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

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(List of priorities as of Oct 2016)
(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/2015/index.html International GEOS-Chem Meeting (IGC7)] in May 2015 and has been continuously updated since 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 Oct 2016 ==
+
See the links below for items merged and awaiting release.
  
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 v11-01]] wiki page.
+
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="300px"|Mergeable at any time
 +
!width="200px"|Version in development
  
The items listed below are in different stages of readiness and will be included in future versions of the model.
+
|-valign="top"
 +
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
 +
|align="center"|'''[[GEOS-Chem 14.4.0]]'''
  
=== Ready to go in ===
+
|}
  
{| border=1 cellspacing=0 cellpadding=5
+
== Feature integration in progress ==
|- bgcolor="#cccccc"
+
 
!width="400px"|Item
+
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.
!width="300px"|Author(s)
+
 
!width="400px"|Status
+
{| border=1 cellspacing=0 cellpadding=5  
 +
|-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"
|Halogen chemistry updates
+
|GCHP carbon simulation
|Tom&aacute;s Sherwen (York)<br>Johan Schmidt (Harvard)<br>[[Chemistry Issues|Oxidants and Chemistry WG]]
+
|Melissa Sulprizio (Harvard)<br>Bob Yantosca (Harvard)
 +
|Carbon
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/1992 geos-chem PR #1992]
 +
*[https://github.com/geoschem/GCHP/issues/339 GCHP Issue #339]
  
 
|-valign="top"
 
|-valign="top"
|[[Updates_in_JPL_Publication_15-10|Updating chemistry rate constants based on ''JPL Publication 15-10'']]
+
|KORUS-AQ emissions for East Asia (as an option)
|Barron Henderson (U. Florida)<br>Mat Evans (U. York)<br>[[Chemistry Issues|Oxidants and Chemistry WG]]
+
|Katie Travis (NASA)
 +
|Emissions
 +
|Simple
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|[[PAN|PAN updates]]
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
|Emily Fischer (CSU)
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
 +
|Emissions
 +
|Simple
 
|
 
|
*Delivered to GCST (May 2013)
 
  
 
|-valign="top"
 
|-valign="top"
|[[NOx-Ox-HC-aerosol#Monthly mean surface distributions|Monthly mean surface methane distributions]]
+
|New version of CEDS at 0.1 deg
|Lee Murray (NASA GISS/LDEO)
+
|Dandan Zhang (WashU)
 +
|Emissions
 +
|Simple
 
|
 
|
 +
*[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)
 +
|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"
|[[Aerosol_optical_properties#Add_BC_absorption_enhancement_factor|Update density of BC to 1.8 and add absorption enhancement factor in input.geos]]
+
|Remove differences in GC-Classic when breaking up runs in time
|Xuan Wang (MIT)
+
|Lizzie Lundgren (Harvard)
 +
|GC-Classic
 +
|Medium
 
|
 
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Jan 2016)
 
  
 
|-valign="top"
 
|-valign="top"
|[[GEOS-Chem_Output_Files#NetCDF_File_Format|NetCDF Output Phase 3a: Output diagnostics in NetCDF format]]
+
|GCHP advection diagnostics
|[[GCST]]
+
|Lizzie Lundgren (Harvard)
 +
|GCHP diagnostics
 +
|Simple
 
|
 
|
 +
*[https://github.com/geoschem/GCHP/pull/395 gchp PR #395]
  
 
|-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]]
+
|Only convert units for species that need it
|[[GCST]], Christoph Keller
+
|Bob Yantosca (Harvard)
 +
|Unit conversions
 +
|Medium
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/2072 geos-chem PR #2072]
 +
*'''This update breaks TOMAS, further development is needed'''
 +
 +
|}
 +
 +
== Prioritized and in the queue ==
 +
 +
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
 +
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!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"
|Species Database Phase 3:
+
|[https://github.com/geoschem/geos-chem/issues/1867 Online H2 chemistry]
*Harmonizing Henry's Law coefficients across wet and dry deposition
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
|[[GCST]]
+
|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"
|[[GEOS-Chem_tracer_units|Uniformity of units]]
+
|ALK4 & R4N2 chemistry
|Lizzie Lundgren ([[GCST]])
+
|Jared Brewer (UMN)
 +
|Chemistry
 +
|TBD
 +
|Not delivered
 
|
 
|
*Phase 2 (unit uniformity throughout chemistry) to be implemented after Flexchem
+
*[https://github.com/geoschem/geos-chem/issues/1625 geos-chem issue #1625]
*Phase 3 (unit uniformity in some specialty simulations) will be implemented in pieces with input from 3rd party developers
+
*[https://acmg.seas.harvard.edu/files/acmg/files/brewer2022.pdf Brewer, J.F. et al., J. Geophys. Res., submitted 2023.]
*Phase 4 (removal of area and area-dependent State_Met variables) will be ongoing
+
  
 
|-valign="top"
 
|-valign="top"
|[[Wet_deposition#Update_SO2_scavenging_in_convective_updrafts_for_consistency|Temporary fix to remove SO2 scavenging in convective updrafts]]
+
|[https://github.com/geoschem/geos-chem/pull/1983 Updated gravitational settling, dry mass-weighted mean diameters and hygroscopic growth in aerosol dry deposition]
|Duncan Fairlie (NASA/LARC)  
+
|Yanshun Li (WashU)
 +
|Aerosols
 +
|Simple
 +
|Delivered<br>Oct 2023
 
|
 
|
*Delivered to [[GEOS-Chem Support Team|GCST]] (Nov 2015)
+
*[https://acp.copernicus.org/articles/23/12525/2023/acp-23-12525-2023.html Li et al., ACP, 2023.]
*'''''Duncan Fairlie wrote on 03 Mar 2016:'''''
+
*[https://github.com/geoschem/geos-chem/pull/1983 geos-chem PR #1983]
:I don't think my fix for this issue is ready for prime time. I get chimneys of essentially unscavenged SO2 extending into the UTLS during Asian monsoon, leading to too much sulfate aloft. I think replacing the instantaneous titration of H2O2 in the standard code with the correct oxidation of SO2 by H2O2 (and O3?) is necessary.
+
* '''Waiting on code updates from developer'''
  
 
|-valign="top"
 
|-valign="top"
|[[Wet_deposition#Update_SO2_scavenging_in_convective_updrafts_for_consistency|Update SO2 scavenging in convective updrafts for consistency]]
+
|Mass flux regridding fix in MAPL
|Duncan Fairlie (NASA/LARC)  
+
|Lizzie Lundgren (Harvard)<br>Seb Eastham (MIT)
 +
|GCHP input regridding
 +
|Medium
 
|
 
|
 +
|
 +
*[https://github.com/GEOS-ESM/MAPL/pull/2056 GEOS-ESM/MAPL PR #2056]
  
 
|-valign="top"
 
|-valign="top"
|Lightning NOx chemistry parameterization
+
|[https://github.com/geoschem/geos-chem/issues/1747 Parameterization of SNA and OM dry size]
|Alicia Gressent (MIT)
+
|Haihui Zhu (WashU)
 +
|Aerosols
 +
|Medium
 +
|Delivered<br>Aug 2023
 
|
 
|
 +
*[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]
 +
*'''Currently on hold, as this update requires further modifications in the Cloud-J repository'''
  
 
|-valign="top"
 
|-valign="top"
|Fix to direct/diffuse radiation
+
|Capture all trop and PBL height changes in budget diagnostics
|Katie Travis (Harvard)
+
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
 +
|Diagnostics
 +
|Medium
 
|
 
|
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 +
 +
|}
 +
 +
== Ready to go in ==
 +
 +
Features listed in this table are ready to go in but have either not been delivered or are not yet prioritized for integration into GEOS-Chem.
 +
 +
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="100px"|Delivery status
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|[[Dry_deposition#Fix_for_NO3_.2B_ISOP_product|Fix for NO3 + ISOP product]]
+
|Geologic emission of ethane and propane
|Katie Travis (Harvard)
+
|Matthew Rowlinson and Mat Evans(York)
 +
|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"
|Update OH + NO2 rate
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Barron Henderson (UF)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
 +
|Science
 +
|Delivered<br>Feb 2021
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
|Lightning update based on Travis et al. (submitted) and Zhang et al. (2014, ACP)
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Katie Travis (Harvard)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
 +
|Emissions
 +
|Delivered<br>Jul 2021
 
|
 
|
 +
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
|Add aqueous isoprene uptake to SOA scheme
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
|Eloise Marais (Harvard)
+
|Shixian Zhai (Harvard)
 +
|Emissions
 +
|Delivered
 
|
 
|
*Delivered to GCST (Jul 2016)
+
*Need permission from Qiang Zhang (Tsinghua U.) to distribute data
  
 
|-valign="top"
 
|-valign="top"
|Enhance default GEOS-Chem simple SOA
+
|DMS Chemistry
|Aerosol Working Group Chairs
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
 +
|Chemistry
 +
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|[http://www.atmos-chem-phys.net/16/2819/2016/ A snow NOx source from deep snowpack]
+
|Organic acids (RCOOH)
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
|Katie Travis (NASA)
 +
|Chemistry
 +
|Not delivered
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|FlexGrid: Use HEMCO I/O and regridding capabilities to read and regrid met fields
+
|Improve carbon & nitrogen conservation in reactions
|Jiawei Zhuang (Harvard)<br>Jintai Lin (PKU)
+
|Kelvin Bates (Harvard)
 +
|Chemistry
 +
|Not delivered
 
|
 
|
*Delivered to GCST (Oct 2016)
 
  
 
|-valign="top"
 
|-valign="top"
|[[POPs simulation#PCB simulation|PCB simulation]]
+
|Blowing snow sea salt in TOMAS
|Carey Friedman (MIT)<br>Helen Amos (Harvard)
+
|Betty Croft (Dalhousie)
 +
|Aerosols
 +
|Not delivered
 +
|
 +
 
 +
|-valign="top"
 +
|[https://pubs.rsc.org/en/content/articlelanding/2022/EM/D2EM00019A Australian anthropogenic Hg emissions]
 +
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)<br> Hannah Horowitz (U. Illinois)<br>Viral Shah (Harvard)
 +
|Hg simulation
 +
|Not delivered
 +
|
 +
 
 +
|-valign="top"
 +
|WRF-GC Hg simulation
 +
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation<br>WRF-GC
 +
|Not delivered
 +
|
 +
 
 +
|-valign="top"
 +
|Updated HgII gas-partical partitioning
 +
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
 +
|Hg simulation
 +
|Not delivered
 +
|
 +
*Should be option, not default
 +
 
 +
|-valign="top"
 +
|Dry deposition to F90 (readability)
 +
|Chris Holmes (FSU)
 +
|Dry deposition
 +
|Not delivered
 
|
 
|
  
 
|}
 
|}
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 17:56, 18 October 2016 (UTC)
+
== Almost there (< 6 months) ==
  
=== Almost there (< 6 months) ===
+
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
  
{| border=1 cellspacing=0 cellpadding=5
+
{|border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
!width="400px"|Item
+
!width="200px"|Feature
!width="300px"|Author(s)
+
!width="200px"|Contributor(s)
!width="400px"|Status
+
!width="100px"|Model scope
 +
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|Update MODIS LAI fields through 2015
+
|Replace ISORROPIA with [https://gmd.copernicus.org/preprints/gmd-2023-159/gmd-2023-159.pdf HTEPv1.0]
|Barron Henderson (UF)
+
|Seb Eastham (MIT)<br>Lizzie Lundgren (Harvard)
 +
|Aerosol thermodynamics
 
|
 
|
 +
*Will be git submodule
  
 
|-valign="top"
 
|-valign="top"
|[[Python code for GEOS-Chem|Python GEOS-Chem output processing and visualization package]]
+
|PPN+hv, PPN+OH
|Beno&icirc;t Bovy (U. Li&egrave;ge-Belgium)
+
|Robert Ryan (UCL)
 +
|Chemistry
 
|
 
|
*Users may download, test it, and submit feedback to Benoit Bovy.
 
  
 
|-valign="top"
 
|-valign="top"
|Benchmark of stratosphere simulation
+
|MBO
|Dylan Jones (U. Toronto)
+
|Michael Vermeuel (UMN)
 +
|Chemistry
 
|
 
|
*1-yr benchmarks for GEOS-Chem v11-01d and later include comparisons with OSIRIS O3
 
*Waiting on OSIRIS NO2 data
 
*Waiting on comparisons with ACE-FTS data
 
  
 
|-valign="top"
 
|-valign="top"
|Benchmark for nested NA model
+
|Initial conditions for CH4 correcting background and stratospheric biases
|Jun Wang (UNL)
+
|Todd Mooring (Harvard)
 +
|Methane simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|High-resolution regional emissions (to be implemented via HEMCO)
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|Lin Zhang (PKU)<br>Yuxuan Wang (Texas A&M)
+
|Bob Yantosca (Harvard)
 +
|Aerosols<br>Structural
 
|
 
|
 +
*Ongoing
  
 
|-valign="top"
 
|-valign="top"
|Updates to isoprene chemistry, includes:
+
|Re-binning of off-line sea salt and dust for use in TOMAS
*Fast photolysis of carbonyl nitrates
+
|Betty Croft (Dalhousie)
*Aerosol uptake of organic nitrates
+
|Aerosols
|Jenny Fisher (U. Wollongong)<br>Elo&iuml;se Marais (Harvard)<br>Kelvin Bates (Caltech)<br>Katie Travis (Harvard)
+
 
|
 
|
*This has already been added to the SEAC4RS research version of GEOS-Chem
 
  
 
|-valign="top"
 
|-valign="top"
|3D chemical source for CO2 and CO; OH for tagged CO and CH4 simulations
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
|Dylan Jones (U. Toronto)
+
|Betty Croft (Dalhousie)
 +
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Hg code updates (chemistry, ocean, land)
+
|ML algorithms for bulk aerosols
|[[Hg and POPs Working Group]]
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
 +
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Nested CO2, CH4, Hg, TOMAS, adjoint, etc.
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
|[[Nested Model Working Group]]
+
|Shixian Zhai (Harvard)
 +
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updated nighttime isoprene chemistry
+
|Updates to Hodzic SOA scheme
|Rebecca Schwantes (Caltech)
+
|Jared Brewer (Harvard)
 +
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updated organic deposition
+
|Automated reduction in isoprene scheme
|Katie Travis (Harvard)<br>Jenny Fisher (U. Wollongong)
+
|Dan Westervelt (Lamont-Doherty)
 +
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|EPA-derived BC/OA emissions over US (1990-2012)
+
|Brown carbon chemsitry
|David Ridley (MIT)
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
 +
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Remove dependence of species drydep on HNO3 drydep
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
|Katie Travis (Harvard)<br>Jenny Fisher (U. Wollongong)
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
 +
|Convection
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|MOSAIC implementation
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
|Sebastian Eastham (Harvard)
+
|Jintai Lin (PKU)
 +
|Emissions
 
|
 
|
 +
*Horizontal resolution: 5km, temporal resolution: JJA mean
 +
*monthly data will be available at a later stage; please contact us
  
 
|-valign="top"
 
|-valign="top"
|Updated documentation on setting up new nested domains
+
|Updated biomass burning emission factors and species
|Lin Zhang (PKU)<br>Yuxuan Wang (Texas A&M)
+
|Tess Carter (MIT)
 +
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Nested model publication wiki page
+
|Updated offline sea salt emissions
|Jun Wang (UNL)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
 +
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Past and future fire emissions under RCPs
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|Loretta Mickley (Harvard)<br>Yuhang Wang (GIT)<br>Shiliang Wu (MT)
+
|Sam Silva (MIT)
 +
|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"
|[[Aerosols_Working_Group#Sedimentation_of_stratospheric_aerosols|Sedimentation of stratospheric aerosols]]
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Sebastian Eastham (Harvard)
+
|Bob Yantosca (Harvard)
 +
|Model performance
 
|
 
|
 +
*Ongoing (will be done as time allows)
  
 
|-valign="top"
 
|-valign="top"
|Additional modifications for [[FlexChem]], including:
+
|Retire all BPCH diagnostics
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, UCX, SOA, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Bob Yantosca (Harvard)
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Diagnostics
|Mike Long (Harvard), [[GCST]]
+
 
|
 
|
 +
*Can be done following the [https://github.com/geoschem/geos-chem/pull/1569 TOMAS update for GCHP]
  
 
|-valign="top"
 
|-valign="top"
|Surface ocean Hg boundary conditions from MITgcm
+
|Assess memory leak in GCHP
|Hannah Horowitz (Harvard)
+
|Killian Murphy (York)
 +
|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.
 +
 
 +
|-valign="top"
 +
|Hybrid MPI-OpenMP in GCHP
 +
|Seb Eastham (MIT)<br>Killian Murphy (York)
 +
|Model performance
 +
|
 +
 
 +
|-valign="top"
 +
|Improve run directory templating and creation with init_rd.sh and shared directories
 +
|Jourdan He (WashU)
 +
|Run directories
 +
|
 +
 
 +
|-valign="top"
 +
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
 +
|GCST?
 +
|Documentation
 
|
 
|
*Paper is being prepared for submission
 
  
 
|}
 
|}
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 18:30, 18 October 2016 (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="300px"|Author(s)
+
!width="200px"|Contributor(s)
!width="400px"|Status
+
!width="100px"|Model scope
 +
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|Dust emissions at nested-grid resolution
+
|Snow / Icy Bromine
|Yuxuan Wang (Texas A&M)<br>Jun Wang (UNL)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Archive meteorological fields with higher resolution (for RCPs)
+
|Monoterpene oxidation scheme
|Lee Murray (NASA GISS/LDEO)
+
|Jessica Haskins (MIT)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Land cover module in GEOS-Chem
+
|Fire related VOCs including furans
|Jeffrey Geddes (MIT)<br>Michael Long (Harvard)
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Improved lightning emission scheme
+
|Extension of UCX into the mesosphere
|Lee Murray (NASA GISS/LDEO)
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Archive high resolution wind fields for sea salt
+
|Methane flux ingestion
|[[GEOS-Chem Support Team]]
+
|Eloise Marais (UCL)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|VBS SOA option
+
|Dust non-sphericity impacts on surface chem and optical properties
|Rokjin Park (SNU)
+
|Inderjeet Singh (WashU)
 +
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Kz eddy mixing scheme
+
|Size-resolved stratospheric aerosol
|Karen Yu (Harvard)
+
|Seb Eastham (MIT)
 +
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Merge standard simulation with specialty simulations for OVOC, acids, aromatics, dicarbonyls, terpenes
+
|Extend aerosol settling
|Dylan Millet (UMN)<br>Xin Chen (UMN)
+
|Eloise Marais (UCL)
 +
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Cl chemistry updates
+
|Stratospheric aerosol APM
|Lyatt Jaegl&eacute; (UW)
+
|Fangqun Yu (SUNY)
 +
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Automate redistribution of NOx in HEMCO
+
|Plume-in-grid model
|Lee Murray (NASA GISS/LDEO)
+
|Hongwei Sun (Harvard)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Injection height for fire emissions
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
|Emily Fischer (CSU)
+
|Lee Murray (Rochester)
 +
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Option for daily OH, etc. for Hg simulation
+
|Seb aircraft emissions beyond recent 2019 update
|Noelle Selin (MIT)
+
|Seb Eastham (MIT)
 +
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|DMS oxidation scheme updating
+
|FRP-based fire emsisions for eastern US at 0.2 deg
|Tom Breider (Harvard)<br>Becky Alexander (U. Washington)<br>[[Chemistry Issues|Oxidants and Chemistry Working Group]]
+
|Charlie Fite (FSU)
 +
|Emissions
 
|
 
|
*Currently being worked on by a member of the [http://www.atmos.washington.edu/blog/beckya/group-members/ Alexander group]
 
  
 
|-valign="top"
 
|-valign="top"
|Historical Hg emissions (1850-present)
+
|Hg iodine chemistry
|Hannah Horowitz (Harvard)
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation
 
|
 
|
*Awaiting completion of David Street's revised 1850-present inventory
 
  
 
|-valign="top"
 
|-valign="top"
|Joint CO/CO2/CH4 forward model simulation
+
|Hg simulation in GCHP
|Nicholas Deutscher (U. Wollongong)
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
 +
|Hg simulation
 
|
 
|
  
|}
+
|-valign="top"
 +
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
 +
|Yanxu Zhang (Nanjing U.)
 +
|Hg simulation
 +
|
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 18:54, 18 October 2016 (UTC)
+
|-valign="top"
 +
|Dry deposition diagnostics by land cover
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
  
=== Longer term (12-24 months)===
+
|-valign="top"
 +
|Dry deposition process diagnostics
 +
|Holly Nowell (FSU)
 +
|Diagnostics
 +
|
  
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
|- bgcolor="#cccccc"
+
|Isotope simulation for CO and CH4 in GCHP
!width="400px"|Item
+
|Lee Murray (Rochester)
!width="300px"|Author(s)
+
|Carbon simulation
!width="400px"|Status
+
|
  
 
|-valign="top"
 
|-valign="top"
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate and nitrate simulation]], including
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
*[[Sulfate_aerosols#Metal_catalyzed_oxidation_of_SO2|Metal catalyzed oxidation of SO2]] (as a switch)
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
|Becky Alexander (UW)
+
|Emissions<br>CH4 simulation
 
|
 
|
*These updates been implemented in v9-02, but have not been successfully merged with HEMCO in v10-01
 
*Improvements for the tagged nitrate simulation are in the pipeline
 
  
 
|-valign="top"
 
|-valign="top"
|CO2 dependence of stomata conductance in dry deposition
+
|Modularization of aerosols code for interface with GOCART in GEOS
|Amos Tai (CUHK)
+
|Christoph Keller (GMAO)
 +
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Bi-directional NH3 emissions
+
|Improve load balancing in GCHP
|Juliet Zhu (CSU)<br>Lin Zhang (PKU)
+
|Seb Eastham (MIT)
 +
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Arsenic simulation
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
|Shiliang Wu (MT)
+
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
 +
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Emission scheme of dust: subgrid wind variation to remove resolution dependence and better interannual variability
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|David Ridley (MIT)
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
 +
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Ozone damage to vegetation
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
|Amos Tai (CUHK)
+
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>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.
 +
 +
{| 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"
|Implement biogenic emissions of ethane, propane
+
|Updates to Aromatic chemistry
|Zitely Tzompa (CSU)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Global evaluation of using LWC and ICW variables from met fields
+
|Nitrate photolysis
|[http://acmg.seas.harvard.edu/geos/geos_people.html#ucla UCLA group]<br>Hongyu Liu (NIA/NASA LARC)<br>Betty Croft (Dalhousie)
+
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Subgrid scale precipitation variability
+
|In aerosol chemistry Halogens
|[http://acmg.seas.harvard.edu/ Harvard group]
+
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Dry deposition: Update the ozone dry deposition scheme
+
|Benchmark box model of GC Chemistry
|[http://www.chem.utoronto.ca/wp/murphygroup/ Murphy group] (UofT)
+
|Katie Travis (NASA)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Country-based weekend/weekday variability for EDGAR v4.2
+
|Alkyl nitrates Alk7, PHAN
|Lee Murray (NASA GISS/LDEO)<br>Christoph Keller (Harvard)
+
|Katie Travis (NASA)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Sea salt emission from sea ice
+
|Add stratospheric ozone species to full-chemistry simulations
|Jiayue Huang (UW)
+
|Lee Murray (Rochester)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Resolution-independent lightning NOx scaling
+
|Perchlorate chemistry
|Lee Murray (NASA GISS/LDEO)
+
|Yuk Chun Chan (UWAB)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Nested-grid model with GEOS-FP at 1/2&deg; x 5/8&deg; resolution
+
|Explicit heterogeneous sulfate chemistry
|[[Nested Model Working Group]]
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
 +
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Re-evaluation of SST dependence of sea salt emissions
+
|HOx and ozone "emissions" from lightning as option in model to play with
|Jiayue Huang (UW)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
 +
|Emissions
 
|
 
|
  
|}
+
|-valign="top"
 +
|Sea salt aerosol from sea ice leads
 +
|Hannah Horowitz (U. Illinois)
 +
|Emissions
 +
|
  
--[[User:Melissa Payer|Melissa Sulprizio]] 14:08, 11 May 2015 (EDT)
+
|-valign="top"
 +
|Drought-stress algorithm
 +
|Wei Li (U. Houston)
 +
|
 +
|
  
=== On hold indefinitely ===
+
|-valign="top"
 +
|Biomass burning injection height profiles
 +
|Inderjeet Singh (WashU)
 +
|Emissions
 +
|
  
{| border=1 cellspacing=0 cellpadding=5
+
|-valign="top"
|- bgcolor="#cccccc"
+
|OCIM integration
!width="400px"|Item
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
!width="300px"|Author(s)
+
|
!width="400px"|Status
+
|
  
 
|-valign="top"
 
|-valign="top"
|TNO emissions over Europe (7km)
+
|Updating landcover products in GEOS-Chem
|[http://acmg.seas.harvard.edu/geos/geos_people.html#athens Greece team]
+
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
 +
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Update HCN simulation, implement in standard model via Flexchem
+
|Dry deposition physical improvement
|Jenny Fisher (U. Wollongong)
+
|Chris Holmes (FSU)
 +
|Dry deposition
 
|
 
|
  
|}
+
|-valign="top"
 +
|TOMAS WRF-GC in regional Thailand simulation
 +
|Win Trivitayanurak (Chulalongkorn U)
 +
|Aerosols
 +
|
  
--[[User:Melissa Payer|Melissa Sulprizio]] ([[User talk:Melissa Payer|talk]]) 14:14, 20 October 2016 (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