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

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(Slated for v11-03)
(Feature integration in progress)
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On this page we list the current priorities for GEOS-Chem development. This list was compiled by the user Working Groups at the last [http://acmg.seas.harvard.edu/geos/meetings/2017/index.html International GEOS-Chem Meeting (IGC8)] in May 2017 and will be 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 ==
  
== List of priorities from IGC8 ==
+
See the links below for items merged and awaiting release.
 
+
The items listed below are in different stages of readiness and will be included in future versions of the model.
+
 
+
=== Slated for v11-03 ===
+
 
+
The following updates are now slated for inclusion into [[GEOS-Chem v11-03]]:
+
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
!width="400px"|Feature
+
!width="300px"|Mergeable at any time
!width="250px"|Submitted by
+
!width="200px"|Version in development
!width="100px"|Type
+
!width="300px"|Status
+
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
  
 
|-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]]
+
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
|Transport WG<br>[[GCST]]
+
|align="center"|'''[[GEOS-Chem 14.4.0]]'''
|Benchmarking
+
|
+
*Ready to be added
+
  
|-
+
|}
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
+
  
|-valign="top"
+
== Feature integration in progress ==
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
+
|Sebastian Eastham (MIT)
+
|Science
+
|
+
*Ready to be added
+
  
|-valign="top"
+
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.  
|[[Chemistry_Issues#Script_for_evaluating_carbon_balance|Script for checking N, C, etc. balance in chemistry mechanism]]
+
|Barron Henderson (EPA)
+
|Software
+
|
+
  
|-
+
{| border=1 cellspacing=0 cellpadding=5
!colspan="4" bgcolor="#CCFFFF"|Emissions updates
+
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Ease of implementation
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|[[Volcanic_SO2_emissions_from_Aerocom#OMI-based_volcanic_emissions|OMI-based volcanic emissions 2005-2012]]
+
|GCHP carbon simulation
|Cui Ge (U. Iowa)<br>Jun Wang (U. Iowa)
+
|Melissa Sulprizio (Harvard)<br>Bob Yantosca (Harvard)
|Science
+
|Carbon
 +
|Medium
 
|
 
|
*Need to implement a fix to handle missing data for 2012/09 thru 2012/12. We can do one of 2 things:
+
*[https://github.com/geoschem/geos-chem/pull/1992 geos-chem PR #1992]
**Create files with zero emissions for 2012/09 thru 2012/12.
+
*[https://github.com/geoschem/GCHP/issues/339 GCHP Issue #339]
***But because data for 2013- is copied from 2012, this will mean that the last 3 months of the year have no volcano emissions.
+
**Link to the existing volcano emsisions files for September thru December
+
  
 
|-valign="top"
 
|-valign="top"
|[[Mineral_dust_aerosols#Anthropogenic_PM2.5_dust_source_in_GEOS-Chem|Anthropogenic PM2.5 dust source]]
+
|KORUS-AQ emissions for East Asia (as an option)
|Sajeev Philip (Dalhousie)
+
|Katie Travis (NASA)
|Science
+
|Emissions
 +
|Simple
 
|
 
|
*Need to fix an "under-the-hood" issue in HEMCO that causes 1200 Tg of dust to be emitted by this update.
 
  
 
|-valign="top"
 
|-valign="top"
|[[FINNv1_biomass_burning_emissions|FINN biomass burning emissions for 2014-2016]]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
|Barron Henderson (US EPA)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
|Science
+
|Emissions
 +
|Simple
 
|
 
|
*Pending receipt of corrected data files
 
  
 
|-valign="top"
 
|-valign="top"
|EPA NEI2011 Version EK
+
|New version of CEDS at 0.1 deg
|Zitely Tzompa-Sosa (CSU)<br>Emily Fischer (CSU)
+
|Dandan Zhang (WashU)
|Science
+
|Emissions
 +
|Simple
 
|
 
|
*Need extra time for validation
+
*[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"
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Fabien Paulot (NOAA/GFDL)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Science
+
|Emissions
 +
|Medium
 
|
 
|
*Data files delivered to GCST (Jan 2016)
+
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
*Needs to be implemented via HEMCO
+
*Incorporates new met field TSOIL1
  
 
|-valign="top"
 
|-valign="top"
|GFAS biomass burning emissions
+
|Remove differences in GC-Classic when breaking up runs in time
|Mat Evans (York)
+
|Lizzie Lundgren (Harvard)
|Science
+
|GC-Classic
 +
|Medium
 
|
 
|
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Deposition/surface updates
 
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
 
  
 
|-valign="top"
 
|-valign="top"
|Sea salt aerosol alkalinity
+
|GCHP advection diagnostics
|Qianjie Chen (UW)<br>Becky Alexander (UW)<br>Xuan Wang (Harvard)
+
|Lizzie Lundgren (Harvard)
|Science
+
|GCHP diagnostics
 +
|Simple
 
|
 
|
*UW version delivered to GCST (Nov 2017)
+
*[https://github.com/geoschem/GCHP/pull/395 gchp PR #395]
  
 
|-valign="top"
 
|-valign="top"
|VBS SOA option
+
|Only convert units for species that need it
|Rokjin Park (SNU)
+
|Bob Yantosca (Harvard)
|Science
+
|Unit conversions
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]
 +
*'''This update breaks TOMAS, further development is needed'''
  
|-
+
|}
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
+
  
|-valign="top"
+
== Prioritized and in the queue ==
|Oxidant fields from v10 for 2006-2012
+
*3D chemical source for CO2, CO
+
*OH for tagged CO & CH4
+
|Dylan Jones (UofT)
+
|Science
+
|
+
*Will make data files available on ftp site
+
  
|-valign="top"
+
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
|Africa nested-grid for GEOS-FP and MERRA-2
+
|Eloise Marais (U. Birmingham)
+
|Science
+
|
+
*Delivered to GCST (Dec 2017)
+
  
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
|West Africa nested-grid for GEOS-FP
+
|-bgcolor="#CCCCCC"
|Mat Evans (York)<br>Eleanor Morris (York)
+
!width="200px"|Feature
|Science
+
!width="200px"|Contributor(s)
|
+
!width="100px"|Model scope
 +
!width="100px"|Ease of implementation
 +
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate simulation]]
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
|Becky Alexander (UW)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
|Science
+
|Chemistry
 +
|TBD
 +
|Delivered<br>June 2023
 
|
 
|
 +
*[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"
|Arsenic simulation
+
|ALK4 & R4N2 chemistry
|Shiliang Wu (MT)
+
|Jared Brewer (UMN)
|Science
+
|Chemistry
 +
|TBD
 +
|Not delivered
 
|
 
|
 
+
*[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.]
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
  
 
|-valign="top"
 
|-valign="top"
|Updated flux diagnostics
+
|[https://github.com/geoschem/geos-chem/pull/1983 Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition]
|Chris Holmes (Florida State)<br>[[GCST]]
+
|Yanshun Li (WashU)
|Structural/<br>Benchmarking
+
|Aerosols
 +
|Simple
 +
|Delivered<br>Oct 2023
 
|
 
|
*Work has not yet begun
+
*[https://acp.copernicus.org/articles/23/12525/2023/acp-23-12525-2023.html Li et al., ACP, 2023.]
 +
*[https://github.com/geoschem/geos-chem/pull/1983 geos-chem PR #1983]
 +
* '''Waiting on code updates from developer'''
  
 
|-valign="top"
 
|-valign="top"
|Benchmark of stratospheric simulation
+
|Mass flux regridding fix in MAPL
|Dylan Jones (U. Toronto)
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
|Benchmarking
+
|GCHP input regridding
 +
|Medium
 
|
 
|
*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 v11-03
+
*[https://github.com/GEOS-ESM/MAPL/pull/2056 GEOS-ESM/MAPL PR #2056]
*Also note: GCST plans on migrating benchmark plotting code from IDL to Python in v11-03
+
  
 
|-valign="top"
 
|-valign="top"
|[[GEOS-Chem_species_units|Uniformity of units]]
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
|[[GCST]]
+
|Haihui Zhu (WashU)
|Structural
+
|Aerosols
 +
|Medium
 +
|Delivered<br>Aug 2023
 
|
 
|
*Phase 2 (unit uniformity throughout chemistry) to be implemented after Flexchem
+
*[https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1292/ Zhu et al., EGUsphere, submitted 2023.]
*Phase 3 (unit uniformity in some specialty simulations) will be implemented in pieces with input from 3rd party developers
+
*[https://github.com/geoschem/geos-chem/pull/1902 geos-chem PR #1902]
*Phase 4 (removal of area and area-dependent State_Met variables) will be ongoing
+
*'''Currently on hold, as this update requires further modifications in the Cloud-J repository'''
  
 
|-valign="top"
 
|-valign="top"
|ObsPack diagnostic as netCDF replacement for planeflight_mod.F
+
|Capture all trop and PBL height changes in budget diagnostics
|Andy Jacobson (NOAA/ESRL)
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Structural
+
|Diagnostics
 +
|Medium
 
|
 
|
*Delivered to GCST (May 2017)
 
 
|-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]]
 
|[[GCST]]<br>Christoph Keller
 
|Bug fix<br>Structural
 
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
  
|-valign="top"
 
|Further structural updates to facilitate interfacing GEOS-Chem with external models (e.g. CAM, CESM)
 
|[[GCST]]
 
|Structural
 
|
 
*Ongoing
 
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
 
 
|-valign="top"
 
|[[FlexGrid|FlexGrid: Use HEMCO to read met fields and enable nested simulations over any custom domains]]
 
|Jiawei Zhuang (Harvard)<br>Jintai Lin (PKU)
 
|Structural
 
|
 
*Delivered to GCST (Oct 2016)
 
*Waiting for a stable v11-02 release before proceeding
 
 
|-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]]
 
|Seb Eastham (Harvard)
 
|Science
 
|
 
*Delivered to GCST (May 2017)
 
 
|-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]]) 19:53, 23 May 2018 (UTC)
+
== Ready to go in ==
  
=== Not prioritized for v11-03 ===
+
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="400px"|Item
+
!width="200px"|Feature
!width="250px"|Author(s)
+
!width="200px"|Contributor(s)
!width="100px"|Type
+
!width="100px"|Model scope
!width="300px"|Status
+
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|Sea salt emission from sea ice
+
|Geologic emission of ethane and propane
|Jiayue Huang (UW)
+
|Matthew Rowlinson and Mat Evans(York)
|Science
+
|Emissions
 +
|Delivered<br>Jan 2023
 
|
 
|
 +
*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"
|Re-evaluation of SST dependence of sea salt emissions
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Jiayue Huang (UW)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 
|Science
 
|Science
 +
|Delivered<br>Feb 2021
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Discussion_of_LAI_Data_Sources|Update MODIS LAI fields through 2015]]
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Barron Henderson (UF)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
|Science
+
|Emissions
 +
|Delivered<br>Jul 2021
 
|
 
|
 +
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
|Lightning NOx chemistry parameterization
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
|Alicia Gressent (MIT)
+
|Shixian Zhai (Harvard)
|Science
+
|Emissions
 +
|Delivered
 
|
 
|
 
+
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
|}
+
 
+
=== Almost there (< 6 months) ===
+
 
+
{| border=1 cellspacing=0 cellpadding=5
+
|- bgcolor="#cccccc"
+
!width="400px"|Item
+
!width="250px"|Author(s)
+
!width="100px"|Type
+
!width="300px"|Status
+
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
  
 
|-valign="top"
 
|-valign="top"
|[https://www.geosci-model-dev-discuss.net/gmd-2017-125/ GEOS resolution & subgrid convection]
+
|DMS Chemistry
|Karen Yu (Harvard)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
*To be installed by Bob Yantosca (Harvard), tested by Tailong He (Toronto)
 
*Work to begin after v11-02 release
 
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
 
  
 
|-valign="top"
 
|-valign="top"
|N2O5 hydrolysis updates
+
|Organic acids (RCOOH)
|Viral Shah (UW)
+
|Katie Travis (NASA)
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
*Defer until paper is submitted (Summer 2018)
 
*Code from v10 (SMVGEAR) needs to be translated to v11 (FlexChem)
 
  
 
|-valign="top"
 
|-valign="top"
|H2 chemistry in UCX
+
|Improve carbon & nitrogen conservation in reactions
|Chris Holmes (FSU)
+
|Kelvin Bates (Harvard)
|Science
+
|Chemistry
 +
|Not delivered
 
|
 
|
*Defer until paper is submitted
 
*Estimate Fall 2018 or sooner
 
  
 
|-valign="top"
 
|-valign="top"
|Updated chlorine chemistry
+
|Blowing snow sea salt in TOMAS
|Xuan Wang (Harvard)
+
|Betty Croft (Dalhousie)
|Science
+
|Aerosols
 +
|Not delivered
 
|
 
|
*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]]
+
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
|Katie Travis (MIT)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
|Structural
+
|Hg simulation
 +
|Not delivered
 
|
 
|
*Defer until the paper is submitted
 
  
 
|-valign="top"
 
|-valign="top"
|OH + NO2 rate update
+
|WRF-GC Hg simulation
|Barron Henderson (EPA)
+
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
|Science
+
|Hg simulation<br>WRF-GC
 +
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Aromatics and dicarbonyl chemistry
+
|Updated HgII gas-partical partitioning
|William Porter (MIT)<br>Tzung-May Fu (PKU)
+
|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"
|Document chemical mechanism in KPP file
+
|Dry deposition to F90 (readability)
|Mat Evans (York)
+
|Chris Holmes (FSU)
|Structural
+
|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.
 +
 +
{|border=1 cellspacing=0 cellpadding=5
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|Diurnal variability for NH3
+
|Replace ISORROPIA with [https://gmd.copernicus.org/preprints/gmd-2023-159/gmd-2023-159.pdf HTEPv1.0]
|Henze group
+
|Seb Eastham (MIT)<br>Lizzie Lundgren (Harvard)
|Science
+
|Aerosol thermodynamics
 
|
 
|
 +
*Will be git submodule
  
 
|-valign="top"
 
|-valign="top"
|Uptake of HNO3 onto coarse-mode sea salt
+
|PPN+hv, PPN+OH
|Prasad Kasibhatla (Duke)
+
|Robert Ryan (UCL)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Photolysis of NITs
+
|MBO
|Prasad Kasibhatla (Duke)
+
|Michael Vermeuel (UMN)
|Science
+
|Chemistry
 
|
 
|
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Emissions updates
 
  
 
|-valign="top"
 
|-valign="top"
|Grid-independent lightning NOx emissions (3-hourly)
+
|Initial conditions for CH4 correcting background and stratospheric biases
|Lee Murray (Rochester)
+
|Todd Mooring (Harvard)
|Science
+
|Methane simulation
 
|
 
|
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
|Grid-independent dust emissions (hourly)
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|David Ridley (MIT)
+
|Bob Yantosca (Harvard)
|Science
+
|Aerosols<br>Structural
 
|
 
|
*Data has not yet been transferred to GCST
+
*Ongoing
  
 
|-valign="top"
 
|-valign="top"
|Grid-independent biogenic emissions (hourly)
+
|Re-binning of off-line sea salt and dust for use in TOMAS
|Jintai Lin (PKU)
+
|Betty Croft (Dalhousie)
|Science
+
|Aerosols
 
|
 
|
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
|Grid-independent sea salt emissions (hourly)
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
|Randall Martin (Dalhousie)
+
|Betty Croft (Dalhousie)
|Science
+
|Aerosols
 
|
 
|
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
|EPA-derived BC/OA emissions over US (1990-2012)
+
|ML algorithms for bulk aerosols
|David Ridley (MIT)<br>Chi Li (Dalhousie)
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
|Science
+
|Aerosols
 
|
 
|
*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"
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
+
|Shixian Zhai (Harvard)
|Science
+
|Aerosols
 
|
 
|
*MASAGE data is already available.
 
*GCST would need assistance from the user community to prepare HEMCO configuration files such that we do not double-count agricultural NH3 from MASAGE and other inventories.  This has been the main delay.
 
*F. Paulot has left the GEOS-Chem community.
 
  
 
|-valign="top"
 
|-valign="top"
|[[MASAGE_NH3_inventory#Non-agricultural_NH3_for_use_with_MASAGE|Non-agricultural NH3 for use with MASAGE]]
+
|Updates to Hodzic SOA scheme
|Amos Tai (CUHK)
+
|Jared Brewer (Harvard)
|Science
+
|Aerosols
 
|
 
|
*Waiting on data
 
  
 
|-valign="top"
 
|-valign="top"
|Injection height for fire emissions
+
|Automated reduction in isoprene scheme
|Juliet Zhu (CSU)<br>Emily Fischer (CSU)
+
|Dan Westervelt (Lamont-Doherty)
|Science
+
|Aerosols
 
|
 
|
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Surface fluxes and land usage updates
 
  
 
|-valign="top"
 
|-valign="top"
|Carbon bottom up fluxes: anthro, ocean, land
+
|Brown carbon chemsitry
|Kevin Bowman (JPL)
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Land cover module: Harmonized biosphere-atmosphere exchange and implementing CLM or manual land cover change experiments
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
|Jeff Geddes (BU)
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
|Science
+
|Convection
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Online O3-LAI coupling in GEOS-Chem
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
|Amos Tai (CUHK)
+
|Jintai Lin (PKU)
|Science
+
|Emissions
 
|
 
|
 
+
*Horizontal resolution: 5km, temporal resolution: JJA mean
|-
+
*monthly data will be available at a later stage; please contact us
!colspan="4" bgcolor="#CCFFFF"|Deposition updates
+
  
 
|-valign="top"
 
|-valign="top"
|Wet deposition parameterizations: pH dependency, Henry's law coefficients, etc.
+
|Updated biomass burning emission factors and species
|Sarah Safieddine (MIT)<br>GCST
+
|Tess Carter (MIT)
|Science
+
|Emissions
 
|
 
|
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
 
  
 
|-valign="top"
 
|-valign="top"
|AMAP/UNEP 2035 for Hg simulation
+
|Updated offline sea salt emissions
|Helene Angot (MIT)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
|Science
+
|Emissions
 
|
 
|
*Data is available, but has not been transferred to GCST yet
 
  
 
|-valign="top"
 
|-valign="top"
|[[POPs simulation#PCB simulation|PCB simulation]]
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
+
|Sam Silva (MIT)
|Science
+
|Emissions &<br>Science
 
|
 
|
 +
*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"
|New EDGAR sectoral inventory for Hg (1970-2012)
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Amanda Giang (MIT)
+
|Bob Yantosca (Harvard)
|Science
+
|Model performance
 
|
 
|
 +
*Ongoing (will be done as time allows)
  
 
|-valign="top"
 
|-valign="top"
|Archive GISS met fields from RCP scenarios for community
+
|Retire all BPCH diagnostics
|Lee Murray (Rochester)
+
|Bob Yantosca (Harvard)
|Science
+
|Diagnostics
 
|
 
|
 
+
*Can be done following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]
|-
+
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
  
 
|-valign="top"
 
|-valign="top"
|Clean up SOA diagnostics
+
|Assess memory leak in GCHP
|GCST
+
|Killian Murphy (York)
|Structural
+
|Model performance
 
|
 
|
*GCST has implemented many existing SOA diagnostics in netCDF
+
*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.
*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)
+
|Hybrid MPI-OpenMP in GCHP
|GCST
+
|Seb Eastham (MIT)<br>Killian Murphy (York)
|Structural
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Harmonizing Henry's Law coefficients across wet and dry deposition
+
|Improve run directory templating and creation with init_rd.sh and shared directories
|[[GCST]]
+
|Jourdan He (WashU)
|Science
+
|Run directories
 
|
 
|
*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
+
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
|Rokjin Park (SNU)<br>Daniel Rothenberg (MIT)
+
|GCST?
|Science
+
|Documentation
 
|
 
|
*NOTE: D. Rothenberg is no longer working on GEOS-Chem
 
  
 
|}
 
|}
  
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 19:16, 23 May 2018 (UTC)
+
== Over the horizon (6-12 months) ==
  
=== Over the horizon (6-12 months) ===
+
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
!width="400px"|Item
+
!width="200px"|Feature
!width="250px"|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"
|[http://www.atmos-chem-phys.net/16/2819/2016/ A snow NOx source from deep snowpack]
+
|Snow / Icy Bromine
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
|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)
+
|Monoterpene oxidation scheme
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
+
|Jessica Haskins (MIT)
|Science
+
|Chemistry
 
|
 
|
*Implementation delayed until MEIC paper is published
 
  
 
|-valign="top"
 
|-valign="top"
|GISS-GC (ICECAP/GCAP2) in standard model + benchmark
+
|Fire related VOCs including furans
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
|Science
+
|Chemistry
|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"
 
|-valign="top"
|CESM-GC GCHP
+
|Extension of UCX into the mesosphere
|Seb Eastham
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
|Science
+
|Chemistry
 
|
 
|
*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:
+
|Methane flux ingestion
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Eloise Marais (UCL)
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Chemistry
|[[GCST]]
+
|Structural
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Dynamic fire modeling/prediction
+
|Dust non-sphericity impacts on surface chem and optical properties
|Shiliang Wu (MNT)
+
|Inderjeet Singh (WashU)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Interannually varying ocean model BCs for Hg from ocean model
+
|Size-resolved stratospheric aerosol
|Colin Thackray (Harvard)
+
|Seb Eastham (MIT)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|PAH & PFCA simulations
+
|Extend aerosol settling
|Peter Ivatt (York)<br>Mat Evans (York)<br>Noelle Selin (MIT)<br>Colin Thackray (Harvard)
+
|Eloise Marais (UCL)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|CH4 in full chemistry simulation
+
|Stratospheric aerosol APM
|Seb Eastham (Harvard)
+
|Fangqun Yu (SUNY)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Standard future land use maps (PFT, LAI) for RCP/CMIP6 simulations
+
|Plume-in-grid model
|Colette Heald (MIT)<br>Loretta Mickley (Harvard)
+
|Hongwei Sun (Harvard)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Archive GISS met fields from CMIP6 scenarios for community
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
 
|Lee Murray (Rochester)
 
|Lee Murray (Rochester)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updates to cold-temperature deposition
+
|Seb aircraft emissions beyond recent 2019 update
|Lyatt Jaegle (UW)
+
|Seb Eastham (MIT)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Simple parameterization for CO2-O3 dependence of stomatal resistance
+
|FRP-based fire emsisions for eastern US at 0.2 deg
|Amos Tai (CUHK)
+
|Charlie Fite (FSU)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|NH3 emissions over China
+
|Hg iodine chemistry
|Lin Zhang (PKU)
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Using GEOS-Chem within GEOS-5
+
|Hg simulation in GCHP
|Loretta Mickley (Harvard)
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
|Beata Bukosa (Wollongong)<br>Dylan Jones (UofT)
+
|Yanxu Zhang (Nanjing U.)
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Seasonal EMEP emissions back to 1980
+
|Dry deposition diagnostics by land cover
|Mat Evans (York)
+
|Holly Nowell (FSU)
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updates to NO2 dry deposition
+
|Dry deposition process diagnostics
|Brian Boys (Dalhousie)
+
|Holly Nowell (FSU)
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|APM update and integration with most recent GEOS-Chem version
+
|Isotope simulation for CO and CH4 in GCHP
|Gan Luo (SUNY Albany)
+
|Structural
+
|
+
 
+
|-valign="top"
+
|Cosmogenic tracer production
+
 
|Lee Murray (Rochester)
 
|Lee Murray (Rochester)
|Science
+
|Carbon simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Explore resolution-consistent dust emissions
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
*Make high-res concentrations or mass fluxes available offline, implement in met field processing
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
|David Ridley (MIT)<br>GCST<br>Nested Model WG
+
|Emissions<br>CH4 simulation
|Science
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Dust emissions at nested-grid resolutions
+
|Modularization of aerosols code for interface with GOCART in GEOS
|Yuxuan Wang (U. Houston)<br>Jun Wang (U. Iowa)
+
|Christoph Keller (GMAO)
|Science
+
|Structural
 
|
 
|
*Check for overlap with resolution-consistent dust emissions above
 
  
 
|-valign="top"
 
|-valign="top"
|[[Wet_deposition#Update_SO2_scavenging_in_convective_updrafts_for_consistency|Update SO2 scavenging in convective updrafts for consistency]]
+
|Improve load balancing in GCHP
|Duncan Fairlie (NASA/LARC)  
+
|Seb Eastham (MIT)
|Science
+
|Model performance
 
|
 
|
 
|}
 
 
=== Longer term (12-24 months)===
 
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
!width="400px"|Item
 
!width="250px"|Author(s)
 
!width="100px"|Type
 
!width="300px"|Status
 
  
 
|-valign="top"
 
|-valign="top"
|GCHP stretched grid
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
|Jiawei Zhuang (Harvard)
+
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
|Science
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|1/8 degree nested-grid simulations with GEOS-FP
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Nested Model WG
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
|Science
+
|Transport
 
|
 
|
*Wait for more interest
 
  
 
|-valign="top"
 
|-valign="top"
|Embedding GEOS-Chem into CESM
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
|Jean-Francois Lamarque (NCAR)
+
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
|Science
+
|Transport
 
|
 
|
  
|-valign="top"
+
|}
|Adjoint of carbon cycle simulation in GCHP
+
|Kevin Bowman (JPL)
+
|Science
+
|
+
  
|-valign="top"
+
== Longer term (12-24 months)==
|Isoprene chemistry v2 (new Caltech update)
+
|Kelvin Bates (Caltech)
+
|Science
+
|
+
  
|-valign="top"
+
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.
|Contemporary land cover: developing historical and updated GEOS-Chem land cover maps based on satellite remote sensing
+
|Jeff Geddes (BU)
+
|Science
+
|
+
  
|-valign="top"
+
{| border=1 cellspacing=0 cellpadding=5
|Farquhar-Ball-Barry model to calculate stomatal resistance
+
|- bgcolor="#cccccc"
|Amos Tai (CUHK)<br>Jeff Geddes (BU)
+
!width="200px"|Feature
|Science
+
!width="200px"|Contributor(s)
|
+
!width="100px"|Model scope
 +
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|Impacts of chemistry on ecosystem/carbon cycle
+
|Updates to Aromatic chemistry
|Kevin Bowman (JPL)<br>Anthony Bloom (JPL)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Improved lightning emission scheme
+
|Nitrate photolysis
|Lee Murray (Rochester)
+
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Resolution-independent lightning NOx
+
|In aerosol chemistry Halogens
|Lee Murray (Rochester)
+
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Bidirectional NH3 emissions
+
|Benchmark box model of GC Chemistry
|Juliet Zhu (CSU)
+
|Katie Travis (NASA)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Country-based weekday/weekend variability for EDGAR 4.2
+
|Alkyl nitrates Alk7, PHAN
|Lee Murray (Rochester)<br>Christoph Keller (Harvard)
+
|Katie Travis (NASA)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Update keytone photolysis
+
|Add stratospheric ozone species to full-chemistry simulations
|Jared Brewer (CSU)<br>Emily Fischer (CSU)
+
|Lee Murray (Rochester)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Small alkyl nitrates
+
|Perchlorate chemistry
|Jenny Fisher (Wollongong)
+
|Yuk Chun Chan (UWAB)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|YIBS-GC chemistry-biosphere-fire coupling
+
|Explicit heterogeneous sulfate chemistry
|Loretta Mickley (Harvard)<br>Xu Yue (IAP)
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Nitrogen-LAI coupling
+
|HOx and ozone "emissions" from lightning as option in model to play with
|Lin Zhang (PKU)<br>Amos Tai (CUHK)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Implementing humidity/VPD dependence of dry deposition
+
|Sea salt aerosol from sea ice leads
|Jennifer Murphy (U. Toronto)
+
|Hannah Horowitz (U. Illinois)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|SO2 wet scavenging
+
|Drought-stress algorithm
|Duncan Fairlie (NASA Langley)
+
|Wei Li (U. Houston)
|Science
+
 
|
 
|
 
|-valign="top"
 
|Heterogeneous sulfate production
 
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
 
|Science
 
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|MOSAIC implementation
+
|Biomass burning injection height profiles
|Sebastian Eastham (Harvard)
+
|Inderjeet Singh (WashU)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Particle size climatology
+
|OCIM integration
|Fangqun Yu (SUNY Albany)
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
|Science
+
 
|
 
|
 
|-valign="top"
 
|Sea salt/dust size distribution
 
|David Ridley (MIT)<br>Colette Heald (MIT)
 
|Science
 
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updates to GTMM
+
|Updating landcover products in GEOS-Chem
|Rebecca Stern (Harvard)
+
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
|Science
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Tracer transport ocean
+
|Dry deposition physical improvement
 
|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)
 

Revision as of 18:08, 21 March 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
GCHP carbon simulation Melissa Sulprizio (Harvard)
Bob Yantosca (Harvard)
Carbon Medium
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
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa)
Emissions Medium
Remove differences in GC-Classic when breaking up runs in time Lizzie Lundgren (Harvard) GC-Classic Medium
GCHP advection diagnostics Lizzie Lundgren (Harvard) GCHP diagnostics Simple
Only convert units for species that need it Bob Yantosca (Harvard) Unit conversions 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
Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition Yanshun Li (WashU) Aerosols Simple Delivered
Oct 2023
Mass flux regridding fix in MAPL Lizzie Lundgren (Harvard)
Seb Eastham (MIT)
GCHP input regridding Medium
Parameterization of SNA and OM dry size Haihui Zhu (WashU) Aerosols Medium Delivered
Aug 2023
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard)
Diagnostics Medium

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