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

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On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the Working Groups and the Steering Committee.
+
On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the [https://geos-chem.seas.harvard.edu/geos-working-groups Working Groups] and the [https://geos-chem.seas.harvard.edu/geos-steering-cmte Steering Committee]. For history of past releases see the [[GEOS-Chem_versions|'''GEOS-Chem Versions wiki page''']].
  
−
We also invite you to view our [https://trello.com/board/geos-chem-support-team/4fe36668fc79a1d3540ba80b GEOS-Chem Support Team project management board on Trello.com], which shows the current GCST workflow.
+
== Merged and awaiting release ==
  
−
== Priorities assigned to upcoming GEOS-Chem versions ==
+
See the links below for items merged and awaiting release.
  
−
=== 12.1.0 ===
+
{| border=1 cellspacing=0 cellpadding=5
 +
|-bgcolor="#CCCCCC"
 +
!width="300px"|Mergeable at any time
 +
!width="200px"|Version in development
  
−
<span style="color:darkorange">'''This version is currently in development. See [[GEOS-Chem_12#12.1.0|the ''GEOS-Chem 12'' wiki page]] for details.'''</span>
+
|-valign="top"
 +
|align="center"|'''[[GEOS-Chem no-diff-to-benchmark]]'''
 +
|align="center"|'''[[GEOS-Chem 14.5.0]]'''
  
−
=== 12.2.0 ===
+
|}
  
−
The items listed below are slated to be included in GEOS-Chem 12.2.0. This is a feature release which will be benchmarked with a 1-month benchmark simulation and a 1-year Rn-Pb-Be benchmark simulation.
+
== Feature integration in progress ==
 +
 
 +
Features listed in this table are actively being integrated into GEOS-Chem by the [https://geoschem.github.io/support-team.html GEOS-Chem Support Team]. In addition, we continuously implement structural updates in the model to maintain and develop coupling with other models including GEOS, CESM, and the model adjoint.  
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
−
!width="500px"|Feature
+
!width="200px"|Feature
−
!width="200px"|Submitted by
+
!width="200px"|Contributor(s)
−
!width="100px"|Type
+
!width="100px"|Model scope
−
!width="300px"|Status
+
!width="100px"|Ease of implementation
 +
!width="300px"|Notes and References
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Features NOT affecting the full-chemistry simulation:
+
|New version of CEDS at 0.1 deg
 +
|Dandan Zhang (WashU)
 +
|Emissions
 +
|Simple
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2171 geos-chem PR #2171]
  
 
|-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]]
+
|Use USTAR read from GEOS instead of calculating from U10M and V10M
−
|Transport WG<br>[[GCST]]
+
|Yuanjian Zhang (WashU)
−
|Benchmarking
+
|Emissions
 +
|Simple
 
|
 
|
−
*[[Transport_Working_Group#List_of_tracers_in_GEOS|A set of passive species]] will be added to the GEOS-Chem Rn-Pb-Be benchmark simulation.  This will facilitate comparisons between GEOS-Chem "Classic" and/or GCHP vs. the NASA GEOS-DAS system.
+
*[https://github.com/geoschem/HEMCO/pull/279 HEMCO PR #279]
 +
*NOTE: WashU will recompute mass tuning factors for each met field & resolution (GCClassic)
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.esrl.noaa.gov/gmd/ccgg/obspack/ ObsPack diagnostic]
+
|New carbon simulation fixes in GC-Classic and GCHP
−
|Andy Jacobson (NOAA/ESRL)
+
|GCST
−
|Structural
+
|Carbon
 +
|Medium
 
|
 
|
−
*Delivered to GCST (May 2017)
+
*[https://github.com/geoschem/geos-chem/issues/2387 geos-chem issue #2387]
 +
*[https://github.com/geoschem/GCHP/issues/431 GCHP issue #430]
  
 
|-valign="top"
 
|-valign="top"
−
|[[GEOS-Chem_12#Replace_HEMCO_built-in_unit_conversions_with_scale_factors_in_config_file|Replace HEMCO built-in unit conversions with scale factors in config file]]
+
|Fix obspack - not working in 14.4.0
−
|[[GCST]]
+
|Bob Yantosca (Harvard)
−
|Structural
+
|Diagnostics
 +
|Medium
 +
|
 +
*[https://github.com/geoschem/geos-chem/issues/2328 geos-chem issue #2328]
 +
 
 +
|-valign="top"
 +
|Capture all trop and PBL height changes in budget diagnostics
 +
|Chris Holmes (FSU)<br>Lizzie Lundgren (Harvard)
 +
|Diagnostics
 +
|Medium
 +
|
 +
*[https://github.com/geoschem/geos-chem/pull/2103 geos-chem PR 2103]
 +
 
 +
|-valign="top"
 +
|Make GC-Classic bit-for-bit reproducible upon restart
 +
|Lizzie Lundgren (Harvard)
 +
|GC-Classic
 +
|Medium
 
|
 
|
−
*Differences in precision and order of operations may result in small number differences
+
*[https://github.com/geoschem/HEMCO/issues/18 HEMCO issue #18]
  
 
|}
 
|}
  
−
=== 12.3.0 ===
+
== Prioritized and in the queue ==
  
−
The items listed below are slated to be included in GEOS-Chem 12.3.0.  This is a feature release which will be validated with a 1-month benchmark simulation.
+
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
−
!width="500px"|Feature
+
!width="200px"|Feature
−
!width="200px"|Submitted by
+
!width="200px"|Contributor(s)
−
!width="100px"|Type
+
!width="100px"|Model scope
−
!width="300px"|Status
+
!width="100px"|Ease of implementation
−
 
+
!width="100px"|Delivery status
−
|-
+
!width="300px"|Notes and References
−
!colspan="4" bgcolor="#CCFFFF"|Features affecting the full-chemistry simulation:
+
  
 
|-valign="top"
 
|-valign="top"
−
|[[ISORROPIA_II#Investigating_persistent_noise_observed_in_ISORROPIA_output|Update ISORROPIA from v2.0 to v2.2, in order to remove persistent noise in output]]
+
|Retire CH4, CO2, tagCO simulations in favor of carbon simulation
−
|Seb Eastham (Harvard)
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|Carbon gases
 +
|Simple
 
|
 
|
−
*Delivered to GCST (May 2017)
 
−
 
−
|-valign="top"
 
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Discussion_of_LAI_Data_Sources|Update MODIS LAI fields for 2005-2016 using Yuan et al. (2011) ]]
 
−
|Jenny Fisher (Wollongong) <br>Barron Henderson (US EPA)
 
−
|Science
 
 
|
 
|
−
*Will require reworking of LAI regridding in GEOS-Chem Classic and pre-processing land map data
+
*[https://github.com/geoschem/geos-chem/issues/2387 geos-chem issue #2387]
  
 
|-valign="top"
 
|-valign="top"
−
|[[MEGAN_v2.1_plus_Guenther_2012_biogenic_emissions#Updated_PFT_file|Updated PFT file for MEGAN]]
+
|Correct the issue that injection height has been artifically decreased by HEMCO
−
|Jenny Fisher (Wollongong)<br>Dylan Millet (UMN)
+
|Yuanjian Zhang (WashU)
−
|Science
+
|Emissions
 +
|Simple
 +
|Delivered June 2024
 
|
 
|
−
*Delivered to GCST (May 2018)
+
*[https://github.com/geoschem/geos-chem/pull/279 geos-chem PR #2358]
  
 
|-valign="top"
 
|-valign="top"
−
|[[Stratospheric_chemistry#Treatment_of_the_mesosphere_in_UCX_simulations|Extend UCX into the mesosphere]]
+
|Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver
−
|Sebastian Eastham (MIT)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Chemistry
 +
|Medium
 +
|TBD
 
|
 
|
−
 
+
* Will probably begin testing after 14.5.0 ships
−
|-valign="top"
+
−
|[[Volcanic_SO2_emissions_from_Aerocom#OMI-based_volcanic_emissions|OMI-based Volcanic emissions 2005-2012]]
+
−
|Cui Ge (U. Iowa)<br>Jun Wang (U. Iowa)
+
−
|Science
+
−
|
+
−
*Working with developers to obtain alternate data for Oct-Dec 2012.
+
  
 
|}
 
|}
  
−
== Priorities not yet assigned to a particular version ==
+
== Ready to go in ==
  
−
The following items have been identified as priorities for GEOS-Chem, but have not yet been assigned to a particular GEOS-Chem version.
+
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.
−
 
+
−
=== Ready to go in ===
+
  
 
{| border=1 cellspacing=0 cellpadding=5  
 
{| border=1 cellspacing=0 cellpadding=5  
 
|-bgcolor="#CCCCCC"
 
|-bgcolor="#CCCCCC"
−
!width="500px"|Feature
+
!width="200px"|Feature
−
!width="200px"|Submitted by
+
!width="200px"|Contributor(s)
−
!width="100px"|Type
+
!width="100px"|Model scope
−
!width="300px"|Status
+
!width="100px"|Delivery status
 +
!width="300px"|Notes and Refereneces
  
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Emissions and surface fluxes updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[GFAS biomass burning emissions]]
+
|Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol
−
|Mat Evans (York)<br>Killian Murphy (York)
+
|Camilo Serrano (McGill)<br>Andreas Zuend (McGill)
−
|Science
+
|Aerosols
 +
|Not delivered
 
|
 
|
−
*Delivered to GCST (Oct 2018)
+
*[https://github.com/geoschem/geos-chem/issues/2392 geos-chem issue #2392]
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon bottom up fluxes: anthro, ocean, land
+
|Update UCX to include gravitational settling of aerosol species beyond just BCPI
−
|Kevin Bowman (JPL)
+
|Conor Barker (UCL)<br>Eloise Marais (UCL)
−
|Science
+
|Aerosols
−
|Kevin Bowman wrote:
+
|Not delivered
−
*This is a a [https://disc.gsfc.nasa.gov/information/news/59e0d52f7cf032426b15c94f/carbon-monitoring-system-cms-carbon-flux-data-sets-released list of data archived from CMS-Flux] that provides bottom up fluxes.  These have been generated for the years 2010-2012 and are ready to go now.  The key datasets are:
+
|
−
**CMSFluxFire
+
−
**CMSFluxFossilfuel
+
−
**CMSFluxNEE
+
−
**CMSFluxOcean
+
  
 +
|-valign="top"
 +
|Seasalt aerosol from sea ice leads (2002-2011)
 +
|Hannah Horrowitz (UIUC)
 +
|Aerosols
 +
|Not delivered
 +
|
 +
*Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
+
|Global organic N dep from various emissions; nitrate aromatics updates
 +
|May Fu (SUSTech)
 +
|Chemistry +<br>Deposition
 +
|Not delivered
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|Wet deposition parameterizations: pH dependency, Henry's law coefficients, etc.
+
|Dry deposition to F90 to improve readability
−
|Sarah Safieddine (MIT)<br>GCST
+
|Chris Holmes (FSU)
−
|Science
+
|Dry Deposition
 +
|Not delivered
 
|
 
|
−
 
+
*[https://github.com/geoschem/geos-chem/issues/2389 geos-chem issue #2389]
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt aerosol alkalinity
+
|Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange
−
|Qianjie Chen (UW)<br>Becky Alexander (UW)<br>Xuan Wang (Harvard)
+
|Joey Lam  (CUHK)<br>Amos Tai (CUHK)
−
|Science
+
|Dry deposition
 +
|Delivered<br>Feb 2021
 
|
 
|
−
*UW version delivered to GCST (Nov 2017)
+
*[https://github.com/geoschem/geos-chem/pull/629 geos-chem PR #629]
  
 
|-valign="top"
 
|-valign="top"
−
|VBS SOA option
+
|FRP-based fire emissions for eastern US at 0.2 (2019-2020)
−
|Rokjin Park (SNU)
+
|Chris Holmes (FSU)
−
|Science
+
|Emissions
 +
|Not delivered
 
|
 
|
−
*Code has been implemented in the ancient v9-01-02 version. 
+
*[https://github.com/geoschem/geos-chem/issues/2388 geos-chem issue #2388]
−
*Bringing this up to the current SOA model (simple SOA, complex SOA) will likely involve significant effort.
+
−
 
+
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|AMAP/UNEP 2035 for Hg simulation
+
|China agriculture NH3 emissions
−
|Helene Angot (MIT)
+
|Amos Tai (CUHK)
−
|Science
+
|Emissions
 +
|Not delivered
 
|
 
|
−
*Data is available, but has not been transferred to GCST yet
 
  
 
|-valign="top"
 
|-valign="top"
−
|Oxidant fields from v10 for 2006-2012
+
|T-dependent anthropogenic VOCs
−
*3D chemical source for CO2, CO
+
|May Fu (SUSTech)
−
*OH for tagged CO & CH4
+
|Emissions
−
|Dylan Jones (UofT)
+
|Not delivered
−
|Science
+
 
|
 
|
−
*Will make data files available on ftp site
+
*Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.
  
 
|-valign="top"
 
|-valign="top"
−
|Africa nested-grid for GEOS-FP and MERRA-2
+
|New source functions for transport tracers beryllium-7 and beryllium-10
−
|Eloise Marais (U. Birmingham)
+
|Minjie Zheng (ETH)
−
|Science
+
|Emissions
 +
|Delivered<br>June 2024
 
|
 
|
−
*Delivered to GCST (Dec 2017)
+
*Available at https://zenodo.org/records/8372652
−
*Could be implemented with Jiawei Zhuang's FlexGrid
+
  
 
|-valign="top"
 
|-valign="top"
−
|West Africa nested-grid for GEOS-FP
+
|LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100
−
|Mat Evans (York)<br>Eleanor Morris (York)
+
|Yang Li (Baylor U)<br>Loretta Mickley (Harvard)
−
|Science
+
|Emissions
 +
|Delivered
 
|
 
|
−
*Could be implemented with Jiawei Zhuang's FlexGrid
+
*Data involves many files- need to think about temporal frequency
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Tagged_sulfate_and_nitrate_simulation|Tagged sulfate simulation]]
+
|Australian Hg emissions (2000-2019)
−
|Becky Alexander (UW)
+
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
−
|Science
+
|Emissions
 +
|Not delivered
 
|
 
|
 +
*[https://pubs.rsc.org/en/content/articlelanding/2022/em/d2em00019a MacFarlane et al. (2024)]
 +
*Includes emissions from black and brown coal power plants, various metal production/processing sources (Aluminium, gold, copper, lead, etc), waste products, cement production, oil refining and petroleum, chlor alkali plants, and cremation
  
 
|-valign="top"
 
|-valign="top"
−
|Arsenic simulation
+
|Hg geogenic emissions (volcanic, rock weathering)
−
|Shiliang Wu (MT)
+
|Eric Roy (MIT)
−
|Science
+
|Emissions
 +
|Not delivered
 
|
 
|
−
 
+
*[https://github.com/geoschem/geos-chem/issues/2361 geos-chem #2361]
−
|-
+
*[https://gmd.copernicus.org/preprints/gmd-2024-65/ Dastoor et al. (2024)]
−
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Update to redistribution of mass in transport
+
|Hg biomass burning - FINN2.5 & GFED4
−
|Seb Eastham (MIT)
+
|Eric Roy (MIT)
−
|Science
+
|Emissions
 +
|Not delivered
 
|
 
|
−
*Stop gap solution pending use of mass fluxes instead of winds in advection
+
*[https://github.com/geoschem/geos-chem/issues/2361 geos-chem #2361]
−
 
+
*[https://gmd.copernicus.org/preprints/gmd-2024-65/ Dastoor et al. (2024)]
−
|-
+
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
  
 
|-valign="top"
 
|-valign="top"
−
|Benchmark of stratospheric simulation
+
|BCC-GC online
−
|Dylan Jones (U. Toronto)
+
|Lin Zhang (PKU)
−
|Benchmarking
+
|External Model
 +
|Not delivered
 
|
 
|
−
*1-yr benchmarks for GEOS-Chem v11-01d and later include comparisons with OSIRIS O3
 
−
*Waiting on OSIRIS NO2 data
 
−
*Waiting on comparisons with ACE-FTS data
 
  
 
|-valign="top"
 
|-valign="top"
−
|Add total column O3 to benchmarks
+
|GC-YIBS with online fire emissions
−
|Chris Holmes (FSU)<br>[[GCST]]
+
|Xu Yue (NUIST)<br>Hong Liao (NUIST)
−
|Benchmarking
+
|External Model
 +
|Not delivered
 
|
 
|
−
*Deferred until GEOS-Chem 12
 
−
*Also note: GCST plans on migrating benchmark plotting code from IDL to Python in v11-03
 
  
 
|-valign="top"
 
|-valign="top"
−
|Further structural updates to facilitate interfacing GEOS-Chem with external models (e.g. WRF, CAM, CESM)
+
|GISS-GC offline (GCAP)
−
|[[GCST]]
+
|Lee Murray (Rochester)
−
|Structural
+
|GCAP
 +
|Not delivered
 
|
 
|
−
*Ongoing
 
−
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Expansion of model capabilities
 
  
 
|-valign="top"
 
|-valign="top"
−
|Archival of roughness length for temperature z0T
+
|Archived TCR-2 OH fields for carbon simulations
−
|[[GCST]]
+
|Kazu Miyazaki (JPL)
−
|Met processing
+
|Input data
 +
|Not delivered
 
|
 
|
−
*Work has not yet begun
+
*This will be the default OH, but users will have the option of selecting other OH fields
 +
 
 
|}
 
|}
  
−
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 19:04, 2 August 2018 (UTC)
+
== Almost there (< 6 months) ==
  
−
=== Almost there (< 6 months) ===
+
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
  
−
{| border=1 cellspacing=0 cellpadding=5
+
{|border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
−
!width="500px"|Item
+
!width="200px"|Feature
−
!width="200px"|Author(s)
+
!width="200px"|Contributor(s)
−
!width="100px"|Type
+
!width="100px"|Model scope
−
!width="300px"|Status
+
!width="420px"|Notes and References
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Transport updates
+
|Fixes to stratospheric aerosol settling
 +
|Connor Barker (UCL)<br>Eloise Marais (UCL)
 +
|Aerosols
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.geosci-model-dev-discuss.net/gmd-2017-125/ GEOS resolution & subgrid convection]
+
|DMS chemistry in v14
−
|Karen Yu (Harvard)
+
|Linia Tashmim (UCR)<br>Will Porter (UCR)
−
|Science
+
|Chemistry
 
|
 
|
−
*To be installed by Bob Yantosca (Harvard), tested by Tailong He (Toronto)
 
−
*Work to begin after [[GEOS-Chem 12#12.0.0|GC 12.0.0]] release
 
  
 
|-valign="top"
 
|-valign="top"
−
|Transport families in the stratosphere
+
|KPP standalone + 3D Interface
−
|Christoph Keller (NASA GMAO)
+
|Obin Sturm (USC)
−
|Science
+
|Chemistry
 
|
 
|
−
*Implemented in GEOS-GC coupled system
 
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Chemistry updates
+
|NO2+OH+H2O kinetics
 +
|Mat Evans (York)
 +
|Chemistry
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|N2O5 hydrolysis updates
+
|LSODES solver in KPP for faster kinetics
−
|Viral Shah (UW)
+
|Haipeng Lin (Harvard)
−
|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
+
|Load balancing in chemistry solver (GCHP)
−
|Chris Holmes (FSU)
+
|Zhouran Sun (WashU)
−
|Science
+
|Chemistry +<br>Performance
 
|
 
|
−
*Defer until paper is submitted
 
−
*Estimate Fall 2018 or sooner
 
  
 
|-valign="top"
 
|-valign="top"
−
|Updated chlorine chemistry
+
|Active chemistry in mesosphere for both GCHP and GCClassic
−
|Xuan Wang (Harvard)
+
|Helena McDonald (MIT)<br>Sebastian Eastham (ICL)
−
|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]]
+
|Updated aromatic oxidation
−
|Katie Travis (MIT)
+
|Stephen MacFarlane (Wollongong)<br>Jenny Fisher (Wollongong)
−
|Structural
+
|Chemistry
 
|
 
|
−
*Defer until the paper is submitted
 
  
 
|-valign="top"
 
|-valign="top"
−
|OH + NO2 rate update
+
|MCO3 uptake by cloud forming MP; leading to lower PAN
−
|Barron Henderson (EPA)
+
|Laura Yang (Harvard)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[Chemistry_Issues#Script_for_evaluating_carbon_balance|Script for checking N, C, etc. balance in chemistry mechanism]]
+
|Implement isotope simulation for CH4 in the carbon simulation
−
|Barron Henderson (EPA)
+
|Lee Murray (Rochester)
−
|Software
+
|Chemistry
−
|Barron Henderson wrote:
+
|
−
*The script for checking the carbon balance exists and works. Ideally, we would move some of the structures into the KPP files to codify them instead of storing them in the script itself. This would be less than 6 months. [https://www.evernote.com/shard/s315/sh/82219b0a-0031-4f3c-a9ca-401964d3b4c5/7af8ad1c743543fa20bf91201ecab2f0 Click HERE for script]
+
*Will have to change negative emissions from soil to a first-order loss process
  
 
|-valign="top"
 
|-valign="top"
−
|Aromatics and dicarbonyl chemistry
+
|Documentation for adding additional aerosol species
−
|William Porter (MIT)<br>Tzung-May Fu (PKU)
+
|Connor Barker (UCL)
−
|Science
+
|Documentation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Document chemical mechanism in KPP file
+
|Column diagnostics
−
|Mat Evans (York)
+
|Lizzie Lundgren (Harvard)<br>Viral Shah (GMAO)
−
|Structural
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Diurnal variability for NH3
+
|TOMAS rate diagnostics -- improve performance
−
|Henze group
+
|Betty Croft (WashU/Dal)
−
|Science
+
|Diagnostics +<br>Performance
−
|Daven Henze wrote:
+
|
−
*The FORTRAN code for implementing NH3 emissions diurnal variability is fairly straightforward.  However, it involves calculation of some quantities that depend upon met fields in the future, and we’re unsure of how to accomplish this in a robust and elegant manner. 
+
 
−
*In particular, we need to know the aerodynamic resistance and surface temperature at every emission time step over the course of a time period X, where X is the time resolution of the NH3 livestock emissions inventory being used.  This is typically monthly, but I could foresee future inventories having higher resolution, so maybe we want to consider this more generically. 
+
−
*One approach would be to pre-process this quantity at high resolution for all years, as is currently being done e.g. for dust emissions.  Another would be to add code to read in this information from met files online, but this would add some i/o to the model.
+
−
+
 
|-valign="top"
 
|-valign="top"
−
|Uptake of HNO3 onto coarse-mode sea salt
+
|Archive gamma values from heterogeneous chemistry
−
|Prasad Kasibhatla (Duke)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Diagnostics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.atmos-chem-phys.net/18/11185/2018/ Photolysis of NITs]
+
|RRTMG Documentation
−
|Prasad Kasibhatla (Duke)
+
|GCST
−
|Science
+
|Documentation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Update heterogeneous processes to address high bias in nitrate
+
|Canopy Physics Model
−
|Chris Holmes (FSU)
+
|Sam Silva (MIT)
−
|Science
+
|Dry Deposition
 
|
 
|
 +
*Available at https://zenodo.org/records/3614062#.XzvrH5NKjOR (GEOS-Chem 12.3.0)
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Aerosol updates
+
|Dry deposition diagnostics by land cover
 +
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
 +
|Dry Deposition
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|[https://www.atmos-chem-phys-discuss.net/acp-2018-459/ Update to hygroscopic growth]
+
|Dry deposition process diagnostics
−
|Robyn Latimer (Dalhousie)<br>Randall Martin (Dalhousie)
+
|Holly Nowell (FSU)<br>Chris Holmes (FSU)
−
|Science
+
|Dry Deposition
 
|
 
|
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Emissions updates
+
|Biomass burning for TOMAS
 +
|Nicole June (CSU)
 +
|Emissions +<br>Microphysics
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent lightning NOx emissions (3-hourly)
+
|Historic biomass burning (1750-2010)
−
|Lee Murray (Rochester)
+
|Pengfei Liu (Georgia Tech)
−
|Science
+
|Emissions
 
|
 
|
−
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent dust emissions (hourly)
+
|Rice methane emissions
−
|David Ridley (MIT)
+
|Zichong Cheng (Harvard)
−
|Science
+
|Emissions+<br>Carbon simulation
 
|
 
|
−
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent biogenic emissions (hourly)
+
|Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3)
−
|Jintai Lin (PKU)
+
|Tia Scarpelli (Carbon Mapper)<br>Melissa Sulprizio (Harvard)
−
|Science
+
|Emissions
 
|
 
|
−
*Data has not yet been transferred to GCST
 
  
 
|-valign="top"
 
|-valign="top"
−
|Grid-independent sea salt emissions (hourly)
+
|New prior CO2 biospheric fluxes from CMS-FLUX and GMAO
−
|Jintai Lin (PKU)
+
|Kevin Bowman (JPL)<br>Lesley Ott (GMAO)
−
|Science
+
|Emissions
 
|
 
|
−
*Data has not yet been transferred to GCST
+
*GMAO can provide high-resolution  fluxes (as high as 12 km)
  
 
|-valign="top"
 
|-valign="top"
−
|EPA-derived BC/OA emissions over US (1990-2012)
+
|Snowpack Br2 emission
−
|David Ridley (MIT)<br>Chi Li (Dalhousie)
+
|Chris Holmes (FSU)
−
|Science
+
|Emissions
 
|
 
|
−
*Emissions are available but need to be formatted properly.
 
−
*Could be ready by Fall-Winter 2018, depending on D. Ridley's availability
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[FINNv1_biomass_burning_emissions|FINN biomass burning emissions for 2014-2016]]
+
|EDGAR v8.1_toxHg emissions for 1970-2022
−
|Barron Henderson (US EPA)
+
|Eric Roy (MIT)
−
|Science
+
|Emissions
 
|
 
|
−
*Pending receipt of corrected data files
 
  
 
|-valign="top"
 
|-valign="top"
−
|EPA NEI2011 Version EK
+
|Improve pressure handling in GCHP advection
−
|Zitely Tzompa-Sosa (CSU)<br>Emily Fischer (CSU)
+
|Yuanjian Zhang (WashU)<br>Seb Eastham (ICL)
−
|Science
+
|GCHP
 
|
 
|
−
*Estimate Late 2018 or sooner
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[MASAGE_NH3_inventory|MASAGE inventory in HEMCO as default]]
+
|Add error trap for duplicate scale factors in HEMCO
−
|Fabien Paulot (NOAA/GFDL)<br>Amos Tai (CUHK)
+
|Bob Yantosca (Harvard)
−
|Science
+
|HEMCO
 
|
 
|
−
*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 GC community.
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[MASAGE_NH3_inventory#Non-agricultural_NH3_for_use_with_MASAGE|Non-agricultural NH3 for use with MASAGE]]
+
|Integration testing: Add stretched grid
−
|Amos Tai (CUHK)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|Quality Assurance
 
|
 
|
−
*Waiting on data
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Sulfate_aerosols#Ocean_ammonia_emission_inventory|Ocean ammonia emission inventory]]
+
|Integration testing: Add GCHP mass flux run
−
|Fabien Paulot (NOAA/GFDL)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|Quality Assurance
 
|
 
|
−
*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
+
|Integration testing: Reinstate TOMAS40
−
|Juliet Zhu (CSU)<br>Emily Fischer (CSU)
+
|Betty Croft (Dalhousie/WashU)
−
|Science
+
|Quality Assurance
 
|
 
|
−
*Code was available in pre v9-02 (HEMCO)
 
−
*Code may have been ported to v11-02a but this option was not activated
 
−
|-
 
−
!colspan="4" bgcolor="#CCFFFF"|Surface fluxes and land usage updates
 
  
 
|-valign="top"
 
|-valign="top"
−
|Land cover module: Harmonized biosphere-atmosphere exchange and implementing CLM or manual land cover change experiments
+
|Strat-adjusted RF in GCC and GCHP
−
|Jeff Geddes (BU)
+
|Connor Barker (UCL)<br>Eloise Marais (UCL)
−
|Science
+
|Radiation
 
|
 
|
−
*Has been added into v9-02 (pre-HEMCO)
 
−
*Bringing this up to v11 will probably need significant effort
 
−
*BU group/GCST will meet summer 2018 to discuss implementation
 
  
 
|-valign="top"
 
|-valign="top"
−
|Online O3-LAI coupling in GEOS-Chem
+
|Continue cleanup of C-preprocessor switches
−
|Amos Tai (CUHK)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Wet deposition updates
+
|Updates to Luo deposition scheme
 +
|Gan Luo (Albany)
 +
|Wet Deposition
 +
|
 +
*New version, keep as switch (not default)
  
 
|-valign="top"
 
|-valign="top"
−
|Wet scavenging in mixed-phase clouds
+
|Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer
−
|Bo Zhang (NIA/NASA Langley)
+
|Gan Luo (Albany)<br>Fangqun Yu (Albany)
−
|Science
+
|Wet Deposition
 
|
 
|
−
*Defer until paper is published
 
−
*Estimate Fall 2018
 
  
−
|-
+
|}
−
!colspan="4" bgcolor="#CCFFFF"|Specialty simulation updates
+
 
 +
== 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"
−
|Radon emission update
+
|ML algorithms for bulk aerosol
−
|Bo Zhang (NIA/NASA Langley)
+
|Arshad Nair (Albany)<br>Fangqun Yu (Albany)
−
|Science
+
|Aerosols
 
|
 
|
−
*Defer until paper is published
 
−
*Estimate Fall 2018
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[POPs simulation#PCB simulation|PCB simulation]]
+
|Heterogeneous sulfate chemistry
−
|Colin Thackray (Harvard)<br>Carey Friedman (formerly MIT)<br>Helen Amos (formerly Harvard)
+
|Katie Travis (NASA)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|New EDGAR sectoral inventory for Hg (1970-2012)
+
|H2 as an active species
−
|Amanda Giang (MIT)
+
|Seb Eastham (ICL)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive GISS met fields from RCP scenarios for community
+
|HCN, acetonitrile as fire tracers
−
|Lee Murray (Rochester)
+
|Kevin Bates (CU Boulder)
−
|Science
+
|Chemistry
 
|
 
|
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|GCHP updates
+
|Implement ethane in carbon simulation
 +
|Yuzhong Zhang (Westlake)
 +
|Chemistry
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|New version of MAPL
+
|Mesospheric source of CO
−
|GMAO<br>Lizzie Lundgren (GCST)
+
|Dylan Jones (UofT)<br>Pam Wales (NASA GSFC)
−
|Structural
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Flux ingestion
+
|Drought-stress algorithm
−
|Sebastian Eastham (MIT)
+
|Wei Li (Houston)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Use CMake to simplify GCHP build process
+
|Physically-based resolution correction for BVOC emissions using MEGAN
−
|Liam Bindle (Dalhousie)
+
|May Fu (SUSTech)
−
|Structural
+
|Emissions
 
|
 
|
  
−
|-
+
|-valign="top"
−
!colspan="4" bgcolor="#CCFFFF"|Structural updates
+
|Canadian forest fire prediction system (Canada government forecast model)
 +
|Robin Stevens (Montreal)
 +
|Emissions
 +
|
  
 
|-valign="top"
 
|-valign="top"
−
|[[FlexGrid|FlexGrid Stage 2: Enable nested simulations over any custom domains]]
+
|Cooking emissions (not biofuel)
−
|Jiawei Zhuang (Harvard)<br>Melissa Sulprizio ([[GCST]])
+
|Kelvin Bates (CU Boulder)
−
|Structural
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Clean up SOA diagnostics
+
|State-specific annual emissions scaling factors (US) (1990-2021)
−
|GCST
+
|Ishir Dutta (MIT)
−
|Structural
+
|Emissions
 
|
 
|
−
*GCST has implemented many existing SOA diagnostics in netCDF
 
−
*GCST would need help from the community to streamline these diagnostics
 
  
 
|-valign="top"
 
|-valign="top"
−
|Calculation consistency throughout code: surface area, HGF (via species database)
+
|GISS-GC online
−
|GCST
+
|Lee Murray (Rochester)
−
|Structural
+
|External model
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Harmonizing Henry's Law coefficients across wet and dry deposition
+
|Hybrid MPI-OpenMP in GCHP
−
|[[GCST]]
+
|Seb Eastham (MIT)<br>Killian Murphy (York)<br>Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
 
|
 
|
−
*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
+
|MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files
−
|Rokjin Park (SNU)<br>Daniel Rothenberg (MIT)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
 
|
 
|
−
*Rokjin Park says code is ready
 
−
*Waiting on clarification in which version this is implemented in.
 
−
 
−
|}
 
−
 
−
--[[User:Lizzie Lundgren|Lizzie Lundgren]] ([[User talk:Lizzie Lundgren|talk]]) 15:11, 29 June 2018 (UTC)
 
−
 
−
=== Over the horizon (6-12 months) ===
 
−
 
−
{| border=1 cellspacing=0 cellpadding=5
 
−
|- bgcolor="#cccccc"
 
−
!width="500px"|Item
 
−
!width="200px"|Author(s)
 
−
!width="100px"|Type
 
−
!width="300px"|Status
 
  
 
|-valign="top"
 
|-valign="top"
−
|[http://www.atmos-chem-phys.net/16/2819/2016/ A snow NOx source from deep snowpack]
+
|MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files
−
|Maria Zatko (UW)<br>Becky Alexander (UW)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
 
|
 
|
−
*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)
+
|MAPL3: Wildcards in GCHP History
−
|Lu Shen (Harvard)<br>Melissa Sulprizio (Harvard)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
 
|
 
|
−
*Defer until MEIC paper is published
 
  
 
|-valign="top"
 
|-valign="top"
−
|GISS-GC (ICECAP/GCAP2) in standard model + benchmark
+
|MAPL3: Output emissions with positive up convention in GCHP
−
|Lee Murray (Rochester)<br>Eric Leibensperger (SUNY Plattsburgh)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|GCHP
−
|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
+
|Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone
−
|Lee Murray (Rochester)<br>Pengfei Liu (Harvard)<br>Yang Li (Harvard)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Performance
 
|
 
|
−
*Rochester and Harvard groups are coordinating, to avoid duplication of effort
 
  
 
|-valign="top"
 
|-valign="top"
−
|CESM-GC GCHP
+
|Photophysical oxidation of aldehydes
−
|Seb Eastham (MIT)
+
|Paulo Sebastianelli (Wollongong)<br>Jenny Fisher (Wollongong)
−
|Science
+
|Chemistry
 
|
 
|
−
*Seb Eastham is now the lead developer.
 
−
*Estimate late 2018 or early 2019; validation will take time
 
  
 
|-valign="top"
 
|-valign="top"
−
|Additional modifications for [[FlexChem]], including:
+
|DMS updates
−
*Rebuild the pre-built chemistry mechanisms (Standard, Tropchem, SOA-SVPOA) with [http://www.paratools.com/Kppa Kppa]
+
|Will Porter (UCR)
−
*Add capability for custom chemistry mechanism by building KPP on-the-fly in GEOS-Chem
+
|Chemistry
−
|[[GCST]]
+
−
|Structural
+
 
|
 
|
−
*Mike Long, who was the principal proponent behind these updates, has since left the GC community.
 
−
*We are not sure who will take this over
 
  
 
|-valign="top"
 
|-valign="top"
−
|Dynamic fire modeling/prediction
+
|Furans emission and chemistry
−
|Shiliang Wu (MNT)
+
|Lixu Jin (Montana)<br>Lu Hu (Montana)
−
|Science
+
|Chemistry + <br>Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Interannually varying ocean model BCs for Hg from ocean model
+
|Cl2 prodcution from Fe aerosol
−
|Colin Thackray (Harvard)
+
|Qianjie Chen (HK Poly)<br>Becky Alexander (UW)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|PAH & PFCA simulations
+
|VCP emissions
−
|Peter Ivatt (York)<br>Mat Evans (York)<br>Noelle Selin (MIT)<br>Colin Thackray (Harvard)
+
|Kevin Bates (CU Boulder)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|CH4 in full chemistry simulation
+
|Bidirectional land-atmosphere exchange for Hg
−
|Seb Eastham (Harvard)
+
|Yuying Cui (MIT/Tsinghua)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Standard future land use maps (PFT, LAI) for RCP/CMIP6 simulations
+
|OH covariances for inversions
−
|Colette Heald (MIT)<br>Loretta Mickley (Harvard)
+
|Elise Penn (Harvard)
−
|Science
+
|Inversions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Archive GISS met fields from CMIP6 scenarios for community
+
|CESM2-GC offline
−
|Lee Murray (Rochester)
+
|Seb Eastham (ICL)<br>Lee Murray (Rochester)
−
|Science
+
|Met fields
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to cold-temperature deposition
+
|Re-binning of off-line sea salt and dust for TOMAS
−
|Lyatt Jaegle (UW)
+
|Betty Croft (Dalhousie)
−
|Science
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Simple parameterization for CO2-O3 dependence of stomatal resistance
+
|TOMAS nucleation updates
−
|Amos Tai (CUHK)
+
|Sam O'Donnell (CSU)
−
|Science
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|NH3 emissions over China
+
|Stratospheric aerosol APM
−
|Lin Zhang (PKU)
+
|Fangqun Yu (SUNY Albany)
−
|Science
+
|Microphysics
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Using GEOS-Chem within GEOS-5
+
|Transition from MERRA-2 to GEOS-IT for benchmarking
−
|Loretta Mickley (Harvard)
+
|Yuanjian Zhang (WashU)
−
|Science
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon cycle outputs in xCO2, xCH4 as a diagnostic
+
|Automate integration testing on AWS
−
|Beata Bukosa (Wollongong)<br>Dylan Jones (UofT)
+
|Yidan Tang (WashU)
−
|Science
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Seasonal EMEP emissions back to 1980
+
|Integration testing: Add across end of year run
−
|Mat Evans (York)
+
|GCST
−
|Science
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to NO2 dry deposition
+
|Integration testing: Add GEOS-IT
−
|Brian Boys (Dalhousie)
+
|Yuanjian Zhang (WashU)
−
|Science
+
|Quality Assurance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|APM update and integration with most recent GEOS-Chem version
+
|Separate mixing, emissions, and drydep
−
|Gan Luo (SUNY Albany)
+
|Yuanjian Zhang (WashU)
 
|Structural
 
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Cosmogenic tracer production
+
|Intel IFX compiler
−
|Lee Murray (Rochester)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Explore resolution-consistent dust emissions
+
|CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code
−
*Make high-res concentrations or mass fluxes available offline, implement in met field processing
+
|Bob Yantosca (Harvard)<br>Lee Murray (Rochester)
−
|David Ridley (MIT)<br>GCST<br>Nested Model WG
+
|Structural
−
|Science
+
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Dust emissions at nested-grid resolutions
+
|Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO
−
|Yuxuan Wang (U. Houston)<br>Jun Wang (U. Iowa)
+
|Lizzie Lundgren (Harvard)
−
|Science
+
|Structural
 
|
 
|
−
*Check for overlap with resolution-consistent dust emissions above
 
  
 
|-valign="top"
 
|-valign="top"
−
|[[Wet_deposition#Update_SO2_scavenging_in_convective_updrafts_for_consistency|Update SO2 scavenging in convective updrafts for consistency]]
+
|Limit allocation of State_Met to what is needed per simulation
−
|Duncan Fairlie (NASA/LARC)  
+
|Melissa Sulprizio (Harvard)
−
|Science
+
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt emission from sea ice
+
|Using 3-D precipitation fluxes to calculate precipitation formation and re-evaporation in scavenging (to be consistent with GEOS/GOCART & ground precipitation)
−
|Jiayue Huang (UW)
+
|Gan Luo (Albany)<br>Hongyu Liu (NIA/LaRC)<br>Bo Zhang (NIA/LaRC)
−
|Science
+
|Wet deposition
 
|
 
|
  
 
|}
 
|}
  
−
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 19:42, 24 May 2018 (UTC)
+
== Longer term (12-24 months)==
  
−
=== Longer term (12-24 months)===
+
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.
  
 
{| border=1 cellspacing=0 cellpadding=5
 
{| border=1 cellspacing=0 cellpadding=5
 
|- bgcolor="#cccccc"
 
|- bgcolor="#cccccc"
−
!width="500px"|Item
+
!width="200px"|Feature
−
!width="200px"|Author(s)
+
!width="200px"|Contributor(s)
−
!width="100px"|Type
+
!width="100px"|Model scope
−
!width="300px"|Status
+
!width="420px"|Notes and References
  
 
|-valign="top"
 
|-valign="top"
−
|GCHP stretched grid
+
|Modal aerosol model (MAM7) in GCHP
−
|Jiawei Zhuang (Harvard)
+
|Shreya Sharma (MIT)
−
|Science
+
|Aerosols
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|1/8 degree nested-grid simulations with GEOS-FP
+
|Online OCIM ocean biogeochemistry
−
|Nested Model WG
+
|Lee Murray (Rochester)<br>Hannah Horowitz (UIUC)<br>Chris Holmes (FSU)
−
|Science
+
|Chemistry
 
|
 
|
−
*Wait for more interest
 
  
 
|-valign="top"
 
|-valign="top"
−
|Embedding GEOS-Chem into CESM
+
|Perchlorate chemistry
−
|Jean-Francois Lamarque (NCAR)
+
|Yuk Chun Chan (UW)
−
|Science
+
|Chemistry
 
|
 
|
−
*NOTE: Seb Eastham is already working on this
 
  
 
|-valign="top"
 
|-valign="top"
−
|Adjoint of carbon cycle simulation in GCHP
+
|Non-stomatal dry deposition (2-layer canopy model)
−
|Kevin Bowman (JPL)
+
|Michael Vermeuel (Purdue)
−
|Science
+
|Dry Deposition
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Isoprene chemistry v2 (new Caltech update)
+
|Continental chloride particle emissions (salty dust, road salt)
−
|Kelvin Bates (Caltech)
+
|Jessica Haskins (Utah)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Contemporary land cover: developing historical and updated GEOS-Chem land cover maps based on satellite remote sensing
+
|Multivolatility emission inventory to address gaps in EDGAR/HTAP etc.
−
|Jeff Geddes (BU)
+
|Ruochong (Tshingua)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Farquhar-Ball-Barry model to calculate stomatal resistance
+
|Lightning NOx production rates
−
|Amos Tai (CUHK)<br>Jeff Geddes (BU)
+
|Bex Horner (UCL)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Impacts of chemistry on ecosystem/carbon cycle
+
|HFO and CF3CHO
−
|Kevin Bowman (JPL)<br>Anthony Bloom (JPL)
+
|Beth Killen (Wollongong)<br>Jenny Fisher (Wollongong)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Improved lightning emission scheme
+
|Glyoxal updates from isoprene
−
|Lee Murray (Rochester)
+
|Tzung-May Fu (SUSTech)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Resolution-independent lightning NOx
+
|Iodine chemistry
−
|Lee Murray (Rochester)
+
|Becky Alexander (UW)<br>Xuan Wang (CUHK)
−
|Science
+
|Chemistry
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Bidirectional NH3 emissions
+
|GFED5 biomass burning
−
|Juliet Zhu (CSU)
+
|Eric Roy (MIT)
−
|Science
+
|Emissions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Country-based weekday/weekend variability for EDGAR 4.2
+
|Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble
−
|Lee Murray (Rochester)<br>Christoph Keller (Harvard)
+
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Update keytone photolysis
+
|Soil Hg emissions 2010-2020
−
|Jared Brewer (CSU)<br>Emily Fischer (CSU)
+
|Eric Roy (MIT)<br>Ari Feinberg (IQF-CSIC)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Small alkyl nitrates
+
|Air-sea exchange parameterization
−
|Jenny Fisher (Wollongong)
+
|Eric Roy (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|YIBS-GC chemistry-biosphere-fire coupling
+
|Soil Hg emissions parameterization
−
|Loretta Mickley (Harvard)<br>Xu Yue (IAP)
+
|Ari Feinberg (IQF-CSIC)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Nitrogen-LAI coupling
+
|Sea salt uptake of GOM
−
|Lin Zhang (PKU)<br>Amos Tai (CUHK)
+
|Eric Roy (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Implementing humidity/VPD dependence of dry deposition
+
|Photoreduction rate constant
−
|Jennifer Murphy (U. Toronto)
+
|Eric Roy (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|SO2 wet scavenging
+
|New observations (2010-2020) in standardized Hg benchmark for intercomparison
−
|Duncan Fairlie (NASA Langley)
+
|Eric Roy (MIT)/Ari Feinberg (IQF-CSIC)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Heterogeneous sulfate production
+
|Hg simulation in GCHP
−
|Lin Zhang (PKU)<br>Becky Alexander (UW)<br>Yuxuan Wang (U. Houston)
+
|Eric Roy (MIT)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|MOSAIC implementation
+
|OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB)
−
|Sebastian Eastham (Harvard)
+
|Hannah Horowitz (UIUC)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Particle size climatology
+
|Possibly updating Hg oxidation chemistry based on Utah field campaigns
−
|Fangqun Yu (SUNY Albany)
+
|Jessica Haskins (Utah)
−
|Science
+
|Hg simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Sea salt/dust size distribution
+
|New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online
−
|David Ridley (MIT)<br>Colette Heald (MIT)
+
|Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC)
−
|Science
+
|Input data
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Updates to GTMM
+
|Extend IMI to CO2 (ICI)
−
|Rebecca Stern (Harvard)
+
|Hannah Nesser (JPL)  
−
|Science
+
|Inversions
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Tracer transport ocean
+
|Global emission inventory of metals
−
|Chris Holmes (FSU)
+
|Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U)
−
|Science
+
|Metals simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Include Hg in full chemistry simulation
+
|Investigate and improve performance of aerosol chemistry
−
|Noelle Selin (MIT)
+
|Bob Yantosca (Harvard)
−
|Science
+
|Performance
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Goddard seasonal weather prediction in GCHP
+
|PAH - update from version 11
−
|Kevin Bowman (JPL)
+
|Lexia Cicone (MIT)
−
|Science
+
|POPs simulation
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Climate index diagnostics (drought, etc.)
+
|Species database more accessible; doc updates; TOL discussion
−
|Chemistry-ecosystems-climate WG
+
|Jessica Haskins (Utah)
 
|Structural
 
|Structural
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Joint CO/CO2/CH4 simulation
+
|Stretched-grid plotting in GCPy
−
|Nicholas Deutscher (U. Wollongong)
+
|Killian Murphy (York)
−
|Science
+
|Tools
 
|
 
|
  
 
|-valign="top"
 
|-valign="top"
−
|Carbon coupling: oceans and terrestrial models
+
|Model inter-comparison of transport (GEOS, GCHP, GCClassic)
−
|Chris Holmes (FSU)
+
|Lizzie Lundgren (Harvard), Emma Knowland (NASA)
−
|Science
+
|Transport
 
|
 
|
−
*Ocim-pure physical transport, ECCO-Darwin ocean biogeochemistry
 
  
 
|-valign="top"
 
|-valign="top"
−
|DMS oxidation scheme updating
+
|Comparing mass fluxes in GCHP vs. traditional lat/lon wind
−
|Qianjie Chen (UW)<br>Chemistry WG
+
|Yuanjian Zhang (WashU), Seb Eastham (ICL)
−
|Science
+
|Transport
−
|
+
−
 
+
−
|-valign="top"
+
−
|Limiting NH3 uptake due to OA
+
−
|Rachel Silvern (Harvard)
+
−
|Science
+
−
|
+
−
 
+
−
|-valign="top"
+
−
|[[GEOS-Chem_species_units|Uniformity of units throughout GEOS-Chem components]]
+
−
|[[GCST]]
+
−
|Structural
+
 
|
 
|
  
 
|}
 
|}
−
 
−
--[[User:Bmy|Bob Yantosca]] ([[User talk:Bmy|talk]]) 15:32, 23 May 2018 (UTC)
 

Latest revision as of 18:24, 26 September 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 14.5.0

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
New version of CEDS at 0.1 deg Dandan Zhang (WashU) Emissions Simple
Use USTAR read from GEOS instead of calculating from U10M and V10M Yuanjian Zhang (WashU) Emissions Simple
  • HEMCO PR #279
  • NOTE: WashU will recompute mass tuning factors for each met field & resolution (GCClassic)
New carbon simulation fixes in GC-Classic and GCHP GCST Carbon Medium
Fix obspack - not working in 14.4.0 Bob Yantosca (Harvard) Diagnostics Medium
Capture all trop and PBL height changes in budget diagnostics Chris Holmes (FSU)
Lizzie Lundgren (Harvard) 		Diagnostics Medium
Make GC-Classic bit-for-bit reproducible upon restart Lizzie Lundgren (Harvard) GC-Classic 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
Retire CH4, CO2, tagCO simulations in favor of carbon simulation Melissa Sulprizio (Harvard) Carbon gases Simple
Correct the issue that injection height has been artifically decreased by HEMCO Yuanjian Zhang (WashU) Emissions Simple Delivered June 2024
Investigate potential performance gains of replacing the KPP Rosenbrock solver with the LSODE solver Bob Yantosca (Harvard) Chemistry Medium TBD
  • Will probably begin testing after 14.5.0 ships

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 Refereneces


Binary Activity Thermodynamic (BAT) model for non-ideal mixing of water and organics in organic aerosol Camilo Serrano (McGill)
Andreas Zuend (McGill) 		Aerosols Not delivered
Update UCX to include gravitational settling of aerosol species beyond just BCPI Conor Barker (UCL)
Eloise Marais (UCL) 		Aerosols Not delivered
Seasalt aerosol from sea ice leads (2002-2011) Hannah Horrowitz (UIUC) Aerosols Not delivered
  • Offline and online, ready to go in HEMCO (optional in addition to existing seasalt emissions)
Global organic N dep from various emissions; nitrate aromatics updates May Fu (SUSTech) Chemistry +
Deposition 		Not delivered
Dry deposition to F90 to improve readability Chris Holmes (FSU) Dry Deposition Not delivered
Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange Joey Lam (CUHK)
Amos Tai (CUHK) 		Dry deposition Delivered
Feb 2021
FRP-based fire emissions for eastern US at 0.2 (2019-2020) Chris Holmes (FSU) Emissions Not delivered
China agriculture NH3 emissions Amos Tai (CUHK) Emissions Not delivered
T-dependent anthropogenic VOCs May Fu (SUSTech) Emissions Not delivered
  • Option. Requires processing existing anthropogenic VOC emissions to generate offline emissions to read in. Parameterised for China.
New source functions for transport tracers beryllium-7 and beryllium-10 Minjie Zheng (ETH) Emissions Delivered
June 2024
LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 Yang Li (Baylor U)
Loretta Mickley (Harvard) 		Emissions Delivered
  • Data involves many files- need to think about temporal frequency
Australian Hg emissions (2000-2019) Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Emissions Not delivered
  • MacFarlane et al. (2024)
  • Includes emissions from black and brown coal power plants, various metal production/processing sources (Aluminium, gold, copper, lead, etc), waste products, cement production, oil refining and petroleum, chlor alkali plants, and cremation
Hg geogenic emissions (volcanic, rock weathering) Eric Roy (MIT) Emissions Not delivered
Hg biomass burning - FINN2.5 & GFED4 Eric Roy (MIT) Emissions Not delivered
BCC-GC online Lin Zhang (PKU) External Model Not delivered
GC-YIBS with online fire emissions Xu Yue (NUIST)
Hong Liao (NUIST) 		External Model Not delivered
GISS-GC offline (GCAP) Lee Murray (Rochester) GCAP Not delivered
Archived TCR-2 OH fields for carbon simulations Kazu Miyazaki (JPL) Input data Not delivered
  • This will be the default OH, but users will have the option of selecting other OH fields

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
Fixes to stratospheric aerosol settling Connor Barker (UCL)
Eloise Marais (UCL) 		Aerosols
DMS chemistry in v14 Linia Tashmim (UCR)
Will Porter (UCR) 		Chemistry
KPP standalone + 3D Interface Obin Sturm (USC) Chemistry
NO2+OH+H2O kinetics Mat Evans (York) Chemistry
LSODES solver in KPP for faster kinetics Haipeng Lin (Harvard) Chemistry
Load balancing in chemistry solver (GCHP) Zhouran Sun (WashU) Chemistry +
Performance
Active chemistry in mesosphere for both GCHP and GCClassic Helena McDonald (MIT)
Sebastian Eastham (ICL) 		Chemistry
Updated aromatic oxidation Stephen MacFarlane (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
MCO3 uptake by cloud forming MP; leading to lower PAN Laura Yang (Harvard) Chemistry
Implement isotope simulation for CH4 in the carbon simulation Lee Murray (Rochester) Chemistry
  • Will have to change negative emissions from soil to a first-order loss process
Documentation for adding additional aerosol species Connor Barker (UCL) Documentation
Column diagnostics Lizzie Lundgren (Harvard)
Viral Shah (GMAO) 		Diagnostics
TOMAS rate diagnostics -- improve performance Betty Croft (WashU/Dal) Diagnostics +
Performance
Archive gamma values from heterogeneous chemistry Bob Yantosca (Harvard) Diagnostics
RRTMG Documentation GCST Documentation
Canopy Physics Model Sam Silva (MIT) Dry Deposition
Dry deposition diagnostics by land cover Holly Nowell (FSU)
Chris Holmes (FSU) 		Dry Deposition
Dry deposition process diagnostics Holly Nowell (FSU)
Chris Holmes (FSU) 		Dry Deposition
Biomass burning for TOMAS Nicole June (CSU) Emissions +
Microphysics
Historic biomass burning (1750-2010) Pengfei Liu (Georgia Tech) Emissions
Rice methane emissions Zichong Cheng (Harvard) Emissions+
Carbon simulation
Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) Tia Scarpelli (Carbon Mapper)
Melissa Sulprizio (Harvard) 		Emissions
New prior CO2 biospheric fluxes from CMS-FLUX and GMAO Kevin Bowman (JPL)
Lesley Ott (GMAO) 		Emissions
  • GMAO can provide high-resolution fluxes (as high as 12 km)
Snowpack Br2 emission Chris Holmes (FSU) Emissions
EDGAR v8.1_toxHg emissions for 1970-2022 Eric Roy (MIT) Emissions
Improve pressure handling in GCHP advection Yuanjian Zhang (WashU)
Seb Eastham (ICL) 		GCHP
Add error trap for duplicate scale factors in HEMCO Bob Yantosca (Harvard) HEMCO
Integration testing: Add stretched grid Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Add GCHP mass flux run Lizzie Lundgren (Harvard) Quality Assurance
Integration testing: Reinstate TOMAS40 Betty Croft (Dalhousie/WashU) Quality Assurance
Strat-adjusted RF in GCC and GCHP Connor Barker (UCL)
Eloise Marais (UCL) 		Radiation
Continue cleanup of C-preprocessor switches Lizzie Lundgren (Harvard) Structural
Updates to Luo deposition scheme Gan Luo (Albany) Wet Deposition
  • New version, keep as switch (not default)
Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer Gan Luo (Albany)
Fangqun Yu (Albany) 		Wet Deposition

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
ML algorithms for bulk aerosol Arshad Nair (Albany)
Fangqun Yu (Albany) 		Aerosols
Heterogeneous sulfate chemistry Katie Travis (NASA) Chemistry
H2 as an active species Seb Eastham (ICL) Chemistry
HCN, acetonitrile as fire tracers Kevin Bates (CU Boulder) Chemistry
Implement ethane in carbon simulation Yuzhong Zhang (Westlake) Chemistry
Mesospheric source of CO Dylan Jones (UofT)
Pam Wales (NASA GSFC) 		Emissions
Drought-stress algorithm Wei Li (Houston) Emissions
Physically-based resolution correction for BVOC emissions using MEGAN May Fu (SUSTech) Emissions
Canadian forest fire prediction system (Canada government forecast model) Robin Stevens (Montreal) Emissions
Cooking emissions (not biofuel) Kelvin Bates (CU Boulder) Emissions
State-specific annual emissions scaling factors (US) (1990-2021) Ishir Dutta (MIT) Emissions
GISS-GC online Lee Murray (Rochester) External model
Hybrid MPI-OpenMP in GCHP Seb Eastham (MIT)
Killian Murphy (York)
Lizzie Lundgren (Harvard) 		GCHP
MAPL3: Update to MAPL3 in GCHP, including replacement of ExtData.rc and HISTORY.rc with YAML files Lizzie Lundgren (Harvard) GCHP
MAPL3: Comply with MAPL "positive" standard in GCHP diagnostic files Lizzie Lundgren (Harvard) GCHP
MAPL3: Wildcards in GCHP History Lizzie Lundgren (Harvard) GCHP
MAPL3: Output emissions with positive up convention in GCHP Lizzie Lundgren (Harvard) GCHP
Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone Bob Yantosca (Harvard) Performance
Photophysical oxidation of aldehydes Paulo Sebastianelli (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
DMS updates Will Porter (UCR) Chemistry
Furans emission and chemistry Lixu Jin (Montana)
Lu Hu (Montana) 		Chemistry +
Emissions
Cl2 prodcution from Fe aerosol Qianjie Chen (HK Poly)
Becky Alexander (UW) 		Chemistry
VCP emissions Kevin Bates (CU Boulder) Emissions
Bidirectional land-atmosphere exchange for Hg Yuying Cui (MIT/Tsinghua) Hg simulation
OH covariances for inversions Elise Penn (Harvard) Inversions
CESM2-GC offline Seb Eastham (ICL)
Lee Murray (Rochester) 		Met fields
Re-binning of off-line sea salt and dust for TOMAS Betty Croft (Dalhousie) Microphysics
TOMAS nucleation updates Sam O'Donnell (CSU) Microphysics
Stratospheric aerosol APM Fangqun Yu (SUNY Albany) Microphysics
Transition from MERRA-2 to GEOS-IT for benchmarking Yuanjian Zhang (WashU) Quality Assurance
Automate integration testing on AWS Yidan Tang (WashU) Quality Assurance
Integration testing: Add across end of year run GCST Quality Assurance
Integration testing: Add GEOS-IT Yuanjian Zhang (WashU) Quality Assurance
Separate mixing, emissions, and drydep Yuanjian Zhang (WashU) Structural
Intel IFX compiler Bob Yantosca (Harvard) Structural
CMake option to only build libraries but not executable, also passing C-preprocessor statements to turn off code Bob Yantosca (Harvard)
Lee Murray (Rochester) 		Structural
Remove differences introduced when breaking up GC-Classic runs in time; and flexible precision in HEMCO Lizzie Lundgren (Harvard) Structural
Limit allocation of State_Met to what is needed per simulation Melissa Sulprizio (Harvard) Structural
Using 3-D precipitation fluxes to calculate precipitation formation and re-evaporation in scavenging (to be consistent with GEOS/GOCART & ground precipitation) Gan Luo (Albany)
Hongyu Liu (NIA/LaRC)
Bo Zhang (NIA/LaRC) 		Wet deposition

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
Modal aerosol model (MAM7) in GCHP Shreya Sharma (MIT) Aerosols
Online OCIM ocean biogeochemistry Lee Murray (Rochester)
Hannah Horowitz (UIUC)
Chris Holmes (FSU) 		Chemistry
Perchlorate chemistry Yuk Chun Chan (UW) Chemistry
Non-stomatal dry deposition (2-layer canopy model) Michael Vermeuel (Purdue) Dry Deposition
Continental chloride particle emissions (salty dust, road salt) Jessica Haskins (Utah) Emissions
Multivolatility emission inventory to address gaps in EDGAR/HTAP etc. Ruochong (Tshingua) Emissions
Lightning NOx production rates Bex Horner (UCL) Emissions
HFO and CF3CHO Beth Killen (Wollongong)
Jenny Fisher (Wollongong) 		Chemistry
Glyoxal updates from isoprene Tzung-May Fu (SUSTech) Chemistry
Iodine chemistry Becky Alexander (UW)
Xuan Wang (CUHK) 		Chemistry
GFED5 biomass burning Eric Roy (MIT) Emissions
Ocean Hg surface concentrations for 2010-2020 from multi-model ensemble Eric Roy (MIT)
Ari Feinberg (IQF-CSIC) 		Hg simulation
Soil Hg emissions 2010-2020 Eric Roy (MIT)
Ari Feinberg (IQF-CSIC) 		Hg simulation
Air-sea exchange parameterization Eric Roy (MIT) Hg simulation
Soil Hg emissions parameterization Ari Feinberg (IQF-CSIC) Hg simulation
Sea salt uptake of GOM Eric Roy (MIT) Hg simulation
Photoreduction rate constant Eric Roy (MIT) Hg simulation
New observations (2010-2020) in standardized Hg benchmark for intercomparison Eric Roy (MIT)/Ari Feinberg (IQF-CSIC) Hg simulation
Hg simulation in GCHP Eric Roy (MIT) Hg simulation
OCIM - biogeochemical model - (C/P/N/Fe - no Hg yet) (MATLAB) Hannah Horowitz (UIUC) Hg simulation
Possibly updating Hg oxidation chemistry based on Utah field campaigns Jessica Haskins (Utah) Hg simulation
New halogen/aerosol fields (surface area / AOD) from 10-year 14.4 benchmark simulation available online Viral Shah (NASA GMAO); Eric Roy (MIT); Ari Feinberg (IQF-CSIC) Input data
Extend IMI to CO2 (ICI) Hannah Nesser (JPL) Inversions
Global emission inventory of metals Tzung-May Fu (SUSTech); He Zhong Tian (Peking Normal U) Metals simulation
Investigate and improve performance of aerosol chemistry Bob Yantosca (Harvard) Performance
PAH - update from version 11 Lexia Cicone (MIT) POPs simulation
Species database more accessible; doc updates; TOL discussion Jessica Haskins (Utah) Structural
Stretched-grid plotting in GCPy Killian Murphy (York) Tools
Model inter-comparison of transport (GEOS, GCHP, GCClassic) Lizzie Lundgren (Harvard), Emma Knowland (NASA) Transport
Comparing mass fluxes in GCHP vs. traditional lat/lon wind Yuanjian Zhang (WashU), Seb Eastham (ICL) Transport
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