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Project Stormfury was an attempt to weaken tropical cyclones by flying aircraft into them and seeding with silver iodide. The project was run by the United States Government from 1962 to 1983. The hypothesis was that the silver iodide would cause supercooled water in the storm to freeze, disrupting the inner structure of the hurricane, and this led to seeding several Atlantic hurricanes. However, it was later shown that this hypothesis was incorrect. It was determined that most hurricanes do not contain enough supercooled water for cloud seeding to be effective. Additionally, researchers found that unseeded hurricanes often undergo the same structural changes that were expected from seeded hurricanes. This finding called Stormfury's successes into question, as the changes reported now had

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  • El projecte Stormfury va ser un intent de debilitar els ciclons tropicals per mitjà de la sembra de núvols amb iodur d'argent mitjançant el vol d'avions. El projecte va ser dut a terme pel govern dels Estats Units entre el 1962 i el 1983. La hipòtesi era que el iodur d'argent causaria que l'aigua subfusionada de la tempesta es congelés, interrompent l'estructura interna de l'huracà. Això va conduir a la sembra de diversos huracans atlàntics. Tanmateix, més endavant es va veure que la hipòtesi era incorrecta. En realitat, es va determinar que gran part dels huracans no contenia suficient aigua subfusionada perquè la sembra de núvols fos eficaç. Addicionalment, els investigadors van descobrir que els huracans no sembrats sovint patien els mateixos que s'esperaven dels huracans sembrats. Aquest descobriment va posar en qüestió els èxits del projecte Stormfury, ara que els canvis observats responien a una explicació natural. L'últim vol experiment va ser el 1971, a causa de la manca de tempestes candidates i dels canvis en la flota de NOAA. Més d'una dècada després de l'últim experiment de modificació, el projecte Stormfury va ser oficialment cancel·lat. Malgrat no complir l'objectiu de reduir la destructivitat dels huracans, el projecte Stormfury no va ser en va. Les dades observacionals i les investigacions del cicle de vida del ciclons recollides en el programa Stormfury van ajudar a perfeccionar les prediccions meteorològiques dels moviments i la intensitat dels huracans veniders. (ca)
  • Project Stormfury was an attempt to weaken tropical cyclones by flying aircraft into them and seeding with silver iodide. The project was run by the United States Government from 1962 to 1983. The hypothesis was that the silver iodide would cause supercooled water in the storm to freeze, disrupting the inner structure of the hurricane, and this led to seeding several Atlantic hurricanes. However, it was later shown that this hypothesis was incorrect. It was determined that most hurricanes do not contain enough supercooled water for cloud seeding to be effective. Additionally, researchers found that unseeded hurricanes often undergo the same structural changes that were expected from seeded hurricanes. This finding called Stormfury's successes into question, as the changes reported now had a natural explanation. The last experimental flight was flown in 1971, due to a lack of candidate storms and a changeover in NOAA's fleet. Project Stormfury was officially canceled more than a decade after the last modification experiment. Although the project failed to achieve its goal of reducing the destructiveness of hurricanes, its observational data and storm lifecycle research helped improve meteorologists' ability to forecast the movement and intensity of hurricanes. (en)
  • Le programme Stormfury (project Stormfury en anglais) était une expérience d’ensemencement des nuages des cyclones tropicaux avec de l’iodure d'argent pour en diminuer l’intensité. Le programme était financé de 1962 à 1983 par le gouvernement des États-Unis et sous la supervision du Weather Bureau et de son successeur le National Weather Service. Le dernier vol s’est effectué en 1971, lors d’un changement dans la flotte d’avions opéré par NOAA, mais les données ont continué à être analysées durant plus de dix ans. Malgré l’insuccès à influencer les cyclones, le programme Stormfury a permis des observations in situ de la physique des nuages qui a permis d’améliorer les connaissances sur le cycle de vie des systèmes tropicaux et leur prévision. (fr)
  • Il progetto Stormfury aveva come obiettivo indebolire i cicloni tropicali inseminando le nuvole al loro interno con ioduro d'argento utilizzando degli aeroplani. Il progetto si svolse negli Stati Uniti d'America fra il 1962 e il 1983. L'assunto del progetto era che lo ioduro d'argento avrebbe causato il congelamento dell'acqua sopraffusa, alterando quindi la struttura interna dell'uragano per cui si procedette con l'inseminazione di alcuni uragani nell'Atlantico. In seguito l'ipotesi si rivelò sbagliata perché la maggior parte degli uragani non contiene sufficiente acqua sopraffusa tale da rendere efficace l'inseminazione delle nuvole. I ricercatori rilevarono che gli uragani che non erano stati seminati con ioduro d'argento spesso andavano incontro alle stesse modifiche dell'occhio del ciclone previste per gli uragani inseminati, questa scoperta portò a dubitare del successo del progetto. L'ultimo volo sperimentale avvenne nel 1971 a causa della mancanza di tempeste adatte e del cambio della flotta del NOAA. Più di dieci anni dopo l'ultimo tentativo di alterazione dei cicloni, il progetto Stormfury fu cancellato ufficialmente. Nonostante il fallimento dell'obiettivo principale di ridurre la distruttività degli uragani, il progetto Stormfury permise di raccogliere dati sul ciclo di vita degli uragani aiutando quindi a migliorare la capacità da parte dei meteorologi di prevedere gli spostamenti e l'intensità dei futuri uragani. (it)
  • O Projeto Stormfury foi uma tentativa de enfraquecer ciclones tropicais através de uma aeronave que voava para o interior destes realizando a semeadura de nuvens com iodeto de prata. O projeto foi conduzido pelo governo dos Estados Unidos da América de 1962 até 1983. (pt)
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  • O Projeto Stormfury foi uma tentativa de enfraquecer ciclones tropicais através de uma aeronave que voava para o interior destes realizando a semeadura de nuvens com iodeto de prata. O projeto foi conduzido pelo governo dos Estados Unidos da América de 1962 até 1983. (pt)
  • El projecte Stormfury va ser un intent de debilitar els ciclons tropicals per mitjà de la sembra de núvols amb iodur d'argent mitjançant el vol d'avions. El projecte va ser dut a terme pel govern dels Estats Units entre el 1962 i el 1983. (ca)
  • Project Stormfury was an attempt to weaken tropical cyclones by flying aircraft into them and seeding with silver iodide. The project was run by the United States Government from 1962 to 1983. The hypothesis was that the silver iodide would cause supercooled water in the storm to freeze, disrupting the inner structure of the hurricane, and this led to seeding several Atlantic hurricanes. However, it was later shown that this hypothesis was incorrect. It was determined that most hurricanes do not contain enough supercooled water for cloud seeding to be effective. Additionally, researchers found that unseeded hurricanes often undergo the same structural changes that were expected from seeded hurricanes. This finding called Stormfury's successes into question, as the changes reported now had (en)
  • Le programme Stormfury (project Stormfury en anglais) était une expérience d’ensemencement des nuages des cyclones tropicaux avec de l’iodure d'argent pour en diminuer l’intensité. Le programme était financé de 1962 à 1983 par le gouvernement des États-Unis et sous la supervision du Weather Bureau et de son successeur le National Weather Service. (fr)
  • Il progetto Stormfury aveva come obiettivo indebolire i cicloni tropicali inseminando le nuvole al loro interno con ioduro d'argento utilizzando degli aeroplani. Il progetto si svolse negli Stati Uniti d'America fra il 1962 e il 1983. (it)
rdfs:label
  • Projecte Stormfury (ca)
  • Stormfury (fr)
  • Progetto Stormfury (it)
  • Project Stormfury (en)
  • Projeto Stormfury (pt)
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