GEOS-Chem model development priorities: Difference between revisions

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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 as of May 2017 ==
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.
{| border=1 cellspacing=0 cellpadding=5
|-bgcolor="#CCCCCC"
!width="300px"|Mergeable at any time
!width="200px"|Version in development


=== Awaiting release ===
|-valign="top"
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
|align="center"|'''[[GEOS-Chem 14.4.0]]'''


Items awaiting release will be part of the next version release of GEOS-Chem and are actively being incorporated into the standard model and benchmarked. More information on those items can be obtained on the [[GEOS-Chem v11-02]] wiki page.
|}


{| border=1 cellspacing=0 cellpadding=5
== Feature integration in progress ==
|- bgcolor="#cccccc"
!width="400px"|Item
!width="300px"|Author(s)
!width="400px"|Status


|- bgcolor="#ccffff"
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.
!colspan="3"|Science updates


|-valign="top"
{| border=1 cellspacing=0 cellpadding=5
|[[Updates_in_JPL_Publication_15-10|Updating chemistry rate constants based on ''JPL Publication 15-10'']]
|-bgcolor="#CCCCCC"
|Barron Henderson (U. Florida)<br>Mat Evans (U. York)<br>[[Chemistry Issues|Oxidants and Chemistry WG]]
!width="200px"|Feature
|
!width="200px"|Contributor(s)
*Included in [[GEOS-Chem v11-02#v11-02a|v11-02a]] (Approved 12 May 2017)
!width="100px"|Model scope
!width="100px"|Ease of implementation
!width="300px"|Notes and References


|-valign="top"
|-valign="top"
|[[PAN|PAN updates ]], including:
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
*Updates to emissions, deposition, species, chemistry
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
*Ocean+biogenic ALD2 emissions from Millet al. [2010]
|Emissions
|Emily Fischer (CSU)
|Simple
|
|
*Included in [[GEOS-Chem v11-02#v11-02a|v11-02a]] (Approved 12 May 2017)


|-valign="top"
|-valign="top"
|[[EPA/NEI11_North_American_emissions#Monthly_mean_emissions|Monthly mean NEI2011 emissions]]
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
|[[GCST]]<br>Katie Travis (Harvard)
|Haihui Zhu (WashU)
|Aerosols
|Medium
|
|
*Included in [[GEOS-Chem v11-02#v11-02a|v11-02a]] (Approved 12 May 2017)
*[https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1292/ Zhu et al., EGUsphere, submitted 2023.]
*[https://github.com/geoschem/geos-chem/pull/1902 geos-chem PR #1902]


|-valign="top"
|-valign="top"
|Enhance default GEOS-Chem simple SOA
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Sal Farina (Colorado State)<br>Aerosol Working Group Chairs
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Emissions
|Medium
|
|
*Included in [[GEOS-Chem v11-02#v11-02c|v11-02c]] (Approved 21 Sep 2017)
*[https://github.com/geoschem/geos-chem/issues/1288 geos-chem issue #1288]
*Incorporates new met field TSOIL1


|-valign="top"
|-valign="top"
|Updates to isoprene chemistry, includes:
|Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4
*Fast photolysis of carbonyl nitrates
|Lizzie Lundgren (Harvard)
*Aerosol uptake of organic nitrates
|GC-Classic
*Updated organic deposition
|Medium
*Remove dependence of species drydep on HNO3 drydep
|Jenny Fisher (U. Wollongong)<br>Elo&iuml;se Marais (Harvard)<br>Katie Travis (Harvard)<br>Kelvin Bates (Caltech)<br>Rebecca Schwantes(Caltech)
|
|
*Included in [[GEOS-Chem v11-02#v11-02c|v11-02c]] (Approved 21 Sep 2017)
*[https://github.com/geoschem/HEMCO/issues/18 hemco issue #18]


|-valign="top"
|-valign="top"
|[http://acmg.seas.harvard.edu/publications/2016/Marais_SEUS_isopSOA_ACP_2016.pdf Add aqueous isoprene uptake to SOA scheme]
|Replace ISORROPIA with [https://gmd.copernicus.org/articles/17/2197/2024/ HETPv1.0]
|Eloise Marais (Harvard)
|Lizzie Lundgren (Harvard)<br>Seb Eastham (ICL)
|Aerosol thermodynamics
|Medium
|
|
*Included in [[GEOS-Chem v11-02#v11-02c|v11-02c]] (Approved 21 Sep 2017)
*[https://github.com/geoschem/geos-chem/issues/2235 geos-chem issue #2235]


|-valign="top"
|-valign="top"
|[[Chemistry_Issues#Fixes_for_carbon_creating_reactions|Carbon balance (fix C creation)]]
|Only convert units for species that need it
|Sarah Safieddine (MIT)
|Bob Yantosca (Harvard)
|Unit conversions
|Medium
|
|
*Included in [[GEOS-Chem v11-02#v11-02c|v11-02c]] (Approved 21 Sep 2017)
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]


|-valign="top"
|-valign="top"
|[http://www.atmos-chem-phys.net/16/12239/2016/ Halogen chemistry updates]
|Capture all trop and PBL height changes in budget diagnostics
|Tom&aacute;s Sherwen (York)<br>Johan Schmidt (Harvard)<br>Seb Eastham (MIT)<br>Lei Zhu (Harvard)<br>[[Chemistry Issues|Oxidants and Chemistry WG]]
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
|Science
|Diagnostics
|Medium
|
|
*Included in [[GEOS-Chem v11-02#v11-02d|v11-02d]] (Approved 12 Feb 2018)
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 
|-valign="top"
|[http://onlinelibrary.wiley.com/doi/10.1002/2017GL073812/abstract Sulfur oxidation by reactive halogens]
|Qianjie Chen (UW)
|Science
|
*Included in [[GEOS-Chem v11-02#v11-02d|v11-02d]] (Approved 12 Feb 2018)
 
|-bgcolor="#ccffff" valign="top"
!colspan="3"|Structural/programming updates
 
|-valign="top"
|[[GEOS-Chem HP|Source code updates for high performance option (GCHP)]]
|Seb Eastham (Harvard)<br>Lizzie Lundgren (Harvard)<br>Mike Long (Harvard)<br>Jiawei Zhuang (Harvard)<br>Bob Yantosca (Harvard)
|
*Included in [[GEOS-Chem v11-02#v11-02b|v11-02b]] (Approved 16 Jun 2017)


|}
|}


=== Ready to go in ===
== Prioritized and in the queue ==


==== Slated for inclusion in v11-02 ====
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.


The following items were prioritized for inclusion in [[GEOS-Chem v11-02]].
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
{| border=1 cellspacing=0 cellpadding=5
!width="200px"|Feature
|- bgcolor="#cccccc"
!width="200px"|Contributor(s)
!width="400px"|Item
!width="100px"|Model scope
!width="250px"|Author(s)
!width="100px"|Ease of implementation
!width="80px"|Type
!width="100px"|Delivery status
!width="250px"|Status
!width="300px"|Notes and References
 
|-
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates


|-valign="top"
|-valign="top"
|[[Chemistry_Issues#Script_for_evaluating_carbon_balance|Script for checking N, C, etc. balance in chemistry mechanism]]
|ALK4 & R4N2 chemistry
|Barron Henderson (EPA)
|Jared Brewer (UMN)
|Software
|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., 2023.]


|-valign="top"
|-valign="top"
|[[Aerosol_optical_properties#Add_BC_absorption_enhancement_factor|Update density of BC to 1.8 and add absorption enhancement factor in input.geos]]
|Mass flux regridding fix in MAPL
|Xuan Wang (MIT)
|Tom Clune (GMAO)<br>Seb Eastham (MIT)
|Science
|GCHP input regridding
|Medium
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2016)
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
|-valign="top"
|[[NOx-Ox-HC-aerosol#Monthly mean surface distributions|Monthly mean surface methane distributions]]
|Lee Murray (NASA GISS/LDEO)
|Science
|
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2017)
*[https://github.com/geoschem/GCHP/issues/377 GCHP Issue #377]
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
*'''Currently on hold, as the submitted update results in zero diff'''


|-valign="top"
|-valign="top"
|[[UCX_chemistry_mechanism#v11-02|Remove initial stratospheric 2D mixing ratio option]]
|New version of CEDS at 0.1 deg
|Seb Eastham (Harvard)
|Dandan Zhang (WashU)
|Science
|Emissions
|Simple
|Delivered
|
|
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
*[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"
|}
|[[UCX_chemistry_mechanism#UCX_stratospheric_water_boundary_condition_update|UCX stratospheric water boundary condition update]]
|Chris Holmes (UC Irvine)<br>Seb Eastham (Harvard)
|Science
|
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
*Delivered to GCST (Jan 2017)


|-valign="top"
== Ready to go in ==
|[[Stratospheric_chemistry#Prod.2Floss_rates_from_UCX|Use monthly mean stratospheric prod/loss rates from UCX simulation for all species]]
|[[GCST]]
|Science
|
*Delivered to GCST (Nov 2017)


|-valign="top"
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.
|[[Sulfate_aerosols#Metal_catalyzed_oxidation_of_SO2|Metal catalyzed oxidation of SO2]] (as a switch)
|Viral Shah (UW)<br>Becky Alexander (UW)
|Science
|
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]


|-valign="top"
{| border=1 cellspacing=0 cellpadding=5
|[[Particulate_matter_in_GEOS-Chem#Option_to_include_spatially_and_seasonally_varying_OM.2FOC|Spatially varying OM/OC]]
|-bgcolor="#CCCCCC"
|Sajeev Philip (Dalhousie/NASA Ames)
!width="200px"|Feature
|Science
!width="200px"|Contributor(s)
|
!width="100px"|Model scope
*Slated for [[GEOS-Chem v11-02#v11-02e|v11-02e]]
!width="100px"|Delivery status
*Delivered to GCST (May 2017)
!width="300px"|Notes and References


|-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]]
|KORUS-AQ emissions for East Asia (as an option)
|Structural
|Katie Travis (NASA)
|Katie Travis (MIT)
|Emissions
|
|Simple
*Delivered to GCST (Nov 2017)
 
|-
!colspan="4" bgcolor="#CCFFFF"|Emission updates
 
|-valign="top"
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Global_0.25x0.25_MEGAN_input_and_MODIS_LAI|Use global 0.25x0.25 files for MEGAN input and MODIS LAI]]
|Jenny Fisher (U. Wollongong)<br>Eloise Marais (U. Birmingham)<br>Dylan Millet (UMN)
|Bug fix/Science
|
*Delivered to GCST (Nov 2017)
 
|-valign="top"
|[[Implementation_of_HEMCO_in_GEOS-Chem#Features_added_in_v11-02|Update HEMCO from v2.1.001 to v2.1.005]]
*HEMCO v2.1.003 requires updated MODIS LAI data
|Christoph Keller (NASA GMAO)
|Structural
|
*Delivered to GCST (Jul 2017)
 
|-valign="top"
|[http://onlinelibrary.wiley.com/doi/10.1002/2015JD023134/abstract OMI-based Volcanic emissions 2005-2012]
|Cui Ge (U. Iowa)<br>Jun Wang (U. Iowa)
|Science
|
*Delivered to GCST (Nov 2017)
 
|-valign="top"
|[http://www.globalchange.umd.edu/ceds/ CEDS global anthropogenic emissions (1950-2014)]
*This inventory will be the default global anthropogenic emissions inventory
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
|Science
|
*Delivered to GCST (Nov 2017)
 
|-valign="top"
|[[EDGAR_v4.3_anthropogenic_emissions|EDGAR v4.3.1 emissions]]
*This inventory will be included as an option
|Chi Li (Dalhousie)
|Science
|
*Delivered to GCST (Nov 2016)
 
|-valign="top"
|EPA-derived BC/OA emissions over US (1990-2012)
|David Ridley (MIT)<br>Chi Li (Dalhousie)
|Science
|
|
*Need to coordinate between Ridley and Li versions


|-valign="top"
|-valign="top"
|[[CAC_anthropogenic_emissions#Historical_emissions|Historical CAC emissions]]
|Geologic emission of ethane and propane
|Chi Li (Dalhousie)
|Matthew Rowlinson and Mat Evans(York)
|Science
|Emissions
|Delivered<br>Jan 2023
|
|
*Delivered to GCST (Nov 2016)
*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"
|[http://onlinelibrary.wiley.com/doi/10.1002/2016JD025767/full Global ethane emissions]
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Zitely Tzompa-Sosa (CSU)
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
|Science
|Science
|Delivered<br>Feb 2021
|
|
*Delivered to GCST (May 2017)
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]


|-valign="top"
|-valign="top"
|[https://www2.acom.ucar.edu/modeling/dice-africa Inefficient combustion emissions in Africa (DICE-Africa inventory)]
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Eloise Marais (U. Birmingham)<br>Christine Wiedinmyer (NCAR)
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
|Science
|Emissions
|Delivered<br>Jul 2021
|
|
*Delivered to GCST (Nov 2017)
*Data involves many files- need to think about temporal frequency


|-valign="top"
|-valign="top"
|Trash burning emissions
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
|Eloise Marais (U. Birmingham)<br>Christine Wiedinmyer (NCAR)
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
|Science
|Chemistry
|Delivered<br>June 2023
|
|
*Delivered to GCST (Nov 2017)
*[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"
|MEIC emissions over China (2000-2015)
|DMS Chemistry
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
|Science
|Chemistry
|Not delivered
|
|
*Delivered to GCST (Nov 2017)


|-valign="top"
|-valign="top"
|[[Mineral_dust_aerosols#Anthropogenic_PM2.5_dust_source_in_GEOS-Chem|Anthropogenic PM2.5 dust source]]
|Organic acids (RCOOH)
|Sajeev Philip (Dalhousie)
|Katie Travis (NASA)
|Science
|Chemistry
|Not delivered
|
|
*Delivered to GCST (Mar 2017)


|-valign="top"
|-valign="top"
|[[FINNv1_biomass_burning_emissions|FINN biomass burning emissions for 2014-2016]]
|Improve carbon & nitrogen conservation in reactions
|Barron Henderson (US EPA)
|Kelvin Bates (Harvard)
|Science
|Chemistry
|Not delivered
|
|
*Delivered to GCST (Nov 2017)


|-valign="top"
|-valign="top"
|Ammonia emissions from Arctic seabirds
|Blowing snow sea salt in TOMAS
|Betty Croft (Dalhousie)
|Betty Croft (Dalhousie)
|Science
|Aerosols
|
|Not delivered
*Delivered to GCST (Nov 2017)
 
|-valign="top"
|EPA NEI2011 Version EK
|Zitely Tzompa-Sosa (CSU)<br>Emily Fischer (CSU)
|Science
|
|
*Delivered to GCST (Jan 2018)
|-
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates


|-valign="top"
|-valign="top"
|[[CH4_simulation#Updated_CH4_simulation_in_v11-02_and_later|Updated CH4 simulation]]
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
|Bram Maasakkers (Harvard)<br>Melissa Sulprizio (Harvard)
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
|Science
|Hg simulation
|Not delivered
|
|
*Delivered to GCST (Oct 2017)


|-valign="top"
|-valign="top"
|[[Tagged_CO_simulation#New_tagged_CO_simulation_in_v11-02_and_later|Updated Tagged CO simulation]]
|WRF-GC Hg simulation
|Jenny Fisher (Wollongong)
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
|Science
|Hg simulation<br>WRF-GC
|Not delivered
|
|
*Delivered to GCST (Nov 2017)


|-valign="top"
|-valign="top"
|Updates to Hg chemistry from Horowitz et al. (2017)
|Updated HgII gas-partical partitioning
|Hannah Horowitz (U. Washington)<br>Colin Thackray (Harvard)<br>Rebecca Stern (Harvard)
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
|Science
|Hg simulation
|Not delivered
|
|
 
*Should be option, not default
|-
!colspan="4" bgcolor="#CCFFFF"|Structural updates


|-valign="top"
|-valign="top"
|[[GEOS-Chem_Output_Files#NetCDF_File_Format|NetCDF Output Phase 3a: Output diagnostics in NetCDF format]]
|Dry deposition to F90 (readability)
|[[GCST]]
|Chris Holmes (FSU)
|Structural
|Dry deposition
|Not delivered
|
|


|}
|}


==== Defer to v11-03 ====
== Almost there (< 6 months) ==


{| border=1 cellspacing=0 cellpadding=5
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
|-bgcolor="#CCCCCC"
!width="500px"|Feature
!width="200px"|Submitted by
!width="100px"|Type
!width="150px"|Status


|-
{|border=1 cellspacing=0 cellpadding=5
!colspan="4" bgcolor="#CCFFFF"|Transport updates
|- bgcolor="#cccccc"
!width="200px"|Feature
!width="200px"|Contributor(s)
!width="100px"|Model scope
!width="420px"|Notes and References


|-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
|
|
*Delivered to GCST (Oct 2017)


|-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]]
|MBO
|Transport WG<br>[[GCST]]
|Michael Vermeuel (UMN)
|Benchmarking
|Chemistry
|
|
|-
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates


|-valign="top"
|-valign="top"
|Updated chlorine chemistry
|Initial conditions for CH4 correcting background and stratospheric biases
|Xuan Wang (Harvard)
|Todd Mooring (Harvard)
|Science
|Methane simulation
|
|
|-
!colspan="4" bgcolor="#CCFFFF"|Emissions updates


|-valign="top"
|-valign="top"
|Grid-independent emissions, including:
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
*Lightning NOx emissions (3-hourly)
|Bob Yantosca (Harvard)
*Dust emissions (hourly)
|Aerosols<br>Structural
*Biogenic and sea salt emissions (hourly)
|Randall Martin (Dalhousie)<br>Lee Murray (Rochester)<br>David Ridley (MIT)<br>Jintai Lin (PKU)
|Science
|
|
*Ongoing


|-valign="top"
|-valign="top"
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
|Re-binning of off-line sea salt and dust for use in TOMAS
|Fabien Paulot (NOAA/GFDL)
|Betty Croft (Dalhousie)
|Science
|Aerosols
|
|
*Data files delivered to GCST (Jan 2016)
*Needs to be implemented via HEMCO


|-valign="top"
|-valign="top"
|[http://www.atmos-chem-phys.net/16/2819/2016/ A snow NOx source from deep snowpack]
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
|Maria Zatko (UW)<br>Becky Alexander (UW)
|Betty Croft (Dalhousie)
|Science
|Aerosols
|
*Delivered to GCST (Nov 2017)
*Implemented in v9-01-01
*Needs to be added as a HEMCO extension
 
|-valign="top"
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
|Science
|
 
|-valign="top"
|[[MASAGE_NH3_inventory#Non-agricultural_NH3_for_use_with_MASAGE|Non-agricultural NH3 for use with MASAGE]]
|Amos Tai (CUHK)
|Science
|
 
|-valign="top"
|Radon emission update
|Bo Zhang (NIA/NASA Langley)
|Science
|
*Delivered to GCST (Nov 2017)
*Implementation pending paper submission
 
|-valign="top"
|GFAS biomass burning emissions
|Mat Evans (York)
|Science
|
 
|-
!colspan="4" bgcolor="#CCFFFF"|Deposition/surface updates
 
|-valign="top"
|Wet scavenging in mixed-phase clouds
|Bo Zhang (NIA/NASA Langley)
|Science
|
*Delivered to GCST (Nov 2017)
*Only applied/tested for Pb
*Implementation pending paper submission
 
|-valign="top"
|Harmonizing Henry's Law coefficients across wet and dry deposition
|[[GCST]]
|Science
|
 
|-valign="top"
|[[Aerosols_Working_Group#Sedimentation_of_stratospheric_aerosols|Sedimentation of stratospheric aerosols]]
|Sebastian Eastham (Harvard)
|Science
|
 
|-
!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"
|VBS SOA option
|Rokjin Park (SNU)
|Science
|
|
|-
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates


|-valign="top"
|-valign="top"
|Oxidant fields from v10 for 2006-2012
|ML algorithms for bulk aerosols
*3D chemical source for CO2, CO
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
*OH for tagged CO & CH4
|Aerosols
|Dylan Jones (UofT)
|Science
|
|
*Will make data files available on ftp site


|-valign="top"
|-valign="top"
|Year 2010 ocean Hg boundary conditions from ocean model
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
|Hannah Horowitz (Harvard)
|Shixian Zhai (Harvard)
|Science
|Aerosols
|
 
|-valign="top"
|Historical products emissions from Zhang et al. (2016), should become default
|Colin Thackray (Harvard)
|Science
|
|


|-valign="top"
|-valign="top"
|AMAP/UNEP 2035 for Hg simulation
|Updates to Hodzic SOA scheme
|Helene Angot (MIT)
|Jared Brewer (Harvard)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Africa nested-grid for GEOS-FP and MERRA-2
|Automated reduction in isoprene scheme
|Eloise Marais (U. Birmingham)
|Dan Westervelt (Lamont-Doherty)
|Science
|Aerosols
|
|
*Delivered to GCST (Dec 2017)


|-valign="top"
|-valign="top"
|West Africa nested-grid for GEOS-FP
|Brown carbon chemsitry
|Mat Evans (York)<br>Eleanor Morris (York)
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate simulation]]
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
|Becky Alexander (UW)
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
|Science
|Convection
|
|


|-valign="top"
|-valign="top"
|Arsenic simulation
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
|Shiliang Wu (MT)
|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"|Structural updates


|-valign="top"
|-valign="top"
|Updated flux diagnostics
|Updated biomass burning emission factors and species
|Chris Holmes (Florida State)<br>[[GCST]]
|Tess Carter (MIT)
|Structural/<br>Benchmarking
|Emissions
|
|


|-valign="top"
|-valign="top"
|Additional modifications for [[FlexChem]], including:
|Updated offline sea salt emissions
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
|Emissions
|[[GCST]]
|Structural
|
|


|-valign="top"
|-valign="top"
|Benchmark of stratospheric simulation
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Dylan Jones (U. Toronto)
|Sam Silva (MIT)
|Benchmarking
|Emissions &<br>Science
|
|
*1-yr benchmarks for GEOS-Chem v11-01d and later include comparisons with OSIRIS O3
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
*Waiting on OSIRIS NO2 data
*Needs to be updated to a more recent GEOS-Chem version
*Waiting on comparisons with ACE-FTS data


|-valign="top"
|-valign="top"
|[[GEOS-Chem_species_units|Uniformity of units]]
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|[[GCST]]
|Bob Yantosca (Harvard)
|Structural
|Model performance
|
|
*Phase 2 (unit uniformity throughout chemistry) to be implemented after Flexchem
*Ongoing (will be done as time allows)
*Phase 3 (unit uniformity in some specialty simulations) will be implemented in pieces with input from 3rd party developers
*Phase 4 (removal of area and area-dependent State_Met variables) will be ongoing


|-valign="top"
|-valign="top"
|ObsPack diagnostic as netCDF replacement for planeflight_mod.F
|Retire all BPCH diagnostics
|Andy Jacobson (NOAA/ESRL)
|Bob Yantosca (Harvard)
|Structural
|Diagnostics
|
|
*Delivered to GCST (May 2017)
*Can be done following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]


|-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]]
|Assess memory leak in GCHP
|[[GCST]]<br>Christoph Keller
|Killian Murphy (York)
|Bug fix/Structural
|Model performance
|
|
 
*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.
|-
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities


|-valign="top"
|-valign="top"
|[[FlexGrid|FlexGrid: Use HEMCO to read met fields and enable nested simulations over any custom domains]]
|Hybrid MPI-OpenMP in GCHP
|Jiawei Zhuang (Harvard)<br>Jintai Lin (PKU)
|Seb Eastham (MIT)<br>Killian Murphy (York)
|Structural
|Model performance
|
|
*Delivered to GCST (Oct 2016)


|-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]]
|Improve run directory templating and creation with init_rd.sh and shared directories
|Seb Eastham (Harvard)
|Jourdan He (WashU)
|Science
|Run directories
|
|
*Delivered to GCST (May 2017)


|-valign="top"
|-valign="top"
|Archival of roughness length for temperature z0T
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
|[[GCST]]
|GCST?
|Met processing
|Documentation
|
|


|}
|}


==== Not prioritized for v11-02 ====
== Over the horizon (6-12 months) ==
 
{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
!width="400px"|Item
!width="250px"|Author(s)
!width="80px"|Type
!width="250px"|Status
 
|-valign="top"
|Sea salt emission from sea ice
|Jiayue Huang (UW)
|Science
|
 
|-valign="top"
|Re-evaluation of SST dependence of sea salt emissions
|Jiayue Huang (UW)
|Science
|
 
|-valign="top"
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Discussion_of_LAI_Data_Sources|Update MODIS LAI fields through 2015]]
|Barron Henderson (UF)
|Science
|


|-valign="top"
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.
|Lightning NOx chemistry parameterization
|Alicia Gressent (MIT)
|Science
|
 
|}
 
=== Almost there (< 6 months) ===


{| 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="80px"|Type
!width="100px"|Model scope
!width="250px"|Status
!width="420px"|Notes and References


|-valign="top"
|-valign="top"
|Aromatics and dicarbonyl chemistry
|Snow / Icy Bromine
|William Porter (MIT)<br>Tzung-May Fu (PKU)
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
|Science
|Chemistry
|
 
|-valign="top"
|Diagnostic for species lifetime
|[[GCST]]
|Science
|
 
|-valign="top"
|Document chemical mechanism in KPP file
|Mat Evans (York)
|Structural
|
 
|-valign="top"
|Carbon bottom up fluxes: anthro, ocean, land
|Kevin Bowman (JPL)
|Science
|
 
|-valign="top"
|GISS-GC (ICECAP/GCAP2) in standard model + benchmark
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
|Science
|
 
|-valign="top"
|CESM-GC offline coupling in standard model + benchmark
|Rokjin Park (SNU)<br>Daniel Rothenberg (MIT)
|Science
|
 
|-valign="top"
|CESM-GC GCHP
|Daniel Rothenberg (MIT)
|Science
|
 
|-valign="top"
|Injection height for fire emissions
|Juliet Zhu (CSU)<br>Emily Fischer (CSU)
|Science
|
 
|-valign="top"
|Diurnal variability for NH3
|Henze group
|Science
|
|


|-valign="top"
|-valign="top"
|OH + NO2 rate update
|Monoterpene oxidation scheme
|Barron Henderson (EPA)
|Jessica Haskins (MIT)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|N2O5 hydrolysis updates
|Fire related VOCs including furans
|Viral Shah (UW)
|Lu Hu (UMT)<br>Lixu Jin (UMT)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Land cover module: Harmonized biosphere-atmosphere exchange and implementing CLM or manual land cover change experiments
|Extension of UCX into the mesosphere
|Jeff Geddes (BU)
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|H2 chemistry in UCX
|Methane flux ingestion
|Chris Holmes (FSU)
|Eloise Marais (UCL)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Uptake of HNO3 onto coarse-mode sea salt
|Dust non-sphericity impacts on surface chem and optical properties
|Prasad Kasibhatla (Duke)
|Inderjeet Singh (WashU)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Photolysis of NITs
|Size-resolved stratospheric aerosol
|Prasad Kasibhatla (Duke)
|Seb Eastham (MIT)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|[[POPs simulation#PCB simulation|PCB simulation]]
|Extend aerosol settling
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
|Eloise Marais (UCL)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|New EDGAR sectoral inventory for Hg (1970-2012)
|Stratospheric aerosol APM
|Amanda Giang (MIT)
|Fangqun Yu (SUNY)
|Science
|Aerosols
|
|


|-valign="top"
|-valign="top"
|Wet deposition parameterizations: pH dependency, Henry's law coefficients, etc.
|Plume-in-grid model
|Sarah Safieddine (MIT)<br>GCST
|Hongwei Sun (Harvard)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Archive GISS met fields from RCP scenarios for community
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
|Lee Murray (Rochester)
|Lee Murray (Rochester)
|Science
|Emissions
|
 
|-valign="top"
|Online O3-LAI coupling in GEOS-Chem
|Amos Tai (CUHK)
|Science
|
|


|-valign="top"
|-valign="top"
|Clean up SOA diagnostics
|Seb aircraft emissions beyond recent 2019 update
|GCST
|Seb Eastham (MIT)
|Structural
|Emissions
|
|


|-valign="top"
|-valign="top"
|Calculation consistency throughout code: surface area, HGF (via species database)
|FRP-based fire emsisions for eastern US at 0.2 deg
|GCST
|Charlie Fite (FSU)
|Structural
|Emissions
|
 
|}
 
=== Over the horizon (6-12 months) ===
 
{| border=1 cellspacing=0 cellpadding=5
|- bgcolor="#cccccc"
!width="400px"|Item
!width="250px"|Author(s)
!width="80px"|Type
!width="250px"|Status
 
|-valign="top"
|GISS-GC GCHP
|Lee Murray (Rochester)
|Science
|
|


|-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"
|Updates to cold-temperature deposition
|Lyatt Jaegle (UW)
|Science
|
 
|-valign="top"
|Simple parameterization for CO2-O3 dependence of stomatal resistance
|Amos Tai (CUHK)
|Science
|
 
|-valign="top"
|NH3 emissions over China
|Lin Zhang (PKU)
|Science
|
 
|-valign="top"
|Using GEOS-Chem within GEOS-5
|Loretta Mickley (Harvard)
|Science
|
 
|-valign="top"
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
|Beata Bukosa (Wollongong)<br>Dylan Jones (UofT)
|Science
|
 
|-valign="top"
|Seasonal EMEP emissions back to 1980
|Mat Evans (York)
|Science
|
|


|-valign="top"
|-valign="top"
|Updates to NO2 dry deposition
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Brian Boys (Dalhousie)
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
|Science
|Emissions<br>CH4 simulation
|
|


|-valign="top"
|-valign="top"
|APM update and integration with most recent GEOS-Chem version
|Modularization of aerosols code for interface with GOCART in GEOS
|Gan Luo (SUNY Albany)
|Christoph Keller (GMAO)
|Structural
|Structural
|
|


|-valign="top"
|-valign="top"
|Cosmogenic tracer production
|Improve load balancing in GCHP
|Lee Murray (Rochester)
|Seb Eastham (MIT)
|Science
|Model performance
|
|


|-valign="top"
|-valign="top"
|Explore resolution-consistent dust emissions
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
*Make high-res concentrations or mass fluxes available offline, implement in met field processing
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
|David Ridley (MIT)<br>GCST<br>Nested Model WG
|Transport
|Science
|
|


|-valign="top"
|-valign="top"
|Dust emissions at nested-grid resolutions
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Yuxuan Wang (U. Houston)<br>Jun Wang (U. Iowa)
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
|Science
|Transport
|
|
*Check for overlap with resolution-consistent dust emissions above


|-valign="top"
|-valign="top"
|[[Wet_deposition#Update_SO2_scavenging_in_convective_updrafts_for_consistency|Update SO2 scavenging in convective updrafts for consistency]]
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
|Duncan Fairlie (NASA/LARC)  
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
|Science
|Transport
|
|


|}
|}


=== 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="400px"|Item
!width="200px"|Feature
!width="250px"|Author(s)
!width="200px"|Contributor(s)
!width="80px"|Type
!width="100px"|Model scope
!width="250px"|Status
!width="420px"|Notes and References
 
|-valign="top"
|GCHP stretched grid
|Jiawei Zhuang (Harvard)
|Science
|
 
|-valign="top"
|1/8 degree nested-grid simulations with GEOS-FP
|Nested Model WG
|Science
|
*Wait for more interest
 
|-valign="top"
|Embedding GEOS-Chem into CESM
|Jean-Francois Lamarque (NCAR)
|Science
|


|-valign="top"
|-valign="top"
|Adjoint of carbon cycle simulation in GCHP
|Updates to Aromatic chemistry
|Kevin Bowman (JPL)
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Isoprene chemistry v2 (new Caltech update)
|Nitrate photolysis
|Kelvin Bates (Caltech)
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Contemporary land cover: developing historical and updated GEOS-Chem land cover maps based on satellite remote sensing
|In aerosol chemistry Halogens
|Jeff Geddes (BU)
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Farquhar-Ball-Barry model to calculate stomatal resistance
|Benchmark box model of GC Chemistry
|Amos Tai (CUHK)<br>Jeff Geddes (BU)
|Katie Travis (NASA)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Impacts of chemistry on ecosystem/carbon cycle
|Alkyl nitrates Alk7, PHAN
|Kevin Bowman (JPL)<br>Anthony Bloom (JPL)
|Katie Travis (NASA)
|Science
|Chemistry
|
 
|-valign="top"
|Improved lightning emission scheme
|Lee Murray (Rochester)
|Science
|
|


|-valign="top"
|-valign="top"
|Resolution-independent lightning NOx
|Add stratospheric ozone species to full-chemistry simulations
|Lee Murray (Rochester)
|Lee Murray (Rochester)
|Science
|Chemistry
|
 
|-valign="top"
|Bidirectional NH3 emissions
|Juliet Zhu (CSU)
|Science
|
 
|-valign="top"
|Country-based weekday/weekend variability for EDGAR 4.2
|Lee Murray (Rochester)<br>Christoph Keller (Harvard)
|Science
|
 
|-valign="top"
|Update keytone photolysis
|Jared Brewer (CSU)<br>Emily Fischer (CSU)
|Science
|
 
|-valign="top"
|Small alkyl nitrates
|Jenny Fisher (Wollongong)
|Science
|
 
|-valign="top"
|YIBS-GC chemistry-biosphere-fire coupling
|Loretta Mickley (Harvard)<br>Xu Yue (IAP)
|Science
|
 
|-valign="top"
|Nitrogen-LAI coupling
|Lin Zhang (PKU)<br>Amos Tai (CUHK)
|Science
|
 
|-valign="top"
|Implementing humidity/VPD dependence of dry deposition
|Jennifer Murphy (U. Toronto)
|Science
|
 
|-valign="top"
|SO2 wet scavenging
|Duncan Fairlie (NASA Langley)
|Science
|
|


|-valign="top"
|-valign="top"
|Heterogeneous sulfate production
|Perchlorate chemistry
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
|Yuk Chun Chan (UWAB)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|MOSAIC implementation
|Explicit heterogeneous sulfate chemistry
|Sebastian Eastham (Harvard)
|Katie Travis (NASA)<br>Becky Alexander (UT)
|Science
|Chemistry
|
|


|-valign="top"
|-valign="top"
|Particle size climatology
|HOx and ozone "emissions" from lightning as option in model to play with
|Fangqun Yu (SUNY Albany)
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Sea salt/dust size distribution
|Sea salt aerosol from sea ice leads
|David Ridley (MIT)<br>Colette Heald (MIT)
|Hannah Horowitz (U. Illinois)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Updates to GTMM
|Drought-stress algorithm
|Rebecca Stern (Harvard)
|Wei Li (U. Houston)
|Science
|
|
|-valign="top"
|Tracer transport ocean
|Chris Holmes (FSU)
|Science
|
|


|-valign="top"
|-valign="top"
|Include Hg in full chemistry simulation
|Biomass burning injection height profiles
|Noelle Selin (MIT)
|Inderjeet Singh (WashU)
|Science
|Emissions
|
|


|-valign="top"
|-valign="top"
|Goddard seasonal weather prediction in GCHP
|OCIM integration
|Kevin Bowman (JPL)
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
|Science
|
|
|-valign="top"
|Climate index diagnostics (drought, etc.)
|Chemistry-ecosystems-climate WG
|Structural
|
|


|-valign="top"
|-valign="top"
|Joint CO/CO2/CH4 simulation
|Updating landcover products in GEOS-Chem
|Nicholas Deutscher (U. Wollongong)
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
|Science
|Input data
|
|


|-valign="top"
|-valign="top"
|Carbon coupling: oceans and terrestrial models
|Dry deposition physical improvement
|Chris Holmes (FSU)
|Chris Holmes (FSU)
|Science
|Dry deposition
|
|
*Ocim-pure physical transport, ECCO-Darwin ocean biogeochemistry


|-valign="top"
|-valign="top"
|DMS oxidation scheme updating
|TOMAS WRF-GC in regional Thailand simulation
|Qianjie Chen (UW)<br>Chemistry WG
|Win Trivitayanurak (Chulalongkorn U)
|Science
|Aerosols
|
 
|-valign="top"
|Limiting NH3 uptake due to OA
|Rachel Silvern (Harvard)
|Science
|
|


|}
|}
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 20:44, 12 May 2017 (UTC)

Revision as of 20:55, 18 April 2024

On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the Working Groups and the Steering Committee. For history of past releases see the GEOS-Chem Versions wiki page.

Merged and awaiting release

See the links below for items merged and awaiting release.

Mergeable at any time Version in development
GEOS-Chem no-diff-to-benchmark GEOS-Chem 14.4.0

Feature integration in progress

Features listed in this table are actively being integrated into GEOS-Chem by the GEOS-Chem Support Team. In addition, we continuously implement structural updates in the model to maintain and develop coupling with other models including GEOS, CESM, and the model adjoint.

Feature Contributor(s) Model scope Ease of implementation Notes and References
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech) 		Emissions Simple
Parameterization of SNA and OM dry size Haihui Zhu (WashU) Aerosols Medium
New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa) 		Emissions Medium
Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4 Lizzie Lundgren (Harvard) GC-Classic Medium
Replace ISORROPIA with HETPv1.0 Lizzie Lundgren (Harvard)
Seb Eastham (ICL) 		Aerosol thermodynamics Medium
Only convert units for species that need it Bob Yantosca (Harvard) Unit conversions Medium
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics Medium

Prioritized and in the queue

Features listed in this table are prioritized for integration into GEOS-Chem in the near future.

Feature Contributor(s) Model scope Ease of implementation Delivery status Notes and References
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)
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
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