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#nisar — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #nisar, aggregated by home.social.

  1. Flash droughts don't wait for the seasonal forecast. Across 41 events at 12 central-US sites (2016–2024), we've been disentangling whether atmospheric dryness (VPD) or root-zone soil moisture is the dominant stressor — the answer changes how early you can see one coming.

    NISAR's L-band radar is about to make root-zone moisture visible at scale, which makes this question answerable in near-real-time.

    #drought #RemoteSensing #hydrology #ClimateChange #NISAR

  2. Flash droughts don't wait for the seasonal forecast. Across 41 events at 12 central-US sites (2016–2024), we've been disentangling whether atmospheric dryness (VPD) or root-zone soil moisture is the dominant stressor — the answer changes how early you can see one coming.

    NISAR's L-band radar is about to make root-zone moisture visible at scale, which makes this question answerable in near-real-time.

    #drought #RemoteSensing #hydrology #ClimateChange #NISAR

  3. Проклятие Бога Солнца: как потомки конкистадоров расплачиваются за грехи предков

    Многие инженерные решения выглядят единственным разумным вариантом в момент их принятия. Альтернативы кажутся слишком дорогими, сложными и непривычными. Горизонт планирования ограничен несколькими десятилетиями, тогда как проблемы могут проявиться через 100, а то и через 500 лет. Именно это происходит в Мехико: город проседает на сантиметры каждый месяц, а в наиболее пострадавших кварталах — на 50 сантиметров в год. Проблема заложена почти 500 лет назад, описана 100 лет назад — и она по-прежнему не решена. Трещины в дорогах, перекошенные здания, обрушения метро, водный кризис — все это тянется от одного решения, принятого испанскими конкистадорами в XVI веке. Давайте разберемся, как ошибки прошлого влияют на настоящее и к каким фундаментальным проблемам с окружающей нас инфраструктурой приводит смена технологий.

    habr.com/ru/companies/ru_mts/a

    #Мехико #проседание_грунта #водоносный_горизонт #урбанистика #инфраструктура #Теночтитлан #водный_кризис #NISAR #геология #экология_городов

  4. NASA earth observation satellites have been shown to be able to locate the approximate positions of GPS jammers - typically within 3-6kms.

    Researchers looked at data from the Cyclone Global Navigation Satellite System (CYGNSS) and NASA-ISRO Synthetic Aperture Radar (NISAR), satellites to locate known GPS jammer sites (in Iran) and indicate how this information has potential usefulness for supporting the creation and distribution of warnings for aviation and maritime navigation that may be affected by GPS jammers. arstechnica.com/gadgets/2026/0

    Learn more about GPS Jamming and Spoofing here: techaptitude.substack.com/p/gp #GPS #GPSJamming #CYGNSS #NISAR #NASA #Satellites #GNSS #TechAptitude #GPSSpoofing #Satellites #Space

  5. NASA earth observation satellites have been shown to be able to locate the approximate positions of GPS jammers - typically within 3-6kms.

    Researchers looked at data from the Cyclone Global Navigation Satellite System (CYGNSS) and NASA-ISRO Synthetic Aperture Radar (NISAR), satellites to locate known GPS jammer sites (in Iran) and indicate how this information has potential usefulness for supporting the creation and distribution of warnings for aviation and maritime navigation that may be affected by GPS jammers. arstechnica.com/gadgets/2026/0

    Learn more about GPS Jamming and Spoofing here: techaptitude.substack.com/p/gp

  6. NASA’s new NISAR satellite data shows Mexico City is sinking nearly 10 inches a year due to aquifer depletion, threatening infrastructure and worsening its water crisis. english.mathrubhumi.com/news/w #NASA #NISAR #MexicoCity #AquiferDepletion

  7. On-board camera view of NISAR's reflector antenna deployment. I hope they release this video..

    Apparently ISRO insisted to put these cameras on spacecraft to monitor the reflector deployment.

    #NASA #ISRO #NISAR

  8. On-board camera view of NISAR's reflector antenna deployment. I hope they release this video..

    Apparently ISRO insisted to put these cameras on spacecraft to monitor the reflector deployment.

    #NASA #ISRO #NISAR

  9. Our shoutout for the top social post of the day on Greenland Ilulissat Icefjord goes to @earthscope_sci on Instagram. From @earthscope_sci: EarthScope staff visited Greenland to reset GNSS sites on Jakobshavn Glacier, aiding the #NISAR mission in tracking ice flow. #trkinsp

  10. And here are my very first results with these new #NASA #NISAR data.
    I had to debug a few my NISAR data reader to correctly read the frequencyB layer.
    Now it is working.
    Here are both frequency A and B differential interferograms on Ethiopia showing the November 2025 volcanic eruption.

    #AMSTEREngine #AMSTerToolbox

  11. And here are my very first results with these new #NASA #NISAR data.
    I had to debug a few my NISAR data reader to correctly read the frequencyB layer.
    Now it is working.
    Here are both frequency A and B differential interferograms on Ethiopia showing the November 2025 volcanic eruption.

    #AMSTEREngine #AMSTerToolbox

  12. Picture of #NISAR taken from a range of 100 km by Lanteris' (formerly Maxar's) #WorldView satellite. The image was taken on 21 August 2025.

    Source: x.com/ISROSpaceflight/status/1

  13. Picture of #NISAR taken from a range of 100 km by Lanteris' (formerly Maxar's) #WorldView satellite. The image was taken on 21 August 2025.

    Source: x.com/ISROSpaceflight/status/1

  14. Oggi, a #LineaRadioSavona con GianFunk siamo andati in orbita eliosincrona a curiosare le potenzialità di #NISAR , il satellite #NASA - #ISRO dalle mille risorse!
    Grazie a chi ha ascoltato, buon sabato!🙏👋🚀
    #UnoRadio #Spazio
    #UnoSpazio #MastoRadio @attualita @astronomia

  15. NISAR spacecraft and its radar payload passed all of the preliminary checks. The mission began raising the satellite to its 747 km operational orbit. 🥳 🎉🥂

    science.nasa.gov/blogs/nisar/2

    #NASA #ISRO #NISAR

  16. NISAR spacecraft and its radar payload passed all of the preliminary checks. The mission began raising the satellite to its 747 km operational orbit. 🥳 🎉🥂

    science.nasa.gov/blogs/nisar/2

    #NASA #ISRO #NISAR

  17. Un satellite ha appena aperto un ombrello gigante di 12 metri nello spazio, diventando l'antenna più grande mai dispiegata dalla NASA. Questa struttura record può vedere attraverso nuvole e foreste, rilevando movimenti della Terra di appena un centimetro. Il modo di osservare il nostro pianeta non sarà più lo stesso.

    futuroprossimo.it/2025/08/nisa

    #NISAR #spazio #futuroprossimo

  18. Un satellite ha appena aperto un ombrello gigante di 12 metri nello spazio, diventando l'antenna più grande mai dispiegata dalla NASA. Questa struttura record può vedere attraverso nuvole e foreste, rilevando movimenti della Terra di appena un centimetro. Il modo di osservare il nostro pianeta non sarà più lo stesso.

    futuroprossimo.it/2025/08/nisa

    #NISAR #spazio #futuroprossimo

  19. Die größte NASA-Antenne aller Zeiten wurde erfolgreich im All entfaltet: Der 12 Meter große Reflektor des #NISAR-Satelliten wird nun Eisschilde, Erdbeben und Ökosysteme mit beispielloser Präzision überwachen. winfuture.de/news,152992.html?

  20. Die größte NASA-Antenne aller Zeiten wurde erfolgreich im All entfaltet: Der 12 Meter große Reflektor des #NISAR-Satelliten wird nun Eisschilde, Erdbeben und Ökosysteme mit beispielloser Präzision überwachen. winfuture.de/news,152992.html?

  21. daswetter.at:
    "
    Zwei leistungsstarke Radargeräte werden die Überwachung der Erde aus dem Weltraum revolutionieren, indem sie Bewegungen bis auf den Zentimeter genau erfassen – selbst durch Wolken hindurch und bei Dunkelheit.
    "
    ".. NISAR (NASA-ISRO Synthetic Aperture Radar) – kann laut NASA die Bewegung von Land- und Eisoberflächen auf den Zentimeter genau erfassen."

    daswetter.at/nachrichten/astro

    16.8.2025

    #EO #Erdbeobachtung #ISRO #NASA #NISAR #Radar #Raumfahrt #Satelliten #SpaceFlight

  22. daswetter.at:
    "
    Zwei leistungsstarke Radargeräte werden die Überwachung der Erde aus dem Weltraum revolutionieren, indem sie Bewegungen bis auf den Zentimeter genau erfassen – selbst durch Wolken hindurch und bei Dunkelheit.
    "
    ".. NISAR (NASA-ISRO Synthetic Aperture Radar) – kann laut NASA die Bewegung von Land- und Eisoberflächen auf den Zentimeter genau erfassen."

    daswetter.at/nachrichten/astro

    16.8.2025

    #EO #Erdbeobachtung #ISRO #NASA #NISAR #Radar #Raumfahrt #Satelliten #SpaceFlight

  23. The final hardware deployment of the NASA-ISRO SAR (NISAR) satellite, the 12-meter radar antenna reflector was successfully completed today, August 15. Congratulations to all the people involved in reaching this important milestone in the mission, in the USA and India. #NASA #ISRO #SAR #satellite #NISAR jpl.nasa.gov/news/giant-radar-

  24. The final hardware deployment of the NASA-ISRO SAR (NISAR) satellite, the 12-meter radar antenna reflector was successfully completed today, August 15. Congratulations to all the people involved in reaching this important milestone in the mission, in the USA and India. #NASA #ISRO #SAR #satellite #NISAR jpl.nasa.gov/news/giant-radar-

  25. NISAR: The New Radar in Space for Precision Mapping of Earth  
    NISAR (acronym for NASA-ISRO Synthetic Aperture Radar or NASA-ISRO SAR), a joint collaborative mission of NASA and ISRO, was successfully launched...........
    #Earth #Earthobservationsatellite #Earthscience #ISRO #NASA #NASAISROSyntheticApertureRadar #NISAR #Radar #SAR #science #Sciencenews #space #SyntheticApertureRadar #UmeshPrasad
    Umesh Pr

    scientificeuropean.co.uk/scien

  26. This is not a #NISAR interferogram but....
    It is issued from the available #NISAR sample data set made from #ALOS 2 #SAR acquisition of October 12 and November 27, 2008.
    This to show to that my #NISAR data reader is now functional making the #AMSTerEngine and #AMSTer toolbox #NISAR ready!