Frequently asked questions about GEOS-Chem: Difference between revisions
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On this page we shall answer some commonly asked questions about GEOS-Chem. | On this page we shall answer some commonly asked questions about GEOS-Chem. | ||
== | == For new users == | ||
* [https://geos-chem.seas.harvard.edu/welcome.html I am a GEOS-Chem new user. What is expected of me?] | |||
* [https://geos-chem.seas.harvard.edu/ | |||
* [https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/related-docs.html Where can I find user manuals for GEOS-Chem and related software?] | * [https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/related-docs.html Where can I find user manuals for GEOS-Chem and related software?] | ||
* [http://cloud.geos-chem.org Can I use GEOS-Chem on cloud-computing platforms?] | * [http://cloud.geos-chem.org Can I use GEOS-Chem on cloud-computing platforms?] | ||
* [[ | * [[Guide to GEOS-Chem simulations|What types of simulations can I run with GEOS-Chem?]] | ||
* What is the [[GEOS-Chem horizontal grids|horizontal resolution]] and [[GEOS-Chem vertical grids|vertical resolution]] of GEOS-Chem? | * What is the [[GEOS-Chem horizontal grids|horizontal resolution]] and [[GEOS-Chem vertical grids|vertical resolution]] of GEOS-Chem? | ||
* [[Overview of GMAO met data products|Which meteorological data fields can be used by GEOS-Chem?]] | * [[Overview of GMAO met data products|Which meteorological data fields can be used by GEOS-Chem?]] | ||
* [ | * [https://geos-chem.readthedocs.io/en/latest/help-and-reference/SUPPORT.html To whom may I direct GEOS-Chem-related questions?] | ||
* [https:// | * [https://geoschem.github.io/steering-cmte.html What does the GEOS-Chem Steering Committee do?] | ||
* [https:// | * [https://geoschem.github.io/working-groups.html What do the GEOS-Chem Working Groups do?] | ||
* [ | * [https://geoschem.github.io/support-team What does the GEOS-Chem Support Team do?] | ||
* [ | * [https://geoschem.github.io/email-lists I see that there are several GEOS-Chem email lists. How can I subscribe?] | ||
== Science questions == | |||
Where can I find information about ... | Where can I find information about ... | ||
| Line 23: | Line 21: | ||
* [[Guide to GEOS-Chem simulations|types of GEOS-Chem simulations that I can run?]] | * [[Guide to GEOS-Chem simulations|types of GEOS-Chem simulations that I can run?]] | ||
* [[Bromine chemistry mechanism|bromine chemistry?]] | * [[Bromine chemistry mechanism|bromine chemistry?]] | ||
* [ | * [https://kpp.readthedocs.io The chemical solver used in GEOS-Chem?] | ||
* [[Linoz stratospheric ozone chemistry|the Linoz stratospheric ozone chemistry scheme?]] | * [[Linoz stratospheric ozone chemistry|the Linoz stratospheric ozone chemistry scheme?]] | ||
* [[Advection scheme TPCORE|the advection scheme in GEOS-Chem?]] | * [[Advection scheme TPCORE|the advection scheme in GEOS-Chem?]] | ||
* [[Boundary layer mixing|the boundary layer mixing schemes in GEOS-Chem?]] | * [[Boundary layer mixing|the boundary layer mixing schemes in GEOS-Chem?]] | ||
* [[Cloud convection|the cloud convection schemes in GEOS-Chem?]] | * [[Cloud convection|the cloud convection schemes in GEOS-Chem?]] | ||
* The [[Dry deposition]] and [[Wet deposition]] schemes in GEOS-Chem? | * The [[Dry deposition]] and [[Wet deposition]] schemes in GEOS-Chem? | ||
* [ | * [https://geos-chem.readthedocs.io/en/latest/supplemental-guides/nested-grid-guide.html GEOS-Chem nested grid simulations]? | ||
== Technical issues == | |||
* [https://geos-chem.readthedocs.io/en/latest/gcclassic-user-guide/get-code.html How do I download the GEOS-Chem source code] | |||
* [https://geos-chem.readthedocs.io/en/latest/gcclassic-user-guide/create-rundir.html How do I create run directories?] | |||
* [ | * [https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/error-guide.html What should I do when I encounter an error while running GEOS-Chem]? | ||
* [ | |||
* [https://github.com/geoschem/geos-chem/issues Is there a comprehensive list of GEOS-Chem bug reports?] | * [https://github.com/geoschem/geos-chem/issues Is there a comprehensive list of GEOS-Chem bug reports?] | ||
* Do you have any information on how I can [https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/debug-guide.html debug GEOS-Chem or HEMCO errors]? | * Do you have any information on how I can [https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/debug-guide.html debug GEOS-Chem or HEMCO errors]? | ||
== Parallelization issues == | |||
* [ | * [https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/parallel-guide.html#how-can-i-tell-what-should-go-into-the-omp-private-clause How can I tell if a variable has to be declared with <tt>!$OMP PRIVATE</tt> or <tt>!$OMP SHARED?</tt>] | ||
* [ | * [https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/parallel-guide.html#how-many-cores-may-i-use-for-geos-chem-or-hemco How many CPU cores may I use for my GEOS-Chem Classic simulation?] | ||
* [ | * [https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/parallel-guide.html#why-is-geos-chem-is-not-using-all-the-cores-i-requested Why is GEOS-Chem Classic not using all the CPU cores that I requested?] | ||
== High-Performance GEOS-Chem (GCHP) == | |||
Please see the GCHP user manual at [https://gchp.readthedocs.io <tt>gchp.readthedocs.io</tt>]for more information. | Please see the GCHP user manual at [https://gchp.readthedocs.io <tt>gchp.readthedocs.io</tt>]for more information. | ||
| Line 55: | Line 48: | ||
== Where can I get restart files for GEOS-Chem? == | == Where can I get restart files for GEOS-Chem? == | ||
For instructions on how to obtain a set of sample restart files that you can use to spin up your own simulations, [https://geos-chem.readthedocs.io/en/latest/ | For instructions on how to obtain a set of sample restart files that you can use to spin up your own simulations, [https://geos-chem.readthedocs.io/en/latest/gcclassic-user-guide/restart-files-gc.html#where-can-i-get-a-restart-file-for-my-simulation please visit this link]. | ||
== Running GEOS-Chem == | == Running GEOS-Chem == | ||
Please see | Please see the [https://geos-chem.readthedocs.io/en/latest/gcclassic-user-guide/run.html Run your simulation] section of [https://geos-chem.readthedocs.io <tt>geos-chem.readthedocs.io.</tt>]. for more information. | ||
There are several ways to [https://geos-chem.readthedocs.io/en/latest/gcc-guide/05-run/run-speedup.html speed up a slow GEOS-Chem simulation]. If you are archiving many diagnostic quantities are a high temporal resolution (e.g. every hour), then this will increase the run time of your simulation. You can try saving out less diagnostic quantities, or archiving at a lower temporal resolution (e.g. every day). | |||
Latest revision as of 17:02, 23 May 2024
On this page we shall answer some commonly asked questions about GEOS-Chem.
For new users
- I am a GEOS-Chem new user. What is expected of me?
- Where can I find user manuals for GEOS-Chem and related software?
- Can I use GEOS-Chem on cloud-computing platforms?
- What types of simulations can I run with GEOS-Chem?
- What is the horizontal resolution and vertical resolution of GEOS-Chem?
- Which meteorological data fields can be used by GEOS-Chem?
- To whom may I direct GEOS-Chem-related questions?
- What does the GEOS-Chem Steering Committee do?
- What do the GEOS-Chem Working Groups do?
- What does the GEOS-Chem Support Team do?
- I see that there are several GEOS-Chem email lists. How can I subscribe?
Science questions
Where can I find information about ...
- types of GEOS-Chem simulations that I can run?
- bromine chemistry?
- The chemical solver used in GEOS-Chem?
- the Linoz stratospheric ozone chemistry scheme?
- the advection scheme in GEOS-Chem?
- the boundary layer mixing schemes in GEOS-Chem?
- the cloud convection schemes in GEOS-Chem?
- The Dry deposition and Wet deposition schemes in GEOS-Chem?
- GEOS-Chem nested grid simulations?
Technical issues
- How do I download the GEOS-Chem source code
- How do I create run directories?
- What should I do when I encounter an error while running GEOS-Chem?
- Is there a comprehensive list of GEOS-Chem bug reports?
- Do you have any information on how I can debug GEOS-Chem or HEMCO errors?
Parallelization issues
- How can I tell if a variable has to be declared with !$OMP PRIVATE or !$OMP SHARED?
- How many CPU cores may I use for my GEOS-Chem Classic simulation?
- Why is GEOS-Chem Classic not using all the CPU cores that I requested?
High-Performance GEOS-Chem (GCHP)
Please see the GCHP user manual at gchp.readthedocs.iofor more information.
Where can I get restart files for GEOS-Chem?
For instructions on how to obtain a set of sample restart files that you can use to spin up your own simulations, please visit this link.
Running GEOS-Chem
Please see the Run your simulation section of geos-chem.readthedocs.io.. for more information.
There are several ways to speed up a slow GEOS-Chem simulation. If you are archiving many diagnostic quantities are a high temporal resolution (e.g. every hour), then this will increase the run time of your simulation. You can try saving out less diagnostic quantities, or archiving at a lower temporal resolution (e.g. every day).