#viirs — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #viirs, aggregated by home.social.
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Characterizing Wildfire Behavior With ECOSTRESS Land Surface Temperature Across Four California Case Studies
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https://doi.org/10.1016/j.ecoinf.2026.103777 <-- shared paper
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#GIS #spatial #mapping #ECOSTRESS #remotesensing #earthobservation #wildfire #increased #frequency #intensity #forestfire #monitoring #hotspot #detection #Rateofspread #HotspotBurn #severity #spatialanalysis #spatiotemporal #VIIRS #fireradiativepower #FRP #landsurface #temperature #California #casestudy #burn #severity #dNBR #landsat #satellite #WesternUSA #extremeweather #climatechange #water #hydrology #hydrometeorology #drought #humanactivity #humanimpacts #ECOsystemSpaceborneThermalRadiometerExperimentonSpaceStation #ISS #spacestation #LST #rateofspread
@nasa -
Characterizing Wildfire Behavior With ECOSTRESS Land Surface Temperature Across Four California Case Studies
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https://doi.org/10.1016/j.ecoinf.2026.103777 <-- shared paper
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#GIS #spatial #mapping #ECOSTRESS #remotesensing #earthobservation #wildfire #increased #frequency #intensity #forestfire #monitoring #hotspot #detection #Rateofspread #HotspotBurn #severity #spatialanalysis #spatiotemporal #VIIRS #fireradiativepower #FRP #landsurface #temperature #California #casestudy #burn #severity #dNBR #landsat #satellite #WesternUSA #extremeweather #climatechange #water #hydrology #hydrometeorology #drought #humanactivity #humanimpacts #ECOsystemSpaceborneThermalRadiometerExperimentonSpaceStation #ISS #spacestation #LST #rateofspread
@nasa -
#RUB:
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GeografieSatelliten erfassen den leuchtenden Puls der menschlichen Zivilisation
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"Die Corona-Lockdowns und die Energiesparmaßnahmen aufgrund es Ukraine-Kriegs haben Europa sichtlich gedimmt. Das zeigt eine neue Auswertung von Satellitendaten."8.4.2026
#EO #Erdbeobachtung #Licht #Lichtemission #Lichtverschmutzung #NASA #NOAA20 #NOAA21 #Raumfahrt #Satelliten #SpaceFlight #SuomiNPP #Umwelt #VIIRS #VIIRSDNB
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#RUB:
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GeografieSatelliten erfassen den leuchtenden Puls der menschlichen Zivilisation
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"Die Corona-Lockdowns und die Energiesparmaßnahmen aufgrund es Ukraine-Kriegs haben Europa sichtlich gedimmt. Das zeigt eine neue Auswertung von Satellitendaten."8.4.2026
#EO #Erdbeobachtung #Licht #Lichtemission #Lichtverschmutzung #NASA #NOAA20 #NOAA21 #Raumfahrt #Satelliten #SpaceFlight #SuomiNPP #Umwelt #VIIRS #VIIRSDNB
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RE: https://fediscience.org/@skyglowberlin/116369713042347883
Satellite imagery reveals increasing volatility in human night-time activity: https://www.nature.com/articles/s41586-026-10260-w -> Satellites capture the glowing pulse of human civilization: https://news.rub.de/english/press-releases/2026-04-08-geography-satellites-capture-glowing-pulse-human-civilization (my contribution to the 2nd image there was rotating - not far enough - and cropping it :-). #ALAN #LightPollution #VIIRS
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RE: https://fediscience.org/@skyglowberlin/116369713042347883
Satellite imagery reveals increasing volatility in human night-time activity: https://www.nature.com/articles/s41586-026-10260-w -> Satellites capture the glowing pulse of human civilization: https://news.rub.de/english/press-releases/2026-04-08-geography-satellites-capture-glowing-pulse-human-civilization (my contribution to the 2nd image there was rotating - not far enough - and cropping it :-). #ALAN #LightPollution #VIIRS
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Hmm, let's see what the lights look like in Cuba (December vs. February 12, 2026) #remoteimaging #viirs
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Hmm, let's see what the lights look like in Cuba (December vs. February 12, 2026) #remoteimaging #viirs
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Fire Event Explorer [NASA]
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https://www.earthdata.nasa.gov/dashboard/tools/fire-event-explorer <-- shared NASA mapping resource
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“This tool visualizes near real-time (NRT) satellite-based fire perimeters, active portions of fire perimeters (fire lines), and active fire pixel detections for the current year.
Use the bottom panel to select different date ranges or subset fires by size, duration, or intensity. Click on an individual fire to visualize the time series of fire growth every 12 hours and create video outputs in GIF or WebM formats.
These fire tracking data are from the Fire Event Data Suite (FEDS) algorithm. Find out more:
• FEDS data source documentation
• OpenVEDA documentation
• Earthdata VEDA dashboard..."
#GIS #spatial #mapping #VEDA #nearrealtime #satellite #remotesensing #fire #wildfire #extremeweather #perimeter #download #detection #monitoring #FireEventExplorer #FEDS #NRT #OpenVEDA #earthdata #VIIRS #landform #opendata #fedscience #fedservice #risk #hazard #infrastructre #NASA
@nasa -
Fire Event Explorer [NASA]
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https://www.earthdata.nasa.gov/dashboard/tools/fire-event-explorer <-- shared NASA mapping resource
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“This tool visualizes near real-time (NRT) satellite-based fire perimeters, active portions of fire perimeters (fire lines), and active fire pixel detections for the current year.
Use the bottom panel to select different date ranges or subset fires by size, duration, or intensity. Click on an individual fire to visualize the time series of fire growth every 12 hours and create video outputs in GIF or WebM formats.
These fire tracking data are from the Fire Event Data Suite (FEDS) algorithm. Find out more:
• FEDS data source documentation
• OpenVEDA documentation
• Earthdata VEDA dashboard..."
#GIS #spatial #mapping #VEDA #nearrealtime #satellite #remotesensing #fire #wildfire #extremeweather #perimeter #download #detection #monitoring #FireEventExplorer #FEDS #NRT #OpenVEDA #earthdata #VIIRS #landform #opendata #fedscience #fedservice #risk #hazard #infrastructre #NASA
@nasa -
Acabo de actualizar mi dataset sobre contaminación lumínica nocturna global generado con mi herramienta radiance-geojson (https://codeberg.org/imigueldiaz/radiance-geojson). Contiene archivos JSON (.json.gz) y un dump completo en PostGIS (restaurada ocupa 27GB, con casi 140 millones de puntos georreferenciados), con datos de radiancia, brillo del cielo y clasificación Bortle para 173 países a 0.5 km de resolución. Basado en imágenes VIIRS de Earth Observation Group, Colorado School of Mines.
Puedes descargarlo gratis desde: https://archive.org/details/radiance-geojson-data-2025
Ideal para análisis geoespaciales, ambientales y astronómicos, en mi caso lo usaré para astrofotografía si me da la vida. Licencia CC BY 4.0.
#opendata #geospatial #lightpollution #VIIRS #PostGIS #gis #spatialdata #dataset #CCBY4 #opensource #radiance #astrophoto #astrophotography
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Acabo de actualizar mi dataset sobre contaminación lumínica nocturna global generado con mi herramienta radiance-geojson (https://codeberg.org/imigueldiaz/radiance-geojson). Contiene archivos JSON (.json.gz) y un dump completo en PostGIS (restaurada ocupa 27GB, con casi 140 millones de puntos georreferenciados), con datos de radiancia, brillo del cielo y clasificación Bortle para 173 países a 0.5 km de resolución. Basado en imágenes VIIRS de Earth Observation Group, Colorado School of Mines.
Puedes descargarlo gratis desde: https://archive.org/details/radiance-geojson-data-2025
Ideal para análisis geoespaciales, ambientales y astronómicos, en mi caso lo usaré para astrofotografía si me da la vida. Licencia CC BY 4.0.
#opendata #geospatial #lightpollution #VIIRS #PostGIS #gis #spatialdata #dataset #CCBY4 #opensource #radiance #astrophoto #astrophotography
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In order to fully understand how #LightPollution affects our world, we need to know how much of it is in which places. Divergent results from different measurement methods present some tension, but recent research suggests a way forward.
Read more about how we can reconcile views of the Earth at night from above and below: http://www.darkskyconsulting.com/blog/from-ground-to-sky-reconciling-light-pollution-measurements-from-above-and-below
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In order to fully understand how #LightPollution affects our world, we need to know how much of it is in which places. Divergent results from different measurement methods present some tension, but recent research suggests a way forward.
Read more about how we can reconcile views of the Earth at night from above and below: http://www.darkskyconsulting.com/blog/from-ground-to-sky-reconciling-light-pollution-measurements-from-above-and-below
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Last night's nighttime view of Spain/Portugal before their power outage. (VIIRS Day/Night Band)
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Last night's nighttime view of Spain/Portugal before their power outage. (VIIRS Day/Night Band)
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Tokyo seen on VIIRS DNB Nighttime Imagery on Feb 11, 2025. That city sure has a lot of light! #Tokyo #RemoteImaging #VIIRS
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Tokyo seen on VIIRS DNB Nighttime Imagery on Feb 11, 2025. That city sure has a lot of light! #Tokyo #RemoteImaging #VIIRS
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Public service announcement:
Data from #VIIRS DNB since the summer is affected by an instrumental effect, which makes the data from the last few months darker than they should be (see e.g. this graph for Manhattan). The #NASA #BlackMarble team is working to fix it.
ht to Damien Guiraudie who wrote to me to ask what was going on, and also to Zhuosen Wang from @NASA who quickly responded to my question.
#LightPollution #RemoteSensing #EarthObservation #NighttimeLights #PSA
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The infamous 'mirrored L' of #LightPollution in western Germany (with Cologne, Düsseldorf, Duisburg, Essen and Dortmund particularly prominent, from bottom to upper left to upper right) as seen by the Chinese #SDGSAT-1 - https://sdg.casearth.cn/en/mobile/datas/SDGSAT - and displayed with the online tool https://pmisson.users.earthengine.app/view/sdgsat-eu-visual which permits zooming and panning. You can either look at the SDGSAT or a #VIIRS DNS layer with less resolution and no color or a map. Now someone please convert this into a sky brightness map!
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The infamous 'mirrored L' of #LightPollution in western Germany (with Cologne, Düsseldorf, Duisburg, Essen and Dortmund particularly prominent, from bottom to upper left to upper right) as seen by the Chinese #SDGSAT-1 - https://sdg.casearth.cn/en/mobile/datas/SDGSAT - and displayed with the online tool https://pmisson.users.earthengine.app/view/sdgsat-eu-visual which permits zooming and panning. You can either look at the SDGSAT or a #VIIRS DNS layer with less resolution and no color or a map. Now someone please convert this into a sky brightness map!
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[lance-modis] Unavailability of SNPP L2+ EDR data products until further notice -- Update
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[lance-modis] Unavailability of SNPP L2+ EDR data products until further notice -- Update
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Fuel For Hurricane Milton [remotesensing, NASA]
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https://earthobservatory.nasa.gov/images/153429/fuel-for-hurricane-milton <-- shared technical article
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https://weather.ndc.nasa.gov/sport/ <-- shared link to NASA SPoRT page
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#GIS #spatial #mapping #HurricanMilton #hurricanemilton2024 #HurricaneWarning #hurricane #extremeweather #remotesensing #climatechange #ocean #oceantemperatures #temperatures #Florida #GulfOfMexico #seasurfacetemperatures #risk #hazard #storm #stormsurge #flooding #wind #SPoRT #VIIRS #spatialanalysis #spatiotemporal #weather #weatherforecasting #satellite #global #coast #coastal #nowCOAST #disaster #naturaldisaster #naturalhazard #prediction #mitigation #planning #management #cost #economy
@nasa -
Fuel For Hurricane Milton [remotesensing, NASA]
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https://earthobservatory.nasa.gov/images/153429/fuel-for-hurricane-milton <-- shared technical article
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https://weather.ndc.nasa.gov/sport/ <-- shared link to NASA SPoRT page
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#GIS #spatial #mapping #HurricanMilton #hurricanemilton2024 #HurricaneWarning #hurricane #extremeweather #remotesensing #climatechange #ocean #oceantemperatures #temperatures #Florida #GulfOfMexico #seasurfacetemperatures #risk #hazard #storm #stormsurge #flooding #wind #SPoRT #VIIRS #spatialanalysis #spatiotemporal #weather #weatherforecasting #satellite #global #coast #coastal #nowCOAST #disaster #naturaldisaster #naturalhazard #prediction #mitigation #planning #management #cost #economy
@nasa -
Hmm, satellite hotspots in Southern Lebanon over the last 7 days 👀 #Lebanon #RemoteImaging #VIIRS #MODIS
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Hmm, satellite hotspots in Southern Lebanon over the last 7 days 👀 #Lebanon #RemoteImaging #VIIRS #MODIS
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#NASA hat mit dem #GEOS-Modell eine beeindruckende globale Karte des #CO2-Ausstoßes erstellt. Das hochauflösende #Wettermodell nutzt #Supercomputer und Milliarden von Datenpunkten, um atmosphärische Ereignisse wie #Stürme und #Wolkenformationen darzustellen. Das Modell zieht Daten von #Erdbeobachtungen und #Satelliteninstrumenten, darunter #MODIS und #VIIRS, heran und liefert eine Auflösung, die über 100 Mal höher ist als die typischer Wettermodelle.
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#NASA hat mit dem #GEOS-Modell eine beeindruckende globale Karte des #CO2-Ausstoßes erstellt. Das hochauflösende #Wettermodell nutzt #Supercomputer und Milliarden von Datenpunkten, um atmosphärische Ereignisse wie #Stürme und #Wolkenformationen darzustellen. Das Modell zieht Daten von #Erdbeobachtungen und #Satelliteninstrumenten, darunter #MODIS und #VIIRS, heran und liefert eine Auflösung, die über 100 Mal höher ist als die typischer Wettermodelle.
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A brand new NASA video reveals the fascinating patterns of carbon dioxide moving around our atmosphere.
The visualization shows #CO2 pouring out from major cities in the U.S., before being blown into swirling eddies by atmospheric currents.
The video, which shows the CO2 patterns between January and March 2020, was created using a model named the Goddard Earth Observing System ( #GEOS ),
which uses supercomputers to simulate the atmosphere based on data from satellite instruments including the Terra satellite's #MODIS and the Suomi-NPP satellite's #VIIRS, as well as ground observations
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A brand new NASA video reveals the fascinating patterns of carbon dioxide moving around our atmosphere.
The visualization shows #CO2 pouring out from major cities in the U.S., before being blown into swirling eddies by atmospheric currents.
The video, which shows the CO2 patterns between January and March 2020, was created using a model named the Goddard Earth Observing System ( #GEOS ),
which uses supercomputers to simulate the atmosphere based on data from satellite instruments including the Terra satellite's #MODIS and the Suomi-NPP satellite's #VIIRS, as well as ground observations
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NASA/MODIS: " We are pleased to announce that the Suomi-NPP GPS issue, detailed below, has been resolved. So, the processing for SNPP VIIRS NRT data restarts from today July 18 (DOY 2024-200) onwards. " #viirs #RemoteImaging #satellite
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NASA/MODIS: " We are pleased to announce that the Suomi-NPP GPS issue, detailed below, has been resolved. So, the processing for SNPP VIIRS NRT data restarts from today July 18 (DOY 2024-200) onwards. " #viirs #RemoteImaging #satellite
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VIIRS satellite still having issues and not functioning correctly. (used heavily for wildfire tracking) #VIIRS #RemoteImaging #satellite
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VIIRS satellite still having issues and not functioning correctly. (used heavily for wildfire tracking) #VIIRS #RemoteImaging #satellite
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Significant, significant difference... used to do this for hurricanes in third world countries with no power reporting, to get ground truth. 😬
Unfortunately, it appears there has been a GPS geolocation failure on the VIIRS satellite, the 7/11 image is incorrect and they have stopped acquiring images trying to figure out what the problem is. No VIIRS until they fix it or figure out what's going on! #RemoteImaging #VIIRS
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Significant, significant difference... used to do this for hurricanes in third world countries with no power reporting, to get ground truth. 😬
Unfortunately, it appears there has been a GPS geolocation failure on the VIIRS satellite, the 7/11 image is incorrect and they have stopped acquiring images trying to figure out what the problem is. No VIIRS until they fix it or figure out what's going on! #RemoteImaging #VIIRS
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Aha, NASA MODIS wildfire layers were all over the map (literally) this morning, it appears there has been some kind of problem with the GPS on the Suomi-NPP satellite. #NASA #RemoteImaging #wildfires #VIIRS #gis
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Aha, NASA MODIS wildfire layers were all over the map (literally) this morning, it appears there has been some kind of problem with the GPS on the Suomi-NPP satellite. #NASA #RemoteImaging #wildfires #VIIRS #gis
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Has happened often enough that it's fairly obvious by now: experimental #EO projects arguably should always include a transition roadmap for operational use, mission overlap etc.
"The NASA MODIS instruments were originally designed to meet research needs and were never considered as operational; but with their longevity, their use has evolved as they continue to provide long-term data records."
Leaving a mad scramble of splicing etc. See GRACE et al.
https://www.sciencedirect.com/science/article/pii/S0034425723005151?dgcid=rss_sd_all
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Has happened often enough that it's fairly obvious by now: experimental #EO projects arguably should always include a transition roadmap for operational use, mission overlap etc.
"The NASA MODIS instruments were originally designed to meet research needs and were never considered as operational; but with their longevity, their use has evolved as they continue to provide long-term data records."
Leaving a mad scramble of splicing etc. See GRACE et al.
https://www.sciencedirect.com/science/article/pii/S0034425723005151?dgcid=rss_sd_all
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Analyzing GOES-R ABI BRDF-Adjusted EVI2 Time Series By Comparing With VIIRS Observations Over The CONUS
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https://doi.org/10.1016/j.rse.2023.113972 <-- shared paper
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#GIS #spatial #mapping #remotesensing #satellite #vegetation #GOESR #GOES #VIIRS #CONUS #diurnal #ABI #earthobservation #terrestrial #ecology #environment #environmentalscience #imagery #EVI2 #adjustments #postprocessing #RTLSR #model #BRDF #GeoNEX #GOES16 #agriculture #landcover #corrections #monitoring #greenness #NLCD -
Analyzing GOES-R ABI BRDF-Adjusted EVI2 Time Series By Comparing With VIIRS Observations Over The CONUS
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https://doi.org/10.1016/j.rse.2023.113972 <-- shared paper
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#GIS #spatial #mapping #remotesensing #satellite #vegetation #GOESR #GOES #VIIRS #CONUS #diurnal #ABI #earthobservation #terrestrial #ecology #environment #environmentalscience #imagery #EVI2 #adjustments #postprocessing #RTLSR #model #BRDF #GeoNEX #GOES16 #agriculture #landcover #corrections #monitoring #greenness #NLCD -
This new paper about variability in #VIIRS DNB data is likely to be interesting to people who work on #RemoteSensing with #NighttimeLights: https://www.sciencedirect.com/science/article/pii/S1569843223003084
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#IFPinofranqueado #IIFF #Cáceres #LasHurdes #EarthObservation Hotspots acquired by #VIIRS over the last few days, as well as today's plume and burned area from the #olci sensor.
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#IFPinofranqueado #IIFF #Cáceres #LasHurdes #EarthObservation Hotspots acquired by #VIIRS over the last few days, as well as today's plume and burned area from the #olci sensor.
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It's amazing how easy it is now for anyone to follow a fire anywhere in the world
Here a current #wildfire in #Castelló (E #Spain): Villanueva de Viver. Images of yesterday & today from #Copernicus (reddish) and #FIRMS (yellowish), using #MODIS & #VIIRS data. Currently about 4000 ha
@wildfirescience #IFVillanuevaViver 🔥 #GIS #spatial #mapping #remotesensing #opendata
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It's amazing how easy it is now for anyone to follow a fire anywhere in the world
Here a current #wildfire in #Castelló (E #Spain): Villanueva de Viver. Images of yesterday & today from #Copernicus (reddish) and #FIRMS (yellowish), using #MODIS & #VIIRS data. Currently about 4000 ha
@wildfirescience #IFVillanuevaViver 🔥 #GIS #spatial #mapping #remotesensing #opendata
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This area near Mons, Belgium turned off their streetlights late at night starting last November, in order to save energy. Check out what happened to the nighttime satellite imagery!
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🔵 Tropical Cyclone Freddy near #Madagascar🇲🇬 21 February 2023 #SuomiNPP🛰️ #VIIRS Full-size ➡️ https://flic.kr/p/2oibru4 #OpenData #SciComm #RemoteSensing #Freddy #CycloneFreddy Image is about 1,950 kilometers wide
