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Revision as of 20:25, 18 April 2024
On this page we list the current priorities for GEOS-Chem development. This list is continuously updated based on code readiness and input from the Working Groups and the Steering Committee. For history of past releases see the GEOS-Chem Versions wiki page.
Contents
Merged and awaiting release
See the links below for items merged and awaiting release.
| Mergeable at any time | Version in development |
|---|---|
| GEOS-Chem no-diff-to-benchmark | GEOS-Chem 14.4.0 |
Feature integration in progress
Features listed in this table are actively being integrated into GEOS-Chem by the GEOS-Chem Support Team. In addition, we continuously implement structural updates in the model to maintain and develop coupling with other models including GEOS, CESM, and the model adjoint.
| Feature | Contributor(s) | Model scope | Ease of implementation | Notes and References |
|---|---|---|---|---|
| Global continental chlorine (pCl and HCl) emissions | Bingqing Zhang (Georgia Tech) Pengfei Liu (Georgia Tech) |
Emissions | Simple | |
| Parameterization of SNA and OM dry size | Haihui Zhu (WashU) | Aerosols | Medium | |
| New soil NOx parameterization | Yi Wang (U. Iowa) Jun Wang (U. Iowa) |
Emissions | Medium |
|
| Remove differences in GC-Classic due to HEMCO reading REAL8 restart as REAL4 | Lizzie Lundgren (Harvard) | GC-Classic | Medium | |
| Replace ISORROPIA with HETPv1.0 | Lizzie Lundgren (Harvard) Seb Eastham (ICL) |
Aerosol thermodynamics | Medium | |
| Only convert units for species that need it | Bob Yantosca (Harvard) | Unit conversions | Medium | |
| Capture all trop and PBL height changes in budget diagnostics | Chris Holmes (FSU) Lizzie Lundgren (Harvard) |
Diagnostics | Medium |
Prioritized and in the queue
Features listed in this table are prioritized for integration into GEOS-Chem in the near future.
| Feature | Contributor(s) | Model scope | Ease of implementation | Delivery status | Notes and References |
|---|---|---|---|---|---|
| ALK4 & R4N2 chemistry | Jared Brewer (UMN) | Chemistry | TBD | Not delivered | |
| Mass flux regridding fix in MAPL | Tom Clune (GMAO) Seb Eastham (MIT) |
GCHP input regridding | Medium |
| |
| New version of CEDS at 0.1 deg | Dandan Zhang (WashU) | Emissions | Simple | Delivered |
|
Ready to go in
Features listed in this table are ready to go in but have either not been delivered or are not yet prioritized for integration into GEOS-Chem.
| Feature | Contributor(s) | Model scope | Delivery status | Notes and References |
|---|---|---|---|---|
| KORUS-AQ emissions for East Asia (as an option) | Katie Travis (NASA) | Emissions | Simple | |
| Geologic emission of ethane and propane | Matthew Rowlinson and Mat Evans(York) | Emissions | Delivered Jan 2023 |
|
| Ecophysiology module in GEOS-Chem for biosphere-atmosphere exchange | Joey Lam(CUHK) Amos Tai (CUHK) |
Science | Delivered Feb 2021 |
|
| LPJ land cover (global), fire (W US), dust emissions (SW N America), 1700-2100 | Yang Li (Baylor University) Loretta Mickley (Harvard) |
Emissions | Delivered Jul 2021 |
|
| DMS Chemistry | Linia Tashmim (UC Riverside) William Porter (UC Riverside) |
Chemistry | Not delivered | |
| Organic acids (RCOOH) | Katie Travis (NASA) | Chemistry | Not delivered | |
| Improve carbon & nitrogen conservation in reactions | Kelvin Bates (Harvard) | Chemistry | Not delivered | |
| Blowing snow sea salt in TOMAS | Betty Croft (Dalhousie) | Aerosols | Not delivered | |
| Australian anthropogenic Hg emissions | Stephen MacFarlane (UOW) Jenny Fisher (UOW) Hannah Horowitz (U. Illinois) Viral Shah (Harvard) |
Hg simulation | Not delivered | |
| WRF-GC Hg simulation | Xiaotian Xu (Nanjing U.) Yanxu Zhang (Nanjing U.) |
Hg simulation WRF-GC |
Not delivered | |
| Updated HgII gas-partical partitioning | Kaiyun Liu (Tsinghua U.) Qingru Wu (Tsinghua U.) Shuxiao Wang (Tsinghua U.) |
Hg simulation | Not delivered |
|
| Dry deposition to F90 (readability) | Chris Holmes (FSU) | Dry deposition | Not delivered |
Almost there (< 6 months)
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team within the next 6 months.
| Feature | Contributor(s) | Model scope | Notes and References |
|---|---|---|---|
| PPN+hv, PPN+OH | Robert Ryan (UCL) | Chemistry | |
| MBO | Michael Vermeuel (UMN) | Chemistry | |
| Initial conditions for CH4 correcting background and stratospheric biases | Todd Mooring (Harvard) | Methane simulation | |
| Migrating simple SOA formation from carbon_mod.F90 into the KPP "full-chemistry" mechanism | Bob Yantosca (Harvard) | Aerosols Structural |
|
| Re-binning of off-line sea salt and dust for use in TOMAS | Betty Croft (Dalhousie) | Aerosols | |
| Adaption of TOMAS' in-cloud aqueous sulfate production for KPP versus sulfate_mod.F90 | Betty Croft (Dalhousie) | Aerosols | |
| ML algorithms for bulk aerosols | Arshad Nair (SUNY Albany) Fangqun Yu (SUNY Albany) |
Aerosols | |
| PM2.5 and PM10 calculations: aerodynamic vs geometric diameters | Shixian Zhai (Harvard) | Aerosols | |
| Updates to Hodzic SOA scheme | Jared Brewer (Harvard) | Aerosols | |
| Automated reduction in isoprene scheme | Dan Westervelt (Lamont-Doherty) | Aerosols | |
| Brown carbon chemsitry | Jingqiu Mao (U. Alaska) Xuan Wang (CUHK) |
Aerosols | |
| GEOS resolution and subgrid convection - Part 2 RAS parameter tuning | Tailong He (Toronto) Dylan Jones (Toronto) Andrea Molod (NASA GMAO) |
Convection | |
| High-res top-down TROPOMI-derived seasonal mean NOx emissions for China | Jintai Lin (PKU) | Emissions |
|
| Updated biomass burning emission factors and species | Tess Carter (MIT) | Emissions | |
| Updated offline sea salt emissions | Hongjian Weng (PKU) Jintai Lin (PKU) |
Emissions | |
| Canopy Physics Model | Sam Silva (MIT) | Emissions & Science |
|
| Assessment/improvement of OpenMP performance in GC-Classic and HEMCO standalone | Bob Yantosca (Harvard) | Model performance |
|
| Retire all BPCH diagnostics | Bob Yantosca (Harvard) | Diagnostics |
|
| Assess memory leak in GCHP | Killian Murphy (York) | Model performance |
|
| Hybrid MPI-OpenMP in GCHP | Seb Eastham (MIT) Killian Murphy (York) |
Model performance | |
| Improve run directory templating and creation with init_rd.sh and shared directories | Jourdan He (WashU) | Run directories | |
| Table of CTM and online GCM properties: GCHP, GCC, GEOS-CTM, GC-Nested, online GEOS, GEOS-replay, etc | GCST? | Documentation |
Over the horizon (6-12 months)
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 6-12 months timeframe.
| Feature | Contributor(s) | Model scope | Notes and References |
|---|---|---|---|
| Snow / Icy Bromine | Becky Alexander (UW) William Swanson (U. Alaska) Shuting Zhai (UW) |
Chemistry | |
| Monoterpene oxidation scheme | Jessica Haskins (MIT) | Chemistry | |
| Fire related VOCs including furans | Lu Hu (UMT) Lixu Jin (UMT) |
Chemistry | |
| Extension of UCX into the mesosphere | Seb Eastham (MIT) Eric Fleming (NASA) |
Chemistry | |
| Methane flux ingestion | Eloise Marais (UCL) | Chemistry | |
| Dust non-sphericity impacts on surface chem and optical properties | Inderjeet Singh (WashU) | Aerosols | |
| Size-resolved stratospheric aerosol | Seb Eastham (MIT) | Aerosols | |
| Extend aerosol settling | Eloise Marais (UCL) | Aerosols | |
| Stratospheric aerosol APM | Fangqun Yu (SUNY) | Aerosols | |
| Plume-in-grid model | Hongwei Sun (Harvard) | Chemistry | |
| Updated lightning NOx: Prescribe from ground and geostationary lightning flashes | Lee Murray (Rochester) | Emissions | |
| Seb aircraft emissions beyond recent 2019 update | Seb Eastham (MIT) | Emissions | |
| FRP-based fire emsisions for eastern US at 0.2 deg | Charlie Fite (FSU) | Emissions | |
| Hg iodine chemistry | Yiming Fu Yanxu Zhang (Nanjing U.) |
Hg simulation | |
| Hg simulation in GCHP | Ari Feinberg (MIT) Lyssa Freese (MIT) |
Hg simulation | |
| Update Hg ocean and soil boundary conditions for consistency with new chemistry | Yanxu Zhang (Nanjing U.) | Hg simulation | |
| Dry deposition diagnostics by land cover | Holly Nowell (FSU) | Diagnostics | |
| Dry deposition process diagnostics | Holly Nowell (FSU) | Diagnostics | |
| Isotope simulation for CO and CH4 in GCHP | Lee Murray (Rochester) | Carbon simulation | |
| Updated bottom-up global CH4 oil, gas, and coal emissions (GFEI v3) | Melissa Sulprizio (Harvard) Tia Scarpelli (U. Edinburgh) Zichong Chen (Harvard) |
Emissions CH4 simulation |
|
| Modularization of aerosols code for interface with GOCART in GEOS | Christoph Keller (GMAO) | Structural | |
| Improve load balancing in GCHP | Seb Eastham (MIT) | Model performance | |
| Testing the use of monthly mean MERRA-2 CWC with Pb-210 aerosol tracer | Bo Zhang (NIA) Hongyu Liu (NIA / NASA Langley) |
Transport | |
| Testing the use of a new scavenging parameterization developed by Luo and Yu for cold cloud with Pb-210 aerosol tracer | Gan Luo (SUNY Albany) Fangqun Yu (SUNY-Albany) |
Transport | |
| Evaluate vertical mixing in GEOS-Chem with model-model and model-observation comparisons | Seb Eastham (MIT) Clara Orbe (NASA GISS) Andrew Schuh (CSU) |
Transport |
Longer term (12-24 months)
Features listed in this table are in development and will likely be delivered to the GEOS-Chem Support Team in the 12-24 months timeframe.
| Feature | Contributor(s) | Model scope | Notes and References |
|---|---|---|---|
| Updates to Aromatic chemistry | Stephen MacFarlane (UOW) Jenny Fisher (UOW) |
Chemistry | |
| Nitrate photolysis | Mat Evans (York) Thomas Sherwen (York) Matthew Rowlinson (York) |
Chemistry | |
| In aerosol chemistry Halogens | Mat Evans (York) Hansen Cao (CU Boulder) |
Chemistry | |
| Benchmark box model of GC Chemistry | Katie Travis (NASA) | Chemistry | |
| Alkyl nitrates Alk7, PHAN | Katie Travis (NASA) | Chemistry | |
| Add stratospheric ozone species to full-chemistry simulations | Lee Murray (Rochester) | Chemistry | |
| Perchlorate chemistry | Yuk Chun Chan (UWAB) | Chemistry | |
| Explicit heterogeneous sulfate chemistry | Katie Travis (NASA) Becky Alexander (UT) |
Chemistry | |
| HOx and ozone "emissions" from lightning as option in model to play with | Jingqiu (Alaska) Lee Murray (Rochester) |
Emissions | |
| Sea salt aerosol from sea ice leads | Hannah Horowitz (U. Illinois) | Emissions | |
| Drought-stress algorithm | Wei Li (U. Houston) | ||
| Biomass burning injection height profiles | Inderjeet Singh (WashU) | Emissions | |
| OCIM integration | Chris Holmes (FSU) Lee Murray (Rochester) |
||
| Updating landcover products in GEOS-Chem | Chris Holmes (FSU) Jeff Geddes (BU) |
Input data | |
| Dry deposition physical improvement | Chris Holmes (FSU) | Dry deposition | |
| TOMAS WRF-GC in regional Thailand simulation | Win Trivitayanurak (Chulalongkorn U) | Aerosols |
