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:

  1. Initial conditions input data (aka Restart files)

  2. Chemistry input data

  3. Emissions input data

  4. Meteorology input data

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

Amazon

GEOS-Chem data on the Amazon cloud, s3://gcgrid

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

Globus, use endpoint GEOS-Chem data (WashU)

WashU

\(^1\) We provide InitialConditions.csv files (for each GEOS-Chem version since 13.0.0) at our input-data-catalogs Github repository.

Chemistry input data

Chemistry input data includes:

  • Quantum yields and cross sections for FAST-JX photolysis

  • 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 file \(^2\)

WashU

Direct data download (FTP or wget)

WashU Amazon Rochester

Globus, use endpoint GEOS-Chem data (WashU)

WashU

\(^2\) We provide ChemistryInputs.csv files (for each GEOS-Chem version since 13.0.0) at our input-data-catalogs Github repository.

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 \(^3\)

WashU

Direct data download (FTP or wget)

WashU Amazon Rochester

Globus, use endpoint GEOS-Chem data (WashU)

WashU

\(^3\) We provide EmissionsInputs.csv files (for each GEOS-Chem version since 13.0.0) at our input-data-catalogs Github repository.

Meteorology input data

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

  1. MERRA-2

  2. GEOS-FP

  3. GCAP 2.0

Download method

From portals

Dry run simulation

WashU Amazon Rochester

Run bashdatacatalog on the MeteorologyInputs.csv file \(^4\)

WashU

Direct data download (FTP or wget)

WashU Amazon Rochester

Globus, use endpoint GEOS-Chem data (WashU)

WashU

\(^4\) We provide a MeteorologyInputs.csv file at our input-data-catalogs Github repository.