Minimize What is SMOS?
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ESA's Soil Moisture Ocean Salinity (SMOS) Earth Explorer mission is a radio telescope in orbit, but pointing back to Earth not space. It's Microwave Imaging Radiometer using Aperture Synthesis (MIRAS) radiometer picks up faint microwave emissions from Earth's surface to map levels of land soil moisture and ocean salinity.

These are the key geophysical parameters, soil moisture for hydrology studies and salinity for enhanced understanding of ocean circulation, both vital for climate change models.

Minimize Latest Mission Operations News

SMOS level 1 and 2 data products: Short period of degraded data

29 June 2015

ESA would like to inform SMOS data users about a short period of degradation in the level 1 and level 2 operational data set (OPER file class). The degradation was due to the presence of a strong Radio Frequency Interference (RFI) during the Noise Injection Radiometer (NIR) calibration executed on 3 June 2015 that has adversely impacted the computation of the calibration parameters.

Entire SMOS level 1 V620 dataset now available

29 June 2015

ESA would like to inform the SMOS data users that the level 1 catch-up reprocessing (see the previous news on SMOS V620 data reprocessing) has now been completed.

The entire Level 1 V620 data set is now available as REPR file class through the standard user interfaces and covers the period from 12 January 2010 to 9 May 2015.

Successful deployment of the new SMOS level 1 and level 2 algorithm baseline V620 in the operational processing

07 May 2015

ESA would like to inform SMOS data users about the successful deployment of the new level 1 processor version 620, the new level 2 sea surface salinity processor version 622 and the new level 2 soil moisture processor version 620 in the operational ground segment.

Minimize Latest Mission Results News
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SMOS meets ocean monsters

30 September 2015

ESA's SMOS and two other satellites are together providing insight into how surface winds evolve under tropical storm clouds in the Pacific Ocean. This new information could help to predict extreme weather at sea.

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SMOS sings the song of ice and fire

02 July 2015

While ESA's water mission continues to deliver key information on soil moisture and ocean salinity to advance our understanding of Earth, it is becoming increasingly important for 'real world' applications, further demonstrating the societal benefit of Earth observation.

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Join the virtual classroom

04 May 2015

Registration is open for a free online course that provides an introduction to monitoring climate change using satellite Earth observation.

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SMOS on acid

17 February 2015

With fundamental changes happening to the chemistry of the world's oceans, salinity information from ESA's SMOS mission is being used with other Earth observation data to obtain information on 'the other carbon dioxide problem' - ocean acidification.