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G5 Geomagnetic Storm May Affect Aviation Communication, Navigation

G5 Geomagnetic Storm May Affect Aviation Communication, Navigation

BY EDWARD CARR Published on May 20, 2024 0 COMMENTS
Northern Lights from the cockpit of Lufthansa Boeing 747-8… | Flickr
Photo: https://images.app.goo.gl/7wqTR8fXwE7CFUkg7

 

This month, a severe geomagnetic storm interrupted GPS satellites, power grids, and mobile phone networks. It results from a series of solar flares that began on Wednesday, May 8, and had its maximum effect on May 10-11. This was the first such solar storm to over in nearly 20 years.

 

At least five Coronal Mass Ejections (CMEs) on the sun's surface have sent plasma streams toward Earth. NOAA, the National Oceanic and Atmospheric Administration, issued a severe geomagnetic storm watch beginning Friday at noon and extending through the weekend. The Space Weather Prediction Center has labeled the storm "extreme," the first G5-level storm since 2003.

 

What is a Solar Flare?

 

The particles comprising a solar flare are high-energy hydrogen and helium atoms with all their electrons removed. They contribute radiation that travels with the gases through space. The interplanetary magnetic field, or the Earth's magnetic field, absorbs most of the radiation en route. Only rarely is the radiation from a solar flare measurable on the ground. While measurable radiation is much more common aboard aircraft in flight, it is not in amounts that would harm passengers and crew.

 



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NASA's SDO Shows Images of Significant Solar Flare | Flickr
Photo: https://images.app.goo.gl/73kM4tZRqj4wY6MU7

 

Potential Effects on GPS and Communication
 

Solar flares potentially affect the GPS because they can change the orientation of satellites in Earth's orbit or interfere with their electronic functions. GPS transmissions may be "glitchy" or less accurate if this happens. In essence, any transmissions between space and the surface of the Earth are potentially at risk as they pass through the ionosphere in the upper atmosphere.

 

High Frequency (HF) and satellite transmissions can be affected since HF radio waves might be absorbed by the ionosphere when the energy protons of the solar storm collide with the atmosphere and ionize atoms and molecules to create free electrons, which form a layer at the bottom of the ionosphere. Short Wave radio depends on bouncing radio waves off the underside of the ionosphere. The solar storm's interaction with the ionosphere could also interrupt those signals.

 



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Artist's global concept of the NAVSTAR Global Positioning System Satellite  - NARA & DVIDS Public Domain Archive Public Domain Search
Photo: https://images.app.goo.gl/aPDShZiUir2y3ySH6

 

Effects On Cell Phones and Power Grids
 

Because cell phones rely on lower frequencies, there is little worry that the solar storm will affect cellular communications. NOAA has labeled the chance of such interruptions, including to Wi-Fi, as "slim to none" unless disruption to the power grid exists. In 1989, a solar storm caused a massive blackout of nine hours, affecting the power grid to Quebec, Canada, damaging transformers and other equipment.

 

The enormous geomagnetic storm known to history was the "Carrington Event" of 1859, which caused glowing red skies bright enough to read by and caused telegraph terminals to spark and catch fire.

 



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Geomagnetic Storm In Progress | NASA image captured March 1,… | Flickr
Photo: https://images.app.goo.gl/VhYZ98wyUDwFkvfH7

 

Northern Lights (Aurora Borealis)
 

An aurora happens when the energized particles of the storm interact with Earth's magnetic fields. As the particles of the magnetic storm rain down into our atmosphere, they collide with the oxygen and nitrogen atoms that make up our atmosphere, causing them to glow and emit light, which we see as an aurora. Commonly known as the Northern Lights, the aurora borealis will be visible in much lower latitudes thanks to this weekend's G5 geomagnetic storm.

 



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Time Lapse Photo of Northern Lights · Free Stock Photo
Photo: https://images.app.goo.gl/ecUYxam4rZVUQGm8A

 

CNN has reported the aurora was visible in Michigan and as low as Alabama in the USA on Friday night. The news broadcaster also shared dramatic pictures of colorful skies over London and Scotland and a report featuring photos taken by a passenger aboard a commercial flight in the Detroit, MI, area.

 

The geomagnetic storm is expected to last through the weekend, with effects and corona sightings extending possibly until the following Monday.

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Edward Carr
I am an aviation writer for AeroXplorer.com. I have worked in various aspects of commercial aviation, including simulator visual database design for FlightSafety International; economic research for the Centre for Aviation Safety Research at Parks College of Aviation, Saint Louis University; business planning for Air Choice One regional airlines. It all started with various summer positions for TWA. My novel and associated podcast, Time Of Departure, an aviation-related time-travel story, will be released in June of this year. A professional musician with an MBA from Washington University in St. Louis, I have written everything from music blogs to marketing plans. My favorite flying experience was flying a 1946 Cessna 120 to the EAA fly-in at Oshkosh with my brother when we were both in college. I currently enjoy flying light sport aircraft and living in St. Louis, MO, USA.

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