The access and use of Swarm products are regulated by ESA's Data Policy and subject to the acceptance of the specific Terms and Conditions.

In accordance with ESA Earth Observation Data Policy, all Swarm Level 1b and Level 2 collections are freely accessible to all users via anonymous access.

Files can be downloaded:

• Via any HTTP browser at http://swarm-diss.eo.esa.int
• Directly via an ftp client at ftp://swarm-diss.eo.esa.int

Data can also be accessed via the VirES service and Virtual Research Environment:

• Graphical interface
• Python client documentation
• Jupyter notebook service
• Heliophysics Application Programming Interface (HAPI).

Note that the Catalogue pages each contain direct links to the relevant data directory for the respective product.

The file server has a top-level structure divided into directories: “Advanced”, “Level1b”, “Level2daily”, “Level2longterm”, and ''Multimission”.

“Level1b” and “Level2daily” are each divided into “Latest_baselines” and “Entire_mission_data”. The structure is then divided according to product type, and then by satellite ID where applicable. For each directory there is a .txt file with the list of products available in the corresponding directory tree.

Further details can be found in the 'Swarm PDGS Data Access User Manual', and it is key to note that:

LATEST BASELINES FOLDER: Contains all the interoperable products generated in a consistent way with the application of all significant data quality improvements, but not necessarily covering the entire mission.

ENTIRE MISSION DATA FOLDER: Contains the full data coverage of the entire mission, regardless of any consideration of interoperability among the same product type.

For more information, see the Product format page in the Swarm Product Data Handbook.