![]() Siingh (2016), Profuse activity of blue electrical discharges at the tops of thunderstorms, Geophys. Two active regions of the cloud tops illuminated by lightning and photographed in observations from the ISS. ![]() It means that thunderstorms affect the lower stratosphere more than we thought." "We found the top of the thundercloud much more electrically active than anticipated," Neubert said. The electrical strikes can affect the concentrations of greenhouse gases, playing a significant role in moving gases between the layers of the atmosphere, Neubert said. The incredible photographs astounded the scientists, they said, revealing thunderstorm-atmosphere interactions that are not well-understood. "The perspective of the ISS means everything, together with a high-resolution, color camera," Neubert told. Their brief duration makes them difficult to detect, according to study co-author Torsten Neubert, also of Denmark's National Space Institute. sSprites form from irregularities in Earth's upper atmosphere. The study also revealed red-colored tendrils created by "sprites" (powerful electric discharges), which last only a few milliseconds. This is the first observation of blue surface-discharges with these characteristics, the scientists reported in the paper. The images also revealed blue, blob-like discharges in the surface layer of the clouds, stretching anywhere from 2.5 to 5.5 square miles (4 to 9 square kilometers) and occurring about 90 times per minute. "They show the astonishing variety of forms that electrical activity can take as we continue to discover new varieties of discharges in and above thunderstorms," the researchers wrote. ![]() His images were the first to capture pulsating discharges at the tops of storm clouds, the scientists said in a paper describing their research, which was published in the journal Geophysical Research Letters. As Mogensen flew over the Bay of Bengal aboard the station, traveling at 17,900 mph (28,800 km/h), he used the ISS's most sensitive camera to record the thunderstorm. ![]()
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