GEOS-Chem High Performance¶
The GEOS–Chem model is a global 3-D model of atmospheric composition driven by assimilated meteorological observations 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.
This site provides instructions for GEOS-Chem High Performance, GEOS-Chem’s multi-node variant. We provide two different instruction sets for downloading and compiling GCHP: from a clone of the source code, or using the Spack package manager.
Cloning and building from source code ensures you will have direct access to the latest available versions of GCHP, provides additional compile-time options, and allows you to make your own modifications to GCHP’s source code. Spack automates downloading and additional parts of the compiling process while providing you with some standard togglable compile-time options.
Our Quick Start Guide and the downloading, compiling, and creating a run directory sections of the User Guide give instructions specifically for using a clone of the source code. Our dedicated Spack guide describes how to install GCHP and create a run directory with Spack, as well as how to use Spack to install GCHP’s dependencies if needed.
- Download the model
- Create a Run Directory
- Download Input Data
- Run the model
- Configuration files
- Configure a run
- Output Files
- Plot Output Data
- Load software into your environment
- Build required software with Spack
- Set up AWS ParallelCluster
- Cache Input Data on Fast Drives
- Use GCHP Containers
- Stretched-Grid Simulation
- Output Along a Track
- Manage a data archive with bashdatacatalog
- Customize simulations with research options
- Understand what error messages mean
- Debug GEOS-Chem and HEMCO errors
- View GEOS-Chem species properties
- Update chemical mechanisms with KPP
- View related documentation