions and surface fluxes updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon bottom up fluxes: anthro, ocean, land
+
|KORUS-AQ emissions for East Asia (as an option)
−
|Kevin Bowman (JPL)
+
|Katie Travis (NASA)
−
|Science
+
|Emissions
−
|Kevin Bowman wrote:
+
|Simple
−
*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"|Aerosol updates
+
−
 
+
−
|-valign="top"
+
−
|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"
 
|-valign="top"
−
|VBS SOA option
+
|Geologic emission of ethane and propane
−
|Rokjin Park (SNU)
+
|Matthew Rowlinson and Mat Evans(York)
−
|Science
+
|Emissions
 +
|Delivered<br>Jan 2023
 
|
 
|
−
*Code has been implemented in the ancient v9-01-02 version.
+
*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
−
*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
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
−
|Helene Angot (MIT)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
 +
|Delivered<br>Feb 2021
 
|
 
|
−
*Data is available, but has not been transferred to GCST yet
+
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
−
|Oxidant fields from v10 for 2006-2012
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
*3D chemical source for CO2, CO
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
−
*OH for tagged CO & CH4
+
|Emissions
−
|Dylan Jones (UofT)
+
|Delivered<br>Jul 2021
−
|Science
+
 
|
 
|
−
*Will make data files available on ftp site
+
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
−
|Africa nested-grid for GEOS-FP and MERRA-2
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
−
|Eloise Marais (U. Birmingham)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
−
|Science
+
|Chemistry
 +
|Delivered<br>June 2023
 
|
 
|
−
*Delivered to GCST (Dec 2017)
+
*[https://acp.copernicus.org/articles/22/12367/2022/acp-22-12367-2022.html Pérez-Peña, M.P. et al., ACP, 2022.]
−
*Could be implemented with Jiawei Zhuang's FlexGrid
+
*Implemented in v12.5, needs to be brought up to current version
  
 
|-valign="top"
 
|-valign="top"
−
|West Africa nested-grid for GEOS-FP
+
|DMS Chemistry
−
|Mat Evans (York)<br>Eleanor Morris (York)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
−
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
−
*Could be implemented with Jiawei Zhuang's FlexGrid
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate simulation]]
+
|Organic acids (RCOOH)
−
|Becky Alexander (UW)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Arsenic simulation
+
|Improve carbon & nitrogen conservation in reactions
−
|Shiliang Wu (MT)
+
|Kelvin Bates (Harvard)
−
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|None
+
|Blowing snow sea salt in TOMAS
−
|
+
|Betty Croft (Dalhousie)
−
|
+
|Aerosols
 +
|Not delivered
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Benchmark of stratospheric simulation
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
−
|Dylan Jones (U. Toronto)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
−
|Benchmarking
+
|Hg simulation
 +
|Not delivered
 
|
 
|
−
*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"
 
|-valign="top"
−
|Add total column O3 to benchmarks
+
|WRF-GC Hg simulation
−
|Chris Holmes (FSU)<br>[[GCST]]
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
−
|Benchmarking
+
|Hg simulation<br>WRF-GC
 +
|Not delivered
 
|
 
|
−
*Deferred until GEOS-Chem 12
 
−
*Also note: GCST plans on migrating benchmark plotting code from IDL to Python in v11-03
 
  
 
|-valign="top"
 
|-valign="top"
−
|ObsPack diagnostic as netCDF replacement for planeflight_mod.F
+
|Updated HgII gas-partical partitioning
−
|Andy Jacobson (NOAA/ESRL)
+
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
−
|Structural
+
|Hg simulation
 +
|Not delivered
 
|
 
|
−
*Delivered to GCST (May 2017)
+
*Should be option, not default
  
 
|-valign="top"
 
|-valign="top"
−
|Further structural updates to facilitate interfacing GEOS-Chem with external models (e.g. WRF, CAM, CESM)
+
|Dry deposition to F90 (readability)
−
|[[GCST]]
+
|Chris Holmes (FSU)
−
|Structural
+
|Dry deposition
 +
|Not delivered
 
|
 
|
−
*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]
+
|PPN+hv, PPN+OH
−
|Karen Yu (Harvard)
+
|Robert Ryan (UCL)
−
|Science
+
|Chemistry
 
|
 
|
−
*To be installed by Bob Yantosca (Harvard), tested by Tailong He (Toronto)
 
−
*Work to begin after [[GEOS-Chem 12#12.0.0|GC 12.0.0]] release
 
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|N2O5 hydrolysis updates
+
|MBO
−
|Viral Shah (UW)
+
|Michael Vermeuel (UMN)
−
|Science
+
|Chemistry
 
|
 
|
−
*Defer until paper is submitted (Summer 2018)
 
−
*Code from v10 (SMVGEAR) needs to be translated to v11 (FlexChem); this may take some effort
 
  
 
|-valign="top"
 
|-valign="top"
−
|H2 chemistry in UCX
+
|Initial conditions for CH4 correcting background and stratospheric biases
−
|Chris Holmes (FSU)
+
|Todd Mooring (Harvard)
−
|Science
+
|Methane simulation
 
|
 
|
−
*Defer until paper is submitted
 
−
*Estimate Fall 2018 or sooner
 
  
 
|-valign="top"
 
|-valign="top"
−
|Updated chlorine chemistry
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
−
|Xuan Wang (Harvard)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Aerosols<br>Structural
 
|
 
|
−
*Defer until the paper is submitted
+
*Ongoing
  
 
|-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]]
+
|Re-binning of off-line sea salt and dust for use in TOMAS
−
|Katie Travis (MIT)
+
|Betty Croft (Dalhousie)
−
|Structural
+
|Aerosols
 
|
 
|
−
*Defer until the paper is submitted
 
  
 
|-valign="top"
 
|-valign="top"
−
|OH + NO2 rate update
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
−
|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]]
+
|ML algorithms for bulk aerosols
−
|Barron Henderson (EPA)
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
−
|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
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
−
|Mat Evans (York)
+
|Shixian Zhai (Harvard)
−
|Structural
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Diurnal variability for NH3
+
|Updates to Hodzic SOA scheme
−
|Henze group
+
|Jared Brewer (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]
+
|Automated reduction in isoprene scheme
−
|Prasad Kasibhatla (Duke)
+
|Dan Westervelt (Lamont-Doherty)
−
|Science
+
|Aerosols
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Emissions updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent lightning NOx emissions (3-hourly)
+
|Brown carbon chemsitry
−
|Lee Murray (Rochester)
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
−
|Science
+
|Aerosols
 
|
 
|
−
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent dust emissions (hourly)
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
−
|David Ridley (MIT)
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
−
|Science
+
|Convection
 
|
 
|
−
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent biogenic emissions (hourly)
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
 
|Jintai Lin (PKU)
 
|Jintai Lin (PKU)
−
|Science
+
|Emissions
 
|
 
|
−
*Data has not yet been transferred to GCST
+
*Horizontal resolution: 5km, temporal resolution: JJA mean
 +
*monthly data will be available at a later stage; please contact us
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent sea salt emissions (hourly)
+
|Updated biomass burning emission factors and species
−
|Jintai Lin (PKU)
+
|Tess Carter (MIT)
−
|Science
+
|Emissions
 
|
 
|
−
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
−
|EPA-derived BC/OA emissions over US (1990-2012)
+
|Updated offline sea salt emissions
−
|David Ridley (MIT)<br>Chi Li (Dalhousie)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
−
|Science
+
|Emissions
 
|
 
|
−
*Emissions are available but need to be formatted properly.
 
−
*Could be ready by Fall-Winter 2018, depending on D. Ridley's availability
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[FINNv1_biomass_burning_emissions|FINN biomass burning emissions for 2014-2016]]
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
−
|Barron Henderson (US EPA)
+
|Sam Silva (MIT)
−
|Science
+
|Emissions &<br>Science
 
|
 
|
−
*Pending receipt of corrected data files
+
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
 +
*Needs to be updated to a more recent GEOS-Chem version
  
 
|-valign="top"
 
|-valign="top"
−
|EPA NEI2011 Version EK
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
−
|Zitely Tzompa-Sosa (CSU)<br>Emily Fischer (CSU)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Model performance
 
|
 
|
−
*Estimate Late 2018 or sooner
+
*Ongoing (will be done as time allows)
  
 
|-valign="top"
 
|-valign="top"
−
|GFAS biomass burning emissions
+
|Assess memory leak in GCHP
−
|Mat Evans (York)
+
|Killian Murphy (York)
−
|Science
+
|Model performance
−
|Mat Evans wrote:
+
−
*For the sake of the documentation and the wiki I think we should replicate the standard benchmark year on our system, and then switch on the GFAS emissions instead of the GFED and then have the GFAS emissions distributed by hieight.  We can do that and then prepare some plots for the documentation.  Estimate summer 2018.
+
−
 
+
−
|-valign="top"
+
−
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
+
−
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
+
−
|Science
+
 
|
 
|
−
*MASAGE data is already available.
+
*NOTE: Most memory leaks in GCHP have been fixed by [https://github.com/geoschem/geos-chem/pull/1353 geoschem/geos-chem PR #1353]. Will wait until MAPL3 to further assess.
−
*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]]
+
|Hybrid MPI-OpenMP in GCHP
−
|Amos Tai (CUHK)
+
|Seb Eastham (MIT)<br>Killian Murphy (York)
−
|Science
+
|Model performance
 
|
 
|
−
*Waiting on data
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|Improve pressure handling in GCHP advection
−
|Fabien Paulot (NOAA/GFDL)
+
|Seb Eastham (MIT)<br>Yuanjian Zhang (WashU)
−
|Science
+
|GCHP
 
|
 
|
−
*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
+
|Use ExtData2G as default GCHP input module
−
|Juliet Zhu (CSU)<br>Emily Fischer (CSU)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
−
|
+
|Will replace ExtData.rc with yaml file
−
*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"
+
|}
−
|Land cover module: Harmonized biosphere-atmosphere exchange and implementing CLM or manual land cover change experiments
+
−
|Jeff Geddes (BU)
+
−
|Science
+
−
|
+
−
*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"
+
== Over the horizon (6-12 months) ==
−
|Online O3-LAI coupling in GEOS-Chem
+
−
|Amos Tai (CUHK)
+
−
|Science
+
−
|
+
  
−
|-
+
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.
−
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
+
  
−
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
−
|Wet deposition parameterizations: pH dependency, Henry's law coefficients, etc.
+
|- bgcolor="#cccccc"
−
|Sarah Safieddine (MIT)<br>GCST
+
!width="200px"|Feature
−
|Science
+
!width="200px"|Contributor(s)
−
|
+
!width="100px"|Model scope
 +
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|Wet scavenging in mixed-phase clouds
+
|Snow / Icy Bromine
−
|Bo Zhang (NIA/NASA Langley)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
−
|Science
+
|Chemistry
 
|
 
|
−
*Defer until paper is published
 
−
*Estimate Fall 2018
 
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Radon emission update
+
|Monoterpene oxidation scheme
−
|Bo Zhang (NIA/NASA Langley)
+
|Jessica Haskins (MIT)
−
|Science
+
|Chemistry
 
|
 
|
−
*Defer until paper is published
 
−
*Estimate Fall 2018
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[POPs simulation#PCB simulation|PCB simulation]]
+
|Fire related VOCs including furans
−
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|New EDGAR sectoral inventory for Hg (1970-2012)
+
|Extension of UCX into the mesosphere
−
|Amanda Giang (MIT)
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive GISS met fields from RCP scenarios for community
+
|Methane flux ingestion
−
|Lee Murray (Rochester)
+
|Eloise Marais (UCL)
−
|Science
+
|Chemistry
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|New version of MAPL
+
|Dust non-sphericity impacts on surface chem and optical properties
−
|GMAO<br>Lizzie Lundgren (GCST)
+
|Inderjeet Singh (WashU)
−
|Structural
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Flux ingestion
+
|Size-resolved stratospheric aerosol
−
|Sebastian Eastham (MIT)
+
|Seb Eastham (MIT)
−
|Science
+
|Aerosols
 
|
 
|
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Clean up SOA diagnostics
+
|Extend aerosol settling
−
|GCST
+
|Eloise Marais (UCL)
−
|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)
+
|Stratospheric aerosol APM
−
|GCST
+
|Fangqun Yu (SUNY)
−
|Structural
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Harmonizing Henry's Law coefficients across wet and dry deposition
+
|Plume-in-grid model
−
|[[GCST]]
+
|Hongwei Sun (Harvard)
−
|Science
+
|Chemistry
 
|
 
|
−
*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
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
−
|Rokjin Park (SNU)<br>Daniel Rothenberg (MIT)
+
|Lee Murray (Rochester)
−
|Science
+
|Emissions
 
|
 
|
−
*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]
+
|Seb aircraft emissions beyond recent 2019 update
−
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
−
|Science
+
−
|
+
−
*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"
+
−
|MEIC emissions over China (2000-2015)
+
−
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
+
−
|Science
+
−
|
+
−
*Defer until MEIC paper is published
+
−
 
+
−
|-valign="top"
+
−
|GISS-GC (ICECAP/GCAP2) in standard model + benchmark
+
−
|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"
 
|-valign="top"
−
|Simple parameterization for CO2-O3 dependence of stomatal resistance
+
|Modularization of aerosols code for interface with GOCART in GEOS
−
|Amos Tai (CUHK)
+
|Christoph Keller (GMAO)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|NH3 emissions over China
+
|Improve load balancing in GCHP
−
|Lin Zhang (PKU)
+
|Seb Eastham (MIT)
−
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Using GEOS-Chem within GEOS-5
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
−
|Loretta Mickley (Harvard)
+
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
−
|Science
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
−
|Beata Bukosa (Wollongong)<br>Dylan Jones (UofT)
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
−
|Science
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Seasonal EMEP emissions back to 1980
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
−
|Mat Evans (York)
+
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
−
|Science
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to NO2 dry deposition
+
|MAPL version 3
−
|Brian Boys (Dalhousie)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
−
|
+
|Will include History wildcard handling in GCHP
  
−
|-valign="top"
 
−
|APM update and integration with most recent GEOS-Chem version
 
−
|Gan Luo (SUNY Albany)
 
−
|Structural
 
−
|
 
  
 
|-valign="top"
 
|-valign="top"
−
|Cosmogenic tracer production
+
|Migrate benchmark meteorology from MERRA2 to GEOS-IT
−
|Lee Murray (Rochester)
+
|GCST
−
|Science
+
|Benchmarking
 
|
 
|
−
 
−
|-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
 
−
|
 
−
 
−
|-valign="top"
 
−
|[[GEOS-Chem_species_units|Uniformity of units]]
 
−
|[[GCST]]
 
−
|Structural
 
−
|Lizzie Lundgren wrote:
 
−
*We are not planning on resuming work to unify units in GEOS-Chem anytime soon. Any changes to units in the near future would be for better compatibility with other models, although none are currently planned. However, user consensus on preferred units would still be helpful to move the conversation forward.
 
  
 
|}
 
|}
  
−
--[[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
+
 
|
 
|
  
 
|}
 
|}
−
 
−
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 15:32, 23 May 2018 (UTC)
 

Latest revision as of 20:39, 2 May 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
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech) 		Emissions Simple
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
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
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
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple Delivered
  • geos-chem issue #1745
  • Currently on hold while an issue with seasonality in the new CEDS data is being investigated by the authors.

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
KORUS-AQ emissions for East Asia (as an option) Katie Travis (NASA) Emissions Simple
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
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN) 		Chemistry Delivered
June 2023
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
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)
Assess memory leak in GCHP Killian Murphy (York) Model performance
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York) 		Model performance
Improve pressure handling in GCHP advection Seb Eastham (MIT)
Yuanjian Zhang (WashU) 		GCHP
Use ExtData2G as default GCHP input module Lizzie Lundgren (Harvard) GCHP Will replace ExtData.rc with yaml file

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
MAPL version 3 Lizzie Lundgren (Harvard) GCHP Will include History wildcard handling in GCHP


Migrate benchmark meteorology from MERRA2 to GEOS-IT GCST Benchmarking

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
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