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 nominal production resumed on 16 November 2017

17 November 2017

The SMOS nominal production has resumed after the successful deployment of the new L2SM v650 processor.

SMOS nominal production delayed on 15 November 2017

15 November 2017

Due to the operational deployment of the new L2SM v650 processor, SMOS nominal production will be delayed on 15 November 2017. Production is expected to be fully reestablished on 16 November.

Full reprocessed SMOS Level 2 sea surface salinity dataset now available

20 July 2017

ESA would like to inform the SMOS data users that the full reprocessed SMOS level 2 sea surface salinity dataset is now available on the SMOS data dissemination service. Following the reprocessing that finished in May 2017 a "gap-filling" reprocessing was performed to align to the operational product start.

Minimize Latest Mission Results News
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Nearly four decades of soil moisture data now available

03 November 2017

A new, long-term and global dataset of soil moisture measurements from space has been released to help us better understand the water cycle and climate, monitor agriculture and manage our water resources.

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Taking farming into the space age

01 August 2017

Satellites such as Europe's Copernicus Sentinel missions and ESA's SMOS and the upcoming Florescence Explorer, FLEX, provide a wealth of information about growing conditions and crop health that can be used to improve agricultural efficiency.

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DOMEX-3 2016 campaign data now available for Cal/Val users

25 July 2017

In-situ DOMEX-3 measurements for 2016 are now available for Cal/Val users along with the yearly campaign report. The measurements were acquired over the Antarctic plateau close to the Concordia base by tower based L-Band radiometer and by on-ground sensors for snow properties.

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Satellites forewarn of locust plagues

13 June 2017

Satellites are helping to predict favourable conditions for desert locusts to swarm, which poses a threat to agricultural production and, subsequently, livelihoods and food security.