Input data for GEOS-Chem Classic

GEOS-Chem Classic reads (via HEMCO) several data files from disk during a simulation. These can be grouped into the following categories:

Initial conditions input data (aka Restart files)
Chemistry input data
Emissions input data
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Data portals

Input data files for GEOS-Chem can be downloaded from one of the following portals:

WashU

The primary data portal for GEOS-Chem, geoschemdata.wustl.edu

The WashU data portal may be unavailable at times due to regularly-scheduled maintenance periods. Please check the WashU IT status page for more information.

Amazon: GEOS-Chem data on the Amazon cloud, s3://gcgrid. You can browse the contents of the data via the AWS S3 Explorer.

Note

Downloading from the Amazon Data Portal will NOT incur any egress charges. This is because the data is covered under the AWS Open Data Sponsorship Program.

Rochester: Portal for the GCAP 2.0 meteorological data files, atmos.earth.rochester.edu

Initial conditions input data

Initial conditions include:

Initial species concentrations (aka Restart files) used to start a GEOS-Chem simulation.

Download method	From portals
Dry run simulation	`WashU` `Amazon` `Rochester`
Run bashdatacatalog on the `InitialConditions.csv` file [1]	`WashU`
Direct data download (FTP or wget)	`WashU` `Amazon` `Rochester`
Direct data download (AWS S3 Explorer) [2]	`Amazon`
Globus, use endpoint GEOS-Chem data (WashU)	`WashU`

Notes

Chemistry input data

Chemistry input data includes:

Quantum yields and cross sections for photolysis using either Cloud-J or legacy FAST-JX
Climatology data for Linoz
Boundary conditions for UCX stratospheric chemistry routines

Download method	From portals
Dry run simulation	`WashU` `Amazon` `Rochester`
Run bashdatacatalog on the `ChemistryInputs.csv` [3]	`WashU`
Direct data download (FTP or wget)	`WashU` `Amazon` `Rochester`
Direct data download (AWS S3 Explorer) [2]	`Amazon`
Globus, use endpoint GEOS-Chem data (WashU)	`WashU`

Notes

Emissions input data

Emissions input data includes the following data:

Emissions inventories
Input data for HEMCO Extensions
Input data for GEOS-Chem specialty simulations
Scale factors
Mask definitions
Surface boundary conditions
Leaf area indices
Land cover map

Download method	From portals
Dry run simulation	`WashU` `Amazon` `Rochester`
Run bashdatacatalog on the `EmissionsInputs.csv` file [4]_	`WashU`
Direct data download (FTP or wget)	`WashU` `Amazon` `Rochester`
Direct data download (AWS S3 Explorer) [2]	`Amazon`
Globus, use endpoint GEOS-Chem data (WashU)	`WashU`

Notes

Meteorology input data

As described previously, GEOS-Chem Classic be driven by the following meteorology products:

Download method	From portals
Dry run simulation	`WashU` `Amazon` `Rochester`
Run bashdatacatalog on the `MeteorologyInputs.csv` file [5]_	`WashU`
Direct data download (FTP or wget)	`WashU` `Amazon` `Rochester`
Direct data download (AWS S3 Explorer) [2]	`Amazon`
Globus, use endpoint GEOS-Chem data (WashU)	`WashU`

Notes