ESA title

The mission

Carrying a suite of cutting-edge instruments, Copernicus Sentinel-3 measures systematically Earth’s oceans, land, ice and atmosphere to monitor and understand large-scale global dynamics. It provides essential information in near-real time for ocean and weather forecasting.

The launch

Date: Sentinel-3A on 16 February 2016
          Sentinel-3B on 25 April 2018
          Sentinel-3C in 2026
Site: Sentinel-3A and -B from Plesetsk Cosmodrome, Russia
         Sentinel-3C from Europe's Spaceport, French Guiana
Launcher: Sentinel-3A and -B on Rockot
                  Sentinel-3C on Vega-C

Sentinel-3
Sea state
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Satellites reveal the power of ocean swell

08/10/2025 5102 views 57 likes
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Iberian fires August 2025
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Iberian wildfires seen from space

20/08/2025 10982 views 64 likes
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Trends in Arctic sea ice thickness from 2011–2025
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Sea ice lows high on the agenda

24/06/2025 1745 views 22 likes
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Global sea surface temperature
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Sea surface warming faster than expected

17/04/2025 6716 views 59 likes
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Protecting areas of the Atlantic Ocean from human activity
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Protecting ocean biodiversity with satellite data

15/04/2025 1992 views 31 likes
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Adriatic Bloom
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How marine heatwaves impact phytoplankton and ocean health

31/10/2024 2058 views 33 likes
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Arctic diatoms
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Will climate change turn the Arctic green?

18/06/2024 3316 views 10 likes
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Smoke from fires in Canada
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Canada’s wildfire season begins

16/05/2024 2690 views 13 likes
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Full Earth disc from the Meteosat Third Generation Imager
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10 ways Earth is interconnected

22/04/2024 4602 views 17 likes
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Sentinel-5P detected methane plumes
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Trio of Sentinel satellites map methane super-emitters

20/09/2023 38866 views 151 likes
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Worldwide fires from ESA’s World Fire Atlas
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Counting wildfires across the globe

03/08/2023 40197 views 105 likes
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Heatwave across Europe
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Europe braces for sweltering July

13/07/2023 109341 views 213 likes
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Sea-surface temperature January to mid-May 2023
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Our oceans are in hot water

17/05/2023 10701 views 107 likes
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France and Spain land-surface temperature
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Feeling the heat from space

20/07/2022 13926 views 139 likes
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Greenland ice sheet melt
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Historic Greenland ice sheet rainfall unravelled

25/05/2022 8205 views 113 likes
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A-68A’s position on 17 December
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Mega iceberg released 152 billion tonnes of freshwater

20/01/2022 11647 views 82 likes
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Baltic Sea from Copernicus Sentinel-3
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New satellite data techniques reveal coastal sea-level rise

07/07/2021 16063 views 112 likes
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Ocean acidification
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Satellites highlight a 30-year rise in ocean acidification

21/04/2021 8430 views 92 likes
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Mount Etna smoke plumes
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Satellites monitor Mount Etna’s unpredictable behaviour

08/04/2021 18198 views 102 likes
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A-68A and A-68G
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Is this the end of the A-68A iceberg?

03/02/2021 20559 views 102 likes
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Wetlands
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Earth observation vital in monitoring wetland waters

02/02/2021 6428 views 89 likes
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Area burned by fire in August 2019
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New long-term dataset to analyse global fire trends

26/01/2021 7544 views 70 likes
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A-68A iceberg loses chunk of ice
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Giant A-68A iceberg loses chunk of ice

18/12/2020 11553 views 127 likes
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Start of Vendée Globe 2020
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Copernicus satellites keep eyes on icebergs for Vendée Globe

02/12/2020 5189 views 51 likes
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Between fire and hurricane
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US West Coast on fire

18/09/2020 8429 views 84 likes
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Industrial emissions of carbon dioxide fuel our warming climate
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Providing the facts to help Europe achieve 55%

16/09/2020 3780 views 48 likes
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Captured on 11 August by the Copernicus Sentinel-3 mission, this image shows Eureka in the Canadian territory of Nunavut.
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Monitoring the Arctic heatwave

27/08/2020 7143 views 115 likes
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Working on Copernicus Sentinel-6 Michael Freilich
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Building satellites amid COVID-19

04/05/2020 4433 views 53 likes
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Burned area near Chernobyl site
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Mapping Chernobyl fires from space

16/04/2020 19681 views 90 likes
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Water management key for sustainable agriculture
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Satellites and machine learning for water management

09/04/2020 10679 views 87 likes
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Smoke over New South Wales, Australia, from Copernicus Sentinel-3
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Australia: like a furnace

09/01/2020 14645 views 140 likes
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Fires around the world
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Is Earth on fire?

25/10/2019 24043 views 110 likes
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Sea roughness key to carbon flux
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Can oceans turn the tide on the climate crisis?

08/10/2019 11758 views 217 likes
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Wildfires in Brazil
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Fires ravage the Amazon

27/08/2019 17007 views 146 likes
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Sargassum in Guadeloupe
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Washed up: Sargassum blankets beaches

30/07/2019 12773 views 126 likes
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Ice streams named
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Antarctic glaciers named after satellites

07/06/2019 5209 views 60 likes
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Greenland snow grain and albedo
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Snow grain size – it matters

29/05/2019 7067 views 89 likes
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Floods imaged by Copernicus Sentinel-1
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Copernicus Sentinel-1 maps floods in wake of Idai

20/03/2019 14358 views 111 likes
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Cloud-free Europe
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New observations for the new economy

08/03/2019 10655 views 89 likes
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Losing ice
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Greenland ice loss quickening

06/12/2018 8317 views 131 likes
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Regional sea-level trends
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Spotlight on sea-level rise

25/09/2018 16161 views 97 likes
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Lake Maggiore and Baveno
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Copernicus 20 years on

21/06/2018 6059 views 93 likes
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Tandem in images
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Sentinel-3 flies tandem

19/06/2018 9067 views 109 likes
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Antarctic sunset from Sentinel-3B
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Copernicus Sentinel-3B delivers first images

09/05/2018 23066 views 154 likes
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Applications

Seventh Sentinel satellite launched for Copernicus

25/04/2018 12184 views 86 likes
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Enabling & Support

ESA teams ready for space

24/04/2018 4577 views 61 likes
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Into the tower
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Sentinel-3B on launch pad

23/04/2018 8853 views 77 likes
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Fuelling Sentinel-3B
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Sentinel-3B fully tanked

13/04/2018 2967 views 37 likes
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Unveiling Sentinel-3B
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Sentinel-3B launch preparations in full swing

23/03/2018 7494 views 65 likes
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Applications

Safeguarding our most precious resource: water

22/03/2018 7502 views 101 likes
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