Welcome to the ESA SMOS Online Dissemination Service

SMOS Logo





This service provides access to the free and open SMOS Level 1 and Level 2 Science data products, including those generated in Near Real Time, and to some higher-level products. Data is organized by collections.

The operational and reprocessed products part of the latest processing baseline (currently v6) can be openly searched and browsed for, following the guidelines described in the Help Page.

In order to download any products of interest, either via HTTP or FTP, please login with your own EO Sign In account.

Detailed information on the ESA's Soil Moisture and Ocean Salinity (SMOS) Earth Explorer Mission, on the relevant Product Format Specifications and data processing algorithms, can be found on the ESA Earth Online Portal.

Web Access:

You can search and browse for any SMOS products openly, from the "Collections" button at the top of this page, but you first need to be logged in in order to download files.

A Simple Online Catalogue allows for data navigation and selection by data type, acquisition date, geographical area (where available) and file format.

FTP Access:

SMOS products can also be downloaded from ftps://smos-diss.eo.esa.int, by using explicit FTPS (FTP over SSL/TLS) and your own EO Sign In credentials.

In addition to the Earth Explorer (EE) file format, L2 Soil Moisture (SM) and Ocean Salinity (OS) products are made available in NetCDF format under the relevant "_nc" subdirectories.

Note: If you are a secp user please update to latest version.


Service News

15/04/2021:Due to planned maintenance activities, this service might be discontinued on the 19th of April.

ESA has replaced the Single Sign On with a new Earth Observation Identity and Access Management system.

Existing active users have received an email to activate their new account to be used from now on.

Read more on New Registration Interface News.


For more details please refer to the online Help Page.

Should you need support please send an e-mail to smos.dissemination.support@esa.int


The access and use of SMOS products are regulated by the ESA's Data Policy and subject to the acceptance of the specific Terms & Conditions.
Users accessing SMOS products are intrinsically acknowledging and accepting the above.