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

Impact of ECMWF forecast cycle 41r2 on SMOS level 2 sea surface salinity and soil moisture products

22 March 2016

On 8 March 2016, ECMWF upgraded the integrated forecasting system (IFS). The new cycle, labelled 41r2 (previous cycle was labelled 41r1), includes a number of enhancements to the model, to the data assimilation and the increase of the horizontal resolution which is now about 9 km for the high-resolution (HRES) forecast and the data assimilation schema. For further details about this upgrade see the related ECMWF web-page.

SMOS soil moisture product in NRT based on neural network is now available

17 March 2016

A new level 2 soil moisture product generated in near real time (NRT) by using a neural network approach is now available. The product is disseminated, within four hours from sensing, in netCDF format on ESA's SMOS data portal from today onwards and will in future also be available through EUMETCAST and GTS (from April 2016 onwards). The Level 1 brightness temperature product available in NRT ("NRT light") is now also available on the data portal (already available from GTS/EUMETCAST since end 2011).

SMOS data planned unavailability on 14 March 2016

11 March 2016

Due to a planned SMOS on-board software update, the DPGS data production will be interrupted next Monday, 14 March 2016, from approximately 8:30 UTC.

Minimize Latest Mission Results News
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SMOS gets help from Tibet

29 January 2016

Ground measurements are essential for making sure that satellites deliver accurate information about our changing world. Although the Tibetan Plateau may not seem the obvious place to take such readings, this remote location is being used to check on ESA's SMOS satellite.

Experimental SMOS Sea Surface Salinity maps of the Mediterranean Sea

01 December 2015

ESA would like to inform the SMOS data user community about new experimental level 3 and level 4 sea surface salinity products over the Mediterranean Sea available from the SMOS Barcelona Expert Centre (SMOS-BEC, CP34).

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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.