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

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On this page we list the current priorities for GEOS-Chem development.  This list 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.
+
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main 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.
+
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]].
  
== List of priorities from IGC8 ==
+
== Release schedule ==
  
The items listed below are in different stages of readiness and will be included in future versions of the model.
+
Please see the [http://wiki.seas.harvard.edu/geos-chem/images/e/e1/GEOS-Chem_Release_Proposal.pdf GEOS-Chem Release Proposal] outlining the procedure and schedule for releasing GEOS-Chem versions.  
  
=== Slated for v11-03 ===
+
== Merged and awaiting release ==
  
The following updates are now slated for inclusion into [[GEOS-Chem v11-03]]:
+
See the links below for items merged and awaiting release.
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
!width="400px"|Feature
+
!width="200px"|Patch version in development
!width="250px"|Submitted by
+
!width="200px"|Major version in development
!width="100px"|Type
+
!width="300px"|Status
+
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
  
 
|-valign="top"
 
|-valign="top"
|[[Transport_Working_Group#Common_set_of_tracers_in_GEOS-Chem_and_GEOS|Common set of tracers in GEOS-Chem and GEOS]]
+
|align="center"| -
|Transport WG<br>[[GCST]]
+
|align="center"|'''[[GEOS-Chem 14.0.0]]'''
|Benchmarking
+
 
|
+
|}
*Ready to be added
+
 
 +
== 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.
 +
 
 +
{| 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
  
|-
 
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
 
  
 
|-valign="top"
 
|-valign="top"
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
+
|TOMAS in GCHP
|Sebastian Eastham (MIT)
+
|Betty Croft (WashU)
|Science
+
|Aerosols
 +
|Simple
 
|
 
|
*Ready to be added
+
*[https://github.com/geoschem/GCHP/pull/221 geoschem/GCHP PR #221]
 +
*[https://github.com/geoschem/geos-chem/pull/1261 geoschem/geos-chem PR #1261]
 +
*[https://github.com/geoschem/HEMCO/pull/145 geoschem/HEMCO PR #145]
  
 
|-valign="top"
 
|-valign="top"
|[[Chemistry_Issues#Script_for_evaluating_carbon_balance|Script for checking N, C, etc. balance in chemistry mechanism]]
+
|[https://gmd.copernicus.org/articles/13/2475/2020/gmd-13-2475-2020.pdf Adaptive chemical solver] (as option) / KPP 3.0.0
|Barron Henderson (EPA)
+
|Mike Long (Harvard) <br> Haipeng Lin (Harvard) <br> Bob Yantosca (GCST) <br> Lu Shen (PKU)
|Software
+
|Chemistry
 +
|Complicated
 
|
 
|
 
+
*Lin, H., M.S. Long, R. Sander, R.M. Yantosca, L.A. Estrada, L. Shen, and D.J. Jacob, An adaptive auto-reduction solver for speeding up integration of chemical kinetics in atmospheric chemistry models: implementation and evaluation in the Kinetic Pre-Processor (KPP) version 3.0.0, submitted to JAMES,  https://doi.org/10.31223/X5505V, 2022.
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Emissions updates
+
|[https://acp.copernicus.org/articles/19/7055/2019/ Joint CO2-CO-CH4-OCS simulation via KPP]
 +
|Beata Bukosa (NIWA)<br>Kevin Bowman (JPL)<br>Mike Long (Harvard)
 +
|Specialty simulation
 +
|Medium
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/654 geoschem/geos-chem #654]
  
 
|-valign="top"
 
|-valign="top"
|[[Volcanic_SO2_emissions_from_Aerocom#OMI-based_volcanic_emissions|OMI-based volcanic emissions 2005-2012]]
+
|RO2 diagnostic
|Cui Ge (U. Iowa)<br>Jun Wang (U. Iowa)
+
|Melissa Sulprizio (Harvard)
|Science
+
|Diagnostics
 +
|Simple
 
|
 
|
*Need to implement a fix to handle missing data for 2012/09 thru 2012/12.  We can do one of 2 things:
 
**Create files with zero emissions for 2012/09 thru 2012/12.
 
***But because data for 2013- is copied from 2012, this will mean that the last 3 months of the year have no volcano emissions.
 
**Link to the existing volcano emsisions files for September thru December
 
  
 
|-valign="top"
 
|-valign="top"
|[[Mineral_dust_aerosols#Anthropogenic_PM2.5_dust_source_in_GEOS-Chem|Anthropogenic PM2.5 dust source]]
+
|[https://github.com/geoschem/geos-chem/issues/770 Output satellite diagnostics as NetCDF]
|Sajeev Philip (Dalhousie)
+
|Eloise Marais (UCL)  
|Science
+
|Diagnostics
 +
|Simple
 
|
 
|
*Need to fix an "under-the-hood" issue in HEMCO that causes 1200 Tg of dust to be emitted by this update.
+
*See [https://github.com/geoschem/geos-chem/pull/1134 geoschem/geos-chem #1134]
  
 
|-valign="top"
 
|-valign="top"
|[[FINNv1_biomass_burning_emissions|FINN biomass burning emissions for 2014-2016]]
+
|[https://github.com/geoschem/geos-chem/issues/331 Provide climatologies for open fire emissions]
|Barron Henderson (US EPA)
+
|Melissa Sulprizio (Harvard)
|Science
+
|Emissions
 +
|Simple
 
|
 
|
*Pending receipt of corrected data files
 
  
 
|-valign="top"
 
|-valign="top"
|EPA NEI2011 Version EK
+
|[https://github.com/geoschem/geos-chem/issues/655 Climatologies for lightning NOx]
|Zitely Tzompa-Sosa (CSU)<br>Emily Fischer (CSU)
+
|Lee Murray (Rochester)
|Science
+
|Emissions
 +
|Simple
 
|
 
|
*Need extra time for validation
 
  
 
|-valign="top"
 
|-valign="top"
|GFAS biomass burning emissions
+
|[https://github.com/geoschem/geos-chem/discussions/1022 Add new species concentration diagnostic in units of molec/cm3]
|Mat Evans (York)
+
|Haipeng Lin (Harvard)
|Science
+
|Diagnostics
 +
|Simple
 
|
 
|
 
+
*See [https://github.com/geoschem/geos-chem/pull/1264 geoschem/geos-chem PR #1264]
|-
+
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
+
  
 
|-valign="top"
 
|-valign="top"
|Sea salt aerosol alkalinity
+
|Identify and remove memory leaks and similar issues
|Qianjie Chen (UW)<br>Becky Alexander (UW)<br>Xuan Wang (Harvard)
+
|Bob Yantosca (Harvard)
|Science
+
|Structural
 +
|Medium
 
|
 
|
*UW version delivered to GCST (Nov 2017)
+
*See [https://github.com/geoschem/geos-chem/pull/1353 github.com/geos-chem PR #1353]
  
 
|-valign="top"
 
|-valign="top"
|VBS SOA option
+
|Update transport tracer simulation for consistency with the tracer gridded component in GEOS
|Rokjin Park (SNU)
+
|Melissa Sulprizio (Harvard)
|Science
+
|TransportTracer simulation
 +
|Simple
 
|
 
|
*Code has been implemented in the ancient v9-01-02 version. 
 
*Bringing this up to v11-02 might involve significant effort.
 
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
 
  
 
|-valign="top"
 
|-valign="top"
|Oxidant fields from v10 for 2006-2012
+
|Bug fix for GFAS in GCHP
*3D chemical source for CO2, CO
+
|Lizzie Lundgren (Harvard)
*OH for tagged CO & CH4
+
|GCHP
|Dylan Jones (UofT)
+
|Simple
|Science
+
 
|
 
|
*Will make data files available on ftp site
 
  
 
|-valign="top"
 
|-valign="top"
|Africa nested-grid for GEOS-FP and MERRA-2
+
|Use pointers to internal state for species arrays in GCHP/GEOS
|Eloise Marais (U. Birmingham)
+
|Lizzie Lundgren (Harvard)
|Science
+
|GCHP/GEOS
 +
|Medium
 
|
 
|
*Delivered to GCST (Dec 2017)
 
  
 
|-valign="top"
 
|-valign="top"
|West Africa nested-grid for GEOS-FP
+
|[https://github.com/geoschem/geos-chem/issues/1274 Revision to a rate constant for the C2H4 scheme]
|Mat Evans (York)<br>Eleanor Morris (York)
+
|Kelvin Bates (Harvard)
|Science
+
|Chemistry
 +
|Easy
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate simulation]]
+
|[https://github.com/geoschem/geos-chem/issues/1298 Fix product in HOBr/Cl + S(IV) reactions]
|Becky Alexander (UW)
+
|Xuan Wang (CUHK)
|Science
+
|Chemistry
 +
|Easy
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Arsenic simulation
+
|[https://github.com/geoschem/geos-chem/issues/1235 Add MO2 + NO3 reaction]
|Shiliang Wu (MT)
+
|Kelvin Bates (Harvard)
|Science
+
|Chemistry
 +
|Easy
 
|
 
|
  
|-
+
|}
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
  
|-valign="top"
+
== Delivered and in the queue ==
|Updated flux diagnostics
+
 
|Chris Holmes (Florida State)<br>[[GCST]]
+
Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.
|Structural/<br>Benchmarking
+
 
|
+
{| border=1 cellspacing=0 cellpadding=5
*Work has not yet begun
+
|-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"
|Benchmark of stratospheric simulation
+
|[https://doi.org/10.34894/SZ2KOI AMAP 2015 emissions from GMA2018]
|Dylan Jones (U. Toronto)
+
|Helene Angot(MIT)<br>Ari Feinberg (MIT)<br>Noelle Selin (MIT)
|Benchmarking
+
|Hg simulation
 +
|Simple
 
|
 
|
*1-yr benchmarks for GEOS-Chem v11-01d and later include comparisons with OSIRIS O3
+
* Delivered to GCST (Jul 2022)
*Waiting on OSIRIS NO2 data
+
*Waiting on comparisons with ACE-FTS data
+
  
 
|-valign="top"
 
|-valign="top"
|Add total column O3 to benchmarks
+
|[https://pubs.rsc.org/en/content/articlehtml/2022/em/d2em00032f Improvements in modelled Hg0 dry deposition to land]
|Chris Holmes (FSU)<br>[[GCST]]
+
|Ari Feinberg (MIT)<br>Noelle Selin (MIT)<br>Thandolwethu Dlamini (MIT)<br>Martin Jiskra (UBasel)<br>Viral Shah (Harvard)
|Benchmarking
+
|Hg simulation
 +
|Simple
 
|
 
|
*Deferred until v11-03
+
* See [https://github.com/geoschem/geos-chem/pull/1367 geoschem/geos-chem PR #1367]
*Also note: GCST plans on migrating benchmark plotting code from IDL to Python in v11-03
+
* The study is already published and could be incorporated into the standard model as a default. Some tweaking to the reduction rate may be required as the model halogen oxidation has also been updated in v13.4.
  
 
|-valign="top"
 
|-valign="top"
|ObsPack diagnostic as netCDF replacement for planeflight_mod.F
+
|[https://github.com/geoschem/geos-chem/issues/1301 HTAPv3 at 0.1 deg]
|Andy Jacobson (NOAA/ESRL)
+
|Dandan Zhang (WashU)
|Structural
+
|Emissions
 +
|Simple
 
|
 
|
*Delivered to GCST (May 2017)
+
*Delivered to GCST (Jul 2022)
 +
 
 +
|}
 +
 
 +
== Delivered but not yet prioritized ==
 +
 
 +
Features listed in this table have been delivered to the GEOS-Chem Support Team but 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"|Ease of implementation
 +
!width="300px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|Updates to eliminate differences between single and multi-segmented GEOS-Chem runs
+
|Tagged O3 simulation in GCHP
|[[GCST]]<br>Christoph Keller
+
|Xingpei Yu (PKU)<br>Jourdan He (WashU)
|Bug fix<br>Structural
+
|TagO3 simulation
 +
|Simple
 
|
 
|
 +
*[https://github.com/geoschem/geos-chem/pull/1167 geoschem/geos-chem PR #1167]
 +
* Needs to be updated to a more recent version of GCHP
  
 
|-valign="top"
 
|-valign="top"
|Further structural updates to facilitate interfacing GEOS-Chem with external models (e.g. CAM, CESM)
+
|[https://doi.org/10.7910/DVN/23BRII Global continental chlorine (pCl and HCl) emissions]
|[[GCST]]
+
|Bingqing Zhang (Georgia Tech)<br>Pengfei Liu (Georgia Tech)
|Structural
+
|Emissions
 +
|Simple
 
|
 
|
*Ongoing
+
*Delivered to GCST (Jul 2022)
 
+
|-
+
!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]]
+
|[https://github.com/geoschem/geos-chem/pull/629 Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange]
|Jiawei Zhuang (Harvard)<br>Jintai Lin (PKU)
+
|Joey Lam(CUHK)<br>Amos Tai (CUHK)
|Structural
+
|Science
 +
|Simple
 
|
 
|
*Delivered to GCST (Oct 2016)
+
*Delivered to GCST (Feb 2021)
*Waiting for a stable v11-02 release before proceeding
+
* [https://github.com/geoschem/geos-chem/pull/629 geoschem/geos-chem #629]
*FlexGrid will facilitate adding new nested-grids
+
  
 
|-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]]
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
|Seb Eastham (Harvard)
+
|Yang Li (Baylor University)<br>Loretta Mickley (Harvard)
|Science
+
|Emissions
 +
|Simple
 
|
 
|
*Delivered to GCST (May 2017)
+
*Data files delivered to GCST (July 2021)
 +
*Data are quite large - need to think about storage, compression
  
 
|-valign="top"
 
|-valign="top"
|Archival of roughness length for temperature z0T
+
|[https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2006GL026015 Stratospheric HCN chemistry]
|[[GCST]]
+
|Armin Kleinbohl (JPL)<br>Debra Weisenstein (Harvard, retired)
|Met processing
+
|Chemistry
 +
|Medium
 
|
 
|
*Work has not yet begun
+
*Delivered to GCST (Jun 2020)
 +
 
 
|}
 
|}
  
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 19:53, 23 May 2018 (UTC)
+
== Ready but not delivered ==
  
=== Almost there (< 6 months) ===
+
Features listed in this table are ready but have not been delivered to the GEOS-Chem Support Team.
  
{| border=1 cellspacing=0 cellpadding=5
+
{| border=1 cellspacing=0 cellpadding=5  
|- bgcolor="#cccccc"
+
|-bgcolor="#CCCCCC"
!width="400px"|Item
+
!width="200px"|Feature
!width="250px"|Author(s)
+
!width="200px"|Contributor(s)
!width="100px"|Type
+
!width="100px"|Model scope
!width="300px"|Status
+
!width="300px"|Notes and References
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
|Updating VOC fire emissions and adding lumped furan
 +
|Colette Heald (MIT)<br>Jessica Haskins (MIT)
 +
|Chemistry
 +
|
 +
* Carter, T. S., Heald, C. L., Kroll, J. H., Apel, E. C., Blake, D., Coggon, M., Edtbauer, A., Gkatzelis, G., Hornbrook, R. S., Peischl, J., Pfannerstill, E. Y., Piel, F., Reijrink, N. G., Ringsdorf, A., Warneke, C., Williams, J., Wisthaler, A., and Xu, L.: An Improved Representation of Fire Non-Methane Organic Gases (NMOGs) in Models: Emissions to Reactivity, Atmos. Chem. Phys. Discuss. [preprint], https://doi.org/10.5194/acp-2022-438, in review, 2022.
  
 
|-valign="top"
 
|-valign="top"
|[https://www.geosci-model-dev-discuss.net/gmd-2017-125/ GEOS resolution & subgrid convection]
+
|Nitrate photolysis
|Karen Yu (Harvard)
+
|Viral Shah (NASA GMAO)
|Science
+
|Chemistry
 
|
 
|
*To be installed by Bob Yantosca (Harvard), tested by Tailong He (Toronto)
+
* Shah, V., D.J. Jacob, R. Dang, L.N. Lamsal, S.A. Strode, S.D. Steenrod, K.F. Boersma, S.D. Eastham, T.M. Fritz, C. Thompson, J. Peischl, I. Bourgeois, I.B. Pollack, B.A. Nault, R.C. Cohen, P. Campuzano-Jost, J.L. Jimenez, S.T. Andersen, L.J. Carpenter, T. Sherwen, and M.J. Evans, Nitrogen oxides in the free troposphere: Implications for tropospheric oxidants and the interpretation of satellite NO2 measurements, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2022-656, 2022.
*Work to begin after v11-02 release
+
 
+
|-
+
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
+
  
 
|-valign="top"
 
|-valign="top"
|N2O5 hydrolysis updates
+
|Online H2 chemistry
|Viral Shah (UW)
+
|Maria Paula Pérez-Peña (UNSW)<br>Jenny Fisher (UOW)<br>Dylan Millet (UMN)
|Science
+
|Chemistry
 
|
 
|
*Defer until paper is submitted (Summer 2018)
 
*Code from v10 (SMVGEAR) needs to be translated to v11 (FlexChem); this may take some effort
 
  
 
|-valign="top"
 
|-valign="top"
|H2 chemistry in UCX
+
|Alk4 & R4N2 chemistry
|Chris Holmes (FSU)
+
|Jared Brewer (Harvard)
|Science
+
|Chemistry
 
|
 
|
*Defer until paper is submitted
+
* Brewer, J.F., D.J. Jacob, S.H. Jathar, Y. He, A. Akherati, S. Zhai, D.S. Jo, A. Hodzic, B.A. Nault, P. Campuzano-Jost, J.L. Jimenez, R.J. Park, Y.J. Oak, and H. Liao, A scheme for representing aromatic secondary organic aerosols in chemical transport models: application to source attribution of organic aerosols over South Korea during the KORUS-AQ campaign, submitted to J. Geophys. Res., 2022.
*Estimate Fall 2018 or sooner
+
  
 
|-valign="top"
 
|-valign="top"
|Updated chlorine chemistry
+
|Organic acids (RCOOH)
|Xuan Wang (Harvard)
+
|Katie Travis (NASA)
|Science
+
|Chemistry
 
|
 
|
*Defer until the paper is submitted
 
  
 
|-valign="top"
 
|-valign="top"
|[[Chemistry_Issues#Correcting_ozone_from_the_height_of_the_lowest_model_level_to_the_surface|ND49 timeseries diagnostic for correcting ozone from the height of the lowest model level to 10m]]
+
|Update reactions with new JPL & IUPAC recommendations
|Katie Travis (MIT)
+
|Kelvin Bates (Harvard)
|Structural
+
|Chemistry
 
|
 
|
*Defer until the paper is submitted
+
* Currently running simulations to check magnitude of changes
  
 
|-valign="top"
 
|-valign="top"
|OH + NO2 rate update
+
|Improve carbon & nitrogen conservation in reactions
|Barron Henderson (EPA)
+
|Kelvin Bates (Harvard)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Aromatics and dicarbonyl chemistry
+
|Blowing snow sea salt in TOMAS
|William Porter (MIT)<br>Tzung-May Fu (PKU)
+
|Betty Croft (Dalhousie)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Document chemical mechanism in KPP file
+
|Geologic emission of ethane and propane
|Mat Evans (York)
+
|Matthew Rowlinson and Mat Evans(York)
|Structural
+
|Emissions
 
|
 
|
 +
* 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"
|Diurnal variability for NH3
+
|New version of CEDS at 0.1 deg
|Henze group
+
|Emma Knowland (NASA)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Uptake of HNO3 onto coarse-mode sea salt
+
|[https://github.com/geoschem/geos-chem/issues/550 MEIC (China regional) for 2000-2017 at 0.5x0.625 deg]
|Prasad Kasibhatla (Duke)
+
|Shixian Zhai (Harvard)
|Science
+
|Emissions
 
|
 
|
 +
* Need permission from Qiang Zhang (Tsinghua U.) to distribute data
  
 
|-valign="top"
 
|-valign="top"
|Photolysis of NITs
+
|KORUS-AQ emissions for East Asia
|Prasad Kasibhatla (Duke)
+
|Katie Travis (NASA)
|Science
+
|Emissions
 
|
 
|
 +
* Need permission to distribute data
  
|-
+
|-valign-"top"
!colspan="4" bgcolor="#CCFFFF"|Emissions updates
+
|[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
 +
|
 +
 
 +
|-valign-"top"
 +
|WRF-GC Hg simulation
 +
|Xiaotian Xu (Nanjing U.)<br>Yanxu Zhang (Nanjing U.)
 +
|Hg simulation<br>WRF-GC
 +
|
  
 
|-valign="top"
 
|-valign="top"
|Grid-independent lightning NOx emissions (3-hourly)
+
|Updated HgII gas-partical partitioning
|Lee Murray (Rochester)
+
|Kaiyun Liu (Tsinghua U.)<br>Qingru Wu (Tsinghua U.)<br>Shuxiao Wang (Tsinghua U.)
|Science
+
|Hg simulation
 
|
 
|
*Data has not yet been transferred to GCST
+
* Should be option, not default
  
 
|-valign="top"
 
|-valign="top"
|Grid-independent dust emissions (hourly)
+
|Dry deposition to F90 (readability)
|David Ridley (MIT)
+
|Chris Holmes (FSU)
|Science
+
|Dry deposition
 
|
 
|
*Data has not yet been transferred to GCST
+
|}
 +
 
 +
== Almost there (< 6 months) ==
 +
 
 +
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
 +
 
 +
{|border=1 cellspacing=0 cellpadding=5
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes and References
 +
 
  
 
|-valign="top"
 
|-valign="top"
|Grid-independent biogenic emissions (hourly)
+
|DMS Chemistry
|Jintai Lin (PKU)
+
|Linia Tashmim (UC Riverside)<br>William Porter (UC Riverside)
|Science
+
|Chemistry
 
|
 
|
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
|Grid-independent sea salt emissions (hourly)
+
|PPN+hv, PPN+OH
|Jintai Lin (PKU)
+
|Robert Ryan (UCL)
|Science
+
|Chemistry
 
|
 
|
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
|EPA-derived BC/OA emissions over US (1990-2012)
+
|MBO
|David Ridley (MIT)<br>Chi Li (Dalhousie)
+
|Michael Vermeuel (UMN)
|Science
+
|Chemistry
 
|
 
|
*Emissions are available but need to be formatted properly.
 
*Could be ready by Fall-Winter 2018, depending on D. Ridley's availability
 
  
 
|-valign="top"
 
|-valign="top"
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
+
|[https://github.com/geoschem/geos-chem/issues/1094 Stratospheric adjustment with RRTMG in GEOS-Chem]
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
+
|Seb Eastham (MIT)
 
|Science
 
|Science
 
|
 
|
*MASAGE data is already available.
 
*GCST would need assistance from the user community to prepare HEMCO configuration files such that we do not double-count agricultural NH3 from MASAGE and other inventories.  This has been the main delay.
 
*F. Paulot has left the GEOS-Chem community.
 
  
 
|-valign="top"
 
|-valign="top"
|[[MASAGE_NH3_inventory#Non-agricultural_NH3_for_use_with_MASAGE|Non-agricultural NH3 for use with MASAGE]]
+
|Re-binning of off-line sea salt and dust for use in TOMAS
|Amos Tai (CUHK)
+
|Betty Croft (Dalhousie)
|Science
+
|Aerosols
 
|
 
|
*Waiting on data
 
  
 
|-valign="top"
 
|-valign="top"
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90
|Fabien Paulot (NOAA/GFDL)
+
|Betty Croft (Dalhousie)
|Science
+
|Aerosols
 
|
 
|
*Data files delivered to GCST (Jan 2016)
 
*Needs to be implemented via HEMCO, which is the primary delay
 
  
 
|-valign="top"
 
|-valign="top"
|Injection height for fire emissions
+
|ML algorithms for bulk aerosols
|Juliet Zhu (CSU)<br>Emily Fischer (CSU)
+
|Arshad Nair (SUNY Albany)<br>Fangqun Yu (SUNY Albany)
|Science
+
|Aerosols
 
|
 
|
  
|-
+
|-valign="top"
!colspan="4" bgcolor="#CCFFFF"|Surface fluxes and land usage updates
+
|PM2.5 and PM10 calculations: aerodynamic vs geometric diameters
 +
|Shixian Zhai (Harvard)
 +
|Aerosols
 +
|
  
 
|-valign="top"
 
|-valign="top"
|Carbon bottom up fluxes: anthro, ocean, land
+
|Updates to Hodzic SOA scheme
|Kevin Bowman (JPL)
+
|Jared Brewer (Harvard)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Land cover module: Harmonized biosphere-atmosphere exchange and implementing CLM or manual land cover change experiments
+
|Automated reduction in isoprene scheme
|Jeff Geddes (BU)
+
|Dan Westervelt (Lamont-Doherty)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Online O3-LAI coupling in GEOS-Chem
+
|Brown carbon chemsitry
|Amos Tai (CUHK)
+
|Jingqiu Mao (U. Alaska)<br>Xuan Wang (CUHK)
|Science
+
|Aerosols
 
|
 
|
  
|-
 
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
 
  
 
|-valign="top"
 
|-valign="top"
|Wet deposition parameterizations: pH dependency, Henry's law coefficients, etc.
+
|GEOS resolution and subgrid convection - Part 2 RAS parameter tuning
|Sarah Safieddine (MIT)<br>GCST
+
|Tailong He (Toronto)<br>Dylan Jones (Toronto)<br>Andrea Molod (NASA GMAO)
|Science
+
|Convection
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Wet scavenging in mixed-phase clouds
+
|Update surface methane boundary condition using NOAA flask data
|Bo Zhang (NIA/NASA Langley)
+
|Lee Murray (Rochester)
|Science
+
|Input data
 
|
 
|
*Defer until paper is published
 
*Estimate Fall 2018
 
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
 
  
 
|-valign="top"
 
|-valign="top"
|AMAP/UNEP 2035 for Hg simulation
+
|Provide recommended rather than hard-coded scaling factors for online emissions
|Helene Angot (MIT)
+
|Melissa Sulprizio (Harvard)
|Science
+
|Emissions
 
|
 
|
*Data is available, but has not been transferred to GCST yet
 
  
 
|-valign="top"
 
|-valign="top"
|Radon emission update
+
|High-res top-down TROPOMI-derived seasonal mean NOx emissions for China
|Bo Zhang (NIA/NASA Langley)
+
|Jintai Lin (PKU)
|Science
+
|Emissions
|
+
|Horizontal resolution: 5km, temporal resolution: JJA mean (monthly data will be available at a later stage; please contact us).
*Defer until paper is published
+
*Estimate Fall 2018
+
  
 
|-valign="top"
 
|-valign="top"
|[[POPs simulation#PCB simulation|PCB simulation]]
+
|Updated biomass burning emission factors and species
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
+
|Tess Carter (MIT)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|New EDGAR sectoral inventory for Hg (1970-2012)
+
|Updated offline sea salt emissions
|Amanda Giang (MIT)
+
|Hongjian Weng (PKU) <br> Jintai Lin (PKU)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Archive GISS met fields from RCP scenarios for community
+
|HgII deposition too high in 13.4; Hg0 conc too low; should not use as is
|Lee Murray (Rochester)
+
|Viral Shah (NASA GMAO)<br>Yanxu Zhang (Nanjing U.)<br>Ari Feinberg (MIT)
|Science
+
|Hg simulation
 
|
 
|
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Structural updates
 
  
 
|-valign="top"
 
|-valign="top"
|Clean up SOA diagnostics
+
|[https://gmd.copernicus.org/articles/13/2569/2020/ Canopy Physics Model]
|GCST
+
|Sam Silva (MIT)
|Structural
+
|Emissions &<br>Science
 
|
 
|
*GCST has implemented many existing SOA diagnostics in netCDF
+
*DOI: [https://zenodo.org/record/3614062#.XzvrH5NKjOR 10.5281/zenodo.3614062]
*GCST would need help from the community to streamline these diagnostics
+
*Needs to be updated to a more recent GEOS-Chem version
  
 
|-valign="top"
 
|-valign="top"
|Calculation consistency throughout code: surface area, HGF (via species database)
+
|Gridded EPA (GEPA) version 2 emissions for 2012-2018
|GCST
+
|Bram Maasakkers (SRON)<br>Erin McDuffie (WashU),<br>Melissa Sulprizio (Harvard)
|Structural
+
|Emissions<br>CH4 simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Harmonizing Henry's Law coefficients across wet and dry deposition
+
|Reduce dimension of analytical inversion
|[[GCST]]
+
|Hannah Nesser (Harvard)
|Science
+
|Adjoint capability
 
|
 
|
*Work not started yet. Will need input from the community.
 
 
|-
 
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
 
  
 
|-valign="top"
 
|-valign="top"
|CESM-GC offline coupling in standard model + benchmark
+
|Retire all BPCH diagnostics
|Rokjin Park (SNU)<br>Daniel Rothenberg (MIT)
+
|Bob Yantosca (Harvard)
|Science
+
|Diagnostics
 
|
 
|
*Dan Rothenberg is no longer working on GEOS-Chem
 
*Seb Eastham is already working on CESM-GCHP interface
 
 
|}
 
 
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 19:16, 23 May 2018 (UTC)
 
 
=== Over the horizon (6-12 months) ===
 
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
!width="400px"|Item
 
!width="250px"|Author(s)
 
!width="100px"|Type
 
!width="300px"|Status
 
  
 
|-valign="top"
 
|-valign="top"
|[http://www.atmos-chem-phys.net/16/2819/2016/ A snow NOx source from deep snowpack]
+
|GEOS-Chem in CESM 2.3
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
|Lizzie Lundgren (Harvard)
|Science
+
|Interfacing with ESMs
 
|
 
|
*Delivered to GCST (Nov 2017)
 
*Needs to be added as a HEMCO extension, but converting from ancient v9-01-01 code may take significant effort.
 
  
 
|-valign="top"
 
|-valign="top"
|MEIC emissions over China (2000-2015)
+
|Assess memory leak in GCHP
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
+
|Killian Murphy (York)
|Science
+
|Model performance
 
|
 
|
*Defer until MEIC paper is published
 
  
 
|-valign="top"
 
|-valign="top"
|GISS-GC (ICECAP/GCAP2) in standard model + benchmark
+
|Point to internal state for species mixing ratios in GCHP and GEOS
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
+
|Lizzie Lundgren (Harvard)<br>Christoph Keller (NASA)
|Science
+
|Structural
|Lee Murray replied:
+
|
*"I would say 6-12 months to be safe, but the goal is to have it done by the end of summer 2018.  There will actually be very minimal updates to GEOS-Chem; most of the updates are to modify the GISS model to output MERRA2-like data, to facilitate integration with GCHP and future updates to the CTM."
+
  
 
|-valign="top"
 
|-valign="top"
|GISS-GC GCHP
+
|Assess precision in GCHP internal state - use R4 for some?
|Lee Murray (Rochester)<br>Pengfei Liu (Harvard)<br>Yang Li (Harvard)
+
|Lizzie Lundgren (Harvard)
|Science
+
|Structural
 
|
 
|
*Rochester and Harvard groups are coordinating, to avoid duplication of effort
 
  
 
|-valign="top"
 
|-valign="top"
|CESM-GC GCHP
+
|Hybrid MPI-OpenMP in GCHP
|Seb Eastham (MIT)
+
|Seb Eastham (MIT)<br>Killian Murphy (York)
|Science
+
|Model performance
 
|
 
|
*Seb Eastham is now the lead developer.
 
*Estimate late 2018 or early 2019; validation will take time
 
  
 
|-valign="top"
 
|-valign="top"
|Additional modifications for [[FlexChem]], including:
+
|Convert HEMCO input files to YAML
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Melissa Sulprizio (Harvard)
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|[[GCST]]
+
 
|Structural
 
|Structural
 
|
 
|
*Mike Long, who was the principal proponent behind these updates, has since left the GC community.
 
*We are not sure who will take this over
 
  
 
|-valign="top"
 
|-valign="top"
|Dynamic fire modeling/prediction
+
|Allow easy disabling of HEMCO emissions for testing
|Shiliang Wu (MNT)
+
|Melissa Sulprizio (Harvard)
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Interannually varying ocean model BCs for Hg from ocean model
+
|Improve run directory templating and creation with init_rd.sh and shared directories
|Colin Thackray (Harvard)
+
|Jourdan He (WashU)
|Science
+
|Run directories
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|PAH & PFCA simulations
+
|Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc
|Peter Ivatt (York)<br>Mat Evans (York)<br>Noelle Selin (MIT)<br>Colin Thackray (Harvard)
+
|GCST?
|Science
+
|Documentation
 +
|
 +
 
 +
|-valign="top"<
 +
|Upgrade Fast-JX to Cloud-J
 +
|Lizzie Lundgren (Harvard)
 +
|Structural
 
|
 
|
 +
 +
|}
 +
 +
== 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
 +
|- bgcolor="#cccccc"
 +
!width="200px"|Feature
 +
!width="200px"|Contributor(s)
 +
!width="100px"|Model scope
 +
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
|CH4 in full chemistry simulation
+
|Snow / Icy Bromine
|Seb Eastham (Harvard)
+
|Becky Alexander (UW)<br>William Swanson (U. Alaska)<br>Shuting Zhai (UW)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Standard future land use maps (PFT, LAI) for RCP/CMIP6 simulations
+
|Monoterpene oxidation scheme
|Colette Heald (MIT)<br>Loretta Mickley (Harvard)
+
|Jessica Haskins (MIT)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Archive GISS met fields from CMIP6 scenarios for community
+
|Fire related VOCs including furans
|Lee Murray (Rochester)
+
|Lu Hu (UMT)<br>Lixu Jin (UMT)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updates to cold-temperature deposition
+
|Extension of UCX into the mesosphere
|Lyatt Jaegle (UW)
+
|Seb Eastham (MIT)<br>Eric Fleming (NASA)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Simple parameterization for CO2-O3 dependence of stomatal resistance
+
|Methane flux ingestion
|Amos Tai (CUHK)
+
|Eloise Marais (UCL)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|NH3 emissions over China
+
|Parameterized effective radius
|Lin Zhang (PKU)
+
|Haihui Zhu (WashU)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Using GEOS-Chem within GEOS-5
+
|Dust non-sphericity impacts on surface chem and optical properties
|Loretta Mickley (Harvard)
+
|Inderjeet Singh (WashU)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
+
|Size-resolved stratospheric aerosol
|Beata Bukosa (Wollongong)<br>Dylan Jones (UofT)
+
|Seb Eastham (MIT)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Seasonal EMEP emissions back to 1980
+
|Extend aerosol settling
|Mat Evans (York)
+
|Eloise Marais (UCL)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updates to NO2 dry deposition
+
|Stratospheric aerosol APM
|Brian Boys (Dalhousie)
+
|Fangqun Yu (SUNY)
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|APM update and integration with most recent GEOS-Chem version
+
|Plume-in-grid model
|Gan Luo (SUNY Albany)
+
|Hongwei Sun (Harvard)
|Structural
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Cosmogenic tracer production
+
|Updated lightning NOx: Prescribe from ground and geostationary lightning flashes
 
|Lee Murray (Rochester)
 
|Lee Murray (Rochester)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Explore resolution-consistent dust emissions
+
|Seb aircraft emissions beyond recent 2019 update
*Make high-res concentrations or mass fluxes available offline, implement in met field processing
+
|Seb Eastham (MIT)
|David Ridley (MIT)<br>GCST<br>Nested Model WG
+
|Emissions
|Science
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Dust emissions at nested-grid resolutions
+
|FRP-based fire emsisions for eastern US at 0.2 deg
|Yuxuan Wang (U. Houston)<br>Jun Wang (U. Iowa)
+
|Charlie Fite (FSU)
|Science
+
|Emissions
 
|
 
|
*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]]
+
|Hg iodine chemistry
|Duncan Fairlie (NASA/LARC)  
+
|Yiming Fu<br>Yanxu Zhang (Nanjing U.)
|Science
+
|Hg simulation
 
|
 
|
  
|}
+
|-valign="top"
 
+
|Hg simulation in GCHP
=== Longer term (12-24 months)===
+
|Ari Feinberg (MIT)<br>Lyssa Freese (MIT)
 
+
|Hg simulation
{| border=1 cellspacing=0 cellpadding=5
+
|
|- bgcolor="#cccccc"
+
!width="400px"|Item
+
!width="250px"|Author(s)
+
!width="100px"|Type
+
!width="300px"|Status
+
  
 
|-valign="top"
 
|-valign="top"
|GCHP stretched grid
+
|Update Hg ocean and soil boundary conditions for consistency with new chemistry
|Jiawei Zhuang (Harvard)
+
|Yanxu Zhang (Nanjing U.)
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|1/8 degree nested-grid simulations with GEOS-FP
+
|Dry deposition diagnostics by land cover
|Nested Model WG
+
|Holly Nowell (FSU)
|Science
+
|Diagnostics
 
|
 
|
*Wait for more interest
 
  
 
|-valign="top"
 
|-valign="top"
|Embedding GEOS-Chem into CESM
+
|Dry deposition process diagnostics
|Jean-Francois Lamarque (NCAR)
+
|Holly Nowell (FSU)
|Science
+
|Diagnostics
 
|
 
|
*NOTE: Seb Eastham is already working on this
 
  
 
|-valign="top"
 
|-valign="top"
|Adjoint of carbon cycle simulation in GCHP
+
|Isotope simulation for CO and CH4 in GCHP
|Kevin Bowman (JPL)
+
|Lee Murray (Rochester)
|Science
+
|Carbon simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Isoprene chemistry v2 (new Caltech update)
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
|Kelvin Bates (Caltech)
+
|Melissa Sulprizio (Harvard)<br>Tia Scarpelli (U. Edinburgh)<br>Zichong Chen (Harvard)
|Science
+
|Emissions<br>CH4 simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Contemporary land cover: developing historical and updated GEOS-Chem land cover maps based on satellite remote sensing
+
|Separate mixing and emissions
|Jeff Geddes (BU)
+
|Bob Yantosca (Harvard)
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Farquhar-Ball-Barry model to calculate stomatal resistance
+
|Modularization of aerosols code for interface with GOCART in GEOS
|Amos Tai (CUHK)<br>Jeff Geddes (BU)
+
|Christoph Keller (GMAO)
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Impacts of chemistry on ecosystem/carbon cycle
+
|Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism
|Kevin Bowman (JPL)<br>Anthony Bloom (JPL)
+
|Bob Yantosca (Harvard)
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Improved lightning emission scheme
+
|Improve load balancing in GCHP
|Lee Murray (Rochester)
+
|Seb Eastham (MIT)
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Resolution-independent lightning NOx
+
|Update to MAPL 3 in GCHP, including replacement of ExtData.rc with YAML file
|Lee Murray (Rochester)
+
|Lizzie Lundgren (Harvard)
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Bidirectional NH3 emissions
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
|Juliet Zhu (CSU)
+
|Bob Yantosca (Harvard)
|Science
+
|Model performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Country-based weekday/weekend variability for EDGAR 4.2
+
|Limit allocation of State_Met to what is needed per simulation
|Lee Murray (Rochester)<br>Christoph Keller (Harvard)
+
|Melissa Sulprizio (Harvard)
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Update keytone photolysis
+
|Make frequency of HEMCO restart file configurable
|Jared Brewer (CSU)<br>Emily Fischer (CSU)
+
|Melissa Sulprizio (Harvard)
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Small alkyl nitrates
+
|Apply masks/scaling in HEMCO based on input category or flag
|Jenny Fisher (Wollongong)
+
|Melissa Sulprizio (Harvard)
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|YIBS-GC chemistry-biosphere-fire coupling
+
|Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer
|Loretta Mickley (Harvard)<br>Xu Yue (IAP)
+
|Bo Zhang (NIA)<br>Hongyu Liu (NIA / NASA Langley)
|Science
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Nitrogen-LAI coupling
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
|Lin Zhang (PKU)<br>Amos Tai (CUHK)
+
|Gan Luo (SUNY Albany)<br>Fangqun Yu (SUNY-Albany)
|Science
+
|Transport
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Implementing humidity/VPD dependence of dry deposition
+
|Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons
|Jennifer Murphy (U. Toronto)
+
|Seb Eastham (MIT)<br>Clara Orbe (NASA GISS)<br>Andrew Schuh (CSU)
|Science
+
|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"
|SO2 wet scavenging
+
|[https://github.com/geoschem/geos-chem/issues/1288 New soil NOx parameterization]
|Duncan Fairlie (NASA Langley)
+
|Yi Wang (U. Iowa)<br>Jun Wang (U. Iowa)
|Science
+
|Emissions
 
|
 
|
 +
*See [https://github.com/geoschem/geos-chem/issues/1288 geoschem/geos-chem #1288]
 +
*[https://github.com/geoschem/geos-chem/issues/1288#issuecomment-1255103962 NOTE: This feature has been tabled for the time being.]
  
 
|-valign="top"
 
|-valign="top"
|Heterogeneous sulfate production
+
|Updates to Aromatic chemistry
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Stephen MacFarlane (UOW)<br>Jenny Fisher (UOW)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|MOSAIC implementation
+
|Nitrate photolysis
|Sebastian Eastham (Harvard)
+
|Mat Evans (York)<br>Thomas Sherwen (York)<br>Matthew Rowlinson (York)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Particle size climatology
+
|In aerosol chemistry Halogens
|Fangqun Yu (SUNY Albany)
+
|Mat Evans (York)<br>Hansen Cao (CU Boulder)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Sea salt/dust size distribution
+
|Benchmark box model of GC Chemistry
|David Ridley (MIT)<br>Colette Heald (MIT)
+
|Katie Travis (NASA)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Updates to GTMM
+
|Alkyl nitrates Alk7, PHAN
|Rebecca Stern (Harvard)
+
|Katie Travis (NASA)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Tracer transport ocean
+
|Add stratospheric ozone species to full-chemistry simulations
|Chris Holmes (FSU)
+
|Lee Murray (Rochester)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Include Hg in full chemistry simulation
+
|Perchlorate chemistry
|Noelle Selin (MIT)
+
|Yuk Chun Chan (UWAB)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Goddard seasonal weather prediction in GCHP
+
|Explicit heterogeneous sulfate chemistry
|Kevin Bowman (JPL)
+
|Katie Travis (NASA)<br>Becky Alexander (UT)
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Climate index diagnostics (drought, etc.)
+
|ISORROPIA-lite
|Chemistry-ecosystems-climate WG
+
|Becky Alexander (UW)
|Structural
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Joint CO/CO2/CH4 simulation
+
|HOx and ozone "emissions" from lightning as option in model to play with
|Nicholas Deutscher (U. Wollongong)
+
|Jingqiu (Alaska)<br>Lee Murray (Rochester)
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Carbon coupling: oceans and terrestrial models
+
|Sea salt aerosol from sea ice leads
|Chris Holmes (FSU)
+
|Hannah Horowitz (U. Illinois)
|Science
+
|Emissions
 
|
 
|
*Ocim-pure physical transport, ECCO-Darwin ocean biogeochemistry
 
  
 
|-valign="top"
 
|-valign="top"
|DMS oxidation scheme updating
+
|Drought-stress algorithm
|Qianjie Chen (UW)<br>Chemistry WG
+
|Wei Li (U. Houston)
|Science
+
|
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Limiting NH3 uptake due to OA
+
|Biomass burning injection height profiles
|Rachel Silvern (Harvard)
+
|Inderjeet Singh (WashU)
|Science
+
|Emissions
 
|
 
|
 
|}
 
 
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 15:32, 23 May 2018 (UTC)
 
 
=== Currently not prioritized ===
 
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
!width="400px"|Item
 
!width="250px"|Author(s)
 
!width="100px"|Type
 
!width="300px"|Status
 
 
  
 
|-valign="top"
 
|-valign="top"
|[[GEOS-Chem_species_units|Uniformity of units]]
+
|OCIM integration
|[[GCST]]
+
|Chris Holmes (FSU)<br>Lee Murray (Rochester)
|Structural
+
|
 
|
 
|
Lizzie Lundgren wrote:
 
*We are not planning on resuming work to unify units in GEOS-Chem anytime soon. Any changes to units in the near future would be for better compatibility with other models, although none are currently planned. However, user consensus on preferred units would still be helpful to move the conversation forward.
 
  
 
|-valign="top"
 
|-valign="top"
|Sea salt emission from sea ice
+
|Updating landcover products in GEOS-Chem
|Jiayue Huang (UW)
+
|Chris Holmes (FSU)<br>Jeff Geddes (BU)
|Science
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|Re-evaluation of SST dependence of sea salt emissions
+
|Dry deposition physical improvement
|Jiayue Huang (UW)
+
|Chris Holmes (FSU)
|Science
+
|Dry deposition
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Discussion_of_LAI_Data_Sources|Update MODIS LAI fields through 2015]]
+
|Extend the IMI system to other trace gases
|Barron Henderson (UF)
+
|Lucas Estrada (Harvard)
|Science
+
|Adjoint capabilities
 
|
 
|
 +
  
 
|-valign="top"
 
|-valign="top"
|Lightning NOx chemistry parameterization
+
|TOMAS WRF-GC in regional Thailand simulation
|Alicia Gressent (MIT)
+
|Win Trivitayanurak (Chulalongkorn U)
|Science
+
|Aerosols
 
|
 
|
  
 
|}
 
|}
  
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 20:54, 23 May 2018 (UTC)
+
----------------
 +
 
 +
'''''[[Main_Page|GEOS-Chem Main Page]] | [[GCHP_Main_Page|GCHP Main Page]]'''''

Revision as of 18:24, 22 September 2022

GEOS-Chem Main Page | GCHP Main Page

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.

Release schedule

Please see the GEOS-Chem Release Proposal outlining the procedure and schedule for releasing GEOS-Chem versions.

Merged and awaiting release

See the links below for items merged and awaiting release.

Patch version in development Major version in development
- GEOS-Chem 14.0.0

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


TOMAS in GCHP Betty Croft (WashU) Aerosols Simple
Adaptive chemical solver (as option) / KPP 3.0.0 Mike Long (Harvard)
Haipeng Lin (Harvard)
Bob Yantosca (GCST)
Lu Shen (PKU)
Chemistry Complicated
  • Lin, H., M.S. Long, R. Sander, R.M. Yantosca, L.A. Estrada, L. Shen, and D.J. Jacob, An adaptive auto-reduction solver for speeding up integration of chemical kinetics in atmospheric chemistry models: implementation and evaluation in the Kinetic Pre-Processor (KPP) version 3.0.0, submitted to JAMES, https://doi.org/10.31223/X5505V, 2022.
Joint CO2-CO-CH4-OCS simulation via KPP Beata Bukosa (NIWA)
Kevin Bowman (JPL)
Mike Long (Harvard)
Specialty simulation Medium
RO2 diagnostic Melissa Sulprizio (Harvard) Diagnostics Simple
Output satellite diagnostics as NetCDF Eloise Marais (UCL) Diagnostics Simple
Provide climatologies for open fire emissions Melissa Sulprizio (Harvard) Emissions Simple
Climatologies for lightning NOx Lee Murray (Rochester) Emissions Simple
Add new species concentration diagnostic in units of molec/cm3 Haipeng Lin (Harvard) Diagnostics Simple
Identify and remove memory leaks and similar issues Bob Yantosca (Harvard) Structural Medium
Update transport tracer simulation for consistency with the tracer gridded component in GEOS Melissa Sulprizio (Harvard) TransportTracer simulation Simple
Bug fix for GFAS in GCHP Lizzie Lundgren (Harvard) GCHP Simple
Use pointers to internal state for species arrays in GCHP/GEOS Lizzie Lundgren (Harvard) GCHP/GEOS Medium
Revision to a rate constant for the C2H4 scheme Kelvin Bates (Harvard) Chemistry Easy
Fix product in HOBr/Cl + S(IV) reactions Xuan Wang (CUHK) Chemistry Easy
Add MO2 + NO3 reaction Kelvin Bates (Harvard) Chemistry Easy

Delivered and in the queue

Features listed in this table have been delivered to the GEOS-Chem Support Team and are prioritized to be integrated into GEOS-Chem in the near future.

Feature Contributor(s) Model scope Ease of implementation Notes and References
AMAP 2015 emissions from GMA2018 Helene Angot(MIT)
Ari Feinberg (MIT)
Noelle Selin (MIT)
Hg simulation Simple
  • Delivered to GCST (Jul 2022)
Improvements in modelled Hg0 dry deposition to land Ari Feinberg (MIT)
Noelle Selin (MIT)
Thandolwethu Dlamini (MIT)
Martin Jiskra (UBasel)
Viral Shah (Harvard)
Hg simulation Simple
  • See geoschem/geos-chem PR #1367
  • The study is already published and could be incorporated into the standard model as a default. Some tweaking to the reduction rate may be required as the model halogen oxidation has also been updated in v13.4.
HTAPv3 at 0.1 deg Dandan Zhang (WashU) Emissions Simple
  • Delivered to GCST (Jul 2022)

Delivered but not yet prioritized

Features listed in this table have been delivered to the GEOS-Chem Support Team but are not yet prioritized for integration into GEOS-Chem.

Feature Contributor(s) Model scope Ease of implementation Notes and References
Tagged O3 simulation in GCHP Xingpei Yu (PKU)
Jourdan He (WashU)
TagO3 simulation Simple
Global continental chlorine (pCl and HCl) emissions Bingqing Zhang (Georgia Tech)
Pengfei Liu (Georgia Tech)
Emissions Simple
  • Delivered to GCST (Jul 2022)
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam(CUHK)
Amos Tai (CUHK)
Science Simple
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor University)
Loretta Mickley (Harvard)
Emissions Simple
  • Data files delivered to GCST (July 2021)
  • Data are quite large - need to think about storage, compression
Stratospheric HCN chemistry Armin Kleinbohl (JPL)
Debra Weisenstein (Harvard, retired)
Chemistry Medium
  • Delivered to GCST (Jun 2020)

Ready but not delivered

Features listed in this table are ready but have not been delivered to the GEOS-Chem Support Team.

Feature Contributor(s) Model scope Notes and References
Updating VOC fire emissions and adding lumped furan Colette Heald (MIT)
Jessica Haskins (MIT)
Chemistry
  • Carter, T. S., Heald, C. L., Kroll, J. H., Apel, E. C., Blake, D., Coggon, M., Edtbauer, A., Gkatzelis, G., Hornbrook, R. S., Peischl, J., Pfannerstill, E. Y., Piel, F., Reijrink, N. G., Ringsdorf, A., Warneke, C., Williams, J., Wisthaler, A., and Xu, L.: An Improved Representation of Fire Non-Methane Organic Gases (NMOGs) in Models: Emissions to Reactivity, Atmos. Chem. Phys. Discuss. [preprint], https://doi.org/10.5194/acp-2022-438, in review, 2022.
Nitrate photolysis Viral Shah (NASA GMAO) Chemistry
  • Shah, V., D.J. Jacob, R. Dang, L.N. Lamsal, S.A. Strode, S.D. Steenrod, K.F. Boersma, S.D. Eastham, T.M. Fritz, C. Thompson, J. Peischl, I. Bourgeois, I.B. Pollack, B.A. Nault, R.C. Cohen, P. Campuzano-Jost, J.L. Jimenez, S.T. Andersen, L.J. Carpenter, T. Sherwen, and M.J. Evans, Nitrogen oxides in the free troposphere: Implications for tropospheric oxidants and the interpretation of satellite NO2 measurements, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2022-656, 2022.
Online H2 chemistry Maria Paula Pérez-Peña (UNSW)
Jenny Fisher (UOW)
Dylan Millet (UMN)
Chemistry
Alk4 & R4N2 chemistry Jared Brewer (Harvard) Chemistry
  • Brewer, J.F., D.J. Jacob, S.H. Jathar, Y. He, A. Akherati, S. Zhai, D.S. Jo, A. Hodzic, B.A. Nault, P. Campuzano-Jost, J.L. Jimenez, R.J. Park, Y.J. Oak, and H. Liao, A scheme for representing aromatic secondary organic aerosols in chemical transport models: application to source attribution of organic aerosols over South Korea during the KORUS-AQ campaign, submitted to J. Geophys. Res., 2022.
Organic acids (RCOOH) Katie Travis (NASA) Chemistry
Update reactions with new JPL & IUPAC recommendations Kelvin Bates (Harvard) Chemistry
  • Currently running simulations to check magnitude of changes
Improve carbon & nitrogen conservation in reactions Kelvin Bates (Harvard) Chemistry
Blowing snow sea salt in TOMAS Betty Croft (Dalhousie) Aerosols
Geologic emission of ethane and propane Matthew Rowlinson and Mat Evans(York) Emissions
New version of CEDS at 0.1 deg Emma Knowland (NASA) Emissions
MEIC (China regional) for 2000-2017 at 0.5x0.625 deg Shixian Zhai (Harvard) Emissions
  • Need permission from Qiang Zhang (Tsinghua U.) to distribute data
KORUS-AQ emissions for East Asia Katie Travis (NASA) Emissions
  • Need permission to distribute data
Australian anthropogenic Hg emissions Stephen MacFarlane (UOW)
Jenny Fisher (UOW)
Hannah Horowitz (U. Illinois)
Viral Shah (Harvard)
Hg simulation
WRF-GC Hg simulation Xiaotian Xu (Nanjing U.)
Yanxu Zhang (Nanjing U.)
Hg simulation
WRF-GC
Updated HgII gas-partical partitioning Kaiyun Liu (Tsinghua U.)
Qingru Wu (Tsinghua U.)
Shuxiao Wang (Tsinghua U.)
Hg simulation
  • Should be option, not default
Dry deposition to F90 (readability) Chris Holmes (FSU) Dry deposition

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


DMS Chemistry Linia Tashmim (UC Riverside)
William Porter (UC Riverside)
Chemistry
PPN+hv, PPN+OH Robert Ryan (UCL) Chemistry
MBO Michael Vermeuel (UMN) Chemistry
Stratospheric adjustment with RRTMG in GEOS-Chem Seb Eastham (MIT) Science
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
Update surface methane boundary condition using NOAA flask data Lee Murray (Rochester) Input data
Provide recommended rather than hard-coded scaling factors for online emissions Melissa Sulprizio (Harvard) Emissions
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
HgII deposition too high in 13.4; Hg0 conc too low; should not use as is Viral Shah (NASA GMAO)
Yanxu Zhang (Nanjing U.)
Ari Feinberg (MIT)
Hg simulation
Canopy Physics Model Sam Silva (MIT) Emissions &
Science
Gridded EPA (GEPA) version 2 emissions for 2012-2018 Bram Maasakkers (SRON)
Erin McDuffie (WashU),
Melissa Sulprizio (Harvard)
Emissions
CH4 simulation
Reduce dimension of analytical inversion Hannah Nesser (Harvard) Adjoint capability
Retire all BPCH diagnostics Bob Yantosca (Harvard) Diagnostics
GEOS-Chem in CESM 2.3 Lizzie Lundgren (Harvard) Interfacing with ESMs
Assess memory leak in GCHP Killian Murphy (York) Model performance
Point to internal state for species mixing ratios in GCHP and GEOS Lizzie Lundgren (Harvard)
Christoph Keller (NASA)
Structural
Assess precision in GCHP internal state - use R4 for some? Lizzie Lundgren (Harvard) Structural
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York)
Model performance
Convert HEMCO input files to YAML Melissa Sulprizio (Harvard) Structural
Allow easy disabling of HEMCO emissions for testing Melissa Sulprizio (Harvard) Structural
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
Upgrade Fast-JX to Cloud-J Lizzie Lundgren (Harvard) Structural

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
Parameterized effective radius Haihui Zhu (WashU) Aerosols
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
Separate mixing and emissions Bob Yantosca (Harvard) Structural
Modularization of aerosols code for interface with GOCART in GEOS Christoph Keller (GMAO) Structural
Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism Bob Yantosca (Harvard) Structural
Improve load balancing in GCHP Seb Eastham (MIT) Model performance
Update to MAPL 3 in GCHP, including replacement of ExtData.rc with YAML file Lizzie Lundgren (Harvard) Structural
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Model performance
Limit allocation of State_Met to what is needed per simulation Melissa Sulprizio (Harvard) Structural
Make frequency of HEMCO restart file configurable Melissa Sulprizio (Harvard) Diagnostics
Apply masks/scaling in HEMCO based on input category or flag Melissa Sulprizio (Harvard) Structural
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


New soil NOx parameterization Yi Wang (U. Iowa)
Jun Wang (U. Iowa)
Emissions
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
ISORROPIA-lite Becky Alexander (UW) Aerosols
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
Extend the IMI system to other trace gases Lucas Estrada (Harvard) Adjoint capabilities


TOMAS WRF-GC in regional Thailand simulation Win Trivitayanurak (Chulalongkorn U) Aerosols

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