Over 7000 CG strokes were recorded over ...

Over 7000 CG strokes were recorded over Europe on Thursday 29/6/2017

A lot of electrical activity, mainly over East Europe, on Thursday 29/6/2017. The ZEUS VLF lightning detection system, recorded around 7300 CG strokes. The main activity period was from 09:00 to 15:00 UTC.
Source - News archive

Lightning sparking more boreal forest fi ...

Lightning sparking more boreal forest fires (27/6/2017)

A new NASA-funded study finds that lightning storms were the main driver of recent massive fire years in Alaska and northern Canada, and that these storms are likely to move farther north with climate warming, potentially altering northern landscapes. The study, led by Vrije Universiteit Amsterdam and the University of California, Irvine, examined the cause of the fires, which have been increasing in number in recent years. There was a record number of lightning-ignited fires in the Canadian Northwest Territories in 2014 and in Alaska in 2015. The team found increases of between two and five percent a year in the number of lightning-ignited fires since 1975. To study the fires, the team analyzed data from NASA's Terra and Aqua satellites and from ground-based lightning networks. Lead author Sander Veraverbeke of Vrije Universiteit Amsterdam, who conducted the work while at UC Irvine, said that while the drivers of large fire years in the high north are still poorly understood, the observed trends are consistent with climate change. "We found that it is not just a matter of more burning with higher temperatures. The reality is more complex: higher temperatures also spur more thunderstorms. Lightning from these thunderstorms is what has been igniting many more fires in these recent extreme events," Veraverbeke said. Study co-author Brendan Rogers at Woods Hole Research Center in Falmouth, Massachusetts, said these trends are likely to continue. "We expect an increasing number of thunderstorms, and hence fires, across the high latitudes in the coming decades as a result of climate change." This is confirmed in the study by different climate model outputs. Study co-author Charles Miller of NASA's Jet Propulsion Laboratory in Pasadena, California, said while data from the lightning networks were critical to this study, it is challenging to use these data for trend detection because of continuing network upgrades. "A spaceborne sensor that provides high northern latitude lightning data that can be linked with fire dynamics would be a major step forward," he said. The researchers found that the fires are creeping farther north, near the transition from boreal forests to Arctic tundra. "In these high-latitude ecosystems, permafrost soils store large amounts of carbon that become vulnerable after fires pass through," said co-author James Randerson of the University of California, Irvine. "Exposed mineral soils after tundra fires also provide favorable seedbeds for trees migrating north under a warmer climate." "Taken together, we discovered a complex feedback loop between climate, lightning, fires, carbon and forests that may quickly alter northern landscapes," Veraverbeke concluded. "A better understanding of these relationships is critical to better predict future influences from climate on fires, and from fires on climate."
Source - News archive

Lightning protection tents exist!

The probability of getting struck by lightning is statistically very rare, but alas, storm-attributed deaths and injuries stretch into the low thousands on an annual basis. About 96% of those struck were in open environments when hit. A majority — as you may expect — come from frequent participators in outdoor activities such as hiking, camping, and climbing. Industrial designer kama jania’s ‘bolt’ line of tents was created to increase the safety of those unfortunate to be in the wrong place when the weather turns.
Source - Did you know archive

Lightning Makes For A Terrible Renewable ...

Lightning Makes For A Terrible Renewable Energy Source

Lightning is an impressive, energetic force of nature — so why aren't we using all that raw power to run our homes? Two reasons: For one thing, lightning is unpredictable and really, really fast. The second part of the answer: It's hot and loud and bright, but lightning doesn't carry as much energy as you might think.
Source - Did you know archive

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