#sentinel — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #sentinel, aggregated by home.social.
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🛰️🔥 1e photo de #Sentinel-5P montrant la distribution moyenne sur 3 jours du monoxyde de carbone atmosphérique provenant des incendies de forêts en Amérique du Nord entre le 9 et le 11 août, comparée à l'hémisphère sud.
2e 📷 : zoom sur la Colombie-Britannique par Sentinel-2 -
De #Sentinel satellieten maken beelden in verschillende golflengtegebieden. Het nabije infrarood (SWIR) geeft duidelijk de brandhaarden op 16/08 aan in de #HogeVenen (met geel-oranje kleur). De satelliet passeert echter maar om de paar dagen over dezelfde plaats. Is de start zichtbaar? 1/n
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🔥 The Green Illusion: Why Zoning-Level Analysis Changes the Picture
📊 Gross community statistics can be misleading. When measuring an entire neighborhood, large municipal parks and green buffers inflate the overall 'greenness' score.
❗ When we filter the data down exclusively to actual Residential Land Use Districts in established communities, the picture changes significant:
🔹 Unvegetated/Impervious surfaces (Solid) explode to ~80% (79.22%) of the total zoned area.
🔹 Vegetative classes collapse: Functional lawns and canopy cover are compressed into narrow margins (Lawn: 2.15%, Forest: 0.59%), with community-level sparsed trees (Park) accounting for only 17.87%.☝️ Moving from macro-boundaries to parcel-level zoning exposes the true physical density of Calgary’s residential footprint.
#GIS #RemoteSensing #EarthObservation #Calgary #SpatialDataScience #LandCover #MachineLearning #Geoscience #GreennessOfCalgary #Rstats #YYC #DataScience #Urban #Sentinel
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Redis Sentinel: `sentinel monitor <name> <host> <port> <quorum>` with quorum=2 ensures 2 Sentinels agree before promoting a replica. Config on Redis 5.0+/Ubuntu 20.04. Automatic failover without manual intervention. #sentinel #high-availability #failover #ValtersIT
https://www.valtersit.com/vault/automated-failover-with-sentinel-and-sentinel-monitor-quorum-c212c0/
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Enforce S3 bucket encryption across all Terraform workspaces with custom Sentinel policies. This snippet shows how to upload a policy set via the tfe provider and attach it in minutes. Linux/macOS ready. #terraform #sentinel #policy-as-code #ValtersIT
https://www.valtersit.com/vault/implementing-custom-policy-as-code-with-sentinel-and-terrafo-874172/
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🛰️🔥 Juillet 2026, les feux de Saumos et Biscarrosse ont ravagé environ 42 000 hectares. Sur cette image du satellite #Sentinel-2 du 2 août, les cicatrices des incendies apparaissent en brun ainsi que celles, estompées, des feux de 2022.
📷 European Union, #Copernicus -
🛰️ Cette visualisation de données en libre accès des satellites #Sentinel-2 du programme européen #Copernicus présente les incendies actifs et la zone touchée en orange en #Gironde au 26 juillet 2026.
Ces données permettent de cartographier les zones brûlées, de surveiller les fronts d'incendie actifs et d'aider les autorités à évaluer les impacts sur les forêts, les zones habitées et les infrastructures.
Crédit : European Union, Copernicus Emergency Management Service data -
Dankzij de SWIR (short-wave infrared) camera op de #Sentinel 2A satelliet (via de #Copernicus Browser) zijn de bosbranden nabij #Fontainebleau goed zichtbaar: witte en rode kleuren duiden op de brandhaarden (hoge temperatuur). De bruinachtige kleur ten ZO geeft verbrande stukken aan (zie het verschil met 10 juli).
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A Scale-Invariance-Based Algorithm Application For Land Surface Temperature Downscaling In Denmark
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https://doi.org/10.3390/rs18132263 <-- shared paper
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https://zenodo.org/records/20863040 <-- shared open data for downscaled LST dataset for Copenhagen
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H/T @CLIM4cities
#urbanclimate #downscaling #landsurfacetemperature #LST #AI #machinelearning #scaleinvariance #residualcorrection #Sentinel #Landsat #satellite #remotesensing #earthobservation #CLIM4cities #UrbanClimate #ClimateServices #MachineLearning #ClimateAdaptation #heatwave #temperature #ontheground #Copenhagen #Denmark #impervioussurface #asphalt #roof #concrete #albedo #heatabsorption #mitigation #urban #urbancentre #treecover #vegetation #urbanheatisland #planning #design #hotspots #monitoring #spatialanalysis #spatiotemporal #model #modeling #usecase #operational #climatechange #extremeweather #evidencebased #adapation #sustainability #urbanplanning #climateresilience #EssentialClimateVariable #ECV
@+ATLANTIC | @Danish Meteorological Institute | @ESA Φ-lab Collaborative Innovation Network | @CLIM4cities -
Es geht um die Präsentation der Raumfahrt auf der ILA, die neuesten Entwicklungen zur #Artemis III-Mission mit #ESA-Astronaut Luca Parmitano und um die Mission von ESA-Reserveastronaut Aleš Svoboda. Außerdem gibt es Informationen zur Nachfolgemission zur Erdbeobachtungsmission #Sentinel-1, zu den Missionen Hera und Proba-3 und zur historischen Aufarbeitung der Geschichte der DLR-Vorgängerorganisationen.
2/3
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Optical, Radar, And Hybrid Indices To Detect Farming Practices In Europe
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https://doi.org/10.1016/j.rse.2026.115553 <-- shared paper
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“HIGHLIGHTS:
• [they] compare[d] Sentinel-1 and Sentinel-2 time series to detect farming practices.
• HyBRIS index is introduced, temporally weighting BSI and VH/VV into a daily index.
• Time-series minima and maxima are used to predict sowing, harvest, and tillage.
• Validation is performed across several years, crop types, and European locations.
• Phenology detection is improved compared to HRL-Cropland.
ABSTRACT: Arable farming practices dictate both crop cycles and soil dynamics, and are central to agriculture's environmental impact and its mitigation. Sowing and harvesting mark the beginning and end of the growing season, while tillage modifies soil structure during the dormant period. Although well-established methods exist for delineating the growing season using phenology and optical data, the detection of farming practices, particularly tillage, remains underexplored. This study investigates the strengths of radar and optical data to retrieve sowing, harvest, and tillage dates at the field level, and proposes a novel Hybrid Bare Soil Radar Index (HyBRIS). Based on Sentinel-1 and Sentinel-2, HyBRIS merges optical and radar data into a single index using a temporally weighted mean. Local minima and maxima of the time series are used to detect farming practices across European sites. Validation is carried out against a reference dataset comprising 238 fields in 11 EU countries, including 462 sowing, 374 harvest, and 388 tillage events covering more than 40 crop types over 8 years. Compared to the Copernicus High Resolution Layer Croplands product (HRL-Cropland), the proposed method based on HyBRIS time series improved sowing and harvest dates detection (MAE 26 and 23 days, respectively). Additionally, this method enabled tillage dates estimation during dormant periods (MAE = 28 days), but tended to overestimate the number of tillage events (producer's accuracy = 97%, user's accuracy = 70%). Incorporating soil moisture data is advised for reducing false positives. The results highlight the potential of optical, radar, and hybrid indices for monitoring agricultural management and supporting environmental stewardship…”
#Sowing #Harvest #tillage #tillagedetection #cropland #CroplandManagement #remotesensing #earthobservation #sentinel #Copernicus #cropland #satellite #optical #radar #sensor #landuse #landcover #landsurface #phenology #agricultural #monitoring #GIS #spatial #mapping #spatialanalysis #spatiotemporal #arable #farming #agriculture #soil #substrate #environment #sustainability #environmentalstewardship #growingseason #Europe #region #model #modeling -
🛰️ En utilisant les données du satellite européen #Sentinel-1, il est estimé qu'environ 58 870 bâtiments ont probablement été endommagés ou détruits dans la région touchée par le tremblement de terre du 24 juin au #Venezuela.
Source https://gis.earthdata.nasa.gov/portal/home/item.html?id=0c3d77dd5aae46e4829d9a282477615c -
🛰️ L'ESA a annoncé la fin des opérations du satellite #Sentinel-1A après 12 ans d'imagerie radar pour le programme européen #Copernicus
Désormais, l’héritage de la mission se perpétue avec Sentinel-1C et -1D.
📷 Islande et Melbourne en Australie comme dernières images, ESA -
Compound Hydrogeomorphic Cascades And Rapid Upstream To Downstream Hazard Coupling In The Eastern Himalaya
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https://doi.org/10.1038/s41598-026-52915-8 <-- shared paper
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https://doi.org/10.5194/esurf-13-1281-2025 <-- shared paper
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https://doi.org/10.1007/s11069-025-07766-3 <-- shared paper
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[I recognise that the photo is instead for the floods, etc in Lubra, Nepal - but felt it better showed the hydrogeomorphical setting (sic) for the 'casual' post viewer...]
H/T @Kuldeep Dutta
“In hilly regions transitioning rapidly to low gradient alluvial plains, localized hydrometeorological triggers can instantly scale into devastating basin wide disasters. This study dissects the September 2020 cascading hazard in parts of the Arunachal Pradesh-Assam corridor to quantify the rapid coupling between upstream hillslopes and downstream floodplains…”
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“Extreme precipitation in the Eastern Himalaya is increasingly associated with coupled hillslope-floodplain hazards. This study examines the 17th-18th September 2020 rainfall event in Arunachal Pradesh initiating landslides and its downstream impacts in Assam, India, using multi-sensor satellite data and long-term rainfall records. Sentinel-2 imagery was used to map landslides and debris flows, Sentinel-1 SAR data to delineate flood extent, and IMD gridded rainfall (1996–2020) to analyse rainfall spell characteristics. The event triggered widespread slope failures, localized landslide damming, and a subsequent breach, generating sediment-laden flows that inundated ~ 100 km2 of the Dhemaji floodplain. A backscatter-derived Relative Flood Volume Index (RFVI) indicates spatial variability in inundation intensity, although it does not represent absolute flood volume. Rainfall analysis suggests that antecedent wetness from preceding spells preconditioned slopes, while peak daily rainfall (> 170 mm/day/) initiated landsliding. Power-law scaling shows negligible dependence of intensity on duration (R² ≈ 0.0004), whereas cumulative rainfall exhibits a stronger relationship with duration (R² ≈ 0.54). These results indicate distinct roles of rainfall intensity and accumulation in controlling landslide initiation and downstream flooding, respectively, highlighting the importance of compound rainfall forcing in rapid hydrogeomorphic cascades...”
#EarthScience #RemoteSensing #Himalayas #NaturalHazards #ClimateChange #ScientificReports #GeospatialAnalysis #DisasterMitigation #Landslide #Flooding #alluvial #fluvial #water #hydrology #hydrography #flood #flooding #spatialanalysis #spatiotemporal #mountain #plain #hydrometeorological #hydrogeomorphology #ArunachalPradesh #Assam #India #hillslope #floodplain #rainfall #precipitation #extremeweather #engineeringgeology #massmovement #landslide #debrisflow #risk #hazard #monitoring #GIS #spatial #mapping #remotesensing #satellite #Sentinel #sedimentation #humanimpacts #infrastructure #damage #cost #economics #public #safety #model #modeling #downstream -
🛰️ En utilisant les données de la mission satellitaire européenne #Copernicus #Sentinel-5P ainsi que des informations sur le produit intérieur brut (PIB), des chercheurs ont constaté que de nombreuses grandes villes du monde connaissent actuellement une croissance économique tout en réduisant leurs émissions de dioxyde d'azote
En savoir plus : https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-5P/Cleaner_air_and_prosperity_can_go_hand_in_hand
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🛰️🌋 Une éruption sous-marine a débuté le 8 mai dans la mer de Bismarck centrale, à 130 kilomètres au sud-est de l'île de Manus, en Papouasie-Nouvelle-Guinée. Cette éruption a révélé un volcan sous-marin jusqu'alors inconnu, provisoirement nommé volcan de la crête du Titan.
Le satellite #Sentinel-2 du programme européen #Copernicus a pris cette photo qui révèle des cendres, des eaux décolorées et des panaches volcaniques liés à l'éruption en cours. -
The #Copernicus #Sentinel missions are a fleet of dedicated, next-generation Earth observation satellites developed by the European Space Agency to provide continuous, global data on our planet's environment.
Equipped with advanced radar and multi-spectral imaging instruments, these constellations monitor critical variables including air quality, ocean topography, and land-surface changes to support climate research and emergency disaster response.
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🛰️🌋 Le satellite #Sentinel-2 du programme européen #Copernicus a capturé l'activité effusive du #Stromboli en mai 2026.
La coulée de lave (longue de plus d'un kilomètre) progressant le long de la Sciara del Fuoco et atteignant la côte est parfaitement visible
Via PlatformAdam -
Cette rare image sans nuages de l'Irlande, par l'un des satellites #Sentinel-3 du programme européen #Copernicus le 29 avril 2026, offre une vue exceptionnelle de l'île.
Les observations satellitaires de Copernicus au fil du temps contribuent à la surveillance et à l'analyse environnementales. -
🛰️📷 La Principauté de Monaco 🇲🇨 par le satellite #Sentinel 2 le 16 mars dernier. On voit la densification urbaine (tons gris et beige) de l'enclave mais aussi les interactions terre/mer permettant la surveillance de la croissance côtière et la qualité de l'eau
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(more Linux and FOSS news in previous posts of thread)
PlayStation 3 emulator RPCS3 can now auto-configure games for you:
https://www.gamingonlinux.com/2026/04/playstation-3-emulator-rpcs3-can-now-auto-configure-games-for-you/Nintendo 64 emulator Gopher64 adds RetroAchievements support:
https://www.gamingonlinux.com/2026/04/nintendo-64-emulator-gopher64-adds-retroachievements-support/After years in development v8 of the factory management RTS Mindustry is out:
https://www.gamingonlinux.com/2026/04/after-years-in-development-v8-of-the-factory-management-rts-mindustry-is-out/Open source RTS game Warzone 2100 version 4.7 brings major changes:
https://www.gamingonlinux.com/2026/04/open-source-rts-game-warzone-2100-version-4-7-brings-major-changes/TRX the open source re-implementation of Tomb Raider is making progress on Tomb Raider 3:
https://www.gamingonlinux.com/2026/04/trx-the-open-source-re-implementation-of-tomb-raider-is-making-progress-on-tomb-raider-3/Heroes of Might and Magic 2 project fheroes2 version 1.1.15 is out now:
https://www.gamingonlinux.com/2026/04/heroes-of-might-and-magic-2-project-fheroes2-version-1-1-15-is-out-now/Luanti (formerly Minetest) v5.15.2 brings critical security updates:
https://www.gamingonlinux.com/2026/04/luanti-formerly-minetest-v5-15-2-brings-critical-security-updates/Sunshine Game Streaming Introduces Vulkan Video Encode Support:
https://www.phoronix.com/news/Sunshine-v2026.413.143228Sentinel is an achievement watcher for non-Steam games on Linux:
https://www.gamingonlinux.com/2026/04/sentinel-is-an-achievement-watcher-for-non-steam-games-on-linux/SDL (Simple DirectMedia Layer) ban AI / LLM code contributions:
https://www.gamingonlinux.com/2026/04/sdl-simple-directmedia-layer-ban-ai-llm-code-contributions/(more FOSS news in comments)
#WeeklyNews #OpenSource #FOSSNews #OpenSourceNews #FOSS #News #PS3 #PlayStation #PlayStation3 #RPCS3 #Nintendo #Nintendo64 #Gopher64 #RetroAchievements #RTS #Mindustry #Warzone2100 #TRX #TombRaider #Fheroes2 #HeroesOfMightAndMagic2 #Luanti #Minetest #Sentinel #SDL #FOSSGaming #Gaming #Game #OpenSourceGame #FOSSGame #FosseryTech
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European Ground Motion Service (#EGMS)
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https://doi.org/10.1016/j.rse.2026.115389 <-- shared paper
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#GIS #spatial #mapping #EuropeanGroundMotionService #EGMS #copernicus #satellite #PersistentScattererInterferometry #SAR #sentinel #sentinel1 #displacement #deformation #useruptake #serviceevolution #Envisat #InSAR #ROSEL #CopernicusGlobalGroundMotionService #CGGMS #risk #hazard #disaster #ground #motion #surface #deformation #usecase #subsidence #differential #remotesensing #earthobservation
@ESA -
🛰️🌍 Strasbourg, le 8 avril, par le satellite #Sentinel-2 du programme européen #Copernicus.
Le tissu urbain dense apparaît dans des tons gris atténués au centre, entouré d'une mosaïque de champs agricoles brun clair et vert vif. À l’est, le cours sinueux du Rhin forme une frontière naturelle, bordée de bassins portuaires et d’infrastructures industrielles.
