GEOS-Chem
Advance understanding of human and natural influences on the environment through a comprehensive, state-of-the-science, readily accessible global model of atmospheric composition.
https://github.com/geoschem/geos-chem
Category: Atmosphere
Sub Category: Atmospheric Chemistry and Aerosol
Keywords
aerosols atmospheric-chemistry atmospheric-chemistry-modeling atmospheric-composition atmospheric-modelling aws bash-script carbon-cycle climate cloud-computing configuration earth-system-modeling fortran greenhouse-gases integration-tests mercury methane particulate-matter run-directory scientific-computing
Keywords from Contributors
geos-chem atmospheric-modeling hemco configuration-files regridding data-broker emissions masks scale-factors standalone
Last synced: about 15 hours ago
JSON representation
Repository metadata
GEOS-Chem "Science Codebase" repository. Contains GEOS-Chem science routines, run directory generation scripts, and interface code. This repository is used as a submodule within the GCClassic and GCHP wrappers, as well as in other modeling contexts (external ESMs).
- Host: GitHub
- URL: https://github.com/geoschem/geos-chem
- Owner: geoschem
- License: other
- Created: 2018-06-19T16:55:12.000Z (over 7 years ago)
- Default Branch: main
- Last Pushed: 2025-12-10T21:43:11.000Z (15 days ago)
- Last Synced: 2025-12-11T05:45:57.024Z (14 days ago)
- Topics: aerosols, atmospheric-chemistry, atmospheric-chemistry-modeling, atmospheric-composition, atmospheric-modelling, aws, bash-script, carbon-cycle, climate, cloud-computing, configuration, earth-system-modeling, fortran, greenhouse-gases, integration-tests, mercury, methane, particulate-matter, run-directory, scientific-computing
- Language: Fortran
- Homepage: http://geos-chem.org
- Size: 98.6 MB
- Stars: 216
- Watchers: 21
- Forks: 188
- Open Issues: 108
- Releases: 66
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE.txt
- Authors: AUTHORS.txt
- Zenodo: .zenodo.json
README.md
Description
This repository contains the GEOS-Chem science codebase. Included in this repository are:
- The source code for GEOS-Chem science routines;
- Scripts to create GEOS-Chem run directories;
- Template configuration files that specify run-time options;
- Scripts to run GEOS-Chem tests;
- Driver routines (e.g.
main.F90) that enable GEOS-Chem to be run in several different implementations (as GEOS-Chem "Classic", as GCHP, etc.)
Version 12.9.3 and prior
GEOS-Chem 12.9.3 was the last version in which this "Science Codebase" repository was used in a standalone manner.
Version 13.0.0 and later
GEOS-Chem 13.0.0 and later versions use this "Science Codebase" repository as a submodule within the GCClassic and GCHP repositories.
Releases for GEOS-Chem 13.0.0 and later versions will be issued at the GCClassic and GCHP Github repositories. We will also tag and release the corresponding versions at this repository for the sake of completeness.
User Manuals
Each implementation of GEOS-Chem has its own manual page. For more information, please see:
-
GEOS-Chem "Classic": https://geos-chem.readthedocs.io
-
WRF-GC: http://wrf.geos-chem.org
-
Other documentation: View related documentation @ Read TheDocs
About GEOS-Chem
GEOS-Chem is a global 3-D model of atmospheric chemistry driven by meteorological input from the Goddard Earth Observing System (GEOS) of the NASA Global Modeling and Assimilation Office. It is applied by research groups around the world to a wide range of atmospheric composition problems. Scientific direction of the model is provided by the international GEOS-Chem Steering Committee and by User Working Groups. The model is managed by the GEOS-Chem Support Team, based at Harvard University and Washington University with support from the US NASA Earth Science Division, the Canadian National and Engineering Research Council, and the Nanjing University of Information Sciences and Technology.
GEOS-Chem is a grass-roots open-access model owned by its users, and ownership implies some responsibilities as listed in our welcome page for new users.
Owner metadata
- Name: GEOS-Chem
- Login: geoschem
- Email: geos-chem-support@g.harvard.edu
- Kind: organization
- Description: The GEOS-Chem model of atmospheric chemistry and composition
- Website: http://www.geos-chem.org
- Location: International
- Twitter:
- Company:
- Icon url: https://avatars.githubusercontent.com/u/8321017?v=4
- Repositories: 51
- Last ynced at: 2024-03-19T10:10:16.778Z
- Profile URL: https://github.com/geoschem
GitHub Events
Total
- Create event: 134
- Commit comment event: 1
- Release event: 7
- Issues event: 610
- Watch event: 41
- Delete event: 103
- Issue comment event: 2159
- Push event: 316
- Pull request review event: 353
- Pull request review comment event: 285
- Pull request event: 224
- Fork event: 37
Last Year
- Create event: 134
- Commit comment event: 1
- Release event: 7
- Issues event: 610
- Watch event: 41
- Delete event: 103
- Issue comment event: 2159
- Push event: 316
- Pull request review event: 353
- Pull request review comment event: 285
- Pull request event: 224
- Fork event: 37
Committers metadata
Last synced: 4 days ago
Total Commits: 9,410
Total Committers: 203
Avg Commits per committer: 46.355
Development Distribution Score (DDS): 0.634
Commits in past year: 227
Committers in past year: 11
Avg Commits per committer in past year: 20.636
Development Distribution Score (DDS) in past year: 0.595
| Name | Commits | |
|---|---|---|
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| Melissa Sulprizio | m****r@s****u | 1688 |
| Lizzie Lundgren | e****n@s****u | 1472 |
| bmy | b****y | 323 |
| Christoph Keller | c****r@n****v | 157 |
| Christoph Keller | c****r@l****u | 157 |
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| Liam Bindle | l****e@g****m | 111 |
| Sebastian Eastham | s****m@f****u | 100 |
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| Thibaud Fritz | f****t@m****u | 92 |
| Christoph Keller | c****r@c****u | 90 |
| Salvatore Farina | s****a@g****m | 71 |
| David A Ridley | d****y@m****u | 70 |
| Liam Bindle | l****e@g****m | 51 |
| msl3v | m****g@s****u | 51 |
| Carey Friedman | c****f@s****) | 46 |
| Chris Holmes | c****s@u****u | 43 |
| Tomas Sherwen | t****n@y****k | 42 |
| Yuanjian Zhang | y****z@w****u | 41 |
| ccarouge | c****c@s****u | 36 |
| ccarouge | c****e | 35 |
| Ryan Pound | r****9@y****k | 35 |
| Jenny Fisher | j****f@u****u | 32 |
| Christoph Keller | c****r@p****u | 31 |
| Matthew Yannetti | m****i@s****u | 31 |
| Christopher Holmes | c****s@f****u | 30 |
| Colin Pike-Thackray | t****y@s****u | 28 |
| Will Downs | w****s@g****u | 28 |
| and 173 more... | ||
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Issue and Pull Request metadata
Last synced: 4 days ago
Total issues: 2,129
Total pull requests: 1,013
Average time to close issues: 2 months
Average time to close pull requests: 27 days
Total issue authors: 480
Total pull request authors: 64
Average comments per issue: 4.52
Average comments per pull request: 3.16
Merged pull request: 754
Bot issues: 0
Bot pull requests: 0
Past year issues: 276
Past year pull requests: 210
Past year average time to close issues: 21 days
Past year average time to close pull requests: 9 days
Past year issue authors: 125
Past year pull request authors: 16
Past year average comments per issue: 3.16
Past year average comments per pull request: 1.92
Past year merged pull request: 150
Past year bot issues: 0
Past year bot pull requests: 0
Top Issue Authors
- yantosca (192)
- msulprizio (131)
- lizziel (90)
- ChenBHXMU (44)
- jinlx (42)
- FeiYao-Edinburgh (42)
- yangning-code (40)
- ktravis213 (23)
- sdeastham (23)
- yangxiajie (23)
- JFBrewer (22)
- eamarais (22)
- LiamBindle (21)
- aschuh (21)
- rongbing0353 (20)
Top Pull Request Authors
- yantosca (337)
- lizziel (191)
- msulprizio (149)
- jimmielin (69)
- LiamBindle (34)
- yuanjianz (30)
- cdholmes (21)
- nicholasbalasus (18)
- sdeastham (16)
- ltmurray (11)
- tsherwen (9)
- Jourdan-He (8)
- msl3v (7)
- kaysuselj (7)
- 1Dandan (6)
Top Issue Labels
- bug (606)
- question (505)
- stale (315)
- category: Question (294)
- category: Bug (273)
- feature (180)
- data sources / I-O (168)
- config-files / rundir (155)
- HEMCO (133)
- topic: Input Data (102)
- never stale (101)
- diagnostics (99)
- KPP / chem mechanisms (82)
- category: Feature Request (70)
- category: Debug Help (69)
- topic: Runtime Error (68)
- topic: Diagnostics (60)
- nested grid simulation (59)
- topic: Emissions (56)
- topic: Chemical Mechanisms (56)
- need community input (54)
- topic: Configuration Files (54)
- research / science problem (52)
- specialty simulations (51)
- duplicate (47)
- topic: Aerosols (43)
- user environment (41)
- build (36)
- runtime (35)
- topic: Carbon Gases Simulations (34)
Top Pull Request Labels
- no-diff-to-benchmark (235)
- category: Bug Fix (197)
- category: Feature Request (174)
- feature (170)
- bug (116)
- config-files / rundir (88)
- topic: Configuration Files (68)
- KPP / chem mechanisms (66)
- bugfix (64)
- zero-diff (54)
- GCHP (53)
- topic: Carbon Gases Simulations (52)
- topic: Chemical Mechanisms (51)
- topic: Diagnostics (49)
- diagnostics (48)
- topic: Emissions (46)
- topic: Structural Modifications (35)
- never stale (32)
- specialty simulations (32)
- topic: GCHP (30)
- testing / benchmarking (26)
- topic: Run Directories (25)
- structural (24)
- topic: Aerosols (24)
- category: Interface to External Model (23)
- topic: Benchmarking and Testing (21)
- topic: Input Data (21)
- data sources / I-O (21)
- interface to external model (19)
- HEMCO (18)
Score: 11.093949494834117