Welcome to the ESA HM ATMOS Online Dissemination Service
This service provides access to the latest reprocessed ESA Heritage Missions Atmospheric data.
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30/07/2026
FDR4ATMOS collection:
The ATMOS__L1B dataset version 1.0 has been replaced by the reprocessed v1.1 containing an important bug fix.
Users are invited to download v1.1 and update any analyses to align with the latest version.
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Users can freely browse and search the available products while registration is needed on the ESA Earth Online Portal for data download.
Clicking on the Collections button, the web interface shows the list of available datasets and allows data navigation and selection by tree view, filename or by advanced catalogue search. In order to download any product of interest, please sign in or create an account using the Login button above.
FTPS access: The data from the ESA HM atmospheric collections can also be downloaded from ftps://hm-atmos-ds.eo.esa.int via common FTP clients using "implicit FTP over TLS" and your own ESA EO Sign In credential.
If you have not yet requested access to these data collections, visit the dataset description pages on the ESA Earth Online Portal.
Should you need support please contact the ESA EO Help Desk.