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 collections maintenance - 27 September 2018

26 September 2018

Due to maintenance, the data collections on the ESA SMOS Online dissemination tool will be unavailable on Thursday 27 September 2018, from 09:00 to 11:00 CEST.

SMOS collections maintenance - 18 September 2018

17 September 2018

Due to maintenance, the data collections on the ESA SMOS Online dissemination tool will be unavailable on Tuesday 18 September 2018, from 09:00 to 12:00 CEST.

SMOS simplified data access

23 August 2018

SMOS online Science data are now freely available on the SMOS Online Dissemination Service, without needing to take additional registration steps to access the data.

Minimize Latest Mission Results News
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SMOS offers new perspective on hurricanes

25 September 2018

With recent stories in the news about the devastation brought by hurricanes and typhoons to the US and Asia, we are reminded of how important it is to predict the paths of these mighty storms and also learn more about how they develop. Many satellites have eyes on storms, but ESA's SMOS mission can offer an entirely new perspective.

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How much water is used for irrigation?

11 September 2018

Feeding a growing global population is a major concern, but efforts to grow more food will place an added burden on precious supplies of freshwater. New research shows how measurements of soil moisture from space could be used to understand how much water is used for agriculture and potentially help farmers manage consumption.

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World Water Week: ESA's role in easing water scarcity

27 August 2018

Water is crucial to life on Earth. But today, its overexploitation and pollution present challenges for the environment, economies and global living standards. These issues are addressed by the United Nations' Sustainable Development Goals (SDGs) and the annual World Water Week, which runs from 26-31 August 2018 in Stockholm.

Eight years of SMOS Arctic sea ice thickness level now available from SMOS Data dissemination portal

16 May 2018

Daily maps of sea ice thickness based on SMOS Observations, covering the winter seasons in the Arctic for the period of October-April from year 2010/2011 to year 2017/2018, are now available from the SMOS Data dissemination portal.