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El “Dragon Lady” de la NASA revela cómo los incendios forestales generan tormentas

La NASA utiliza una versión modificada del avión espía U-2, creado durante la Guerra Fría, para estudiar uno de los fenómenos meteorológicos menos comprendidos de la Tierra: las tormentas generadas por incendios forestales.

El avión, al que la NASA llama ER-2, alberga un laboratorio científico equipado con instrumentos de investigación en lugar de defensas militares y cuenta con un cableado diferente.

La nueva misión de la aeronave es estudiar las tormentas generadas por fenómenos meteorológicos.

Las nubes de fuego, conocidas científicamente como tormentas pirocumulonimbus, son tormentas eléctricas gigantescas producidas por el calor de los incendios forestales. Estas tormentas pueden incluir rayos, fuertes vientos y, en algunos casos, tornados de fuego.

“Es algo así como una chimenea en la que el humo del incendio es impulsado hacia arriba dentro de la tormenta eléctrica, se acelera a través de esa columna vertical y luego es liberado”, dijo David A. Peterson, meteorólogo del Laboratorio de Investigación Naval.

Peterson es el investigador principal de INSPYRE, sigla en inglés del Experimento de Humo Inyectado y Pirocumulonimbus de la NASA, una misión que estudiará el comportamiento errático de estas tormentas.

“La columna de humo generada es básicamente una burbuja cálida que desencadena la tormenta eléctrica, así que es como cualquier otra nube de tormenta eléctrica muy alta y severa, pero ahora la has llenado de humo. En ese momento, el incendio prácticamente se está alimentando a sí mismo”, dijo Peterson.

Los meteorólogos no han podido pronosticar adecuadamente las tormentas pirocumulonimbus porque se forman en condiciones impredecibles. Solo recientemente, los científicos descubrieron que estos sistemas meteorológicos generados por incendios pueden superar una barrera atmosférica natural y llegar a la estratosfera.

“Hay un efecto similar al de un volcán, con humo que es impulsado muy alto en la atmósfera, y hemos aprendido en los últimos años que, una vez que el humo alcanza estas grandes altitudes, obviamente puede ser transportado muy rápido por los vientos de las corrientes en chorro”, dijo Peterson.

La misión despegó en julio y ya ha sobrevolado incendios forestales activos en el norte de Oregon y el oeste de Canadá.

“Con la misión INSPYRE de la NASA, buscamos entender, ante todo, qué condiciones producen estas tormentas”, dijo Peterson.

La NASA, que se encarga tanto de la investigación aeronáutica como de la exploración espacial, utiliza sus aviones ER-2 debido a su capacidad para volar a gran altitud.

“Piensen en él como un satélite dirigible. Vuela por encima del clima, a unos 19.800 metros (65.000 pies), y básicamente podemos hacerlo orbitar de un lado a otro sobre un incendio forestal”, dijo Peterson. “Todos los instrumentos del avión están destinados a medir la energía del incendio en la columna de humo. Hay radares que pueden decirnos qué tan grande es la columna, a qué altitud se encuentra y también cuál es el movimiento del aire dentro de ella. También rastrea los rayos, es decir, el campo eléctrico dentro de estas nubes”.

Mientras el ER-2 sobrevuela la tormenta, la NASA hace volar simultáneamente un avión Gulfstream 5 dentro de las nubes.

“La idea es que los datos que recopilan puedan servir para complementarse entre sí”, dijo Peterson. El G-5 se encuentra directamente dentro de las nubes, por lo que puede proporcionar información a los radares que observan la nube y luego relacionarla con lo que el satélite aéreo está indicando”.

El principal objetivo de esta misión es poder pronosticar algún día estas tormentas.

“Estamos utilizando herramientas que algunos integrantes de nuestro equipo científico están desarrollando ahora para ayudar a orientar la misión, pero también estamos utilizando la misión para retroalimentar y mejorar esas herramientas de predicción”, dijo Peterson. “Inevitablemente habrá un componente de la misión en el que desarrollaremos mejores herramientas para pronosticar este tipo de comportamiento del fuego”.

La historia del ER-2 se remonta a mediados de la década de 1950, antes de los satélites espía, cuando Estados Unidos necesitaba un avión que permitiera saber qué ocurría detrás de la Cortina de Hierro.

“A principios de la década de 1950, los avances militares y económicos soviéticos eran un misterio para Estados Unidos porque la Unión Soviética era una sociedad secreta y cerrada”, según el Museo Nacional de la Fuerza Aérea de Estados Unidos.

El avión espía U-2, apodado “Dragon Lady”, fue diseñado específicamente para volar a altitudes extremadamente elevadas sobre la Unión Soviética.

En ese momento, Estados Unidos creía que ningún misil soviético podía alcanzar la altitud de crucero del avión, lo que le permitía sobrevolar libremente el país.

Pero el 1 de mayo de 1960, apenas cuatro años después del debut del U-2, el ejército soviético derribó uno de los aviones, pilotado por Francis Gary Powers, lo que demostró que Estados Unidos había subestimado las capacidades soviéticas.

Aun así, el U-2 continuó proporcionando información de inteligencia crucial durante el resto de la Guerra Fría, la crisis de los misiles de Cuba y la guerra de Vietnam, así como durante conflictos modernos, incluidos Iraq y Afganistán.

Ahora, más de 70 años después de su primer vuelo, el U-2 “Dragon Lady” sigue volando y el ER-2 de la NASA está en el aire tratando de derrotar a lo que la agencia llama el “dragón que escupe fuego de las nubes”.

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The world’s oldest president left for a ‘brief stay’ in Europe. He hasn’t returned in two months

(CNN) — When Paul Biya won his first presidential election in Cameroon in 1984, Nformi Bime was 23 and still a student.Bime is now 65 and retired from teaching. Biya is 93 – and still president. Last year, he won a disputed eighth term that could keep him in office until he is nearly 100.“The best is yet to come,” Biya said before the election, which his opponents called fraudulent and was marred by deadly clashes between protesters and police.For the past two months, however, the man who has ruled Cameroon since 1982, when as prime minister he assumed power following the resignation of the sitting president, has been thousands of miles away. He left on June 7 for what his office called a “brief private stay in Europe” — now his longest uninterrupted absence from the Central African nation in years.Last week, government spokesman René Emmanuel Sadi told French radio RFI that Biya was in Geneva, Switzerland and was not hospitalized, but did not give more detail on his whereabouts.A president who is rarely seenBiya is Cameroon’s second president since independence in 1960 and one of the world’s longest-serving leaders. He first won office in 1984 under a one-party system, then won six more elections after multiparty politics was introduced.He has spent extended periods abroad during his presidency. But his latest absence has revived questions about his health and who is running the country while he is away.Rumors about Biya’s health and whereabouts have long been part of public life in Cameroon, where he is rarely seen in public. His office has repeatedly had to push back against speculation that he was seriously ill or had died. In 2024, the government banned media discussions about his health, calling them a national security matter.Biya’s long rule also reflects a wider contrast across Africa. The continent has the world’s youngest population, but several countries are still led by aging leaders whose political careers began decades ago, including former liberation figures now governing in a different era.For millions of Cameroonians, Biya is the only president they have ever known.Bime’s children are among them. His oldest is 32, and his youngest is 18.Abit Riassai Acha, a 26-year-old doctoral student and community youth leader at the University of Yaoundé II, belongs to the same generation.“Growing up, President Biya was the only president I knew, so his presidency has been part of my entire experience of Cameroon,” said Acha, who voted for the first time in last year’s presidential election, backing the youthful opposition candidate Samuel Hiram Iyodi, 38.After more than four decades under the same president, questions about his leadership have only grown.“Because this has happened repeatedly over the years, many Cameroonians have become used to it,” Acha said of Biya’s long absences. “But becoming accustomed to something does not necessarily mean that people should stop asking questions about how the country is being governed.”Iyodi, who finished eighth in last year’s presidential election, which several candidates, including one of Biya’s main challengers, were barred from contesting, has called on parliament to ask Cameroon’s Constitutional Council to consider whether Biya’s absence amounts to a vacancy in the presidency. But such a move is unlikely to succeed, given the dominance of Biya’s ruling Cameroon People’s Democratic Movement.Despite being away, Biya has continued to make key decisions from abroad, including a major military reshuffle announced earlier this month. Yet questions about his prolonged stay overseas have left officials publicly assuring Cameroonians that their president is still alive.Government spokesman Sadi dismissed concerns about a power vacuum, telling RFI that “President Paul Biya is alive” and “will soon return.”From hope to frustrationBime is old enough to remember when Biya was the change. He first heard Biya’s name in the 1970s, when he served as secretary-general of the presidency under Cameroon’s first president after independence, Ahmadou Ahidjo. After Ahidjo resigned in 1982, Biya took over.When Biya first appeared on the ballot two years later, Bime saw him as a “representation of hope,” he said. “We believed he was young and dynamic – handsome too. He meant so much to Cameroonians.”Few imagined that the man they saw as a new beginning would remain in power for decades. For his critics, the disappointment is not just about how long Biya has stayed in office, but what they see as his failure to improve the lives of ordinary Cameroonians.Political analyst Collins Molua Ikome, a Cameroonian based in Germany, said he saw some of the country’s problems firsthand when he visited Cameroon in April.“Roads in Cameroon are extremely bad. I even witnessed a fatal accident,” he told CNN.Ikome also pointed to frequent power cuts, corruption and a lack of jobs for young people.Wilson Tamfuh, a public and international law professor at the University of Dschang in West Cameroon, said the country has institutions that can keep the government running when the president delegates responsibilities. Key duties, he said, can be handled by the prime minister, the secretary-general at the presidency and ministers.But the bigger question, Tamfuh said, is whether the government is solving the country’s longstanding problems.“People want the Anglophone crisis resolved, standards of living ameliorated, more good roads, fewer people on the streets with degrees, and more,” he told CNN, referring to the years-long separatist conflict in Cameroon’s English-speaking regions.Whenever Biya eventually leaves office, his successor will inherit a country also facing attacks by Boko Haram militants in the north and deep economic frustration among young people.Healthcare is another concern. Ikome said access to quality healthcare remains out of reach for many Cameroonians.“Life expectancy in the country is below 70 years. However, Biya has far outlived that due to access to medical healthcare abroad, which the ordinary Cameroonian cannot access due to poverty,” Ikome said.The divide is not unique to Cameroon. Across Africa, political elites have often sought healthcare or maintained homes abroad, even as public services at home struggle.For Bime, the question is more personal: Will he live to see another president?After decades of waiting for change, he worries he may not – and that Biya could outlive him and many others who are not part of the country’s elite.“Anytime they have a cold, they run overseas and are taken care of, but the other Cameroonians are dying because of lack of care,” he said.The-CNN-Wire™ & © 2026 Cable News Network, Inc., a Warner Bros. Discovery Company. All rights reserved.
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