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Home / Articles / Columnists / Earth Talk Q & A /  DEAR EARTH TALK:
. . . . . . .
Wednesday, December 2,2020

DEAR EARTH TALK:

Are there any environmental or health risks associated with the solar storms that have been hitting the Earth recently?

By Earth Talk  
Are there any environmental or health risks associated with the solar storms that have been hitting the Earth recently? – Betsy R., Suwanee, GA

Solar storms have been in the news lately, but the truth is these naturally occurring solar flares and coronal mass ejections (CMEs) from the Sun happen all the time – or at least a few hundred times a year, from what we can tell here on Earth. They are caused by large-scale magnetic eruptions from the Sun that send particles into the atmosphere at high speeds. But luckily for us, the only threats these solar storms pose within the Earth’s atmosphere are to our technology.

According to the National Aeronautics and Space Administration, harmful radiation from these flares can’t pass through Earth’s atmosphere to physically affect humans on the ground; however, when intense enough, they can disturb the atmosphere in the layer where GPS and communications signals travel. Both CMEs and solar flares, if powerful enough, have this disrupting effect.

“When a CME strikes Earth’s atmosphere, it causes a temporary disturbance of the Earth’s magnetic field,” reports Deborah Byrd, editor of the EarthSky.org website. “The charged particles can slam into our atmosphere, disrupt satellites in orbit and even cause them to fail, and bathe high-flying airplanes with radiation.” Besides disrupting navigation and telecommunications systems, solar storms can also cause electricity blackouts down below on Earth. One example happened in Quebec on March 13, 1989. A particularly strong CME caused a power failure that stretched across Quebec and parts of the Northeastern U.S., blacking out the region for nine hours and affecting six million people in the process.

The technological effects of solar storms can be worrisome, but scientists can track and predict these storms in order to mitigate their potential negative impacts on a region. Additionally, one positive result of solar storms in places that lie at higher latitudes is the appearance of the radiant Aurora borealis (also known as the Northern Lights) during these phenomena.

While there have been plenty of solar storms lately, this year actually marks a low point for such activity – a so-called Solar Minimum – in the solar cycle. The Space Weather Prediction Center of the National Oceanic and Atmospheric Administration predicts that the next peak of solar activity will be in July of 2025.

Amateur astronomers interested in tracking solar storms should check out SpaceWeatherLive.com, a nonprofit, all-volunteer project out of Belgium, which coordinates information from several websites on a range of topics including astronomy, space, aurora and related subjects. One of the site’s cool features is a free glimpse into the previous three days of solar storm activity hitting the Earth’s atmosphere.

If you would like to become more involved in the process of tracking solar storms, the Solar Stormwatch II project led by University of Reading in England is looking for volunteers to help record data. Volunteers can aid the project remotely by observing CME data and imagery on the project’s website and recording/ outlining what they see.

CONTACTS: EarthSky, www.earthsky.org; SpaceWeatherLive.com, spaceweatherlive.com; Solar Stormwatch II, zooniverse.org/projects/shannon-/solar-stormwatchii.

EarthTalk® is produced by Roddy Scheer & Doug Moss for the 501(c) (3) nonprofit EarthTalk. See more at https://emagazine.com. To donate, visit https//earthtalk.org. Send questions to: question@earthtalk.org.

 

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