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  • News - Events and Proceedings

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    ESA invites scientists to submit abstracts for EGU 2023

    ESA is calling for researchers to submit abstracts for sessions at the next General Assembly of the European Geosciences Union (EGU 2023).

  • News - Thematic area articles

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    Satellites investigate Earth’s terrestrial hydrosphere

    ESA’s Earth observation satellites are playing a leading role in furthering our understanding of how Earth’s water cycle is being influenced by humankind

  • News - Thematic area articles

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    Satellites reveal changes to Earth’s icy zones

    ESA’s Earth observation activities are helping scientists investigate the influence of climate change on widespread ice-losses across the planet.

  • Event - Training

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    EO Summer School 3

    ESA's series of summer schools, on Monitoring of the Earth System, aims to promote the exploitation of Earth observation data.

  • News - Thematic area articles

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    Transforming space data into climate action

    ESA’s Earth observation activities are playing a key role in the revitalised global drive to combat climate change.

  • News - Thematic area articles

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    Satellite data central to ocean monitoring

    Over 95% of Earth’s water is found in our oceans, and yet sadly, oceans are under stress from climate change and pollution. Monitoring our oceans is vital for Earth’s survival and satellites are the primary means of long-term and independent observation of our vast ocean bodies and their associated coastal zones.

  • News - Data Release news

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    SMOS L2 Sea Surface Salinity products documentation updates

    SMOS L2 Sea Surface Salinity product validation report is now available.

  • News - Data Release news

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    SMOS sea ice thickness Arctic winter season 2021/2022 data available

    SMOS Sea Ice thickness level 3 and level 4 data products are now available for the Arctic winter season 2021/2022.

  • News - Data Release news

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

    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.

  • News - Data Release news

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    SMOS level 1 and level 2 products new baseline is now available

    New versions of the SMOS processors for level 1 and 2 were deployed in the operational ground segment on 25 May 2021.

  • Event - Workshop

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    Understanding the Carbon and Water Cycles using SMOS Data and Models

    The workshop aimed to bring together the EO, SMOS, Earth system science and modelling communities involved in the observation, characterisation and forecasting of land surface processes and their impacts.

  • Document - General Reference

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    SMOS Multimedia Book

    Learn more about ESA's SMOS mission in the interactive SMOS Multimedia Book.

  • Data - Data Description

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    SMOS - CryoSat L4 Sea Ice Thickness

    The SMOS-CryoSat merged Sea Ice Thickness Level 4 product, in NetCDF format, is based on estimates from both the MIRAS and the SIRAL instruments with a significant reduction in the relative uncertainty for the thickness of the thin ice. A weekly averaged preliminary product is generated every day by the Alfred Wegener Institut (AWI) by merging the weekly CryoSat Sea Ice Thickness product and the daily SMOS Sea Ice Thickness retrieval. A final product is provided with a latency of about 3-4 weeks using a different global sea ice concentration product and a reprocessed CryoSat product. All grids are projected onto the 25 km EASE2 Grid based on a polar aspect spherical Lambert azimuthal equal-area projection. The grid dimension is 5400 x 5400 km, equal to a 432 x 432 grid centered on the geographic Pole. Coverage is limited to the October-April (winter) period for the Northern Hemisphere, due to the melting season, from year 2010 onwards.

  • Data - Data Description

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    SMOS Soil Freeze and Thaw State

    The SMOS Level 3 Freeze and Thaw (F/T) product provides daily information on the soil state in the Northern Hemisphere based on SMOS observations and associated ancillary data. Daily products, in NetCDF format, are generated by the Finnish Meteorological Institute (FMI) and are available from 2010 onwards. The processing algorithm makes use of gridded Level 3 brightness temperatures provided by CATDS. The data is provided in the Equal-Area Scalable Earth Grid (EASE2-Grid), at 25 km x 25 km resolution. For an optimal exploitation of this dataset, please refer to the Resources section below to access Product Specifications, read-me-first notes, etc.

  • News - General News

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    New Earth Online Newsletter

    Stay up to date with the latest news in our newsletter.

  • Data - Data Description

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    SMOS L3 Sea Ice Thickness

    The SMOS Level 3 Sea Ice Thickness product, in NetCDF format, provides daily estimations of SMOS-retrieved sea ice thickness (and its uncertainty) at the edge of the Arctic Ocean during the October-April (winter) season, from year 2010 onwards. The sea ice thickness is retrieved from the SMOS L1C product, up to a depth of approximately 0.5-1 m, depending on the ice temperature and salinity. Daily maps, projected on polar stereographic grid of 12.5 km, are generated by the Alfred Wegener Institut (AWI). This product is complementary with sea ice thickness measurements from ESA's CryoSat and Copernicus Sentinel-3 missions.

  • Mission - Earth Explorers

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    SMOS

    The Soil Moisture and Ocean Salinity (SMOS) mission is dedicated to making global observations of soil moisture over land and salinity over oceans.

  • Tools - Visualisation

    SMOS Global Mapping Tool

    The SMOS Global Mapping Tool (GMT) is useful for plotting the SMOS data into a single global geographical map.

  • Tools - Processing

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    SMOS NetCDF Conversion Tool

    The SMOS NetCDF Conversion Tool, for batch processing of large amounts of files, is available as a stand-alone command line executable or integrated in the SMOS Toolbox/SNAP.

  • News - Success Stories

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    Mapping salty waters

    The length and precision with which climate scientists can track the salinity, or saltiness, of the oceans is set to improve dramatically.

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