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The solar storms of late have made for some compelling nighttime sky-gazing. But these geomagnetic storms can have serious consequences, for example power grid irregularities, degradation of high-frequency communications, GPS outages, and satellite navigation issues. To that lattermost, consider agriculture: a 2023 report by the US Department of Agriculture noted that more than 50 percent of corn, cotton, rice, sorghum, soybeans, and winter wheat are planted and harvested with “automated guidance.” These systems, on which farmers depend, especially in the mid-May planting season, have been compromised…

The powerful geomagnetic storm that cast the northern lights’ vivid colors across the Northern Hemisphere over the weekend also caused some navigational systems in tractors and other farming equipment to break down at the height of planting season, suppliers and farmers said…

Farm equipment suppliers had warned that the storm would result in disruptions. And on Saturday, Landmark Implement, which sells John Deere farming equipment across parts of the Midwest, said that the accuracy of some of its systems had been “extremely compromised” because of the event [as has the equipment of other manufacturers].

The company said in a statement that it was searching for a “tool to help predict this in the future so that we can attempt to give our customers an alert that this issue may be coming.” It described the storm as a “historic event” rather than something it would have to “continue to battle frequently.”

Terry Griffin, an associate professor in agricultural economics at Kansas State University, said that while infrequent, such storms still posed a threat to farming in the United States, where the majority of crops are planted using modern guidance systems.

“This was the first time we’ve had geomagnetic storms that were so strong, and we were reliant upon GPS,” he said, noting that among the worst times for a storm like this to occur was during the planting season, when precision is crucial. Alternative technologies, including systems that use machine vision and artificial intelligence, or a more localized navigation system that would not collapse in a solar storm, are being developed, Dr. Griffin added…

The Northern lights are beautiful, but their cause is playing havoc with agriculture: “Solar Storm Crashes GPS Systems Used by Some Farmers, Stalling Planting” (gift article) from @nytimes.

See also: “Solar Storm Knocks Out Farmers’ Tractor GPS Systems During Peak Planting Season.”

* John Dryden

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As we ruminate on radiation, we might spare a thought for Williamina Fleming; she died on this date in 1911. An astronomer and scholar of stars like our Sun, she was hired by the director of the Harvard College Observatory to help in the photographic classification of stellar spectra. She helped develop a common designation system for stars and cataloged more than ten thousand stars, 59 gaseous nebulae, over 310 variable stars, and 10 novae and other astronomical phenomena. Among several career achievements that advanced astronomy, Fleming is noted for her discovery of the Horsehead Nebula in 1888.

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