GEOS-Chem Input Data on AWS cloud

The GEOS-Chem Input Data portal provides essential datasets for GEOS-Chem Classic, GCHP, and HEMCO. This includes NASA/GMAO MERRA-2 and GEOS-FP meteorological products, chemistry input data, emissions input data, and other smaller datasets such as model initial conditions. We will continuously upload and maintain the data in an S3 Bucket (s3://geos-chem) for convenient access.

We are pleased to announce that the GEOS-Chem Input Data portal is part of the AWS Open Data Sponsorship Program. As a result, the data is completely free to use. You will NOT incur any data egress fees when downloading data from the s3://geos-chem bucket. This is now the recommended repository for GEOS-Chem data download.

Note

Certain data are stored separately from the main GEOS-Chem Input Data portal:

• NASA/GMAO meteorology fields that have been cropped to the various nested grid domains may be downloaded from our GEOS-Chem Nested Input Data portal (aka s3://gcgrid).
  
  

• GCAP 2.0 meteorology fields for present & future scenarios may be downloaded from our GCAP 2.0 meteorology portal hosted at U. Rochester.

In the following chapters, we will describe how the GEOS-Chem Input Data portal is organized and how to access the data stored there.

• Why do we store GEOS-Chem data on the cloud?
  • Scalability
  • Accessibility
  • Performance
• The GEOS-Chem Input Data portal
  • Data organization
  • Data access
  • Example directory structure
• Tutorial: Accessing GEOS-Chem Input Data using AWS CLI
  • Install AWS CLI
  • Configure AWS CLI (if you already have an AWS account)
  • Access and download data
  • Run simulations using downloaded data