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Sentinel Online
@sentinelonline.bsky.social
79 followers 9 following 110 posts
Official profile of Sentinel Online, part of Copernicus, the European
Union’s Earth Observation programme, and developed in partnership with @esa.int
Posts Replies Media Videos
sentinelonline.bsky.social
On 7 May 2025, Copernicus Sentinel-3 captured a large Saharan dust plume stretching over 150 000 sq km of the Atlantic, with Cabo Verde visible beneath the clouds. 🛰️🌍 CREDIT: contains modified Copernicus Sentinel data (2025), processed by ESA
December 3, 2025 at 10:03 AM
sentinelonline.bsky.social
On Antarctica Day, #Sentinel-2 imagery highlights how remote emperor penguin colonies can be detected from space. They leave a visible signature on the ice, helping researchers track colonies in areas too difficult to access on the ground 🛰️
#SentinelOnline #ESA #EarthObservation
Satellite image of an Antarctic coastal ice shelf captured by Sentinel-2, showing rugged snow-covered terrain on the left and fragmented sea ice on the right. An inset highlights a smaller section of the ice. The overlaid graphic reads: “Who knew you could spot penguin colonies via satellite data? On Antarctica Day, Sentinel-2 imagery highlights how remote emperor penguin colonies can be detected from space.” Logos of the European Union, Copernicus, ESA, and Sentinel Online appear at the top. Satellite image of an Antarctic coastal ice shelf captured by Sentinel-2, showing rugged snow-covered terrain on the left and fragmented sea ice on the right. An inset highlights a smaller section of the ice. The overlaid graphic reads: “Who knew you could spot penguin colonies via satellite data? On Antarctica Day, Sentinel-2 imagery highlights how remote emperor penguin colonies can be detected from space.” Logos of the European Union, Copernicus, ESA, and Sentinel Online appear at the top.
December 1, 2025 at 10:02 AM
sentinelonline.bsky.social
#Sentinel-1D is now delivering its first radar images — including this impressive view of the Elbe River delta.
A brilliant milestone for #Copernicus and #European #EarthObservation.
Radar image of the Elbe River delta captured by Sentinel-1D, showing branching waterways, wetlands and coastal structures in high-contrast black-and-white detail. The synthetic aperture radar reveals surface patterns, land–water boundaries and textured landscapes not visible in optical imagery. CREDIT: Contains modified Copernicus Sentinel data (2025), processed by ESA.
November 28, 2025 at 10:02 AM
sentinelonline.bsky.social
A new method uniquely validates #Sentinel3 river altimetry by using off-nadir reflections that align directly with in-situ gauges, fixing a major slope-bias problem in narrow rivers.

🔗 sentinels.copernicus.eu/web/success-...
November 27, 2025 at 10:57 AM
sentinelonline.bsky.social
Did you know that #Sentinel-1 can see through clouds, detect subtle ground movements, and even track ships at sea?

#SentinelOnline #EarhtObservation #ESA #CopernicusEU
“Satellite radar image of a coastal region with text explaining that Sentinel-1 carries its own source of illumination. The text highlights that Sentinel-1 emits around 2000 radar flashes per second to create images, unlike optical satellites that rely on sunlight. Logos of the EU, Copernicus, ESA, and Sentinel Online appear at the top.” CREDIT: contains modified Copernicus Sentinel data (2023), processed by ESA “Radar image showing a swirling hurricane over the ocean. Text explains that Sentinel-1’s radar can see through clouds and hurricanes to measure sea-surface conditions and wind patterns, providing data to assess storms and support emergency response. Logos of the EU, Copernicus, ESA, and Sentinel Online appear at the top.” CREDIT : contains modified Copernicus Sentinel data (2024), processed by ESA “Radar-based map showing illuminated ship positions along the coasts of Tunisia and Sicily. Text explains that Sentinel-1C and 1D detect and identify ships using radar and the Automated Identification System (AIS), helping to spot illegal fishing, oil spills, and ‘dark ships’. Logos of the EU, Copernicus, ESA, and Sentinel Online appear at the top.” CREDIT : ESA (data source: Paolo et al., 2024/Global Fishing Watch) “Text on a teal background inviting viewers to visit sentinels.copernicus.eu to explore real-world success stories of Sentinel data. Logos of the EU, Copernicus, ESA, and Sentinel Online appear at the top.”
November 26, 2025 at 10:02 AM
sentinelonline.bsky.social
Copernicus #Sentinel3 captured Cyclone Errol as it approached Western #Australia. On 16 April, #Errol reached peak intensity with 285 km/h gusts and a distinct pinhole eye 🛰️🌍
#SentinelOnline #CopernicusEU #Sentinel3 #EarthObservation #ESA
November 25, 2025 at 10:08 AM
sentinelonline.bsky.social
The new Fuel Moisture Content (FMC) product uses #Sentinel2 data to track vegetation moisture – a key driver of bushfire risk. It delivers weekly maps across Australia to help agencies assess conditions, plan controlled burns, and monitor recovery.
🔗 sentinels.copernicus.eu/web/success-...
November 21, 2025 at 10:01 AM
sentinelonline.bsky.social
A new study using #Sentinel-3 radar altimetry shows that Bolivia’s #SalardeUyuni truly becomes electromagnetically perfectly smooth during the rainy season — reflecting radar and sunlight like a sheet of glass.
🔗 sentinels.copernicus.eu/web/success-...

#CopernicusEU #SentinelOnline #Sentinel3 #ESA
November 20, 2025 at 10:02 AM
sentinelonline.bsky.social
#Sentinel-2 imagery reveals the vast #NortheastGreenlandNationalPark — the world’s largest. Melt ponds and ice fractures mark the summer thaw, offering vital insight into how Greenland’s changing ice sheet influences global sea levels.

🔗 www.esa.int/ESA_Multimed...

#SentinelOnline #ESA #Copernicus
November 18, 2025 at 9:59 AM
sentinelonline.bsky.social
🌍 Have you used Copernicus Sentinel data in your work?
We’re collecting community success stories and would love to hear yours.
📩 Email us at [email protected]
Share your impact and help inspire others!
November 14, 2025 at 12:54 PM
sentinelonline.bsky.social
#Sentinel-2 imagery reveals the winding Likouala-aux-Herbes River in the Republic of the #Congo — a lifeline through vast peatlands and forests of the Congo Basin.
🔗 www.esa.int/ESA_Multimed...
#SentinelOnline #Space #Sentinel2 #CopernicusEU #ESA
November 12, 2025 at 11:09 AM
sentinelonline.bsky.social
#Sentinel-1D is in orbit!
On 4 Nov 2025, #Ariane6 successfully launched the #Copernicus Sentinel-1D satellite from Europe’s Spaceport in French Guiana continuing Europe’s day-and-night #EarthObservation and extending the Sentinel-1 mission for years to come.
🔗 sentinels.copernicus.eu/web/success-...
November 7, 2025 at 10:03 AM
sentinelonline.bsky.social
🌍 We’re live!

The Sentinel-1D launch broadcast has started from Europe’s Spaceport in French Guiana.

sentinels.copernicus.eu

#Sentinel1D #SentinelOnline #CopernicusEU #ESA #Ariane6 #EUspace #EarthObservation
November 4, 2025 at 8:43 PM
sentinelonline.bsky.social
24 hours to liftoff!
Tomorrow, 4 Nov 2025, #Sentinel-1D launches aboard #Ariane6 from Europe’s Spaceport, French Guiana — extending #CopernicusEU radar observations into the next decade. 🌍
📡 Broadcast begins: 20:15 UTC / 21:15 CET
🔗 Watch live sentinels.copernicus.eu

#SentinelOnline #ESA #EUspace
November 3, 2025 at 8:16 PM
sentinelonline.bsky.social
At #BiDS25, #SentinelOnline spoke with representatives from #Regio, an Estonian company working in #geospatial information and #cartography 🌍. We asked them about their connection with #Sentinel data and how they use it in their daily work.
#VoicesOfSentinels #BigDataFromSpace #CopernicusEU
October 31, 2025 at 1:35 PM
sentinelonline.bsky.social
The #Sentinel-2 satellite captured this stunning image of the greenhouse-covered landscape in Almería, Spain — where hundreds of square kilometres of plastic roofs shine white against the Earth below.
🔗https://dataspace.copernicus.eu/gallery/2025-4-1-observing-greenhouses-almeria-sentinel-2
October 30, 2025 at 1:25 PM
sentinelonline.bsky.social
🌍 Watch live: The Copernicus Sentinel-1D satellite launches aboard Ariane 6 on 4 Nov 2025 from Europe’s Spaceport in French Guiana.
📡 Broadcast begins 20:15 UTC / 21:15 CET
🔗 Live on sentinels.copernicus.eu
[CREDIT: ESA - P. Carril]

#Sentinel1D #Copernicus #ESA #Ariane6 #EUspace #EarthObservation
Graphic promoting the live broadcast of the Sentinel-1D launch on 4th of November 2025, featuring the Ariane 6 rocket. [CREDIT: ESA - P. Carril]
October 29, 2025 at 11:59 AM
sentinelonline.bsky.social
7 days until liftoff! 🚀

On 4 Nov 2025 at 18:03 local (French Guiana) / 21:03 UTC / 22:03 CET, Sentinel-1D launches aboard Ariane 6 — keeping Copernicus radar eyes on Earth, all weather, all the time. 🌍

#Sentinel1D #Copernicus #ESA #Ariane6 #EarthObservation
October 28, 2025 at 12:59 PM
sentinelonline.bsky.social
At #BiDS25, Sentinel Online spoke with Ioannis Kotaridis from the EU Satellite Centre @eusatellitecentre.bsky.social 🌍🛰️. He shared how #Sentinel data supports land, water and environmental monitoring. Stay tuned for more #VoicesofSentinel stories! #EarthObservation #SentinelOnline #CopernicusEU
October 22, 2025 at 11:59 AM
sentinelonline.bsky.social
🚀 On 4 Nov 2025 at 18:03 local time (21:03 UTC / 22:03 CET), #Arianespace, on behalf of the @esa.int , will launch #Sentinel1D from Europe’s Spaceport in French Guiana.
October 21, 2025 at 12:00 PM
sentinelonline.bsky.social
What an inspiring few days at #BiDS25! 🌍
The Sentinel Online team connected with researchers, institutions and innovators who are all using #Copernicus Sentinel data to monitor our planet and advance sustainability.
🔗Explore: sentinels.copernicus.eu/web/success-...
#EarthObservation #SentinelOnline
October 17, 2025 at 11:32 AM
sentinelonline.bsky.social
#Sentinel2 captures the golden harvest hues of the Yuanyang Hani rice terraces in China — where farming tradition meets space technology. From orbit, #Copernicus #EarthObservation tracks crop growth, water use and food security.
🔗 dataspace.copernicus.eu/gallery/2019...
October 17, 2025 at 8:28 AM
sentinelonline.bsky.social
🎙️ Voices of Sentinel @ #BiDS2025
Andrea Sibilia (JRC) shares how the #RiskDataHub project relates to Sentinel-based products and reflects on the key risks facing society today — and how geospatial analysis helps us better understand them.
#VoicesofSentinel #SentinelOnline #EarthObservation
October 15, 2025 at 11:52 AM
sentinelonline.bsky.social
We had the pleasure to interview Felix Creamer from the #MaxPlanckInstituteforBiogeochemistry at #BiDS25 🌍🛰️. He shared how he uses Sentinel data in his research. Stay tuned for more Voices of Sentinels interviews!
#SentinelOnline #BigDataFromSpace #EarthObservation
October 10, 2025 at 8:01 AM
sentinelonline.bsky.social
#ESA and #CIMR #L2PAD team met at ICM-CSIC, Barcelona, to discuss Level-2 algorithms for the Copernicus Imaging Microwave Radiometer mission
Launching in 2029, CIMR will deliver hi-res data on polar sea ice, oceans and land
Led by MET Norway with @esa.int support.

🔗https://github.com/CIMR-L2PAD
October 8, 2025 at 8:55 AM